UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 

FORM N-CSR 

CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES 

Investment Company Act file number811-09645 

Columbia Funds Series Trust 

(Exact name of registrant as specified in charter) 

225 Franklin Street 

Boston, Massachusetts 02110

(Address of principal executive offices) (Zip code)
 

  

Daniel J. Beckman 

c/o Columbia Management Investment Advisers, LLC 

225 Franklin Street 

Boston, Massachusetts 02110 

  

Ryan C. Larrenaga, Esq. 

c/o Columbia Management Investment Advisers, LLC 

225 Franklin Street 

Boston, MA 02110 


(Name and address of agent for service) 

Registrant's telephone number, including area code:   (800) 345-6611 

Date of fiscal year end:  April 30 

Date of reporting period:  April 30, 2021 

Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. 

A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 100 F Street, NE, Washington, DC 20549. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507. 

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

Item 1. Reports to Stockholders. 


Annual Report
April 30, 2021
Columbia Short Term Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia Short Term Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia Short Term Municipal Bond Fund  |  Annual Report 2021

Table of Contents
Fund at a Glance
Investment objective
The Fund seeks current income exempt from federal income tax, consistent with minimal fluctuation of principal.
Portfolio management
Catherine Stienstra
Co-Portfolio Manager
Managed Fund since 2012
Anders Myhran, CFA
Co-Portfolio Manager
Managed Fund since 2015
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 11/02/93 2.99 1.28 1.06
  Including sales charges   2.00 1.07 0.96
Advisor Class* 03/19/13 3.34 1.57 1.34
Class C Excluding sales charges 05/19/94 2.32 0.54 0.32
  Including sales charges   1.32 0.54 0.32
Institutional Class 10/07/93 3.25 1.53 1.32
Institutional 2 Class* 11/08/12 3.39 1.61 1.38
Institutional 3 Class* 03/01/17 3.44 1.61 1.36
Bloomberg Barclays 1-3 Year Municipal Bond Index   2.33 1.55 1.34
Returns for Class A shares are shown with and without the maximum initial sales charge of 1.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance for more information.
The Bloomberg Barclays 1-3 Year Municipal Bond Index is an unmanaged index which consists of a broad selection of investment-grade general obligation and revenue bonds of maturities ranging from one year to three years.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
3

Table of Contents
Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia Short Term Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Quality breakdown (%) (at April 30, 2021)
AAA rating 4.6
AA rating 27.5
A rating 37.6
BBB rating 14.6
BB rating 0.6
Not rated 15.1
Total 100.0
Percentages indicated are based upon total fixed income investments.
Bond ratings apply to the underlying holdings of the Fund and not the Fund itself and are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. The ratings assigned by credit rating agencies are but one of the considerations that the Investment Manager and/or Fund’s subadviser incorporates into its credit analysis process, along with such other issuer-specific factors as cash flows, capital structure and leverage ratios, ability to de-leverage (repay) through free cash flow, quality of management, market positioning and access to capital, as well as such security-specific factors as the terms of the security (e.g., interest rate and time to maturity) and the amount and type of any collateral.
Top Ten States/Territories (%)
(at April 30, 2021)
New York 19.0
Illinois 9.7
New Jersey 7.7
Pennsylvania 6.2
Massachusetts 4.9
California 4.7
Texas 4.4
Connecticut 4.3
Wisconsin 2.8
Washington 2.5
Percentages indicated are based upon total investments excluding Money Market Funds and investments in derivatives, if any.
For further detail about these holdings, please refer to the section entitled “Portfolio of Investments.”
Fund holdings are as of the date given, are subject to change at any time, and are not recommendations to buy or sell any security.
 
4 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 2.99% excluding sales charges. The Fund’s Institutional shares returned 3.25%. The Fund posted positive absolute returns that outperformed its benchmark, the Bloomberg Barclays 1-3 Year Municipal Bond Index, which returned 2.33% for the same period.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market value versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). Municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
For the annual period as a whole, the short-term municipal bond market underperformed the broader municipal bond market, with the benchmark gaining 2.33% as compared to a 7.75% return for the Bloomberg Barclays Municipal Bond Index.
The Fund’s notable contributors during the period
The Fund’s duration and yield curve positioning contributed positively to its relative results. The Fund had a modestly longer duration profile than that of the benchmark, which helped as municipal yields declined between 50 and 80 basis points during the annual period. (A basis point is 1/100th of a percentage point.) Also, the Fund had an emphasis on securities with greater than three-year maturities, which are not part of the benchmark, but which outperformed the benchmark during the annual period.
Relative to the benchmark, having an underweighted allocation to bonds rated AAA and overweighted allocations to lower rated, i.e. A and BBB, investment-grade bonds boosted the Fund’s results. Lower quality securities overall outperformed higher quality securities during the annual period, as it was generally a “risk on” time in the market.
From a sector perspective, having an underweight to pre-refunded bonds added value to the Fund’s relative results. The pre-refunded sector is generally a higher quality, shorter maturity one, which underperformed lower quality, longer maturity sectors during the annual period.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
5

Table of Contents
Manager Discussion of Fund Performance  (continued)
Having overweight allocations to the transportation and hospital sectors bolstered the Fund’s results, as lower quality sectors outperformed and as the transportation sector came back into favor with the re-opening of the economy following the COVID-19-induced lockdown.
Security selection among transportation, hospital, education and state general obligations bonds contributed to the Fund’s results.
From a states’ perspective, having overweights to Illinois- and New Jersey-based credits, which generally outperformed the benchmark during the annual period, and having an underweight to California-based credits, which generally underperformed the benchmark during the annual period, also contributed positively to the Fund’s results.
The Fund’s notable detractors during the period
Exposure to cash, to municipal bonds with maturities of less than one year and to municipal notes, which are not components of the benchmark and which underperformed the benchmark during the annual period, detracted from the Fund’s relative results. Shorter duration securities underperformed longer duration securities and did not participate to the same extent in the general price appreciation seen elsewhere in the municipal bond market during the annual period.
Having an underweight to state general obligation bonds dampened the Fund’s relative results, as this sector outperformed the benchmark during the annual period.
While the Fund’s overweight allocation to Illinois-based credits helped relative performance, security selection among Illinois-based credits detracted.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state, local or alternative minimum taxes. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to this report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,008.40 1,021.64 3.30 3.33 0.66
Advisor Class 1,000.00 1,000.00 1,010.60 1,022.89 2.06 2.07 0.41
Class C 1,000.00 1,000.00 1,005.60 1,017.90 7.05 7.09 1.41
Institutional Class 1,000.00 1,000.00 1,009.60 1,022.89 2.05 2.07 0.41
Institutional 2 Class 1,000.00 1,000.00 1,009.80 1,023.09 1.85 1.87 0.37
Institutional 3 Class 1,000.00 1,000.00 1,010.00 1,023.34 1.60 1.61 0.32
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Floating Rate Notes 2.2%
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
Minnesota 0.5%
City of Minneapolis/St. Paul Housing & Redevelopment Authority(a),(b)
Revenue Bonds
Allina Health Systems
Series 2009B-1 (JPMorgan Chase Bank)
11/15/2035 0.020%   3,900,000 3,900,000
New York 1.7%
City of New York(a),(b)
Unlimited General Obligation Bonds
Fiscal 2015
Subordinated Series 2015 (JPMorgan Chase Bank)
06/01/2044 0.020%   3,600,000 3,600,000
New York City Transitional Finance Authority(a),(b)
Revenue Bonds
Future Tax Secured
Subordinated Series 2016 (JPMorgan Chase Bank)
02/01/2045 0.020%   1,000,000 1,000,000
New York City Water & Sewer System(a),(b)
Revenue Bonds
2nd General Resolution
Series 2013 (JPMorgan Chase Bank)
06/15/2050 0.020%   5,145,000 5,145,000
06/15/2050 0.020%   2,050,000 2,050,000
Total 11,795,000
Total Floating Rate Notes
(Cost $15,695,000)
15,695,000
Municipal Bonds 88.3%
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Alabama 2.1%
Black Belt Energy Gas District
Revenue Bonds
Series 2017-A (Mandatory Put 07/01/22)
08/01/2047 4.000%   2,500,000 2,598,325
Series 2018A (Mandatory Put 12/01/23)
12/01/2048 4.000%   4,970,000 5,394,239
Black Belt Energy Gas District(c)
Revenue Bonds
Series 2018B-2 (Mandatory Put 12/01/23)
Muni Swap Index Yield + 0.620%
12/01/2048
0.680%   5,000,000 5,024,200
Industrial Development Board of the City of Mobile
Senior Revenue Bonds
Alabama Power Co. - Barry Plant Project
Series 2020 (Mandatory Put 06/26/25)
06/01/2034 1.000%   1,150,000 1,167,434
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Southeast Alabama Gas Supply District (The)
Revenue Bonds
Project #2
Series 2018A
06/01/2021 4.000%   1,000,000 1,002,912
Total 15,187,110
Alaska 0.7%
Alaska Industrial Development & Export Authority
Refunding Revenue Bonds
Greater Fairbanks Community Hospital Foundation Project
Series 2019
04/01/2023 5.000%   1,870,000 2,036,355
04/01/2024 5.000%   1,800,000 2,024,568
Alaska Municipal Bond Bank Authority
Refunding Revenue Bonds
Series 2020-1
12/01/2022 5.000%   700,000 751,422
Total 4,812,345
Arizona 1.7%
Arizona Industrial Development Authority
Revenue Bonds
Lincoln South Beltway Project
Series 2020
02/01/2023 5.000%   1,250,000 1,349,288
05/01/2023 5.000%   1,000,000 1,090,790
Chandler Industrial Development Authority(d)
Revenue Bonds
Intel Corp.
Series 2019 (Mandatory Put 06/03/24)
06/01/2049 5.000%   1,450,000 1,647,795
Coconino County Pollution Control Corp.(d)
Refunding Revenue Bonds
Nevada Power Co.
Series 2020 (Mandatory Put 03/31/23)
09/01/2032 1.875%   1,500,000 1,540,275
Maricopa County Industrial Development Authority(c)
Refunding Revenue Bonds
Banner Health Obligation
Series 2019 (Mandatory Put 10/18/24)
Muni Swap Index Yield + 0.570%
01/01/2035
0.630%   1,420,000 1,413,851
Salt River Project Agricultural Improvement & Power District(e)
Refunding Revenue Bonds
Forward Delivery
Series 2021
01/01/2024 5.000%   4,250,000 4,709,212
Total 11,751,211
The accompanying Notes to Financial Statements are an integral part of this statement.
8 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
California 4.6%
California County Tobacco Securitization Agency
Refunding Revenue Bonds
Series 2020A
06/01/2022 4.000%   300,000 312,306
06/01/2023 4.000%   400,000 430,848
California Health Facilities Financing Authority(e)
Refunding Revenue Bonds
Lucile Salter Packard Children’s Hospital at Stanford
Series 2022
05/15/2026 5.000%   1,000,000 1,155,070
California Housing Finance
Revenue Bonds
Santa Ana Towers
Series 2020F (Mandatory Put 04/01/22)
04/01/2024 1.450%   2,000,000 2,013,920
California Municipal Finance Authority
Refunding Revenue Bonds
Community Medical Centers
Series 2017A
02/01/2036 5.000%   1,745,000 2,089,585
California Public Finance Authority
Refunding Revenue Bonds
Henry Mayo Newhall Hospital
Series 2021
10/15/2024 4.000%   380,000 420,516
10/15/2025 4.000%   400,000 451,652
10/15/2026 4.000%   415,000 476,806
California State Public Works Board(e)
Refunding Revenue Bonds
Various Purpose
Series 2022A
08/01/2025 5.000%   3,000,000 3,421,680
Center Unified School District(f)
Unlimited General Obligation Refunding Bonds
Series 2016 (BAM)
08/01/2031 0.000%   2,000,000 1,582,360
Citrus Community College District(f)
Prerefunded 02/01/24 Unlimited General Obligation Bonds
Election of 2004
Series 2014
08/01/2037 0.000%   2,140,000 2,228,682
Corona-Norco Unified School District(f)
Unlimited General Obligation Bonds
Capital Appreciation
Series 2002D (AGM)
09/01/2027 0.000%   2,000,000 1,861,260
County of Riverside(d)
Revenue Bonds
Series 1989A Escrowed to Maturity (GNMA)
05/01/2021 7.800%   1,500,000 1,500,289
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
County of Sacramento Airport System(d)
Refunding Revenue Bonds
Series 2018C
07/01/2029 5.000%   1,585,000 1,990,728
Port of Oakland(d)
Refunding Revenue Bonds
Intermediate Lien
Junior Subordinated Series 2021
05/01/2026 5.000%   4,125,000 4,957,054
San Francisco City & County Airport Commission - San Francisco International Airport(d)
Refunding Revenue Bonds
Series 2019
01/01/2026 5.000%   1,500,000 1,796,190
Series 2019H Escrowed to Maturity
05/01/2021 5.000%   2,570,000 2,570,314
San Joaquin Hills Transportation Corridor Agency(f)
Revenue Bonds
Senior Lien
Series 1993 Escrowed to Maturity
01/01/2025 0.000%   3,000,000 2,955,360
Total 32,214,620
Colorado 2.1%
City & County of Denver Airport System(d)
Refunding Revenue Bonds
Series 2017A
11/15/2030 5.000%   1,925,000 2,372,909
Series 2020B-1
11/15/2021 5.000%   3,015,000 3,092,184
11/15/2022 5.000%   3,160,000 3,386,604
Colorado Health Facilities Authority
Refunding Revenue Bonds
CommonSpirit Health
Series 2019B (Mandatory Put 08/01/26)
08/01/2049 5.000%   2,000,000 2,397,360
University of Colorado Hospital Authority
Revenue Bonds
Obligation Group
Series 2017 (Mandatory Put 03/01/22)
11/15/2038 5.000%   3,650,000 3,706,246
Total 14,955,303
Connecticut 4.3%
City of Bridgeport
Unlimited General Obligation Refunding Bonds
Series 2017B
08/15/2026 5.000%   3,250,000 3,906,045
City of Waterbury
Unlimited General Obligation Bonds
Series 2017A
11/15/2021 5.000%   500,000 512,715
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
9

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Unlimited General Obligation Refunding Bonds
Series 2017B
09/01/2021 5.000%   425,000 431,622
Connecticut Housing Finance Authority(d)
Refunding Revenue Bonds
Housing Mortgage Finance Program
Series 2021
05/15/2023 0.350%   350,000 350,144
11/15/2023 0.400%   300,000 299,919
Subordinated Series 2018A-2
05/15/2021 2.150%   1,595,000 1,595,992
11/15/2021 2.250%   1,625,000 1,638,666
05/15/2022 2.375%   1,460,000 1,485,039
Revenue Bonds
Subordinated Series 2017C-2
05/15/2021 3.000%   2,680,000 2,682,570
11/15/2021 3.000%   4,435,000 4,438,770
State of Connecticut
Revenue Bonds
Special Tax Obligation Bonds
Series 2020A
05/01/2022 5.000%   400,000 419,336
Unlimited General Obligation Bonds
Green Bonds
Series 2016F
10/15/2030 5.000%   2,410,000 2,925,595
Series 2016E
10/15/2034 5.000%   1,620,000 1,954,854
Series 2020E
09/15/2028 4.000%   3,190,000 3,337,442
State of Connecticut Special Tax
Revenue Bonds
Series 2018B
10/01/2031 5.000%   3,535,000 4,494,045
Total 30,472,754
District of Columbia 1.7%
District of Columbia
Revenue Bonds
Federal Highway Grant Anticipation
Series 2011
12/01/2023 5.250%   1,750,000 1,756,457
District of Columbia Housing Finance Agency
Revenue Bonds
Series 2018B-1 (FHA) (Mandatory Put 03/01/22)
09/01/2023 2.550%   5,175,000 5,271,307
Metropolitan Washington Airports Authority(d)
Refunding Revenue Bonds
Series 2016A
10/01/2035 5.000%   4,000,000 4,737,480
Total 11,765,244
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Florida 1.8%
City of Port St. Lucie
Special Assessment Refunding Revenue Bonds
Series 2016
07/01/2026 2.250%   1,750,000 1,876,735
County of Broward Airport System(d)
Revenue Bonds
Series 2017
10/01/2021 5.000%   1,480,000 1,508,845
County of Lee Solid Waste System(d)
Refunding Revenue Bonds
Series 2016 (NPFGC)
10/01/2022 5.000%   3,100,000 3,277,444
Florida Ports Financing Commission(d)
Prerefunded 06/01/21 Revenue Bonds
Transportation Fund
Series 2011B
06/01/2023 5.000%   3,000,000 3,010,800
Miami-Dade County Housing Finance Authority
Revenue Bonds
Series 2020 (Mandatory Put 04/01/22)
04/01/2023 1.400%   1,000,000 1,004,440
Seminole County Industrial Development Authority
Refunding Revenue Bonds
Legacy Pointe at UCF Project
Series 2019
11/15/2025 3.750%   2,000,000 1,943,100
Total 12,621,364
Georgia 1.0%
Burke County Development Authority
Revenue Bonds
Georgia Power Co. Plant Vogtle Project
Series 2019 (Mandatory Put 05/25/23)
10/01/2032 2.250%   1,000,000 1,037,780
Georgia State Road & Tollway Authority(f),(g)
Prerefunded 06/01/24 Revenue Bonds
I-75 S Express Lanes Project
Series 2014
06/01/2024 0.000%   1,000,000 911,410
Main Street Natural Gas, Inc.
Revenue Bonds
Series 2019B (Mandatory Put 12/02/24)
08/01/2049 4.000%   3,360,000 3,755,640
Series 2019C
09/01/2024 5.000%   1,500,000 1,716,975
Total 7,421,805
 
The accompanying Notes to Financial Statements are an integral part of this statement.
10 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Illinois 9.7%
Chicago Board of Education
Unlimited General Obligation Refunding Bonds
Series 2021B
12/01/2022 5.000%   400,000 426,288
Chicago Midway International Airport(d)
Refunding Revenue Bonds
2nd Lien
Series 2014A
01/01/2022 5.000%   2,000,000 2,062,300
Chicago O’Hare International Airport(d)
Refunding Revenue Bonds
General Senior Lien
Series 2012B Escrowed to Maturity
01/01/2022 5.000%   5,000,000 5,154,750
Series 2013A Escrowed to Maturity
01/01/2022 5.000%   5,675,000 5,850,641
Series 2015A
01/01/2028 5.000%   2,515,000 2,897,959
City of Chicago Wastewater Transmission
Refunding Revenue Bonds
2nd Lien
Series 2008
01/01/2024 5.000%   2,200,000 2,441,230
City of Chicago Waterworks
Refunding Revenue Bonds
2nd Lien
Series 2016
11/01/2021 5.000%   2,115,000 2,162,313
Series 2016
11/01/2022 5.000%   3,220,000 3,437,543
Revenue Bonds
2nd Lien
Series 2012
11/01/2021 4.000%   1,500,000 1,527,765
City of Granite City(d)
Revenue Bonds
Waste Management, Inc. Project
Series 2019 (Mandatory Put 05/03/21)
05/01/2027 2.450%   2,500,000 2,500,000
Cook County Community College District No. 535 Oakton
Prerefunded 12/01/24 Limited General Obligation Bonds
Limited Tax
Series 2014
12/01/2027 4.000%   200,000 225,988
Illinois Development Finance Authority(f)
Revenue Bonds
Regency Park
Series 1991 Escrowed to Maturity
07/15/2025 0.000%   1,510,000 1,471,269
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Zero Regency Park
Series 1991 Escrowed to Maturity
07/15/2023 0.000%   2,395,000 2,377,181
Illinois Finance Authority
Refunding Revenue Bonds
American Water Capital Corp. Project
Series 2020 (Mandatory Put 09/01/23)
05/01/2040 0.700%   2,000,000 1,999,820
Swedish Covenant Hospital
Series 2016 Escrowed to Maturity
08/15/2021 5.000%   455,000 461,133
Revenue Bonds
Loyola University of Chicago
Series 2012B
07/01/2025 5.000%   1,500,000 1,582,065
Illinois Finance Authority(e)
Refunding Revenue Bonds
University of Chicago
Series 2021A
10/01/2025 5.000%   2,000,000 2,369,560
Illinois Housing Development Authority
Revenue Bonds
Senior
Series 2016A
10/01/2031 3.125%   2,895,000 3,028,431
Kane Cook & DuPage Counties School District No. U-46 Elgin(f)
Unrefunded Unlimited General Obligation Bonds
Series 2003B (AMBAC)
01/01/2023 0.000%   2,000,000 1,980,740
Kendall Kane & Will Counties Community Unit School District No. 308(f)
Unlimited General Obligation Bonds
Capital Appreciation-School
Series 2018 (AGM)
02/01/2022 0.000%   1,950,000 1,941,927
Kendall Kane & Will Counties Community Unit School District No. 308
Unlimited General Obligation Refunding Bonds
Series 2011A
02/01/2023 5.500%   2,000,000 2,166,960
Regional Transportation Authority
Revenue Bonds
Series 2018B
06/01/2033 5.000%   1,815,000 2,294,323
State of Illinois
Unlimited General Obligation Bonds
Senior
Series 2014
05/01/2026 5.000%   2,000,000 2,239,800
05/01/2027 5.000%   1,500,000 1,676,190
Series 2020C
05/01/2022 5.125%   500,000 523,330
05/01/2023 5.375%   250,000 273,965
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
11

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Series 2020D
10/01/2022 5.000%   500,000 531,825
10/01/2024 5.000%   2,000,000 2,285,480
Series 2021A
03/01/2024 5.000%   1,250,000 1,401,200
Series 2021B
03/01/2023 5.000%   2,500,000 2,703,625
Unlimited General Obligation Refunding Bonds
Series 2016
02/01/2022 5.000%   1,500,000 1,551,315
Series 2018A
10/01/2021 5.000%   2,000,000 2,037,860
10/01/2023 5.000%   2,300,000 2,542,765
Total 68,127,541
Indiana 2.2%
Elkhart County Corrections Complex Building Corp.
Refunding Revenue Bonds
1st Mortgage
Series 2015
12/01/2025 4.000%   2,505,000 2,863,616
Indiana Finance Authority(c)
Revenue Bonds
Indiana University Health
Series 2011M (Mandatory Put 07/02/21)
Muni Swap Index Yield + 0.280%
12/01/2046
0.340%   5,365,000 5,365,054
Indiana Health & Educational Facilities Financing Authority
Prerefunded 11/02/2021 Revenue Bonds
Ascension Health Alliance
Series 2006B-3
11/15/2031 1.750%   70,000 70,449
Unrefunded Revenue Bonds
Ascension Health Alliance
Series 2006B-3 (Mandatory Put 11/02/21)
11/15/2031 1.750%   4,610,000 4,646,649
Indiana Housing & Community Development Authority(d)
Refunding Revenue Bonds
Series 2020B-2 (GNMA)
01/01/2022 5.000%   1,555,000 1,602,085
Indianapolis Local Public Improvement Bond Bank
Refunding Revenue Bonds
Series 2021A
06/01/2024 5.000%   1,000,000 1,133,570
Total 15,681,423
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Iowa 0.7%
Iowa Student Loan Liquidity Corp.(d)
Refunding Revenue Bonds
Series 2019B
12/01/2022 5.000%   400,000 428,916
12/01/2023 5.000%   1,880,000 2,093,380
Revenue Bonds
Series 2015A
12/01/2022 5.000%   2,000,000 2,142,940
Total 4,665,236
Kentucky 1.6%
County of Owen
Refunding Revenue Bonds
Kentucky-American Water Co. Project
Series 2020 (Mandatory Put 09/01/23)
06/01/2040 0.700%   1,250,000 1,248,738
Kenton County School District Finance Corp.
Refunding Revenue Bonds
Series 2015B
10/01/2025 3.000%   1,995,000 2,157,313
Kentucky Economic Development Finance Authority
Refunding Revenue Bonds
Owensboro Health System
Series 2017A
06/01/2021 5.000%   1,000,000 1,003,011
06/01/2022 5.000%   1,000,000 1,039,900
Kentucky Public Energy Authority
Revenue Bonds
Gas Supply
Series 2018
06/01/2021 4.000%   1,065,000 1,068,112
Kentucky State Property & Building Commission
Refunding Revenue Bonds
Project #112
Series 2016B
11/01/2021 5.000%   3,000,000 3,071,460
Louisville Regional Airport Authority(d)
Refunding Revenue Bonds
Series 2014-A
07/01/2022 5.000%   1,625,000 1,708,362
Total 11,296,896
Louisiana 0.3%
Louisiana Local Government Environmental Facilities & Community Development Authority
Refunding Revenue Bonds
Entergy Louisiana LLC Project
Series 2021
06/01/2030 2.000%   1,250,000 1,274,450
 
The accompanying Notes to Financial Statements are an integral part of this statement.
12 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Louisiana Offshore Terminal Authority
Refunding Revenue Bonds
Loop LLC Project
Series 2019 (Mandatory Put 12/01/23)
09/01/2027 1.650%   1,000,000 1,016,370
Total 2,290,820
Maine 0.2%
Maine Health & Higher Educational Facilities Authority
Revenue Bonds
MaineHealth
Series 2020A
07/01/2026 5.000%   400,000 486,004
07/01/2027 5.000%   600,000 748,314
Total 1,234,318
Maryland 0.3%
Maryland Community Development Administration
Refunding Revenue Bonds
Series 2019B
09/01/2034 3.000%   620,000 666,035
Maryland Health & Higher Educational Facilities Authority
Refunding Revenue Bonds
University of Maryland Medical System
Series 2020 (Mandatory Put 07/01/25)
07/01/2045 5.000%   1,500,000 1,734,285
Total 2,400,320
Massachusetts 2.6%
Boston Housing Authority
Refunding Revenue Bonds
Series 2020A
04/01/2022 0.550%   485,000 485,922
10/01/2022 0.600%   535,000 536,873
04/01/2023 0.650%   590,000 593,699
10/01/2023 0.700%   470,000 473,144
Brockton Area Transit Authority
Revenue Notes
RAN Series 2020
07/30/2021 1.500%   3,050,000 3,056,954
City of Greenfield
General Obligations Notes
BAN Series 2020
10/01/2021 1.500%   4,903,820 4,932,605
Massachusetts Educational Financing Authority(d)
Refunding Revenue Bonds
Issue K
Series 2017A
07/01/2021 4.000%   1,000,000 1,005,930
Series 2018B
07/01/2021 5.000%   1,150,000 1,158,636
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Revenue Bonds
Series 2015A
01/01/2022 5.000%   3,500,000 3,610,705
Senior Revenue Bonds
Series 2019B
07/01/2023 5.000%   500,000 549,485
Massachusetts Housing Finance Agency
Revenue Bonds
Construction Loan Notes
Series 2017B
12/01/2021 2.050%   605,000 605,448
Massachusetts Port Authority(d)
Refunding Revenue Bonds
BosFuel Project
Series 2019A
07/01/2026 5.000%   885,000 1,068,797
Total 18,078,198
Michigan 1.7%
Michigan Finance Authority(e)
Refunding Revenue Bonds
McLaren Health Care
Series 2021D-1
10/15/2026 0.900%   1,615,000 1,614,160
10/15/2027 1.100%   1,650,000 1,654,538
Michigan Finance Authority(d)
Refunding Revenue Bonds
Student Loan
Series 2014-25A
11/01/2023 3.500%   3,165,000 3,293,024
Wayne County Airport Authority(d)
Refunding Revenue Bonds
Junior Lien
Series 2017B
12/01/2021 5.000%   1,000,000 1,026,440
12/01/2022 5.000%   1,100,000 1,179,354
Series 2015F
12/01/2027 5.000%   2,810,000 3,348,003
Total 12,115,519
Minnesota 1.0%
City of Maple Grove
Refunding Revenue Bonds
Maple Grove Hospital Corp.
Series 2017
05/01/2021 4.000%   500,000 500,044
05/01/2022 4.000%   500,000 516,580
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
13

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Wayzata
Refunding Revenue Bonds
Folkstone Senior Living Co.
Series 2019
08/01/2022 3.000%   100,000 100,264
08/01/2023 3.000%   200,000 200,468
08/01/2024 3.000%   100,000 100,366
08/01/2025 3.000%   200,000 200,548
08/01/2026 3.000%   250,000 250,232
Duluth Independent School District No. 709
Refunding Certificate of Participation
School District Credit Enhancement Project
Series 2019B
02/01/2022 5.000%   965,000 995,851
Hastings Independent School District No. 200(f)
Unlimited General Obligation Bonds
Student Credit Enhancement Program School Building
Series 2018A
02/01/2023 0.000%   800,000 796,144
Minnesota Housing Finance Agency(d)
Revenue Bonds
Series 2020A
07/01/2022 1.300%   205,000 206,853
07/01/2023 1.350%   250,000 253,690
Series 2020A (GNMA)
07/01/2021 1.150%   420,000 420,487
07/01/2024 1.450%   160,000 163,242
Series 2020D (GNMA)
07/01/2026 1.650%   460,000 464,246
Series 2020H
01/01/2023 0.550%   200,000 200,580
07/01/2023 0.600%   240,000 240,874
01/01/2024 0.650%   200,000 200,732
07/01/2024 0.700%   200,000 200,568
01/01/2025 0.800%   375,000 375,532
07/01/2025 0.850%   400,000 399,836
Total 6,787,137
Mississippi 0.1%
County of Warren(d)
Refunding Revenue Bonds
International Paper Co. Project
Series 2020 (Mandatory Put 06/16/25)
08/01/2027 1.600%   1,000,000 1,035,620
Missouri 1.1%
Health & Educational Facilities Authority of the State of Missouri
Refunding Revenue Bonds
CoxHealth
Series 2015A
11/15/2033 5.000%   5,000,000 5,744,400
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Joplin Industrial Development Authority
Refunding Revenue Bonds
Freeman Health System
Series 2015
02/15/2035 5.000%   1,820,000 1,990,643
Total 7,735,043
Nebraska 0.5%
Nebraska Investment Finance Authority
Revenue Bonds
Series 2018C
09/01/2023 2.250%   1,920,000 1,994,669
Nebraska Public Power District(e)
Refunding Revenue Bonds
Series 2021A
01/01/2023 5.000%   1,135,000 1,198,571
01/01/2025 5.000%   525,000 596,127
Total 3,789,367
Nevada 1.5%
Clark County School District
Limited General Obligation Bonds
Series 2020A (AGM)
06/15/2026 5.000%   500,000 608,985
County of Clark Department of Aviation(d)
Refunding Revenue Bonds
Airport System Junior Subordinated Lien
Series 2017C
07/01/2021 5.000%   4,625,000 4,660,150
Las Vegas McCarran International Airport
Series 2017
07/01/2022 5.000%   2,240,000 2,362,976
Subordinated Series 2017A-1
07/01/2022 5.000%   3,000,000 3,164,700
Total 10,796,811
New Hampshire 0.9%
New Hampshire Business Finance Authority(c),(d)
Refunding Revenue Bonds
Waste Management, Inc. Project
Series 2018 (Mandatory Put 10/01/21)
Muni Swap Index Yield + 0.750%
10/01/2033
0.810%   5,000,000 5,000,550
New Hampshire Business Finance Authority(d)
Refunding Revenue Bonds
Waste Management, Inc. Project
Series 2019 (Mandatory Put 07/01/24)
07/01/2027 2.150%   1,000,000 1,048,510
Total 6,049,060
 
The accompanying Notes to Financial Statements are an integral part of this statement.
14 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
New Jersey 7.5%
City of Atlantic City
Unlimited General Obligation Bonds
Tax Appeal
Series 2017B (AGM)
03/01/2022 5.000%   500,000 517,945
City of Newark
Unlimited General Obligation Refunding Bonds
School Bond Reserve Fund
Series 2020B
10/01/2021 5.000%   200,000 203,514
10/01/2022 5.000%   400,000 422,896
Garden State Preservation Trust(f)
Revenue Bonds
Capital Appreciation
Series 2003B (AGM)
11/01/2022 0.000%   5,000,000 4,955,650
New Jersey Economic Development Authority(d)
Refunding Revenue Bonds
American Water Co.
Series 2020B (Mandatory Put 06/01/23)
11/01/2034 1.200%   3,000,000 3,038,700
New Jersey-American Water Company, Inc. Project
Series 2020
12/01/2025 0.850%   1,200,000 1,192,704
New Jersey Economic Development Authority
Refunding Revenue Bonds
School Facilities Construction
Series 2013
03/01/2023 5.000%   2,520,000 2,736,342
Series 2015XX
06/15/2026 4.250%   2,355,000 2,689,740
Series 2017B
11/01/2022 5.000%   2,285,000 2,446,138
Revenue Bonds
Self-Designated Social Bonds
Series 2021
06/15/2022 5.000%   200,000 210,536
06/15/2023 5.000%   220,000 241,663
06/15/2024 5.000%   300,000 342,042
New Jersey Health Care Facilities Financing Authority
Refunding Revenue Bonds
Hospital Asset Transformation Program
Series 2017
10/01/2031 5.000%   2,000,000 2,434,300
New Jersey Higher Education Student Assistance Authority
Refunding Revenue Bonds
Series 2019A
12/01/2029 2.375%   815,000 842,849
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
New Jersey Higher Education Student Assistance Authority(d)
Refunding Revenue Bonds
Series 2020A
12/01/2022 5.000%   1,000,000 1,072,780
Revenue Bonds
Senior Series 2016-1A
12/01/2025 5.000%   1,000,000 1,183,540
12/01/2026 5.000%   1,000,000 1,172,770
Series 2015-1A
12/01/2027 4.000%   2,910,000 3,137,824
Series 2017-1A
12/01/2023 5.000%   2,100,000 2,342,949
Series 2020B
12/01/2022 5.000%   1,150,000 1,233,697
New Jersey Housing & Mortgage Finance Agency
Refunding Revenue Bonds
Series 2017B
05/01/2021 2.000%   7,675,000 7,675,338
New Jersey Housing & Mortgage Finance Agency(d)
Refunding Revenue Bonds
Series 2020F (HUD)
04/01/2026 1.500%   3,585,000 3,601,348
New Jersey Transportation Trust Fund Authority
Refunding Revenue Bonds
Federal Highway Reimbursement
Series 2018
06/15/2022 5.000%   3,000,000 3,158,730
New Jersey Transportation Trust Fund Authority(e)
Refunding Revenue Bonds
Series 2022AA
06/15/2027 5.000%   3,185,000 3,723,392
State of New Jersey
Unlimited General Obligation Bonds
COVID-19 Emergency Bonds
Series 2020
06/01/2023 4.000%   1,000,000 1,077,490
Tobacco Settlement Financing Corp.
Refunding Revenue Bonds
Series 2018A
06/01/2022 5.000%   1,000,000 1,050,300
Total 52,705,177
New Mexico 0.5%
City of Farmington(d)
Refunding Revenue Bonds
Public Service Co. of New Mexico San Juan Project
Series 2020 (Mandatory Put 06/01/22)
06/01/2040 1.200%   1,500,000 1,510,260
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
15

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Farmington
Refunding Revenue Bonds
Public Service Co. of New Mexico San Juan Project
Series 2020 (Mandatory Put 06/01/24)
06/01/2040 1.150%   2,000,000 2,030,400
Total 3,540,660
New York 10.7%
Board of Cooperative Educational Services for the Sole Supervisory District
Revenue Notes
RAN Series 2020
06/23/2021 2.000%   5,000,000 5,012,305
Chautauqua County Capital Resource Corp.
Refunding Revenue Bonds
NRG Energy Project
Series 2020 (Mandatory Put 04/03/23)
04/01/2042 1.300%   5,000,000 5,047,750
Cortland Enlarged City School District
Unlimited General Obligation Bonds
RAN Series 2020
07/30/2021 1.500%   4,000,000 4,009,040
Fulton City School District
Unlimited General Obligation Notes
BAN Series 2020
11/05/2021 1.500%   6,000,001 6,035,400
Holland Central School District
Unlimited General Obligation Notes
BAN Series 2020
06/24/2021 1.750%   5,535,000 5,547,127
Housing Development Corp.
Revenue Bonds
Series 2017C-2
07/01/2021 1.700%   1,285,000 1,286,658
Sustainable Neighborhood
Series 2017G (Mandatory Put 12/31/21)
11/01/2057 2.000%   2,625,000 2,626,575
Hudson Yards Infrastructure Corp.
Refunding Revenue Bonds
Series 2020A
02/15/2026 5.000%   1,890,000 2,280,342
Huntington Local Development Corp.
Revenue Bonds
Fountaingate Garden Project
Series 2021
07/01/2025 3.000%   1,725,000 1,745,182
Series 2021B
07/01/2027 4.000%   1,000,000 1,019,100
Metropolitan Transportation Authority
Revenue Bonds
BAN Series 2019B-1
05/15/2022 5.000%   2,000,000 2,096,860
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
BAN Series 2020A-S2
02/01/2022 4.000%   2,000,000 2,054,140
BAN Subordinated Series 2020B-2B
05/15/2021 5.000%   4,000,000 4,006,787
Series 2020A-1
02/01/2023 5.000%   5,000,000 5,400,950
New York City Housing Development Corp.
Revenue Bonds
Sustainability Bonds
Series 2020 (FHA) (Mandatory Put 05/01/25)
11/01/2060 0.700%   4,680,000 4,695,584
New York City Transitional Finance Authority
Revenue Bonds
Building Aid
Subordinated Series 2015S
07/15/2027 5.000%   2,090,000 2,442,855
New York Transportation Development Corp.(d)
Refunding Revenue Bonds
Terminal 4 John F. Kennedy International Airport Project
Series 2020
12/01/2023 5.000%   2,250,000 2,508,457
New York Transportation Development Corp.
Refunding Revenue Bonds
Terminal 4 John F. Kennedy International Airport Project
Series 2020
12/01/2024 5.000%   1,000,000 1,157,690
Port Authority of New York & New Jersey(d)
Prerefunded 10/15/21 Revenue Bonds
Series 2011-106
10/15/2021 5.000%   2,250,000 2,297,925
Revenue Bonds
Series 2013-178
12/01/2025 5.000%   1,975,000 2,203,488
Port Authority of New York & New Jersey(d),(e)
Refunding Revenue Bonds
Series 2021-226
10/15/2026 5.000%   2,670,000 3,228,671
10/15/2027 5.000%   1,625,000 2,008,614
10/15/2028 5.000%   1,750,000 2,202,357
State of New York Mortgage Agency(d)
Refunding Revenue Bonds
Series 2017-206
10/01/2021 1.800%   1,165,000 1,171,687
04/01/2022 1.950%   1,300,000 1,317,186
Social Bonds
Series 2021-232
10/01/2023 5.000%   460,000 510,890
04/01/2024 5.000%   355,000 401,491
10/01/2024 5.000%   370,000 425,385
 
The accompanying Notes to Financial Statements are an integral part of this statement.
16 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Revenue Bonds
55th Series 2017
10/01/2021 2.050%   505,000 508,414
Total 75,248,910
North Carolina 0.8%
North Carolina Turnpike Authority
Refunding Revenue Bonds
Senior Lien
Series 2017
01/01/2025 5.000%   1,500,000 1,743,765
Series 2018
01/01/2025 5.000%   1,110,000 1,290,386
Revenue Bonds
BAN Series 2020
02/01/2024 5.000%   1,500,000 1,689,360
North Carolina Turnpike Authority(f)
Refunding Revenue Bonds
Series 2016C
07/01/2026 0.000%   780,000 715,744
Total 5,439,255
Ohio 1.3%
City of Cleveland Airport System(d)
Refunding Revenue Bonds
Series 2019B
01/01/2024 5.000%   1,200,000 1,339,668
Hillsdale Local School District
Certificate of Participation
Ohio School Facilities Project
Series 2020 (BAM)
12/01/2021 4.000%   500,000 510,705
12/01/2022 4.000%   600,000 635,046
12/01/2023 4.000%   670,000 728,223
Ohio Air Quality Development Authority(d)
Refunding Revenue Bonds
American Electric Power Co. Project
Series 2019 (Mandatory Put 10/01/24)
07/01/2028 2.100%   6,000,000 6,275,040
Total 9,488,682
Oklahoma 0.6%
Oklahoma Development Finance Authority(d)
Revenue Bonds
Gilcrease Expressway West Project
Series 2020
07/06/2023 1.625%   4,000,000 4,020,280
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Oregon 0.6%
County of Gilliam(d)
Revenue Bonds
Waste Management, Inc. Project
Series 2019A (Mandatory Put 05/02/22)
08/01/2025 2.400%   1,000,000 1,001,610
Medford Hospital Facilities Authority
Refunding Revenue Bonds
Asante Project
Series 2020A
08/15/2025 5.000%   465,000 552,555
08/15/2026 5.000%   300,000 367,125
Oregon State Business Development Commission(d)
Revenue Bonds
Intel Corp. Project
Series 250 (Mandatory Put 03/01/22)
03/01/2049 5.000%   2,500,000 2,594,600
Total 4,515,890
Pennsylvania 6.3%
City of Philadelphia Airport(d)
Refunding Revenue Bonds
Series 2011A
06/15/2023 5.000%   1,540,000 1,553,829
Series 2017B
07/01/2022 5.000%   500,000 527,570
Series 2020C
07/01/2025 5.000%   2,450,000 2,882,107
Pennsylvania Economic Development Financing Authority
Refunding Revenue Bonds
Philadelphia Biosolids Facility Project
Series 2020
01/01/2022 3.000%   725,000 734,287
Senior Revenue Bonds
UPMC
Series 2015B
03/15/2026 5.000%   1,845,000 2,198,244
Pennsylvania Economic Development Financing Authority(d)
Revenue Bonds
PA Bridges Finco
Series 2015
12/31/2029 5.000%   5,000,000 5,930,750
12/31/2030 5.000%   2,460,000 2,906,515
PA Bridges Finco LP
Series 2015
12/31/2021 5.000%   1,170,000 1,205,416
06/30/2022 5.000%   5,000,000 5,264,850
Pennsylvania Housing Finance Agency(d)
Refunding Revenue Bonds
Series 2017-124A
10/01/2021 1.750%   725,000 728,719
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Social Bonds
Series 2021-134B
04/01/2022 5.000%   1,235,000 1,288,303
04/01/2023 5.000%   1,000,000 1,087,890
04/01/2025 5.000%   435,000 507,880
10/01/2025 5.000%   300,000 355,215
Pennsylvania Housing Finance Agency
Revenue Bonds
Series 2019-129
10/01/2034 2.950%   1,500,000 1,593,285
Series 2020-132A
04/01/2026 1.450%   1,400,000 1,435,980
10/01/2026 1.500%   1,500,000 1,541,400
Pennsylvania Turnpike Commission(c)
Refunding Revenue Bonds
Series 2018A-1
Muni Swap Index Yield + 0.600%
12/01/2023
0.660%   5,000,000 5,035,000
Pennsylvania Turnpike Commission
Refunding Revenue Bonds
Subordinated Series 2017B-2
06/01/2031 5.000%   1,000,000 1,225,250
Subordinated Series 2017B-2 (AGM)
06/01/2035 5.000%   2,275,000 2,771,109
Quakertown General Authority
Refunding Revenue Bonds
USDA Loan Anticipation Notes
Series 2017
07/01/2021 3.125%   2,500,000 2,496,900
School District of Philadelphia (The)
Limited General Obligation Bonds
Series 2018A
09/01/2022 5.000%   560,000 595,162
09/01/2023 5.000%   450,000 495,603
Total 44,361,264
Puerto Rico 0.8%
Puerto Rico Housing Finance Authority(h)
Refunding Revenue Bonds
Public Housing Project
Series 2020
12/01/2022 5.000%   2,500,000 2,681,950
12/01/2023 5.000%   2,500,000 2,792,650
Total 5,474,600
Rhode Island 1.3%
Rhode Island Commerce Corp.
Revenue Bonds
Department of Transportation
Series 2020A
05/15/2025 5.000%   1,000,000 1,180,390
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Rhode Island Housing & Mortgage Finance Corp.(d)
Refunding Revenue Bonds
Homeownership Opportunity
Series 2016
04/01/2026 2.600%   1,235,000 1,310,471
10/01/2026 2.650%   1,575,000 1,670,335
Rhode Island Student Loan Authority(d)
Refunding Revenue Bonds
Series 2018A
12/01/2022 5.000%   1,300,000 1,392,274
12/01/2023 5.000%   750,000 833,490
Revenue Bonds
Senior Program
Series 2019A
12/01/2023 5.000%   650,000 722,358
12/01/2024 5.000%   875,000 1,002,916
12/01/2035 2.875%   1,190,000 1,184,788
Total 9,297,022
South Carolina 0.5%
Laurens County Water & Sewer Commission
Revenue Bonds
BAN Series 2020
02/01/2022 1.375%   2,000,000 2,003,380
South Carolina State Housing Finance & Development Authority
Revenue Bonds
Series 2020A
01/01/2024 1.500%   1,090,000 1,116,084
07/01/2024 1.550%   575,000 591,353
Total 3,710,817
Tennessee 0.4%
Memphis-Shelby County Airport Authority(d)
Refunding Revenue Bonds
Series 2020B
07/01/2024 5.000%   2,235,000 2,550,582
Texas 4.4%
Atascosa County Industrial Development Corp.
Refunding Revenue Bonds
San Miguel Electric Cooperative, Inc. Project
Series 2020
12/15/2024 5.000%   550,000 621,912
12/15/2026 5.000%   625,000 734,219
Central Texas Regional Mobility Authority
Revenue Bonds
Subordinated BAN Series 2020F
01/01/2025 5.000%   1,500,000 1,709,685
Subordinated Series 2021C
01/01/2027 5.000%   2,000,000 2,374,640
 
The accompanying Notes to Financial Statements are an integral part of this statement.
18 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Houston
Limited General Obligation Refunding Bonds
Series 2017A
03/01/2030 5.000%   1,820,000 2,242,659
City of Houston Airport System(d)
Refunding Revenue Bonds
Subordinated Series 2018C
07/01/2027 5.000%   1,890,000 2,354,619
City of San Antonio Airport System(d)
Refunding Revenue Bonds
Lien
Subordinated Series 2019A
07/01/2024 5.000%   1,000,000 1,137,820
Denton Independent School District
Unlimited General Obligation Bonds
Series 2020
08/15/2025 5.000%   1,575,000 1,878,928
DeSoto Independent School District(f)
Unlimited General Obligation Refunding Bonds
Series 2020
08/15/2026 0.000%   2,510,000 2,415,373
Harris County Cultural Education Facilities Finance Corp.
Revenue Bonds
National Western Life Group
Series 2019A (Mandatory Put 12/01/26)
07/01/2049 5.000%   2,500,000 3,071,700
Harris County Cultural Education Facilities Finance Corp.(c)
Revenue Bonds
Natus Medical, Inc.
Series 2019 (Mandatory Put 12/04/24)
Muni Swap Index Yield + 0.570%
12/01/2049
0.630%   2,000,000 1,991,240
Lewisville Independent School District(f)
Unlimited General Obligation Refunding Bonds
Series 2014B
08/15/2022 0.000%   3,175,000 3,162,808
New Hope Cultural Education Facilities Finance Corp.
Revenue Bonds
Texas A&M University Cain Hall Redevelopment Project
Series 2016
04/01/2036 5.000%   1,545,000 1,835,027
North Texas Tollway Authority(f)
Refunding Revenue Bonds
Capital Appreciation
Series 2008 (AGM)
01/01/2028 0.000%   2,185,000 2,020,076
State of Texas
Unlimited General Obligation Bonds
College Student Loans
Series 2020A
08/01/2026 4.500%   1,000,000 1,195,010
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Texas Municipal Gas Acquisition & Supply Corp. III
Refunding Revenue Bonds
Senior
Series 2021
12/15/2022 5.000%   1,750,000 1,880,760
12/15/2028 5.000%   500,000 633,145
Total 31,259,621
Utah 1.2%
County of Utah
Revenue Bonds
IHC Health Services, Inc.
Series 2018B (Mandatory Put 08/01/22)
05/15/2056 5.000%   3,750,000 3,924,000
Series 2020B (Mandatory Put 08/01/24)
05/15/2060 5.000%   1,500,000 1,722,585
Salt Lake City Corp. Airport(d)
Revenue Bonds
Series 2017A
07/01/2032 5.000%   2,105,000 2,550,165
Total 8,196,750
Virginia 1.5%
Amelia County Industrial Development Authority(d)
Refunding Revenue Bonds
Waste Management, Inc. Project
Series 2021
04/01/2027 1.450%   1,750,000 1,762,880
Arlington County Industrial Development Authority
Refunding Revenue Bonds
Virginia Hospital Center
Series 2020
07/01/2023 5.000%   740,000 815,103
Halifax County Industrial Development Authority
Revenue Bonds
Virginia Electric and Power Co. Project
Series 2008B (Mandatory Put 04/01/22)
12/01/2041 0.450%   4,000,000 4,005,040
Virginia Commonwealth Transportation Board
Revenue Bonds
Series 2014
05/15/2025 5.000%   1,500,000 1,713,330
Virginia Port Authority Commonwealth Port Fund(d)
Refunding Revenue Bonds
Series 2020B
07/01/2029 5.000%   850,000 1,095,709
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
19

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Virginia Small Business Financing Authority
Refunding Revenue Bonds
National Senior Campuses
Series 2020
01/01/2022 5.000%   400,000 412,028
01/01/2023 5.000%   425,000 456,144
01/01/2024 5.000%   500,000 556,790
Total 10,817,024
Washington 2.6%
Chelan County Public Utility District No. 1(d)
Refunding Revenue Bonds
Series 2020C
07/01/2023 5.000%   990,000 1,087,981
07/01/2024 5.000%   2,155,000 2,452,713
07/01/2025 5.000%   1,170,000 1,370,573
Port of Seattle(d)
Revenue Bonds
Intermediate Lien
Series 2019
04/01/2022 5.000%   2,000,000 2,084,440
04/01/2023 5.000%   2,000,000 2,168,700
Series 2018B
05/01/2023 5.000%   2,000,000 2,178,960
Seattle Housing Authority
Revenue Bonds
Hinoki Apartments Project
Series 2020A
06/01/2023 3.000%   3,000,000 3,155,670
Washington Health Care Facilities Authority
Revenue Bonds
Providence Health & Services
Series 2012A
10/01/2026 5.000%   1,000,000 1,065,480
Washington State Housing Finance Commission(d)
Refunding Revenue Bonds
Single Family Program
Series 2015
12/01/2022 2.600%   1,030,000 1,060,416
Washington State Housing Finance Commission
Revenue Bonds
Transforming Age Projects
Series 2019
01/01/2026 2.375%   1,500,000 1,498,980
Total 18,123,913
Wisconsin 2.8%
City of Milwaukee
Unlimited General Obligation Bonds
Promissory Notes
Series 2015N-2
03/15/2024 4.000%   2,545,000 2,798,864
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Unlimited General Obligation Refunding Bonds
Corporate Purpose Bonds
Series 2018
04/01/2029 5.000%   1,745,000 2,153,487
Wisconsin Health & Educational Facilities Authority
Refunding Revenue Bonds
Marshfield Clinic Health System, Inc.
Series 2020 (Mandatory Put 02/15/25)
02/15/2052 5.000%   3,500,000 3,974,460
Series 2019B-5 (Mandatory Put 12/03/24)
11/15/2033 5.000%   7,165,000 8,254,940
Wisconsin Housing & Economic Development Authority(d)
Refunding Revenue Bonds
Series 2017B (FHA)
09/01/2022 2.150%   870,000 887,043
Revenue Bonds
Series 2018A
03/01/2022 2.500%   1,265,000 1,283,266
09/01/2022 2.600%   710,000 726,600
Total 20,078,660
Wyoming 0.1%
Wyoming Community Development Authority(d)
Refunding Revenue Bonds
Series 2020-3
06/01/2023 5.000%   955,000 1,040,205
Total Municipal Bonds
(Cost $613,267,780)
623,154,377
Municipal Short Term 10.8%
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
California 0.2%
California Municipal Finance Authority(g)
Revenue Notes
State Deferral Financing Program
RAN Series 2021
12/15/2021 1.130%   1,700,000 1,700,238
Connecticut 0.1%
State of Connecticut
Special Tax Bonds
Series 2020A
05/01/2021 0.330%   500,000 500,051
Illinois 0.1%
Chicago Board of Education
Unlimited General Obligation Bonds
Series 2021
12/01/2021 0.470%   400,000 410,580
 
The accompanying Notes to Financial Statements are an integral part of this statement.
20 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Short Term (continued)
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
State of Illinois
Unlimited General Obligation Bonds
Series 2020
05/01/2021 0.850%   500,000 500,056
Total 910,636
Massachusetts 2.4%
Cape Cod Regional Transit Authority
Revenue Notes
Series 2020
07/23/2021 0.590%   4,500,000 4,509,360
MetroWest Regional Transit Authority
Revenue Notes
RAN Series 2020
09/17/2021 0.380%   5,000,000 5,021,150
Southeastern Massachusetts Regional 911 District
Limited General Obligation Notes
BAN Series 2020
10/14/2021 0.420%   7,133,389 7,168,343
Total 16,698,853
Nevada 0.6%
State of Nevada Department of Business & Industry(d),(g)
Revenue Bonds
Brightline West Passenger Rail Project
Series 2020 (Mandatory Put 07/01/21)
01/01/2050 0.500%   4,000,000 4,000,680
New Jersey 0.3%
City of Newark
Unlimited General Obligation Notes
BAN Series 2020C
10/05/2021 0.310%   1,000,000 1,007,250
Series 2020
07/27/2021 0.400%   1,000,000 1,007,450
Total 2,014,700
New York 6.9%
Board of Cooperative Educational Services for the Sole Supervisory District
Revenue Notes
RAN Series 2020
07/30/2021 0.540%   5,000,000 5,011,900
09/29/2021 0.510%   5,000,000 5,020,400
Brocton Central School District
Unlimited General Obligation Notes
BAN Series 2020A
06/29/2021 0.390%   5,750,000 5,760,406
City of Amsterdam
Limited General Obligation Notes
Series 2020
06/24/2021 1.270%   7,689,034 7,697,215
Municipal Short Term (continued)
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
Fort Plain Central School District
Unlimited General Obligation Notes
Series 2020
06/30/2021 0.590%   4,500,000 4,506,795
Greater Southern Tier Board of Cooperative Educational Services District
Revenue Notes
RAN Series 2020
06/30/2021 0.560%   5,000,000 5,007,800
Onondaga Central School District
Unlimited General Obligation Notes
BAN Series 2021
07/30/2021 0.320%   4,000,000 4,006,840
Sandy Creek Central School District
Unlimited General Obligation Notes
Series 2020
06/25/2021 0.410%   5,520,000 5,529,172
Town of Windham
Limited General Obligation Notes
Series 2020
05/19/2021 0.980%   6,521,000 6,524,433
Total 49,064,961
Tennessee 0.2%
Memphis-Shelby County Airport Authority(d)
Refunding Revenue Bonds
Series 2020B
07/01/2021 0.580%   1,125,000 1,133,392
Total Municipal Short Term
(Cost $75,998,435)
76,023,511
    
Money Market Funds 1.7%
  Shares Value ($)
Dreyfus AMT-Free Tax Exempt Cash Management Fund, Institutional Shares, 0.010%(i) 88,010 88,001
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(i) 11,944,207 11,944,207
Total Money Market Funds
(Cost $12,032,209)
12,032,208
Total Investments in Securities
(Cost $716,993,424)
726,905,096
Other Assets & Liabilities, Net   (21,266,567)
Net Assets $705,638,529
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
21

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
At April 30, 2021, securities and/or cash totaling $193,750 were pledged as collateral.
Investments in derivatives
Short futures contracts
Description Number of
contracts
Expiration
date
Trading
currency
Notional
amount
Value/Unrealized
appreciation ($)
Value/Unrealized
depreciation ($)
U.S. Treasury 2-Year Note (140) 06/2021 USD (30,906,094) (1,858)
U.S. Treasury 5-Year Note (80) 06/2021 USD (9,915,000) (17,936)
Total         (19,794)
Notes to Portfolio of Investments
(a) The Fund is entitled to receive principal and interest from the guarantor after a day or a week’s notice or upon maturity. The maturity date disclosed represents the final maturity.
(b) Represents a variable rate security where the coupon rate adjusts on specified dates (generally daily or weekly) using the prevailing money market rate. The interest rate shown was the current rate as of April 30, 2021.
(c) Variable rate security. The interest rate shown was the current rate as of April 30, 2021.
(d) Income from this security may be subject to alternative minimum tax.
(e) Represents a security purchased on a when-issued basis.
(f) Zero coupon bond.
(g) Represents privately placed and other securities and instruments exempt from Securities and Exchange Commission registration (collectively, private placements), such as Section 4(a)(2) and Rule 144A eligible securities, which are often sold only to qualified institutional buyers. At April 30, 2021, the total value of these securities amounted to $6,612,328, which represents 0.94% of total net assets.
(h) Municipal obligations include debt obligations issued by or on behalf of territories, possessions, or sovereign nations within the territorial boundaries of the United States. At April 30, 2021, the total value of these securities amounted to $5,474,600, which represents 0.78% of total net assets.
(i) The rate shown is the seven-day current annualized yield at April 30, 2021.
Abbreviation Legend
AGM Assured Guaranty Municipal Corporation
AMBAC Ambac Assurance Corporation
BAM Build America Mutual Assurance Co.
BAN Bond Anticipation Note
FHA Federal Housing Authority
GNMA Government National Mortgage Association
HUD Department of Housing and Urban Development
NPFGC National Public Finance Guarantee Corporation
RAN Revenue Anticipation Note
Currency Legend
USD US Dollar
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
The accompanying Notes to Financial Statements are an integral part of this statement.
22 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Fair value measurements  (continued)
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Floating Rate Notes 15,695,000 15,695,000
Municipal Bonds 623,154,377 623,154,377
Municipal Short Term 76,023,511 76,023,511
Money Market Funds 12,032,208 12,032,208
Total Investments in Securities 12,032,208 714,872,888 726,905,096
Investments in Derivatives        
Liability        
Futures Contracts (19,794) (19,794)
Total 12,012,414 714,872,888 726,885,302
See the Portfolio of Investments for all investment classifications not indicated in the table.
The Fund’s assets assigned to the Level 2 input category are generally valued using the market approach, in which a security’s value is determined through reference to prices and information from market transactions for similar or identical assets.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $716,993,424) $726,905,096
Cash 17,624
Margin deposits on:  
Futures contracts 193,750
Receivable for:  
Capital shares sold 772,966
Interest 7,267,869
Expense reimbursement due from Investment Manager 2,783
Prepaid expenses 15,709
Total assets 735,175,797
Liabilities  
Payable for:  
Investments purchased on a delayed delivery basis 27,808,018
Capital shares purchased 820,174
Distributions to shareholders 657,235
Variation margin for futures contracts 3,125
Management services fees 8,288
Distribution and/or service fees 546
Transfer agent fees 18,125
Compensation of board members 196,859
Other expenses 24,898
Total liabilities 29,537,268
Net assets applicable to outstanding capital stock $705,638,529
Represented by  
Paid in capital 701,015,588
Total distributable earnings (loss) 4,622,941
Total - representing net assets applicable to outstanding capital stock $705,638,529
Class A  
Net assets $72,326,982
Shares outstanding 6,911,594
Net asset value per share $10.46
Maximum sales charge 1.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $10.57
Advisor Class  
Net assets $1,899,097
Shares outstanding 181,265
Net asset value per share $10.48
Class C  
Net assets $1,774,879
Shares outstanding 169,742
Net asset value per share $10.46
Institutional Class  
Net assets $94,743,259
Shares outstanding 9,054,067
Net asset value per share $10.46
Institutional 2 Class  
Net assets $86,120,272
Shares outstanding 8,233,569
Net asset value per share $10.46
Institutional 3 Class  
Net assets $448,774,040
Shares outstanding 42,901,871
Net asset value per share $10.46
The accompanying Notes to Financial Statements are an integral part of this statement.
24 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $23,666
Interest 12,238,928
Total income 12,262,594
Expenses:  
Management services fees 3,108,739
Distribution and/or service fees  
Class A 167,289
Class C 24,290
Transfer agent fees  
Class A 60,491
Advisor Class 1,493
Class C 2,202
Institutional Class 87,724
Institutional 2 Class 45,392
Institutional 3 Class 33,175
Compensation of board members 92,853
Custodian fees 7,664
Printing and postage fees 22,088
Registration fees 111,481
Audit fees 39,500
Legal fees 14,432
Compensation of chief compliance officer 140
Other 25,676
Total expenses 3,844,629
Fees waived or expenses reimbursed by Investment Manager and its affiliates (1,092,263)
Fees waived by transfer agent  
Institutional 2 Class (5,263)
Institutional 3 Class (33,170)
Expense reduction (20)
Total net expenses 2,713,913
Net investment income 9,548,681
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 1,586,026
Futures contracts (63,699)
Net realized gain 1,522,327
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers 13,228,648
Futures contracts (19,794)
Net change in unrealized appreciation (depreciation) 13,208,854
Net realized and unrealized gain 14,731,181
Net increase in net assets resulting from operations $24,279,862
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $9,548,681 $14,501,305
Net realized gain (loss) 1,522,327 (1,298,712)
Net change in unrealized appreciation (depreciation) 13,208,854 (4,774,105)
Net increase in net assets resulting from operations 24,279,862 8,428,488
Distributions to shareholders    
Net investment income and net realized gains    
Class A (678,849) (1,041,153)
Advisor Class (20,767) (58,538)
Class C (7,089) (34,487)
Institutional Class (1,228,303) (1,829,256)
Institutional 2 Class (1,047,089) (502,315)
Institutional 3 Class (6,511,584) (11,276,477)
Total distributions to shareholders (9,493,681) (14,742,226)
Decrease in net assets from capital stock activity (45,626,148) (135,972,060)
Total decrease in net assets (30,839,967) (142,285,798)
Net assets at beginning of year 736,478,496 878,764,294
Net assets at end of year $705,638,529 $736,478,496
The accompanying Notes to Financial Statements are an integral part of this statement.
26 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 2,612,673 27,249,549 2,227,206 23,116,765
Distributions reinvested 55,153 575,463 84,604 880,458
Redemptions (1,799,873) (18,778,018) (2,872,681) (29,722,450)
Net increase (decrease) 867,953 9,046,994 (560,871) (5,725,227)
Advisor Class        
Subscriptions 119,565 1,246,949 240,454 2,503,382
Distributions reinvested 1,089 11,383 1,549 16,145
Redemptions (104,979) (1,089,868) (272,017) (2,782,359)
Net increase (decrease) 15,675 168,464 (30,014) (262,832)
Class C        
Subscriptions 36,887 385,098 87,760 902,703
Distributions reinvested 610 6,352 2,621 27,260
Redemptions (205,718) (2,144,595) (363,677) (3,778,224)
Net decrease (168,221) (1,753,145) (273,296) (2,848,261)
Institutional Class        
Subscriptions 6,410,387 66,896,172 5,057,825 52,680,566
Distributions reinvested 100,600 1,049,830 149,034 1,551,336
Redemptions (5,926,639) (61,906,942) (6,814,884) (70,140,596)
Net increase (decrease) 584,348 6,039,060 (1,608,025) (15,908,694)
Institutional 2 Class        
Subscriptions 2,177,094 22,699,582 5,574,378 57,391,600
Distributions reinvested 82,771 863,378 28,124 292,438
Redemptions (988,288) (10,315,639) (1,281,861) (13,315,497)
Net increase 1,271,577 13,247,321 4,320,641 44,368,541
Institutional 3 Class        
Subscriptions 2,192,795 22,911,309 2,422,041 25,185,200
Distributions reinvested 5,633 58,755 6,035 62,744
Redemptions (9,146,804) (95,344,906) (17,384,087) (180,843,531)
Net decrease (6,948,376) (72,374,842) (14,956,011) (155,595,587)
Total net decrease (4,377,044) (45,626,148) (13,107,576) (135,972,060)
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Short Term Municipal Bond Fund  | Annual Report 2021
27

Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.26 0.11 0.20 0.31 (0.11) (0.11)
Year Ended 4/30/2020 $10.35 0.15 (0.08) 0.07 (0.16) (0.16)
Year Ended 4/30/2019 $10.26 0.15 0.09 0.24 (0.15) (0.15)
Year Ended 4/30/2018 $10.36 0.11 (0.09) 0.02 (0.12) (0.12)
Year Ended 4/30/2017 $10.43 0.09 (0.06) 0.03 (0.10) (0.10)
Advisor Class
Year Ended 4/30/2021 $10.27 0.13 0.21 0.34 (0.13) (0.13)
Year Ended 4/30/2020 $10.36 0.18 (0.09) 0.09 (0.18) (0.18)
Year Ended 4/30/2019 $10.27 0.18 0.09 0.27 (0.18) (0.18)
Year Ended 4/30/2018 $10.36 0.14 (0.09) 0.05 (0.14) (0.14)
Year Ended 4/30/2017 $10.43 0.12 (0.07) 0.05 (0.12) (0.12)
Class C
Year Ended 4/30/2021 $10.25 0.03 0.21 0.24 (0.03) (0.03)
Year Ended 4/30/2020 $10.34 0.08 (0.09) (0.01) (0.08) (0.08)
Year Ended 4/30/2019 $10.25 0.07 0.10 0.17 (0.08) (0.08)
Year Ended 4/30/2018 $10.35 0.03 (0.09) (0.06) (0.04) (0.04)
Year Ended 4/30/2017 $10.42 0.01 (0.06) (0.05) (0.02) (0.02)
Institutional Class
Year Ended 4/30/2021 $10.26 0.13 0.20 0.33 (0.13) (0.13)
Year Ended 4/30/2020 $10.35 0.18 (0.09) 0.09 (0.18) (0.18)
Year Ended 4/30/2019 $10.26 0.18 0.09 0.27 (0.18) (0.18)
Year Ended 4/30/2018 $10.36 0.13 (0.09) 0.04 (0.14) (0.14)
Year Ended 4/30/2017 $10.43 0.12 (0.07) 0.05 (0.12) (0.12)
Institutional 2 Class
Year Ended 4/30/2021 $10.25 0.14 0.21 0.35 (0.14) (0.14)
Year Ended 4/30/2020 $10.35 0.18 (0.09) 0.09 (0.19) (0.19)
Year Ended 4/30/2019 $10.26 0.18 0.09 0.27 (0.18) (0.18)
Year Ended 4/30/2018 $10.35 0.15 (0.09) 0.06 (0.15) (0.15)
Year Ended 4/30/2017 $10.42 0.13 (0.07) 0.06 (0.13) (0.13)
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.46 2.99% 0.81% 0.66%(c) 1.02% 46% $72,327
Year Ended 4/30/2020 $10.26 0.63% 0.80%(d) 0.66%(c),(d) 1.48% 58% $61,987
Year Ended 4/30/2019 $10.35 2.39% 0.81% 0.66%(c) 1.44% 55% $68,355
Year Ended 4/30/2018 $10.26 0.16% 0.81% 0.67%(c) 1.08% 36% $83,580
Year Ended 4/30/2017 $10.36 0.26% 0.86% 0.71%(c) 0.86% 46% $106,751
Advisor Class
Year Ended 4/30/2021 $10.48 3.34% 0.56% 0.41%(c) 1.26% 46% $1,899
Year Ended 4/30/2020 $10.27 0.89% 0.55%(d) 0.41%(c),(d) 1.72% 58% $1,701
Year Ended 4/30/2019 $10.36 2.64% 0.56% 0.41%(c) 1.74% 55% $2,027
Year Ended 4/30/2018 $10.27 0.51% 0.56% 0.42%(c) 1.33% 36% $607
Year Ended 4/30/2017 $10.36 0.51% 0.62% 0.45%(c) 1.15% 46% $1,041
Class C
Year Ended 4/30/2021 $10.46 2.32% 1.56% 1.41%(c) 0.30% 46% $1,775
Year Ended 4/30/2020 $10.25 (0.12%) 1.55%(d) 1.41%(c),(d) 0.74% 58% $3,464
Year Ended 4/30/2019 $10.34 1.62% 1.55% 1.41%(c) 0.69% 55% $6,322
Year Ended 4/30/2018 $10.25 (0.59%) 1.56% 1.42%(c) 0.33% 36% $10,327
Year Ended 4/30/2017 $10.35 (0.48%) 1.61% 1.46%(c) 0.11% 46% $14,630
Institutional Class
Year Ended 4/30/2021 $10.46 3.25% 0.56% 0.41%(c) 1.27% 46% $94,743
Year Ended 4/30/2020 $10.26 0.89% 0.55%(d) 0.41%(c),(d) 1.72% 58% $86,870
Year Ended 4/30/2019 $10.35 2.64% 0.56% 0.41%(c) 1.70% 55% $104,300
Year Ended 4/30/2018 $10.26 0.40% 0.58% 0.44%(c) 1.21% 36% $112,699
Year Ended 4/30/2017 $10.36 0.51% 0.61% 0.46%(c) 1.11% 46% $1,366,779
Institutional 2 Class
Year Ended 4/30/2021 $10.46 3.39% 0.53% 0.37% 1.31% 46% $86,120
Year Ended 4/30/2020 $10.25 0.83% 0.51%(d) 0.37%(d) 1.77% 58% $71,372
Year Ended 4/30/2019 $10.35 2.69% 0.51% 0.36% 1.76% 55% $27,329
Year Ended 4/30/2018 $10.26 0.55% 0.51% 0.37% 1.41% 36% $18,813
Year Ended 4/30/2017 $10.35 0.61% 0.50% 0.36% 1.21% 46% $14,452
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Total
distributions to
shareholders
Institutional 3 Class
Year Ended 4/30/2021 $10.25 0.14 0.21 0.35 (0.14) (0.14)
Year Ended 4/30/2020 $10.35 0.19 (0.10) 0.09 (0.19) (0.19)
Year Ended 4/30/2019 $10.25 0.18 0.11 0.29 (0.19) (0.19)
Year Ended 4/30/2018 $10.36 0.15 (0.11) 0.04 (0.15) (0.15)
Year Ended 4/30/2017(e) $10.35 0.02 0.01(f) 0.03 (0.02) (0.02)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) The benefits derived from expense reductions had an impact of less than 0.01%.
(d) Ratios include interfund lending expense which is less than 0.01%.
(e) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(f) Calculation of the net gain (loss) per share (both realized and unrealized) does not correlate to the aggregate realized and unrealized gain (loss) presented in the Statement of Operations due to the timing of subscriptions and redemptions of Fund shares in relation to fluctuations in the market value of the portfolio.
(g) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Institutional 3 Class
Year Ended 4/30/2021 $10.46 3.44% 0.48% 0.32% 1.37% 46% $448,774
Year Ended 4/30/2020 $10.25 0.88% 0.46%(d) 0.32%(d) 1.82% 58% $511,085
Year Ended 4/30/2019 $10.35 2.84% 0.46% 0.32% 1.78% 55% $670,432
Year Ended 4/30/2018 $10.25 0.41% 0.46% 0.33% 1.50% 36% $911,594
Year Ended 4/30/2017(e) $10.36 0.33% 0.50%(g) 0.31%(g) 1.42%(g) 46% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia Short Term Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class, Institutional 2 Class and Institutional 3 Class shares are available for purchase through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Debt securities generally are valued by pricing services approved by the Board of Trustees based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques that take into account, as applicable, factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as approved independent broker-dealer quotes. Debt securities for which quotations are not readily available or not believed to be reflective of market value may also be valued based upon a bid quote from an approved independent broker-dealer. Debt securities maturing in 60 days or less are valued primarily at amortized market value, unless this method results in a valuation that management believes does not approximate fair value.
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Futures and options on futures contracts are valued based upon the settlement price at the close of regular trading on their principal exchanges or, in the absence of a settlement price, at the mean of the latest quoted bid and ask prices.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
32 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Derivative instruments
The Fund invests in certain derivative instruments, as detailed below, in seeking to meet its investment objectives. Derivatives are instruments whose values depend on, or are derived from, in whole or in part, the value of one or more securities, currencies, commodities, indices, or other assets or instruments. Derivatives may be used to increase investment flexibility (including to maintain cash reserves while maintaining desired exposure to certain assets), for risk management (hedging) purposes, to facilitate trading, to reduce transaction costs and to pursue higher investment returns. The Fund may also use derivative instruments to mitigate certain investment risks, such as foreign currency exchange rate risk, interest rate risk and credit risk. Derivatives may involve various risks, including the potential inability of the counterparty to fulfill its obligations under the terms of the contract, the potential for an illiquid secondary market (making it difficult for the Fund to sell or terminate, including at favorable prices) and the potential for market movements which may expose the Fund to gains or losses in excess of the amount shown in the Statement of Assets and Liabilities. The notional amounts of derivative instruments, if applicable, are not recorded in the financial statements.
A derivative instrument may suffer a marked-to-market loss if the value of the contract decreases due to an unfavorable change in the market rates or values of the underlying instrument. Losses can also occur if the counterparty does not perform its obligations under the contract. The Fund’s risk of loss from counterparty credit risk on over-the-counter derivatives is generally limited to the aggregate unrealized gain netted against any collateral held by the Fund and the amount of any variation margin held by the counterparty, plus any replacement costs or related amounts. With exchange-traded or centrally cleared derivatives, there is reduced counterparty credit risk to the Fund since the clearinghouse or central counterparty (CCP) provides some protection in the case of clearing member default. The clearinghouse or CCP stands between the buyer and the seller of the contract; therefore, additional counterparty credit risk is failure of the clearinghouse or CCP. However, credit risk still exists in exchange-traded or centrally cleared derivatives with respect to initial and variation margin that is held in a broker’s customer account. While clearing brokers are required to segregate customer margin from their own assets, in the event that a clearing broker becomes insolvent or goes into bankruptcy and at that time there is a shortfall in the aggregate amount of margin held by the clearing broker for all its clients, U.S. bankruptcy laws will typically allocate that shortfall on a pro-rata basis across all the clearing broker’s customers (including the Fund), potentially resulting in losses to the Fund.
In order to better define its contractual rights and to secure rights that will help the Fund mitigate its counterparty risk, the Fund may enter into an International Swaps and Derivatives Association, Inc. Master Agreement (ISDA Master Agreement) or similar agreement with its derivatives counterparties. An ISDA Master Agreement is an agreement between the Fund and a counterparty that governs over-the-counter derivatives and foreign exchange forward contracts and contains, among other things, collateral posting terms and netting provisions in the event of a default and/or termination event. Under an ISDA Master Agreement, the Fund may, under certain circumstances, offset with the counterparty certain derivative instrument’s payables and/or receivables with collateral held and/or posted and create one single net payment. The provisions of the ISDA Master Agreement typically permit a single net payment in the event of default (close-out netting), including the bankruptcy or insolvency of the counterparty. Note, however, that bankruptcy or insolvency laws of a particular jurisdiction may impose restrictions on or prohibitions against the right of offset or netting in bankruptcy, insolvency or other events.
Collateral (margin) requirements differ by type of derivative. Margin requirements are established by the clearinghouse or CCP for exchange-traded and centrally cleared derivatives. Brokers can ask for margin in excess of the minimum in certain circumstances. Collateral terms for most over-the-counter derivatives are subject to regulatory requirements to exchange variation margin with trading counterparties and may have contract specific margin terms as well. For over-the-counter derivatives traded under an ISDA Master Agreement, the collateral requirements are typically calculated by netting the marked-to-market amount for each transaction under such agreement and comparing that amount to the value of any variation margin currently pledged by the Fund and/or the counterparty. Generally, the amount of collateral due from or to a
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Notes to Financial Statements  (continued)
April 30, 2021
party has to exceed a minimum transfer amount threshold (e.g., $250,000) before a transfer has to be made. To the extent amounts due to the Fund from its counterparties are not fully collateralized, contractually or otherwise, the Fund bears the risk of loss from counterparty nonperformance. The Fund may also pay interest expense on cash collateral received from the broker. Any interest expense paid by the Fund is shown on the Statement of Operations. The Fund attempts to mitigate counterparty risk by only entering into agreements with counterparties that it believes have the financial resources to honor their obligations and by monitoring the financial stability of those counterparties.
Certain ISDA Master Agreements allow counterparties of over-the-counter derivatives transactions to terminate derivatives contracts prior to maturity in the event the Fund’s net asset value declines by a stated percentage over a specified time period or if the Fund fails to meet certain terms of the ISDA Master Agreement, which would cause the Fund to accelerate payment of any net liability owed to the counterparty. The Fund also has termination rights if the counterparty fails to meet certain terms of the ISDA Master Agreement. In determining whether to exercise such termination rights, the Fund would consider, in addition to counterparty credit risk, whether termination would result in a net liability owed from the counterparty.
For financial reporting purposes, the Fund does not offset derivative assets and derivative liabilities that are subject to netting arrangements in the Statement of Assets and Liabilities.
Futures contracts
Futures contracts are exchange-traded and represent commitments for the future purchase or sale of an asset at a specified price on a specified date. The Fund bought and sold futures contracts to manage exposure to movements in interest rates. These instruments may be used for other purposes in future periods. Upon entering into futures contracts, the Fund bears risks that it may not achieve the anticipated benefits of the futures contracts and may realize a loss. Additional risks include counterparty credit risk, the possibility of an illiquid market, and that a change in the value of the contract or option may not correlate with changes in the value of the underlying asset.
Upon entering into a futures contract, the Fund deposits cash or securities with the broker, known as a futures commission merchant (FCM), in an amount sufficient to meet the initial margin requirement. The initial margin deposit must be maintained at an established level over the life of the contract. Cash deposited as initial margin is recorded in the Statement of Assets and Liabilities as margin deposits. Securities deposited as initial margin are designated in the Portfolio of Investments. Subsequent payments (variation margin) are made or received by the Fund each day. The variation margin payments are equal to the daily change in the contract value and are recorded as variation margin receivable or payable and are offset in unrealized gains or losses. The Fund generally expects to earn interest income on its margin deposits. The Fund recognizes a realized gain or loss when the contract is closed or expires. Futures contracts involve, to varying degrees, risk of loss in excess of the variation margin disclosed in the Statement of Assets and Liabilities.
Effects of derivative transactions in the financial statements
The following tables are intended to provide additional information about the effect of derivatives on the financial statements of the Fund, including: the fair value of derivatives by risk category and the location of those fair values in the Statement of Assets and Liabilities; and the impact of derivative transactions over the period in the Statement of Operations, including realized and unrealized gains (losses). The derivative instrument schedules following the Portfolio of Investments present additional information regarding derivative instruments outstanding at the end of the period, if any.
The following table is a summary of the fair value of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) at April 30, 2021:
  Liability derivatives  
Risk exposure
category
Statement
of assets and liabilities
location
Fair value ($)
Interest rate risk Component of total distributable earnings (loss) — unrealized depreciation on futures contracts 19,794*
    
* Includes cumulative appreciation (depreciation) as reported in the tables following the Portfolio of Investments. Only the current day’s variation margin is reported in receivables or payables in the Statement of Assets and Liabilities.
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Notes to Financial Statements  (continued)
April 30, 2021
The following table indicates the effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) in the Statement of Operations for the year ended April 30, 2021:
Amount of realized gain (loss) on derivatives recognized in income
Risk exposure category Futures
contracts
($)
Interest rate risk (63,699)
 
Change in unrealized appreciation (depreciation) on derivatives recognized in income
Risk exposure category Futures
contracts
($)
Interest rate risk (19,794)
The following table is a summary of the average outstanding volume by derivative instrument for the year ended April 30, 2021:
Derivative instrument Average notional
amounts ($)*
Futures contracts — short 3,251,719
    
* Based on the ending daily outstanding amounts for the year ended April 30, 2021.
Delayed delivery securities
The Fund may trade securities on other than normal settlement terms, including securities purchased or sold on a “when-issued” or "forward commitment" basis. This may increase risk to the Fund since the other party to the transaction may fail to deliver, which could cause the Fund to subsequently invest at less advantageous prices. The Fund designates cash or liquid securities in an amount equal to the delayed delivery commitment.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.43% to 0.28% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.43% of the Fund’s average daily net assets.
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transactions with affiliates
For the year ended April 30, 2021, the Fund engaged in purchase and/or sale transactions with affiliates and/or accounts that have a common investment manager (or affiliated investment managers), common directors/trustees, and/or common officers. Those purchase and sale transactions complied with provisions of Rule 17a-7 under the 1940 Act and were $907,560 and $0, respectively.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 2 Class and Institutional 3 Class shares are subject to an annual limitation of not more than 0.07% and 0.02%, respectively, of the average daily net assets attributable to each share class. In addition, effective through August 31, 2021, Institutional 2 Class shares are subject to a contractual transfer agency fee annual limitation of not more than 0.05% and Institutional 3 Class shares are subject to a contractual transfer agency fee annual limitation of not more than 0.00% of the average daily net assets attributable to each share class.
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.09
Advisor Class 0.09
Class C 0.09
Institutional Class 0.09
Institutional 2 Class 0.05
Institutional 3 Class 0.00
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, these minimum account balance fees reduced total expenses of the Fund by $20.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 1.00 0.50(a) 79,192
Class C 1.00(b) 550
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  September 1, 2020
through
August 31, 2021
Prior to
September 1, 2020
Class A 0.66% 0.67%
Advisor Class 0.41 0.42
Class C 1.41 1.42
Institutional Class 0.41 0.42
Institutional 2 Class 0.37 0.37
Institutional 3 Class 0.32 0.32
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. Reflected in the contractual cap commitment, effective through August 31, 2021, is the Transfer Agent’s contractual agreement to limit total transfer agency fees to an annual rate of not more than 0.05% for Institutional 2 Class and 0.00% for Institutional 3 Class of the average daily net assets attributable to each share class, unless sooner terminated at the sole discretion of the Board of Trustees. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, tax straddles, distributions, capital loss carryforward and re-characterization of distributions for investments. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Undistributed net
investment
income ($)
Accumulated
net realized
(loss) ($)
Paid in
capital ($)
(6) 6
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
5,908 9,487,773 9,493,681 9,270 14,732,956 14,742,226
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
1,013,682 (5,339,328) 9,801,700
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
717,083,602 10,457,536 (655,836) 9,801,700
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
The following capital loss carryforwards, determined at April 30, 2021, may be available to reduce future net realized gains on investments, if any, to the extent permitted by the Internal Revenue Code. In addition, for the year ended April 30, 2021, capital loss carryforwards utilized, if any, were as follows:
No expiration
short-term ($)
No expiration
long-term ($)
Total ($) Utilized ($)
(1,570,781) (3,768,547) (5,339,328) 1,609,928
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $326,492,770 and $289,551,376, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Securities issued by a particular state and its instrumentalities are subject to the risk of unfavorable developments in such state. A municipal security can be significantly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes in a particular state’s (state and its instrumentalities’) financial, economic or other condition and prospects.
Shareholder concentration risk
At April 30, 2021, one unaffiliated shareholder of record owned 65.6% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued and noted no items requiring adjustment of the financial statements or additional disclosure.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to
42 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
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Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia Short Term Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia Short Term Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the custodian and brokers; when replies were not received from brokers and/or agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
44 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

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 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Exempt-
interest
dividends
 
99.94%  
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
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TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
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TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
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 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
52 Columbia Short Term Municipal Bond Fund  | Annual Report 2021

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Columbia Short Term Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/
ANN223_04_L01_(06/21)

Annual Report
April 30, 2021
Columbia California Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia California Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia California Intermediate Municipal Bond Fund  |  Annual Report 2021

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Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and California individual income tax, consistent with moderate fluctuation of principal.
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2012
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 09/09/02 6.80 2.42 3.63
  Including sales charges   3.56 1.80 3.31
Advisor Class* 03/19/13 7.08 2.68 3.89
Class C Excluding sales charges 09/11/02 6.11 1.66 2.86
  Including sales charges   5.11 1.66 2.86
Institutional Class 08/19/02 7.18 2.68 3.89
Institutional 2 Class* 11/08/12 7.26 2.75 3.95
Institutional 3 Class* 03/01/17 7.19 2.77 3.93
Bloomberg Barclays California 3-15 Year Blend Municipal Bond Index   5.98 2.97 4.05
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance for more information.
The Bloomberg Barclays California 3-15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of investment-grade bonds issued from the state of California and its municipalities.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
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Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia California Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Quality breakdown (%) (at April 30, 2021)
AAA rating 2.4
AA rating 53.2
A rating 29.6
BBB rating 11.8
BB rating 1.8
Not rated 1.2
Total 100.0
Percentages indicated are based upon total fixed income investments.
Bond ratings apply to the underlying holdings of the Fund and not the Fund itself and are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. The ratings assigned by credit rating agencies are but one of the considerations that the Investment Manager and/or Fund’s subadviser incorporates into its credit analysis process, along with such other issuer-specific factors as cash flows, capital structure and leverage ratios, ability to de-leverage (repay) through free cash flow, quality of management, market positioning and access to capital, as well as such security-specific factors as the terms of the security (e.g., interest rate and time to maturity) and the amount and type of any collateral.
4 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

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Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 6.80% excluding sales charges. The Fund’s Institutional Class shares returned 7.18%. During the same time period, the Fund’s benchmark, the Bloomberg Barclays California 3-15 Year Blend Municipal Bond Index, returned 5.98% and the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). National municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating the continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
California recently provided an updated financial projection that showed the state emerging from the pandemic with a much stronger fiscal position than initially feared when the state economy grinded to a halt a year ago. The much-strengthened budgetary performance was driven by tax revenue collection outperforming the forecast. All three of the major tax revenues (personal income, sales and corporate tax) reported significantly better-than-budget performance since August 2020. Positive equity market performance, lower than forecasted unemployment and surprisingly strong consumption all contributed to revenue outperformance within the state.
The Fund’s most notable contributors during the period
The Fund’s overweighting to lower investment-grade municipal bonds (bonds rated A and BBB) was the biggest driver of returns as lower rated bonds outperformed higher quality bonds during the period.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
5

Table of Contents
Manager Discussion of Fund Performance  (continued)
Within this broader lower investment-grade quality segment, the hospital, education and transportation sectors were positive contributors to performance as they outperformed. All three sectors represented the largest overweights in the portfolio.
Duration positioning was also a positive contributor during the period as the Fund maintained an above-benchmark duration for much of the period. This was particularly helpful during the first three months of the period as the market rallied strongly.
Yield curve positioning was a modest positive contributor. The Fund was overweight in bonds with maturities of eight years and longer. Longer maturity bonds outperformed their shorter maturity counterparts during the annual period.
The Fund’s most notable detractors during the period
While little of the portfolio’s positioning detracted from performance, the lowest returning areas during the period were municipal bonds that were rated AAA, pre-refunded or with maturities within two years.
The Fund was underweight in both AAA rated bonds and pre-refunded bonds, but did have an overweight to bonds maturing within two years.
There was overlap between these two areas as the Fund’s pre-refunded holdings were rated AAA and had an average maturity of 1.3 years.
These holdings were of the highest quality, had low yields and contributed very little to total return.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to this report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

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Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,018.80 1,021.19 3.77 3.78 0.75
Advisor Class 1,000.00 1,000.00 1,020.10 1,022.44 2.52 2.52 0.50
Class C 1,000.00 1,000.00 1,015.00 1,017.45 7.54 7.54 1.50
Institutional Class 1,000.00 1,000.00 1,020.10 1,022.44 2.52 2.52 0.50
Institutional 2 Class 1,000.00 1,000.00 1,020.40 1,022.74 2.22 2.22 0.44
Institutional 3 Class 1,000.00 1,000.00 1,020.60 1,022.99 1.96 1.97 0.39
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Floating Rate Notes 0.1%
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
Variable Rate Demand Notes 0.1%
State of California(a),(b)
Unlimited General Obligation Bonds
Kindergarten
Series 2013A2 (State Street)
05/01/2034 0.010%   535,000 535,000
Total Floating Rate Notes
(Cost $535,000)
535,000
Municipal Bonds 99.9%
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Airport 10.6%
City of Los Angeles Department of Airports
Refunding Revenue Bonds
Subordinated Series 2015C
05/15/2029 5.000%   2,410,000 2,834,184
Subordinated Series 2019C
05/15/2035 5.000%   3,975,000 5,083,349
05/15/2037 5.000%   2,250,000 2,860,762
Revenue Bonds
Subordinated Series 2017B
05/15/2029 5.000%   330,000 410,223
05/15/2030 5.000%   500,000 618,045
City of Los Angeles Department of Airports(c)
Revenue Bonds
Los Angeles International Airport
Subordinated Series 2019
05/15/2038 5.000%   3,500,000 4,358,200
Senior Series 2020C
05/15/2038 5.000%   3,000,000 3,840,510
County of Orange Airport
Refunding Revenue Bonds
Series 2019A
07/01/2029 5.000%   200,000 246,986
Series 2019B
07/01/2029 5.000%   275,000 339,606
County of Sacramento Airport System
Refunding Revenue Bonds
Subordinated Series 2016B
07/01/2036 5.000%   1,750,000 2,093,752
Subordinated Series 2018E
07/01/2034 5.000%   1,000,000 1,244,800
Norman Y. Mineta San Jose International Airport
Refunding Revenue Bonds
Series 2014B
03/01/2027 5.000%   2,000,000 2,256,060
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Series 2014C
03/01/2030 5.000%   2,500,000 2,796,075
San Diego County Regional Airport Authority
Refunding Revenue Bonds
Subordinated Series 2017A
07/01/2033 5.000%   1,000,000 1,220,110
07/01/2034 5.000%   700,000 852,586
San Diego County Regional Airport Authority(c)
Refunding Revenue Bonds
Subordinated Series 2019B
07/01/2036 5.000%   1,540,000 1,915,637
Subordinated Series 2020
07/01/2036 5.000%   495,000 629,378
07/01/2039 5.000%   400,000 504,316
San Francisco City & County Airport Commission - San Francisco International Airport
Refunding Revenue Bonds
2nd Series 2016A
05/01/2026 5.000%   1,975,000 2,414,497
San Francisco Airport Commission Project
Series 2019
05/01/2036 5.000%   3,205,000 4,072,337
San Francisco City & County Airport Commission - San Francisco International Airport(c)
Refunding Revenue Bonds
Series 2019H
05/01/2026 5.000%   1,140,000 1,381,133
Series 2020A-2
05/01/2039 4.000%   750,000 880,868
Revenue Bonds
Series 2019E
05/01/2037 5.000%   4,000,000 4,978,760
Total 47,832,174
Charter Schools 3.9%
California Infrastructure & Economic Development Bank
Revenue Bonds
Equitable School Revolving Fund
Series 2019
11/01/2039 5.000%   275,000 338,489
California School Finance Authority(d)
Refunding Revenue Bonds
Aspire Public Schools
Series 2016
08/01/2029 5.000%   1,100,000 1,266,430
08/01/2030 5.000%   1,505,000 1,722,954
08/01/2031 5.000%   925,000 1,055,971
Revenue Bonds
Alliance College-Ready Public Schools
Series 2015
07/01/2030 5.000%   3,400,000 3,889,770
The accompanying Notes to Financial Statements are an integral part of this statement.
8 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Green Dot Public School Project
Series 2015A
08/01/2035 5.000%   1,010,000 1,141,098
Series 2018
08/01/2038 5.000%   1,000,000 1,195,670
KIPP Los Angeles Projects
Series 2015A
07/01/2035 5.000%   1,250,000 1,418,500
Series 2017
07/01/2037 5.000%   3,090,000 3,662,515
River Springs Charter School Project
Series 2015
07/01/2025 5.250%   1,360,000 1,454,248
California School Finance Authority
Revenue Bonds
KIPP Los Angeles Projects
Series 2014A
07/01/2034 5.000%   600,000 663,462
Total 17,809,107
Disposal 0.2%
California Municipal Finance Authority(d)
Revenue Bonds
Waste Management, Inc.
Series 2009A (Mandatory Put 02/03/25)
02/01/2039 1.300%   750,000 771,675
Health Services 0.1%
California Municipal Finance Authority
Revenue Bonds
Clincas Del Camino Real, Inc.
Series 2020
03/01/2035 4.000%   500,000 583,965
Higher Education 6.3%
California Educational Facilities Authority
Refunding Revenue Bonds
Loma Linda University
Series 2017A
04/01/2034 5.000%   1,485,000 1,777,203
04/01/2035 5.000%   2,000,000 2,388,840
Series 2018-A
12/01/2036 5.000%   1,000,000 1,233,370
Revenue Bonds
Chapman University
Series 2015
04/01/2026 5.000%   1,000,000 1,175,080
Green Bonds - Loyola Marymount University
Series 2018
10/01/2036 5.000%   760,000 944,885
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
California Municipal Finance Authority
Refunding Revenue Bonds
Azusa Pacific University
Series 2015B
04/01/2025 5.000%   395,000 459,369
04/01/2026 5.000%   1,000,000 1,158,350
Biola University
Series 2017
10/01/2031 5.000%   540,000 653,351
10/01/2032 5.000%   615,000 742,465
10/01/2033 5.000%   625,000 751,662
10/01/2034 5.000%   570,000 684,086
California Lutheran University
Series 2018
10/01/2035 5.000%   225,000 275,886
10/01/2036 5.000%   250,000 305,718
Revenue Bonds
Biola University
Series 2013
10/01/2024 5.000%   505,000 558,177
10/01/2028 5.000%   840,000 922,345
National University
Series 2019A
04/01/2035 5.000%   1,780,000 2,231,764
04/01/2036 5.000%   1,120,000 1,400,448
University of San Diego
Series 2019A
10/01/2037 5.000%   1,200,000 1,522,380
California Municipal Finance Authority(d)
Revenue Bonds
California Baptist University
Series 2016A
11/01/2026 4.000%   1,000,000 1,078,290
California Statewide Communities Development Authority(d)
Refunding Revenue Bonds
California Baptist University
Series 2017A
11/01/2032 5.000%   1,135,000 1,327,757
Revenue Bonds
California Baptist University
Series 2014A
11/01/2023 5.125%   480,000 507,005
Lancer Plaza Project
Series 2013
11/01/2023 5.125%   355,000 374,028
University of California
Refunding Revenue Bonds
Series 2020BE
05/15/2037 4.000%   2,665,000 3,240,160
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
9

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
University of California(e)
Refunding Revenue Bonds
Series 2022S
05/15/2030 5.000%   2,000,000 2,553,520
Total 28,266,139
Hospital 11.9%
California Health Facilities Financing Authority
Refunding Revenue Bonds
Cedars Sinai Medical Center
Series 2015
11/15/2028 5.000%   1,000,000 1,199,760
Children’s Hospital of Orange County
Series 2019
11/01/2030 5.000%   810,000 1,062,955
El Camino Hospital
Series 2015A
02/01/2027 5.000%   1,500,000 1,737,135
Marshall Medical Center
Series 2015
11/01/2023 5.000%   325,000 362,651
Providence St. Joseph Health System
Series 2019 (Mandatory Put 10/01/25)
10/01/2039 5.000%   2,500,000 2,984,125
Series 2019 (Mandatory Put 10/01/27)
10/01/2039 5.000%   2,775,000 3,483,763
Sutter Health
Series 2017A
11/15/2033 5.000%   1,000,000 1,249,440
Revenue Bonds
City of Hope Obligation Group
Series 2012A
11/15/2021 5.000%   600,000 615,456
El Camino Hospital
Series 2017
02/01/2033 5.000%   2,500,000 2,999,050
02/01/2034 5.000%   500,000 599,305
Kaiser Permanente
Subordinated Series 2017A-1-G
11/01/2027 5.000%   1,875,000 2,393,850
Lucile Salter Packard Children’s Hospital
Series 2014
08/15/2028 5.000%   300,000 338,481
Series 2017
11/15/2034 5.000%   250,000 305,558
11/15/2035 5.000%   270,000 329,351
Providence Health & Services
Series 2014A
10/01/2030 5.000%   1,500,000 1,730,040
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Sutter Health
Series 2018A
11/15/2034 5.000%   1,000,000 1,247,660
California Municipal Finance Authority
Refunding Revenue Bonds
Community Medical Centers
Series 2015A
02/01/2027 5.000%   1,200,000 1,372,464
Series 2017A
02/01/2033 5.000%   2,770,000 3,336,520
California Public Finance Authority
Refunding Revenue Bonds
Henry Mayo Newhall Hospital
Series 2021
10/15/2027 4.000%   400,000 465,892
10/15/2028 4.000%   360,000 423,133
California Statewide Communities Development Authority
Refunding Revenue Bonds
Enloe Medical Center
Series 2015
08/15/2030 5.000%   1,990,000 2,380,378
Huntington Memorial Hospital
Series 2014B
07/01/2033 5.000%   2,300,000 2,569,353
Revenue Bonds
Emanate Health
Series 2020A
04/01/2026 5.000%   570,000 686,423
Green - Marin General Hospital Project
Series 2018
08/01/2033 5.000%   425,000 509,592
08/01/2034 5.000%   650,000 777,530
Kaiser Permanente
Series 2019 (Mandatory Put 11/01/29)
04/01/2038 5.000%   2,500,000 3,312,275
04/01/2045 5.000%   5,000,000 6,624,550
Loma Linda University Medical Center
Series 2014
12/01/2034 5.250%   3,000,000 3,391,770
Methodist Hospital of Southern California
Series 2018
01/01/2036 5.000%   3,000,000 3,588,540
City of Upland
Refunding Certificate of Participation
San Antonio Regional Hospital
Series 2017
01/01/2034 5.000%   500,000 587,440
01/01/2036 4.000%   1,000,000 1,090,560
Total 53,755,000
 
The accompanying Notes to Financial Statements are an integral part of this statement.
10 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Human Service Provider 0.3%
California Municipal Finance Authority
Refunding Revenue Bonds
Harbor Regional Center Project
Series 2015
11/01/2032 5.000%   1,120,000 1,330,560
Joint Power Authority 0.9%
Middle Fork Project Finance Authority
Refunding Revenue Bonds
Series 2020
04/01/2030 5.000%   1,200,000 1,513,764
Northern California Transmission Agency
Refunding Revenue Bonds
California-Oregon Project
Series 2016
05/01/2032 5.000%   1,500,000 1,808,910
Southern California Public Power Authority
Refunding Revenue Bonds
Milford Wind Corridor Phase II Project Green Bonds
Series 2021
07/01/2029 5.000%   600,000 795,282
Total 4,117,956
Local Appropriation 2.4%
Anaheim Public Financing Authority
Refunding Revenue Bonds
Anaheim Public Improvement Projects
Series 2019 BAM
09/01/2031 5.000%   1,470,000 1,852,538
Los Angeles County Public Works Financing Authority
Revenue Bonds
Green Bonds - LACMA Building for the Permanent Collection Project
Series 2020A
12/01/2037 4.000%   2,415,000 2,922,440
Riverside Public Financing Authority
Refunding Revenue Bonds
Series 2012A
11/01/2027 5.000%   2,145,000 2,296,330
11/01/2028 5.000%   1,155,000 1,235,411
San Rafael Joint Powers Financing Authority
Revenue Bonds
Public Safety Facilities Project
Series 2018
06/01/2033 5.000%   850,000 1,058,114
06/01/2034 5.000%   775,000 962,162
South San Francisco Public Facilities Financing Authority
Revenue Bonds
Police Station Project
Series 2020A
06/01/2034 4.000%   410,000 496,572
Total 10,823,567
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Local General Obligation 8.1%
Chula Vista Elementary School District(f)
Unlimited General Obligation Bonds
BAN Series 2019
08/01/2023 0.000%   1,150,000 1,140,582
Compton Community College District
Unlimited General Obligation Refunding Bonds
Series 2012
07/01/2022 5.000%   2,095,000 2,211,775
Compton Unified School District
Unlimited General Obligation Bonds
Compton Unified School District
Series 2019B (BAM)
06/01/2029 5.000%   650,000 805,883
Compton Unified School District(f)
Unlimited General Obligation Bonds
Election of 2002 - Capital Appreciation
Series 2006C (AMBAC)
06/01/2023 0.000%   2,025,000 2,005,641
06/01/2024 0.000%   1,925,000 1,888,194
Conejo Valley Unified School District
Unlimited General Obligation Bonds
Series 2018B
08/01/2032 4.000%   2,000,000 2,380,040
Corona-Norco Unified School District
Unlimited General Obligation Bonds
Election 2014
Series 2018B
08/01/2034 4.000%   500,000 590,860
Culver City School Facilities Financing Authority
Revenue Bonds
Unified School District
Series 2005 (AGM)
08/01/2023 5.500%   1,490,000 1,669,143
Lodi Unified School District
Unlimited General Obligation Bonds
Election of 2016
Series 2020
08/01/2034 4.000%   750,000 882,990
08/01/2035 4.000%   600,000 705,204
Long Beach Unified School District(f)
Unlimited General Obligation Bonds
Series 2015D-1
08/01/2031 0.000%   1,375,000 1,022,216
Los Angeles Unified School District
Unlimited General Obligation Bonds
Election 2008
Series 2018B-1
07/01/2032 5.000%   4,000,000 5,030,120
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
11

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Monterey Peninsula Community College District(f)
Unlimited General Obligation Refunding Bonds
Series 2016
08/01/2028 0.000%   2,125,000 1,881,815
Napa Valley Community College District(g)
Unlimited General Obligation Refunding Bonds
Series 2018
08/01/2034 4.000%   1,595,000 1,811,537
Oakland Unified School District/Alameda County
Unlimited General Obligation Bonds
Series 2015A
08/01/2025 5.000%   650,000 769,620
Palomar Community College District(f)
Unlimited General Obligation Bonds
Capital Appreciation-Election of 2006
Series 2010B
08/01/2022 0.000%   2,140,000 2,134,457
Pomona Unified School District(f)
Unlimited General Obligation Bonds
Election 2008
Series 2016G (AGM)
08/01/2032 0.000%   1,000,000 752,680
Rancho Santiago Community College District(f)
Unlimited General Obligation Bonds
Capital Appreciation-Election of 2002
Series 2006C (AGM)
09/01/2031 0.000%   3,785,000 3,167,477
Rescue Union School District(f)
Unlimited General Obligation Bonds
Capital Appreciation-Election of 1998
Series 2005 (NPFGC)
09/01/2026 0.000%   1,100,000 1,040,094
San Diego Unified School District
Unlimited General Obligation Bonds
Series 2020D-2
07/01/2035 4.000%   1,000,000 1,224,360
Santa Monica Community College District
Unlimited General Obligation Bonds
Election 2016
Series 2018A
08/01/2034 4.000%   500,000 596,945
Sierra Kings Health Care District
Unlimited General Obligation Refunding Bonds
Series 2015
08/01/2028 5.000%   1,000,000 1,131,570
08/01/2032 5.000%   1,500,000 1,675,125
Total 36,518,328
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Multi-Family 1.0%
California Housing Finance
Revenue Bonds
Series 2019-2 Class A
03/20/2033 4.000%   1,175,617 1,377,634
California Municipal Finance Authority
Revenue Bonds
Bowles Hall Foundation
Series 2015A
06/01/2035 5.000%   400,000 443,252
Caritas Affordable Housing
Series 2014
08/15/2030 5.000%   1,000,000 1,108,280
California Statewide Communities Development Authority
Revenue Bonds
Lancer Educational Student Housing Project
Series 2019
06/01/2034 5.000%   375,000 437,194
Series 2017
05/15/2032 5.000%   1,000,000 1,200,440
Total 4,566,800
Municipal Power 5.7%
City of Redding Electric System
Refunding Revenue Bonds
Series 2017
06/01/2029 5.000%   1,250,000 1,552,288
City of Riverside Electric
Refunding Revenue Bonds
Series 2019A
10/01/2037 5.000%   1,000,000 1,279,290
Imperial Irrigation District Electric System
Refunding Revenue Bonds
Series 2011D
11/01/2022 5.000%   2,860,000 2,928,125
11/01/2023 5.000%   1,040,000 1,064,731
Los Angeles Department of Water & Power System
Refunding Revenue Bonds
Series 2018A
07/01/2035 5.000%   1,750,000 2,191,700
Series 2019B
07/01/2031 5.000%   5,000,000 6,473,250
Revenue Bonds
Power System
Series 2014D
07/01/2033 5.000%   1,700,000 1,946,976
Redding Joint Powers Financing Authority
Refunding Revenue Bonds
Series 2015A
06/01/2031 5.000%   1,045,000 1,250,813
 
The accompanying Notes to Financial Statements are an integral part of this statement.
12 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Sacramento Municipal Utility District
Revenue Bonds
Electric
Series 2020H
08/15/2033 5.000%   2,000,000 2,678,420
Turlock Irrigation District
Refunding Revenue Bonds
First Priority
Subordinated Series 2014
01/01/2030 5.000%   850,000 969,731
01/01/2031 5.000%   1,000,000 1,139,510
Series 2020
01/01/2038 5.000%   1,650,000 2,139,786
Total 25,614,620
Other Bond Issue 1.2%
California Infrastructure & Economic Development Bank
Refunding Revenue Bonds
Salvation Army Western Territory (The)
Series 2016
09/01/2033 4.000%   400,000 456,936
09/01/2034 4.000%   600,000 683,448
Walt Disney Family Museum
Series 2016
02/01/2032 4.000%   350,000 392,066
02/01/2033 4.000%   500,000 557,670
City of Long Beach Marina System
Revenue Bonds
Series 2015
05/15/2028 5.000%   635,000 724,021
County of San Diego
Refunding Revenue Bonds
Sanford Burnham Prebys Medical Discovery Group
Series 2015
11/01/2025 5.000%   350,000 418,887
Long Beach Bond Finance Authority
Refunding Revenue Bonds
Aquarium of the Pacific
Series 2012
11/01/2027 5.000%   2,210,000 2,258,311
Total 5,491,339
Pool / Bond Bank 0.6%
California Infrastructure & Economic Development Bank
Revenue Bonds
Green Bonds
Series 2019
10/01/2031 5.000%   2,120,000 2,743,937
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Ports 3.1%
City of Long Beach Harbor(c)
Refunding Revenue Bonds
Private Activity
Series 2020B
05/15/2024 5.000%   5,000,000 5,670,450
City of Long Beach Harbor
Revenue Bonds
Series 2019A
05/15/2036 5.000%   700,000 901,852
Port Commission of the City & County of San Francisco
Refunding Revenue Bonds
Series 2020A
03/01/2037 4.000%   315,000 371,763
03/01/2038 4.000%   405,000 475,924
03/01/2039 4.000%   1,260,000 1,476,733
Port of Los Angeles(c)
Refunding Revenue Bonds
Private Activity
Series 2019A
08/01/2025 5.000%   1,750,000 2,061,587
Port of Oakland(c)
Refunding Revenue Bonds
Intermediate Lien
Series 2021
05/01/2029 5.000%   500,000 641,720
San Diego Unified Port District
Refunding Revenue Bonds
Series 2013A
09/01/2027 5.000%   1,000,000 1,102,650
09/01/2028 5.000%   1,100,000 1,212,200
Total 13,914,879
Prepaid Gas 0.6%
M-S-R Energy Authority
Revenue Bonds
Series 2009B
11/01/2029 6.125%   1,970,000 2,517,818
Recreation 0.4%
Del Mar Race Track Authority
Refunding Revenue Bonds
Series 2015
10/01/2025 5.000%   1,665,000 1,774,224
Refunded / Escrowed 6.7%
ABAG Finance Authority for Nonprofit Corps.
Prerefunded 08/01/21 Revenue Bonds
Sharp Healthcare
Series 2011A
08/01/2024 5.250%   2,750,000 2,784,073
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
13

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
California Educational Facilities Authority
Revenue Bonds
University of Southern California
Series 2009C Escrowed to Maturity
10/01/2024 5.250%   3,000,000 3,513,210
California Health Facilities Financing Authority
Prerefunded 08/15/21 Revenue Bonds
Sutter Health Obligation Group
Series 2011D
08/15/2026 5.000%   2,250,000 2,280,780
California Statewide Communities Development Authority
Prerefunded 10/01/24 Revenue Bonds
Henry Mayo Newhall Memorial Hospital
Series 2014A (AGM)
10/01/2027 5.000%   1,000,000 1,153,350
Chino Public Financing Authority
Prerefunded 09/01/22 Special Tax Bonds
Series 2012
09/01/2023 5.000%   1,070,000 1,137,324
City of La Verne
Prerefunded 05/15/22 Certificate of Participation
Brethren Hillcrest Homes
Series 2014
05/15/2024 5.000%   310,000 328,436
05/15/2025 5.000%   530,000 561,519
05/15/2026 5.000%   700,000 741,629
05/15/2029 5.000%   1,135,000 1,202,498
City of Los Angeles
Prerefunded 09/01/21 Unlimited General Obligation Bonds
Series 2011A
09/01/2025 5.000%   3,000,000 3,048,030
City of Newport Beach
Prerefunded 12/01/21 Revenue Bonds
Hoag Memorial Hospital Presbyterian
Series 2011
12/01/2030 5.875%   1,000,000 1,033,060
La Quinta Redevelopment Agency Successor Agency
Prerefunded 09/01/23 Tax Allocation Bonds
Redevelopment Project
Subordinated Series 2013A
09/01/2030 5.000%   1,500,000 1,668,780
Long Beach Community College District
Prerefunded 08/01/22 Unlimited General Obligation Bonds
2008 Election
Series 2012B
08/01/2023 5.000%   700,000 742,637
Poway Unified School District
Prerefunded 09/01/22 Special Tax Bonds
Community Facilities District No. 6-4S Ranch
Series 2012
09/01/2028 5.000%   1,770,000 1,882,590
09/01/2029 5.000%   1,195,000 1,271,014
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Semitropic Improvement District
Prerefunded 12/01/22 Revenue Bonds
Series 2012A
12/01/2023 5.000%   2,850,000 3,065,460
Sulphur Springs Union School District
Prerefunded 09/01/22 Special Tax Bonds
Community Facilities District
Series 2012
09/01/2028 5.000%   520,000 552,718
09/01/2029 5.000%   585,000 621,808
West Contra Costa Unified School District
Prerefunded 08/01/22 Unlimited General Obligation Bonds
Series 2012
08/01/2027 5.000%   2,365,000 2,507,515
Total 30,096,431
Retirement Communities 4.4%
ABAG Finance Authority for Nonprofit Corps.
Revenue Bonds
Odd Fellows Home of California
Series 2012A
04/01/2032 5.000%   4,750,000 5,090,337
California Health Facilities Financing Authority
Refunding Revenue Bonds
Northern California Presbyterian Homes
Series 2015
07/01/2028 5.000%   310,000 363,621
07/01/2029 5.000%   300,000 351,024
California Municipal Finance Authority
Refunding Revenue Bonds
HumanGood Obligation Group
Series 2019A
10/01/2034 4.000%   500,000 561,075
10/01/2035 4.000%   1,000,000 1,118,700
Mt. San Antonio Gardens Project
Series 2019
11/15/2039 5.000%   1,000,000 1,160,760
Retirement Housing Foundation
Series 2017
11/15/2029 5.000%   390,000 475,036
11/15/2030 5.000%   600,000 737,634
11/15/2032 5.000%   850,000 1,064,447
California Statewide Communities Development Authority
Refunding Revenue Bonds
American Baptist Homes West
Series 2015
10/01/2024 5.000%   2,575,000 2,913,741
10/01/2026 5.000%   1,000,000 1,158,720
Episcopal Communities and Services
Series 2012
05/15/2027 5.000%   1,520,000 1,575,738
 
The accompanying Notes to Financial Statements are an integral part of this statement.
14 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Front Porch Communities & Services
Series 2017
04/01/2030 5.000%   150,000 177,816
Revenue Bonds
Insured Redwoods Project
Series 2013
11/15/2028 5.000%   1,000,000 1,103,330
Viamonte Senior Living 1, Inc.
Series 2018
07/01/2035 4.000%   300,000 348,219
07/01/2036 4.000%   430,000 497,798
Los Angeles County Regional Financing Authority
Revenue Bonds
Montecedro, Inc. Project
Series 2014A
11/15/2034 5.000%   1,000,000 1,061,000
Total 19,758,996
Sales Tax 1.1%
California Statewide Communities Development Authority
Certificate of Participation
Total Road Improvement Program
Series 2018B (AGM)
12/01/2035 5.000%   1,405,000 1,742,172
City of Sacramento Transient Occupancy
Revenue Bonds
Convention Center Complex
Subordinated Series 2018
06/01/2035 5.000%   615,000 743,824
06/01/2036 5.000%   1,180,000 1,423,564
Los Angeles County Metropolitan Transportation Authority
Revenue Bonds
Green Bonds
Series 2020
06/01/2037 4.000%   1,000,000 1,220,470
Total 5,130,030
Special Non Property Tax 0.2%
Berkeley Joint Powers Financing Authority
Revenue Bonds
Series 2016 (BAM)
06/01/2033 4.000%   415,000 461,248
06/01/2034 4.000%   250,000 277,297
Total 738,545
Special Property Tax 13.4%
Carson Public Financing Authority
Revenue Bonds
Series 2019
09/02/2026 5.000%   650,000 788,508
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Irvine
Refunding Special Assessment Bonds
Limited Obligation Reassessment District
Series 2015
09/02/2025 5.000%   1,295,000 1,554,091
Special Assessment Refunding Bonds
Series 2019
09/02/2031 5.000%   325,000 427,931
09/02/2032 5.000%   340,000 444,237
Concord Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Series 2014 (BAM)
03/01/2025 5.000%   840,000 980,902
County of El Dorado
Refunding Special Tax Bonds
Community Facilities District No. 92-1
Series 2012
09/01/2026 5.000%   625,000 665,437
09/01/2027 5.000%   800,000 851,208
Emeryville Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Series 2014A (AGM)
09/01/2023 5.000%   2,415,000 2,671,594
09/01/2026 5.000%   1,000,000 1,139,850
09/01/2027 5.000%   1,000,000 1,136,110
09/01/2030 5.000%   815,000 920,168
09/01/2031 5.000%   590,000 666,098
Garden Grove Agency Community Development Successor Agency
Refunding Tax Allocation Bonds
Garden Grove Community Project
Series 2016 (BAM)
10/01/2030 5.000%   1,040,000 1,236,196
10/01/2031 5.000%   1,640,000 1,945,942
Glendale Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Central Glendale Redevelopment
Subordinated Series 2013 (AGM)
12/01/2021 5.000%   755,000 775,725
Inglewood Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Merged Redevelopment Project
Subordinated Series 2017 (BAM)
05/01/2032 5.000%   500,000 612,940
05/01/2033 5.000%   1,000,000 1,223,930
Irvine Unified School District
Refunding Special Tax Bonds
Series 2015
09/01/2030 5.000%   2,065,000 2,385,034
09/01/2031 5.000%   2,720,000 3,141,382
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
15

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Jurupa Public Financing Authority
Refunding Special Tax Bonds
Series 2014A
09/01/2029 5.000%   530,000 607,221
09/01/2030 5.000%   625,000 716,037
09/01/2032 5.000%   625,000 715,806
Los Angeles Community Facilities District
Refunding Special Tax Bonds
Playa Vista-Phase 1
Series 2014
09/01/2030 5.000%   985,000 1,121,816
Los Angeles County Redevelopment Authority
Refunding Tax Allocation Bonds
Los Angeles Bunker Hill Project
Series 2014C (AGM)
12/01/2028 5.000%   6,060,000 6,969,545
Oakland Redevelopment Successor Agency
Refunding Tax Allocation Bonds
Subordinated Series 2013
09/01/2022 5.000%   2,000,000 2,117,860
Oakley Redevelopment Agency
Refunding Tax Allocation Bonds
Oakley Redevelopment Project Area
Series 2018 (BAM)
09/01/2032 5.000%   335,000 414,171
09/01/2033 5.000%   730,000 896,936
09/01/2034 5.000%   500,000 612,835
Palm Desert Redevelopment Agency
Refunding Tax Allocation Bonds
Series 2017A (BAM)
10/01/2029 5.000%   890,000 1,094,335
10/01/2030 5.000%   350,000 429,069
Poway Unified School District Public Financing Authority
Special Tax Refunding Bonds
Series 2015B
09/01/2026 5.000%   995,000 1,191,124
Rancho Cucamonga Redevelopment Agency Successor Agency
Tax Allocation Bonds
Rancho Redevelopment Project Area
Series 2014
09/01/2030 5.000%   700,000 793,520
Series 2014 (AGM)
09/01/2027 5.000%   2,200,000 2,509,562
Riverside County Public Financing Authority
Tax Allocation Bonds
Project Area #1-Desert Communities
Series 2016 (BAM)
10/01/2031 4.000%   2,500,000 2,752,525
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
San Francisco City & County Redevelopment Agency
Refunding Tax Allocation Bonds
Mission Bay North Redevelopment Project
Series 2016
08/01/2030 5.000%   275,000 328,309
08/01/2031 5.000%   355,000 422,560
Mission Bay South Redevelopment Project
Series 2016
08/01/2031 5.000%   670,000 797,508
08/01/2032 5.000%   580,000 688,796
Tax Allocation Bonds
Mission Bay South Redevelopment Project
Series 2014A
08/01/2029 5.000%   225,000 253,096
08/01/2030 5.000%   175,000 196,343
San Mateo Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Series 2015A
08/01/2028 5.000%   1,860,000 2,147,575
08/01/2029 5.000%   1,000,000 1,149,060
Semitropic Improvement District
Refunding Revenue Bonds
Series 2015A 2nd Lien (AGM)
12/01/2023 5.000%   300,000 337,428
12/01/2024 5.000%   400,000 467,888
Sulphur Springs Union School District
Unrefunded Special Tax Bonds
Community Facilities District
Series 2012
09/01/2028 5.000%   530,000 563,120
09/01/2029 5.000%   595,000 632,182
Transbay Joint Powers Authority
Senior Tax Allocation Bonds
Green Bonds
Series 2020A
10/01/2033 5.000%   500,000 637,105
Tustin Community Facilities District
Refunding Special Tax Bonds
Legacy Villages of Columbus #06-1
Series 2015
09/01/2029 5.000%   1,200,000 1,413,828
Tustin Community Redevelopment Agency Successor Agency
Refunding Tax Allocation Bonds
Series 2016
09/01/2032 4.000%   2,295,000 2,625,296
Vista Redevelopment Agency Successor Agency
Tax Allocation Refunding Bonds
Series 2015B1 (AGM)
09/01/2024 5.000%   580,000 665,968
09/01/2026 5.000%   700,000 823,928
Total 60,659,635
 
The accompanying Notes to Financial Statements are an integral part of this statement.
16 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
State Appropriated 4.6%
California State Public Works Board
Refunding Revenue Bonds
Various Capital Projects
Series 2012G
11/01/2028 5.000%   1,500,000 1,603,260
Series 2020C
03/01/2033 5.000%   1,800,000 2,361,186
Revenue Bonds
Department of Corrections and Rehabilitation
Series 2014C
10/01/2022 5.000%   1,925,000 2,056,843
Series 2015A
06/01/2028 5.000%   1,175,000 1,389,026
Various Capital Projects
Series 2013I
11/01/2028 5.250%   3,000,000 3,366,150
Series 2014E
09/01/2030 5.000%   1,500,000 1,720,710
Various Correctional Facilities
Series 2014A
09/01/2031 5.000%   3,000,000 3,439,290
California State Public Works Board(e)
Refunding Revenue Bonds
Various Purpose
Series 2022A
08/01/2036 5.000%   4,000,000 5,084,040
Total 21,020,505
State General Obligation 2.8%
State of California
Unlimited General Obligation Bonds
Series 2019
04/01/2031 5.000%   1,000,000 1,301,580
Series 2020
11/01/2034 4.000%   1,000,000 1,235,020
Unlimited General Obligation Refunding Bonds
Series 2014
08/01/2032 5.000%   3,000,000 3,437,790
Series 2019
10/01/2025 5.000%   2,435,000 2,931,326
Series 2021
12/01/2030 5.000%   1,800,000 2,440,584
Various Purpose
Series 2020
03/01/2033 5.000%   1,000,000 1,315,680
Total 12,661,980
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Tobacco 3.6%
California County Tobacco Securitization Agency
Refunding Revenue Bonds
Series 2020A
06/01/2030 5.000%   250,000 331,447
06/01/2032 5.000%   250,000 327,600
06/01/2033 5.000%   250,000 325,860
06/01/2034 4.000%   200,000 242,736
Golden State Tobacco Securitization Corp.
Asset-Backed Refunding Revenue Bonds
Series 2015A
06/01/2033 5.000%   4,000,000 4,688,280
Refunding Revenue Bonds
Series 2017A-1
06/01/2024 5.000%   4,000,000 4,542,560
Series 2018A
06/01/2022 5.000%   3,000,000 3,155,130
Tobacco Securitization Authority of Northern California
Refunding Revenue Bonds
Sacramento County Tobacco Securitization Corp. Senior Bonds
Series 2021
06/01/2032 5.000%   400,000 527,928
06/01/2033 5.000%   500,000 656,180
Tobacco Securitization Authority of Southern California
Refunding Revenue Bonds
San Diego County Tobacco Asset Securitization Corp.
Series 2019
06/01/2030 5.000%   1,220,000 1,594,162
Total 16,391,883
Transportation 0.5%
Peninsula Corridor Joint Powers Board
Refunding Revenue Bonds
Series 2019A
10/01/2036 5.000%   315,000 400,765
10/01/2037 5.000%   300,000 380,595
San Diego Association of Governments
Revenue Bonds
Green Bonds - Mid Coast Corridor
Series 2019
11/15/2027 1.800%   1,500,000 1,579,620
Total 2,360,980
Turnpike / Bridge / Toll Road 2.1%
Bay Area Toll Authority
Refunding Revenue Bonds
Subordinated Series 2017
04/01/2031 4.000%   2,000,000 2,357,120
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Foothill-Eastern Transportation Corridor Agency(f)
Refunding Revenue Bonds
Series 2015
01/15/2033 0.000%   5,000,000 3,821,950
Foothill-Eastern Transportation Corridor Agency
Refunding Revenue Bonds
Subordinated Series 2014B-3 (Mandatory Put 01/15/23)
01/15/2053 5.500%   3,000,000 3,176,910
Total 9,355,980
Water & Sewer 3.2%
Beaumont Public Improvement Authority
Revenue Bonds
Series 2018-A (AGM)
09/01/2033 5.000%   500,000 605,780
09/01/2035 5.000%   830,000 1,002,408
City of Riverside Water
Refunding Revenue Bonds
Series 2019A
10/01/2032 5.000%   1,500,000 1,962,345
City of Tulare Sewer
Refunding Revenue Bonds
Series 2015 (AGM)
11/15/2025 5.000%   700,000 832,559
11/15/2026 5.000%   1,000,000 1,198,270
Livermore Valley Water Financing Authority
Refunding Revenue Bonds
Series 2018A
07/01/2034 4.000%   920,000 1,069,233
Los Angeles County Sanitation Districts Financing Authority
Refunding Revenue Bonds
Capital Projects - District #14
Subordinated Series 2015
10/01/2024 5.000%   1,050,000 1,220,730
Mountain House Public Financing Authority
Revenue Bonds
Green Bonds
Subordinated Series 2020B (BAM)
12/01/2035 4.000%   1,000,000 1,187,810
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Santa Paula Utility Authority
Refunding Revenue Bonds
Series 2019 (AGM)
02/01/2034 4.000%   575,000 666,523
02/01/2036 4.000%   1,325,000 1,523,644
Stockton Public Financing Authority
Refunding Revenue Bonds
Series 2014 (BAM)
09/01/2028 5.000%   1,500,000 1,714,980
Union Sanitary District Financing Author
Revenue Bonds
Series 2020A
09/01/2037 4.000%   400,000 477,880
09/01/2038 4.000%   325,000 387,234
09/01/2039 4.000%   600,000 713,172
Total 14,562,568
Total Municipal Bonds
(Cost $421,634,704)
451,169,621
    
Money Market Funds 0.8%
  Shares Value ($)
Dreyfus AMT-Free Tax Exempt Cash Management Fund, Institutional Shares, 0.010%(h) 147,817 147,803
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(h) 3,446,402 3,446,402
Total Money Market Funds
(Cost $3,594,219)
3,594,205
Total Investments in Securities
(Cost: $425,763,923)
455,298,826
Other Assets & Liabilities, Net   (3,760,871)
Net Assets 451,537,955
 
Notes to Portfolio of Investments
(a) The Fund is entitled to receive principal and interest from the guarantor after a day or a week’s notice or upon maturity. The maturity date disclosed represents the final maturity.
(b) Represents a variable rate security where the coupon rate adjusts on specified dates (generally daily or weekly) using the prevailing money market rate. The interest rate shown was the current rate as of April 30, 2021.
(c) Income from this security may be subject to alternative minimum tax.
(d) Represents privately placed and other securities and instruments exempt from Securities and Exchange Commission registration (collectively, private placements), such as Section 4(a)(2) and Rule 144A eligible securities, which are often sold only to qualified institutional buyers. At April 30, 2021, the total value of these securities amounted to $20,865,911, which represents 4.62% of total net assets.
(e) Represents a security purchased on a when-issued basis.
(f) Zero coupon bond.
The accompanying Notes to Financial Statements are an integral part of this statement.
18 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Notes to Portfolio of Investments  (continued)
(g) Represents a variable rate security with a step coupon where the rate adjusts according to a schedule for a series of periods, typically lower for an initial period and then increasing to a higher coupon rate thereafter. The interest rate shown was the current rate as of April 30, 2021.
(h) The rate shown is the seven-day current annualized yield at April 30, 2021.
Abbreviation Legend
AGM Assured Guaranty Municipal Corporation
AMBAC Ambac Assurance Corporation
BAM Build America Mutual Assurance Co.
BAN Bond Anticipation Note
NPFGC National Public Finance Guarantee Corporation
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Floating Rate Notes 535,000 535,000
Municipal Bonds 451,169,621 451,169,621
Money Market Funds 3,594,205 3,594,205
Total Investments in Securities 3,594,205 451,704,621 455,298,826
See the Portfolio of Investments for all investment classifications not indicated in the table.
The Fund’s assets assigned to the Level 2 input category are generally valued using the market approach, in which a security’s value is determined through reference to prices and information from market transactions for similar or identical assets.
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
19

Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $425,763,923) $455,298,826
Cash 3,098
Receivable for:  
Capital shares sold 374,378
Interest 5,070,165
Expense reimbursement due from Investment Manager 1,434
Prepaid expenses 13,318
Total assets 460,761,219
Liabilities  
Payable for:  
Investments purchased on a delayed delivery basis 7,450,720
Capital shares purchased 771,655
Distributions to shareholders 819,962
Management services fees 5,797
Distribution and/or service fees 444
Transfer agent fees 49,422
Compensation of board members 106,906
Other expenses 18,358
Total liabilities 9,223,264
Net assets applicable to outstanding capital stock $451,537,955
Represented by  
Paid in capital 426,678,464
Total distributable earnings (loss) 24,859,491
Total - representing net assets applicable to outstanding capital stock $451,537,955
Class A  
Net assets $34,289,025
Shares outstanding 3,200,522
Net asset value per share $10.71
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $11.04
Advisor Class  
Net assets $2,961,100
Shares outstanding 277,157
Net asset value per share $10.68
Class C  
Net assets $7,657,581
Shares outstanding 715,196
Net asset value per share $10.71
Institutional Class  
Net assets $388,016,626
Shares outstanding 36,298,014
Net asset value per share $10.69
Institutional 2 Class  
Net assets $13,265,237
Shares outstanding 1,244,664
Net asset value per share $10.66
Institutional 3 Class  
Net assets $5,348,386
Shares outstanding 500,697
Net asset value per share $10.68
The accompanying Notes to Financial Statements are an integral part of this statement.
20 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $6,930
Interest 13,074,034
Total income 13,080,964
Expenses:  
Management services fees 2,147,926
Distribution and/or service fees  
Class A 82,027
Class C 88,557
Transfer agent fees  
Class A 39,011
Advisor Class 3,251
Class C 10,504
Institutional Class 471,757
Institutional 2 Class 7,110
Institutional 3 Class 554
Compensation of board members 56,309
Custodian fees 2,729
Printing and postage fees 18,020
Registration fees 20,436
Audit fees 29,500
Legal fees 12,086
Compensation of chief compliance officer 91
Other 19,457
Total expenses 3,009,325
Fees waived or expenses reimbursed by Investment Manager and its affiliates (555,285)
Expense reduction (20)
Total net expenses 2,454,020
Net investment income 10,626,944
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 185,992
Net realized gain 185,992
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers 20,199,703
Net change in unrealized appreciation (depreciation) 20,199,703
Net realized and unrealized gain 20,385,695
Net increase in net assets resulting from operations $31,012,639
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
21

Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $10,626,944 $11,007,834
Net realized gain (loss) 185,992 (402,775)
Net change in unrealized appreciation (depreciation) 20,199,703 (10,259,961)
Net increase in net assets resulting from operations 31,012,639 345,098
Distributions to shareholders    
Net investment income and net realized gains    
Class A (688,337) (725,273)
Advisor Class (64,148) (69,934)
Class C (119,563) (170,563)
Institutional Class (9,327,171) (9,604,298)
Institutional 2 Class (294,403) (323,534)
Institutional 3 Class (133,322) (114,507)
Total distributions to shareholders (10,626,944) (11,008,109)
Increase (decrease) in net assets from capital stock activity (11,808,581) 51,042,670
Total increase in net assets 8,577,114 40,379,659
Net assets at beginning of year 442,960,841 402,581,182
Net assets at end of year $451,537,955 $442,960,841
The accompanying Notes to Financial Statements are an integral part of this statement.
22 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 781,435 8,350,473 913,135 9,698,460
Distributions reinvested 55,054 587,853 59,744 635,235
Redemptions (703,175) (7,481,214) (964,067) (10,226,058)
Net increase 133,314 1,457,112 8,812 107,637
Advisor Class        
Subscriptions 84,581 900,844 140,274 1,492,366
Distributions reinvested 5,999 63,904 6,559 69,630
Redemptions (44,041) (469,445) (132,178) (1,354,984)
Net increase 46,539 495,303 14,655 207,012
Class C        
Subscriptions 27,785 296,107 87,790 927,960
Distributions reinvested 9,709 103,608 12,229 130,000
Redemptions (337,458) (3,599,661) (152,244) (1,606,884)
Net decrease (299,964) (3,199,946) (52,225) (548,924)
Institutional Class        
Subscriptions 6,464,387 68,605,365 10,501,340 110,653,165
Distributions reinvested 216,565 2,307,750 221,814 2,353,657
Redemptions (7,845,171) (83,207,549) (6,146,605) (64,470,459)
Net increase (decrease) (1,164,219) (12,294,434) 4,576,549 48,536,363
Institutional 2 Class        
Subscriptions 357,324 3,811,786 417,161 4,431,416
Distributions reinvested 27,703 294,403 30,536 323,277
Redemptions (205,282) (2,165,875) (407,144) (4,270,053)
Net increase 179,745 1,940,314 40,553 484,640
Institutional 3 Class        
Subscriptions 273,185 2,915,379 288,319 3,069,271
Distributions reinvested 12,411 132,126 10,782 114,233
Redemptions (304,786) (3,254,435) (88,923) (927,562)
Net increase (decrease) (19,190) (206,930) 210,178 2,255,942
Total net increase (decrease) (1,123,775) (11,808,581) 4,798,522 51,042,670
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
23

Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.24 0.22 0.47 0.69 (0.22) (0.22)
Year Ended 4/30/2020 $10.46 0.24 (0.22) 0.02 (0.24) (0.24)
Year Ended 4/30/2019 $10.23 0.27 0.23 0.50 (0.27) (0.27)
Year Ended 4/30/2018 $10.38 0.27 (0.15) 0.12 (0.27) (0.27)
Year Ended 4/30/2017 $10.72 0.26 (0.34) (0.08) (0.26) (0.26)
Advisor Class
Year Ended 4/30/2021 $10.21 0.25 0.47 0.72 (0.25) (0.25)
Year Ended 4/30/2020 $10.43 0.27 (0.22) 0.05 (0.27) (0.27)
Year Ended 4/30/2019 $10.20 0.30 0.23 0.53 (0.30) (0.30)
Year Ended 4/30/2018 $10.36 0.29 (0.16) 0.13 (0.29) (0.29)
Year Ended 4/30/2017 $10.69 0.29 (0.33) (0.04) (0.29) (0.29)
Class C
Year Ended 4/30/2021 $10.23 0.14 0.48 0.62 (0.14) (0.14)
Year Ended 4/30/2020 $10.46 0.16 (0.23) (0.07) (0.16) (0.16)
Year Ended 4/30/2019 $10.22 0.20 0.24 0.44 (0.20) (0.20)
Year Ended 4/30/2018 $10.38 0.19 (0.16) 0.03 (0.19) (0.19)
Year Ended 4/30/2017 $10.72 0.18 (0.34) (0.16) (0.18) (0.18)
Institutional Class
Year Ended 4/30/2021 $10.21 0.25 0.48 0.73 (0.25) (0.25)
Year Ended 4/30/2020 $10.44 0.27 (0.23) 0.04 (0.27) (0.27)
Year Ended 4/30/2019 $10.21 0.30 0.23 0.53 (0.30) (0.30)
Year Ended 4/30/2018 $10.36 0.29 (0.15) 0.14 (0.29) (0.29)
Year Ended 4/30/2017 $10.70 0.28 (0.33) (0.05) (0.29) (0.29)
Institutional 2 Class
Year Ended 4/30/2021 $10.18 0.26 0.48 0.74 (0.26) (0.26)
Year Ended 4/30/2020 $10.41 0.27 (0.22) 0.05 (0.28) (0.28)
Year Ended 4/30/2019 $10.18 0.30 0.23 0.53 (0.30) (0.30)
Year Ended 4/30/2018 $10.33 0.30 (0.15) 0.15 (0.30) (0.30)
Year Ended 4/30/2017 $10.67 0.29 (0.34) (0.05) (0.29) (0.29)
The accompanying Notes to Financial Statements are an integral part of this statement.
24 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.71 6.80% 0.87% 0.75%(c) 2.09% 5% $34,289
Year Ended 4/30/2020 $10.24 0.17% 0.86% 0.75%(c) 2.30% 6% $31,402
Year Ended 4/30/2019 $10.46 5.00% 0.87% 0.74%(c) 2.67% 17% $31,998
Year Ended 4/30/2018 $10.23 1.10% 0.88% 0.74%(c) 2.56% 5% $27,341
Year Ended 4/30/2017 $10.38 (0.75%) 0.92% 0.74%(c) 2.45% 17% $31,273
Advisor Class
Year Ended 4/30/2021 $10.68 7.08% 0.62% 0.50%(c) 2.34% 5% $2,961
Year Ended 4/30/2020 $10.21 0.41% 0.61% 0.50%(c) 2.54% 6% $2,354
Year Ended 4/30/2019 $10.43 5.28% 0.62% 0.49%(c) 2.92% 17% $2,254
Year Ended 4/30/2018 $10.20 1.25% 0.63% 0.49%(c) 2.83% 5% $1,931
Year Ended 4/30/2017 $10.36 (0.42%) 0.67% 0.49%(c) 2.71% 17% $903
Class C
Year Ended 4/30/2021 $10.71 6.11% 1.62% 1.50%(c) 1.35% 5% $7,658
Year Ended 4/30/2020 $10.23 (0.68%) 1.61% 1.50%(c) 1.54% 6% $10,387
Year Ended 4/30/2019 $10.46 4.32% 1.62% 1.49%(c) 1.92% 17% $11,161
Year Ended 4/30/2018 $10.22 0.25% 1.63% 1.49%(c) 1.81% 5% $13,508
Year Ended 4/30/2017 $10.38 (1.49%) 1.67% 1.49%(c) 1.71% 17% $15,503
Institutional Class
Year Ended 4/30/2021 $10.69 7.18% 0.62% 0.50%(c) 2.34% 5% $388,017
Year Ended 4/30/2020 $10.21 0.31% 0.61% 0.50%(c) 2.54% 6% $382,665
Year Ended 4/30/2019 $10.44 5.27% 0.62% 0.49%(c) 2.92% 17% $343,276
Year Ended 4/30/2018 $10.21 1.35% 0.63% 0.49%(c) 2.82% 5% $365,455
Year Ended 4/30/2017 $10.36 (0.51%) 0.67% 0.49%(c) 2.71% 17% $371,130
Institutional 2 Class
Year Ended 4/30/2021 $10.66 7.26% 0.56% 0.44% 2.40% 5% $13,265
Year Ended 4/30/2020 $10.18 0.37% 0.55% 0.44% 2.60% 6% $10,846
Year Ended 4/30/2019 $10.41 5.34% 0.56% 0.43% 2.98% 17% $10,662
Year Ended 4/30/2018 $10.18 1.42% 0.56% 0.42% 2.89% 5% $7,363
Year Ended 4/30/2017 $10.33 (0.42%) 0.55% 0.41% 2.80% 17% $4,867
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Total
distributions to
shareholders
Institutional 3 Class
Year Ended 4/30/2021 $10.21 0.26 0.47 0.73 (0.26) (0.26)
Year Ended 4/30/2020 $10.43 0.28 (0.22) 0.06 (0.28) (0.28)
Year Ended 4/30/2019 $10.20 0.31 0.23 0.54 (0.31) (0.31)
Year Ended 4/30/2018 $10.35 0.30 (0.15) 0.15 (0.30) (0.30)
Year Ended 4/30/2017(d) $10.27 0.05 0.08 0.13 (0.05) (0.05)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) The benefits derived from expense reductions had an impact of less than 0.01%.
(d) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(e) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Institutional 3 Class
Year Ended 4/30/2021 $10.68 7.19% 0.51% 0.39% 2.45% 5% $5,348
Year Ended 4/30/2020 $10.21 0.52% 0.50% 0.39% 2.64% 6% $5,307
Year Ended 4/30/2019 $10.43 5.39% 0.51% 0.38% 3.02% 17% $3,231
Year Ended 4/30/2018 $10.20 1.46% 0.52% 0.38% 2.95% 5% $866
Year Ended 4/30/2017(d) $10.35 1.27% 0.52%(e) 0.36%(e) 2.98%(e) 17% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia California Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class, Institutional 2 Class and Institutional 3 Class shares are available for purchase through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Debt securities generally are valued by pricing services approved by the Board of Trustees based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques that take into account, as applicable, factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as approved independent broker-dealer quotes. Debt securities for which quotations are not readily available or not believed to be reflective of market value may also be valued based upon a bid quote from an approved independent broker-dealer. Debt securities maturing in 60 days or less are valued primarily at amortized market value, unless this method results in a valuation that management believes does not approximate fair value.
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Delayed delivery securities
The Fund may trade securities on other than normal settlement terms, including securities purchased or sold on a “when-issued” or "forward commitment" basis. This may increase risk to the Fund since the other party to the transaction may fail to deliver, which could cause the Fund to subsequently invest at less advantageous prices. The Fund designates cash or liquid securities in an amount equal to the delayed delivery commitment.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 2 Class and Institutional 3 Class shares are subject to an annual limitation of not more than 0.07% and 0.02%, respectively, of the average daily net assets attributable to each share class.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.12
Advisor Class 0.12
Class C 0.12
Institutional Class 0.12
Institutional 2 Class 0.06
Institutional 3 Class 0.01
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, these minimum account balance fees reduced total expenses of the Fund by $20.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 12,838
Class C 1.00(b)
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  Fee rate(s) contractual
through
August 31, 2021
Class A 0.75%
Advisor Class 0.50
Class C 1.50
Institutional Class 0.50
Institutional 2 Class 0.44
Institutional 3 Class 0.39
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. In addition to the contractual agreement, the Investment Manager and certain of its affiliates have voluntarily agreed to waive fees and/or reimburse Fund expenses (excluding certain fees and expenses described above) so that Fund level expenses (expenses directly attributable to the Fund and not to a specific share class) are waived proportionately across all share classes. This arrangement may be revised or discontinued at any time. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, distributions, capital loss carryforward, re-characterization of distributions for investments and investments in partnerships. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
Excess of distributions
over net investment
income ($)
Accumulated
net realized
(loss) ($)
Paid in
capital ($)
60 (60)
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
52,808 10,574,136 10,626,944 65,502 10,942,607 11,008,109
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
873,937 (4,623,250) 29,534,841
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
425,763,985 29,679,906 (145,065) 29,534,841
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
The following capital loss carryforwards, determined at April 30, 2021, may be available to reduce future net realized gains on investments, if any, to the extent permitted by the Internal Revenue Code. In addition, for the year ended April 30, 2021, capital loss carryforwards utilized, if any, were as follows:
No expiration
short-term ($)
No expiration
long-term ($)
Total ($) Utilized ($)
(4,408,702) (214,548) (4,623,250) 185,994
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $31,589,197 and $23,676,472, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
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33

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
35

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
Shareholder concentration risk
At April 30, 2021, one unaffiliated shareholder of record owned 65.1% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued and noted no items requiring adjustment of the financial statements or additional disclosure.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
36 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia California Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia California Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the custodian and brokers; when replies were not received from brokers and/or agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
37

Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Exempt-
interest
dividends
 
99.50%  
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
38 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
40 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
42 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
44 Columbia California Intermediate Municipal Bond Fund  | Annual Report 2021

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 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
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Columbia California Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/
ANN122_04_L01_(06/21)

Annual Report
April 30, 2021
Columbia Virginia Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia Virginia Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia Virginia Intermediate Municipal Bond Fund  |  Annual Report 2021

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Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and Virginia individual income tax, consistent with moderate fluctuation of principal.
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2016
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 12/05/89 5.42 2.08 2.74
  Including sales charges   2.28 1.45 2.43
Advisor Class* 03/19/13 5.78 2.36 3.01
Class C Excluding sales charges 06/17/92 4.63 1.32 1.97
  Including sales charges   3.63 1.32 1.97
Institutional Class 09/20/89 5.68 2.34 3.00
Institutional 3 Class* 03/01/17 5.86 2.43 3.05
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance for more information.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
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Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia Virginia Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Quality breakdown (%) (at April 30, 2021)
AAA rating 8.8
AA rating 62.4
A rating 14.3
BBB rating 9.0
BB rating 0.6
Not rated 4.9
Total 100.0
Percentages indicated are based upon total fixed income investments.
Bond ratings apply to the underlying holdings of the Fund and not the Fund itself and are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. The ratings assigned by credit rating agencies are but one of the considerations that the Investment Manager and/or Fund’s subadviser incorporates into its credit analysis process, along with such other issuer-specific factors as cash flows, capital structure and leverage ratios, ability to de-leverage (repay) through free cash flow, quality of management, market positioning and access to capital, as well as such security-specific factors as the terms of the security (e.g., interest rate and time to maturity) and the amount and type of any collateral.
4 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

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Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 5.42% excluding sales charges. The Fund’s Institutional Class shares returned 5.68%. During the same time period, the Fund’s benchmark, the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). National municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating the continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
Within Virginia, state economic conditions and revenue collections recovered over the period, driven in large part by an unprecedented level of federal stimulus into the U.S. economy. On March 30, 2021, the state’s unemployment rate was 5.1%, which was significantly lower than the state’s unemployment rate in April 2020. A further boost to Virginia’s economic conditions is that the state is expected to receive $3.77B of direct federal aid, equal to about 7% of its annual budget, from the American Rescue Plan passed in March 2021.
The Fund’s most notable detractors during the period
The Virginia municipal bond market slightly lagged the broader national market as risk overall was rewarded over the course of the reporting period.
In the intermediate space, Virginia municipal bonds couldn’t keep pace with similar maturity municipal bonds from other states, weighing on the Fund’s results versus the benchmark, which is national in scope.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
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Manager Discussion of Fund Performance  (continued)
The Fund was underweight in municipal bonds rated BBB, a segment of the municipal market that outperformed during the period.
The Virginia municipal market is populated with generally higher quality issuers, presenting a headwind as lower investment-grade municipal bonds outperformed.
The Fund’s overweight to pre-refunded municipal bonds and municipal bonds rated AA, and the Fund’s underweight to municipal bonds rated A detracted from relative performance, as higher rated municipal bonds underperformed lower quality muni bonds during the period.
The Fund’s cash position and exposure to municipal bonds with maturities shorter than the benchmark (less than 2 years) also weighed on Fund results.
Security selection within the lease and transportation sectors weighed on relative results. This was more a function of the benchmark’s non-Virginia municipal bonds in these sectors outperforming.
The Fund’s most notable contributors during the period
The Fund’s underweight to municipal bonds rated AAA contributed to performance, as higher rated municipal bonds underperformed lower quality municipal bonds during the period.
An underweight in municipal bonds in the 2-5 year maturity range contributed to the Fund’s performance.
The Fund’s overall duration positioning helped as the Fund was modestly long in duration, as compared to the benchmark, for portions of the period while yields were declining.
Overweight allocations to the hospital, transportation and leasing sectors benefited Fund results.
Security selection within the hospital and CCRC (continuing care retirement community) sectors also contributed to results.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling underlying investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to this report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

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Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,014.80 1,020.89 4.07 4.08 0.81
Advisor Class 1,000.00 1,000.00 1,016.00 1,022.14 2.81 2.82 0.56
Class C 1,000.00 1,000.00 1,011.00 1,017.15 7.82 7.85 1.56
Institutional Class 1,000.00 1,000.00 1,016.00 1,022.14 2.81 2.82 0.56
Institutional 3 Class 1,000.00 1,000.00 1,016.40 1,022.54 2.41 2.42 0.48
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
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Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Floating Rate Notes 0.3%
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
Variable Rate Demand Notes 0.3%
Virginia College Building Authority(a),(b)
Revenue Bonds
University of Richmond Project
Series 2009 (Wells Fargo Bank)
11/01/2036 0.030%   400,000 400,000
Total Floating Rate Notes
(Cost $400,000)
400,000
Municipal Bonds 97.7%
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Airport 6.1%
Capital Region Airport Commission
Refunding Revenue Bonds
Series 2016A
07/01/2034 4.000%   1,125,000 1,257,885
Metropolitan Washington Airports Authority(c)
Refunding Revenue Bonds
Airport System
Series 2019A
10/01/2033 5.000%   2,000,000 2,546,720
Forward Delivery
Series 2020A
10/01/2032 5.000%   2,000,000 2,617,040
Norfolk Airport Authority
Refunding Revenue Bonds
Series 2011 (AGM)
07/01/2024 5.000%   1,000,000 1,007,280
Revenue Bonds
Series 2019
07/01/2033 5.000%   1,000,000 1,271,110
Total 8,700,035
Higher Education 6.0%
Amherst Industrial Development Authority
Refunding Revenue Bonds
Educational Facilities Sweet Briar Institute
Series 2006
09/01/2026 5.000%   785,000 782,402
Virginia College Building Authority
Revenue Bonds
Washington & Lee University Project
Series 1998 (NPFGC)
01/01/2026 5.250%   3,115,000 3,512,754
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Virginia Commonwealth University
Refunding Revenue Bonds
General Pledge
Series 2018A
11/01/2031 5.000%   400,000 508,248
Series 2020A
11/01/2027 5.000%   520,000 656,724
Virginia Polytechnic Institute & State University
Revenue Bonds
General Dorm and Dining Hall
Series 2015A
06/01/2027 4.000%   2,650,000 3,020,390
Total 8,480,518
Hospital 9.1%
Arlington County Industrial Development Authority
Refunding Revenue Bonds
Virginia Hospital Center
Series 2020
07/01/2033 5.000%   400,000 520,876
Fairfax County Industrial Development Authority
Refunding Revenue Bonds
Inova Health System
Series 2018
05/15/2026 5.000%   1,500,000 1,829,265
Norfolk Economic Development Authority
Refunding Revenue Bonds
Sentara Healthcare
Series 2012B
11/01/2027 5.000%   1,735,000 1,853,362
Series 2018A (Mandatory Put 11/01/28)
11/01/2048 5.000%   300,000 385,470
Roanoke Economic Development Authority
Refunding Revenue Bonds
Carilion Clinic Obligated Group
Series 2020 (Mandatory Put 07/01/30)
07/01/2053 5.000%   2,500,000 3,267,225
Stafford County Economic Development Authority
Refunding Revenue Bonds
Mary Washington Healthcare
Series 2016
06/15/2030 5.000%   1,300,000 1,544,530
06/15/2033 5.000%   200,000 235,838
06/15/2035 5.000%   1,000,000 1,175,350
Virginia Small Business Financing Authority
Refunding Revenue Bonds
Sentara Healthcare
Series 2020
11/01/2030 5.000%   220,000 284,990
11/01/2031 5.000%   270,000 348,300
The accompanying Notes to Financial Statements are an integral part of this statement.
8 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

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Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Winchester Economic Development Authority
Refunding Revenue Bonds
Valley Health System Obligation Group
Series 2015
01/01/2032 5.000%   1,250,000 1,454,762
Total 12,899,968
Investor Owned 2.9%
Louisa Industrial Development Authority
Refunding Revenue Bonds
Pollution Control
Series 2019 (Mandatory Put 04/01/22)
11/01/2035 1.800%   2,000,000 2,027,000
Revenue Bonds
Virginia Electric and Power Co. Project
Series 2008B (Mandatory Put 09/02/25)
11/01/2035 0.750%   1,000,000 1,001,400
Wise County Industrial Development Authority
Revenue Bonds
Virginia Electric & Power Co.
Series 2015A (Mandatory Put 05/31/24)
11/01/2040 1.200%   1,125,000 1,149,525
Total 4,177,925
Local Appropriation 5.2%
Appomattox County Economic Development Authority
Unrefunded Revenue Bonds
Series 2010
05/01/2022 5.000%   175,000 175,570
Arlington County Industrial Development Authority
Refunding Revenue Bonds
Series 2017
02/15/2029 5.000%   1,000,000 1,257,820
Chesterfield County Economic Development Authority
Revenue Bonds
Series 2020F
04/01/2030 5.000%   2,000,000 2,674,440
Fairfax County Economic Development Authority
Revenue Bonds
Metrorail Parking Systems
Series 2017
04/01/2033 5.000%   745,000 916,477
Henry County Industrial Development Authority
Revenue Bonds
Public Facility Lease
Series 2018
11/01/2036 4.000%   1,000,000 1,151,320
Loudoun County Economic Development Authority
Revenue Bonds
Series 2015
12/01/2028 5.000%   1,035,000 1,197,019
Total 7,372,646
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Local General Obligation 5.0%
City of Alexandria Virginia
Unlimited General Obligation Refunding Bonds
Series 2017C
07/01/2030 4.000%   1,000,000 1,184,000
City of Richmond
Unlimited General Obligation Bonds
Public Improvement
Series 2015B
03/01/2028 4.000%   2,000,000 2,258,080
County of Arlington
Unlimited General Obligation Bonds
Series 2017
08/15/2034 4.000%   2,000,000 2,336,760
County of Fairfax
Unlimited General Obligation Public Improvement Bonds
Series 2019A
10/01/2035 5.000%   1,000,000 1,294,290
Total 7,073,130
Multi-Family 2.4%
Farmville Industrial Development Authority
Refunding Revenue Bonds
Longwood University Student Project
Series 2018
01/01/2038 5.000%   1,000,000 1,176,280
Virginia Housing Development Authority
Revenue Bonds
Series 2020B (HUD)
03/01/2031 1.650%   1,630,000 1,642,551
Series 2020E
07/01/2035 2.100%   650,000 660,114
Total 3,478,945
Other Bond Issue 4.1%
Montgomery County Economic Development Authority
Refunding Revenue Bonds
Virginia Tech Foundation
Series 2017A
06/01/2029 5.000%   200,000 249,438
Series 2019
06/01/2031 5.000%   1,200,000 1,560,612
Riverside Regional Jail Authority
Refunding Revenue Bonds
Series 2015
07/01/2028 5.000%   2,685,000 3,177,966
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
9

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Western Regional Jail Authority
Refunding Revenue Bonds
Series 2015
12/01/2027 5.000%   750,000 902,603
Total 5,890,619
Pool / Bond Bank 2.9%
Virginia Resources Authority
Refunding Revenue Bonds
Revolving Fund
Series 2011A
08/01/2024 5.000%   1,395,000 1,411,545
Virginia Infrastructure Pooled
Series 2017F
11/01/2034 4.000%   1,000,000 1,170,060
Virginia Pooled Financing Program
Series 2019C
11/01/2033 5.000%   1,165,000 1,544,871
Total 4,126,476
Ports 1.4%
Virginia Port Authority Commonwealth Port Fund(c)
Refunding Revenue Bonds
Series 2020B
07/01/2028 5.000%   1,615,000 2,039,099
Refunded / Escrowed 15.8%
Chesapeake Bay Bridge & Tunnel District
Refunding Revenue Bonds
General Resolution
Series 1998 Escrowed to Maturity (NPFGC)
07/01/2025 5.500%   4,000,000 4,669,120
City of Norfolk
Prerefunded 03/01/27 Unlimited General Obligation Bonds
Series 2017C
09/01/2033 4.000%   1,380,000 1,649,045
Prerefunded 08/01/28 Unlimited General Obligation Bonds
Capital Improvement
08/01/2033 5.000%   1,000,000 1,299,820
City of Suffolk
Prerefunded 02/01/24 Unlimited General Obligation Bonds
Series 2014
02/01/2029 4.000%   2,000,000 2,207,680
County of Smyth
Prerefunded 11/01/21 Unlimited General Obligation Bonds
Public Improvement
Series 2011A
11/01/2031 5.000%   4,000,000 4,096,520
Hampton Roads Sanitation District
Prerefunded 08/01/26 Revenue Bonds
Subordinated Series 2016A
08/01/2031 5.000%   2,000,000 2,461,520
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Rappahannock Regional Jail Authority
Prerefunded 10/01/25 Revenue Bonds
Series 2015
10/01/2030 5.000%   1,725,000 2,068,861
Virginia Commonwealth Transportation Board
Prerefunded 05/15/22 Revenue Bonds
Capital Projects
Series 2012
05/15/2029 5.000%   3,000,000 3,151,050
Western Regional Jail Authority
Prerefunded 12/01/25 Revenue Bonds
Series 2015
12/01/2027 5.000%   750,000 902,460
Total 22,506,076
Retirement Communities 5.9%
Albermarle County Economic Development Authority
Revenue Bonds
Westminster-Canterbury of the Blue Ridge
Series 2012
01/01/2032 4.625%   2,000,000 2,031,000
Hanover County Economic Development Authority
Refunding Revenue Bonds
Covenant Woods
Series 2018
07/01/2038 5.000%   380,000 413,706
Revenue Bonds
Covenant Woods
Series 2012A
07/01/2022 4.000%   410,000 415,609
Henrico County Economic Development Authority
Refunding Revenue Bonds
Westminster Canterbury of Richmond
Series 2020
10/01/2033 4.000%   500,000 564,935
Westminster Canterbury Project
Series 2018
10/01/2037 5.000%   1,500,000 1,679,670
Rockingham County Economic Development Authority
Refunding Revenue Bonds
Sunnyside Presbyterian Home
Series 2020
12/01/2039 5.000%   2,000,000 2,418,040
Virginia Small Business Financing Authority
Refunding Revenue Bonds
National Senior Campuses
Series 2020
01/01/2027 5.000%   325,000 394,820
01/01/2029 5.000%   400,000 498,700
Total 8,416,480
 
The accompanying Notes to Financial Statements are an integral part of this statement.
10 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Sales Tax 1.6%
Northern Virginia Transportation Authority
Revenue Bonds
Series 2014
06/01/2032 5.000%   2,000,000 2,273,700
Special Non Property Tax 3.8%
Greater Richmond Convention Center Authority
Refunding Revenue Bonds
Series 2015
06/15/2029 5.000%   1,350,000 1,577,488
06/15/2030 5.000%   1,540,000 1,791,929
Hampton Roads Transportation Accountability Commission
Revenue Bonds
Senior Lien
Series 2020A
07/01/2033 5.000%   500,000 665,730
Senior Lien Hampton Roads Transportation Fund
Series 2018A
07/01/2032 5.000%   1,150,000 1,441,951
Total 5,477,098
Special Property Tax 3.9%
Dulles Town Center Community Development Authority
Refunding Special Assessment Bonds
Dulles Town Center Project
Series 2012
03/01/2023 4.000%   1,000,000 1,008,540
Fairfax County Economic Development Authority
Refunding Special Tax Bonds
Silver Line Phase I Project
Series 2016
04/01/2031 4.000%   1,000,000 1,151,070
04/01/2032 4.000%   1,000,000 1,150,030
Marquis Community Development Authority of York County(d),(e)
Revenue Bonds
Convertible
Series 2015
09/01/2045 0.000%   644,000 309,120
Marquis Community Development Authority of York County
Tax Allocation Bonds
Series 2007B
09/01/2041 5.625%   2,084,000 1,017,742
Marquis Community Development Authority of York County(f)
Tax Allocation Bonds
Series 2007C
09/01/2041 0.000%   3,164,000 179,051
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Virginia Gateway Community Development Authority
Refunding Special Assessment Bonds
Series 2012
03/01/2025 5.000%   690,000 699,149
Total 5,514,702
State Appropriated 4.8%
Virginia College Building Authority
Revenue Bonds
21st Century College Program
Series 2017
02/01/2034 4.000%   1,500,000 1,728,840
Virginia Commonwealth Transportation Board
Refunding Revenue Bonds
Northern Virginia Transportation District Program
Series 2019
05/15/2031 5.000%   1,000,000 1,301,800
Virginia Public Building Authority
Revenue Bonds
Series 2018A
08/01/2035 4.000%   1,500,000 1,778,265
Series 2019A
08/01/2031 5.000%   1,500,000 1,965,420
Total 6,774,325
Transportation 10.0%
Virginia Commonwealth Transportation Board
Refunding Revenue Bonds
GARVEE Notes
Series 2017
03/15/2028 5.000%   1,000,000 1,265,860
Revenue Bonds
Series 2016
05/15/2030 4.000%   500,000 578,440
Series 2018
05/15/2036 4.000%   2,000,000 2,369,140
Washington Metropolitan Area Transit Authority
Refunding Revenue Bonds
Series 2017A-1
07/01/2029 5.000%   2,500,000 3,121,150
Revenue Bonds
Series 2017B
07/01/2034 5.000%   2,000,000 2,454,560
Series 2018
07/01/2036 5.000%   500,000 611,295
07/01/2037 5.000%   1,000,000 1,219,800
Series 2020A
07/15/2037 5.000%   2,000,000 2,615,580
Total 14,235,825
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
11

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Turnpike / Bridge / Toll Road 5.0%
City of Chesapeake Expressway Toll Road
Revenue Bonds
Transportation System
Series 2012A
07/15/2023 5.000%   1,025,000 1,080,442
07/15/2027 5.000%   1,000,000 1,050,370
Metropolitan Washington Airports Authority Dulles Toll Road(f)
Revenue Bonds
Capital Appreciation-2nd Senior Lien
Series 2009B (AGM)
10/01/2023 0.000%   5,000,000 4,954,400
Total 7,085,212
Water & Sewer 1.8%
Fairfax County Water Authority
Refunding Revenue Bonds
Series 2017
04/01/2029 5.000%   2,000,000 2,499,500
Total Municipal Bonds
(Cost $132,249,153)
139,022,279
Money Market Funds 1.1%
  Shares Value ($)
Dreyfus AMT-Free Tax Exempt Cash Management Fund, Institutional Shares, 0.010%(g) 108,432 108,422
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(g) 1,408,374 1,408,374
Total Money Market Funds
(Cost $1,516,806)
1,516,796
Total Investments in Securities
(Cost: $134,165,959)
140,939,075
Other Assets & Liabilities, Net   1,290,785
Net Assets 142,229,860
 
Notes to Portfolio of Investments
(a) The Fund is entitled to receive principal and interest from the guarantor after a day or a week’s notice or upon maturity. The maturity date disclosed represents the final maturity.
(b) Represents a variable rate security where the coupon rate adjusts on specified dates (generally daily or weekly) using the prevailing money market rate. The interest rate shown was the current rate as of April 30, 2021.
(c) Income from this security may be subject to alternative minimum tax.
(d) Represents privately placed and other securities and instruments exempt from Securities and Exchange Commission registration (collectively, private placements), such as Section 4(a)(2) and Rule 144A eligible securities, which are often sold only to qualified institutional buyers. At April 30, 2021, the total value of these securities amounted to $309,120, which represents 0.22% of total net assets.
(e) Represents a variable rate security with a step coupon where the rate adjusts according to a schedule for a series of periods, typically lower for an initial period and then increasing to a higher coupon rate thereafter. The interest rate shown was the current rate as of April 30, 2021.
(f) Zero coupon bond.
(g) The rate shown is the seven-day current annualized yield at April 30, 2021.
Abbreviation Legend
AGM Assured Guaranty Municipal Corporation
HUD Department of Housing and Urban Development
NPFGC National Public Finance Guarantee Corporation
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Fair value measurements  (continued)
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Floating Rate Notes 400,000 400,000
Municipal Bonds 139,022,279 139,022,279
Money Market Funds 1,516,796 1,516,796
Total Investments in Securities 1,516,796 139,422,279 140,939,075
See the Portfolio of Investments for all investment classifications not indicated in the table.
The Fund’s assets assigned to the Level 2 input category are generally valued using the market approach, in which a security’s value is determined through reference to prices and information from market transactions for similar or identical assets.
The accompanying Notes to Financial Statements are an integral part of this statement.
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13

Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $134,165,959) $140,939,075
Cash 286
Receivable for:  
Capital shares sold 102,491
Interest 1,638,691
Expense reimbursement due from Investment Manager 308
Prepaid expenses 10,462
Total assets 142,691,313
Liabilities  
Payable for:  
Capital shares purchased 32,438
Distributions to shareholders 265,613
Management services fees 1,831
Distribution and/or service fees 255
Transfer agent fees 4,104
Compensation of board members 140,508
Other expenses 16,704
Total liabilities 461,453
Net assets applicable to outstanding capital stock $142,229,860
Represented by  
Paid in capital 135,526,909
Total distributable earnings (loss) 6,702,951
Total - representing net assets applicable to outstanding capital stock $142,229,860
Class A  
Net assets $29,427,157
Shares outstanding 2,733,829
Net asset value per share $10.76
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $11.09
Advisor Class  
Net assets $2,233,202
Shares outstanding 207,339
Net asset value per share $10.77
Class C  
Net assets $1,963,980
Shares outstanding 182,296
Net asset value per share $10.77
Institutional Class  
Net assets $24,242,761
Shares outstanding 2,252,576
Net asset value per share $10.76
Institutional 3 Class  
Net assets $84,362,760
Shares outstanding 7,819,666
Net asset value per share $10.79
The accompanying Notes to Financial Statements are an integral part of this statement.
14 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $2,635
Interest 4,183,920
Total income 4,186,555
Expenses:  
Management services fees 682,392
Distribution and/or service fees  
Class A 66,038
Class C 19,499
Transfer agent fees  
Class A 23,558
Advisor Class 1,302
Class C 1,741
Institutional Class 22,841
Institutional 3 Class 6,135
Compensation of board members 66,212
Custodian fees 1,420
Printing and postage fees 15,091
Registration fees 14,759
Audit fees 29,500
Legal fees 9,310
Compensation of chief compliance officer 29
Other 12,396
Total expenses 972,223
Fees waived or expenses reimbursed by Investment Manager and its affiliates (150,545)
Total net expenses 821,678
Net investment income 3,364,877
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 74,407
Net realized gain 74,407
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers 4,565,772
Net change in unrealized appreciation (depreciation) 4,565,772
Net realized and unrealized gain 4,640,179
Net increase in net assets resulting from operations $8,005,056
The accompanying Notes to Financial Statements are an integral part of this statement.
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15

Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $3,364,877 $3,866,590
Net realized gain 74,407 172,217
Net change in unrealized appreciation (depreciation) 4,565,772 (1,850,197)
Net increase in net assets resulting from operations 8,005,056 2,188,610
Distributions to shareholders    
Net investment income and net realized gains    
Class A (573,166) (604,645)
Advisor Class (35,603) (14,886)
Class C (27,718) (42,554)
Institutional Class (618,517) (660,100)
Institutional 3 Class (2,249,860) (2,564,324)
Total distributions to shareholders (3,504,864) (3,886,509)
Increase (decrease) in net assets from capital stock activity (1,298,995) 2,841,294
Total increase in net assets 3,201,197 1,143,395
Net assets at beginning of year 139,028,663 137,885,268
Net assets at end of year $142,229,860 $139,028,663
The accompanying Notes to Financial Statements are an integral part of this statement.
16 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 622,057 6,699,388 339,312 3,629,435
Distributions reinvested 32,201 346,743 30,965 331,285
Redemptions (225,524) (2,426,151) (313,177) (3,337,602)
Net increase 428,734 4,619,980 57,100 623,118
Advisor Class        
Subscriptions 174,907 1,885,006 57,672 622,442
Distributions reinvested 3,278 35,337 1,365 14,619
Redemptions (34,679) (366,346) (21,158) (223,181)
Net increase 143,506 1,553,997 37,879 413,880
Class C        
Subscriptions 52,738 569,956 31,779 341,570
Distributions reinvested 2,435 26,241 3,512 37,612
Redemptions (62,256) (671,157) (109,857) (1,169,786)
Net decrease (7,083) (74,960) (74,566) (790,604)
Institutional Class        
Subscriptions 470,262 5,051,695 542,873 5,783,235
Distributions reinvested 40,814 439,425 46,011 492,237
Redemptions (613,050) (6,610,693) (387,225) (4,122,582)
Net increase (decrease) (101,974) (1,119,573) 201,659 2,152,890
Institutional 3 Class        
Subscriptions 781,373 8,440,077 1,330,228 14,289,173
Distributions reinvested 7,327 79,105 6,808 73,014
Redemptions (1,370,751) (14,797,621) (1,301,241) (13,920,177)
Net increase (decrease) (582,051) (6,278,439) 35,795 442,010
Total net increase (decrease) (118,868) (1,298,995) 257,867 2,841,294
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.43 0.22 0.34 0.56 (0.22) (0.01) (0.23)
Year Ended 4/30/2020 $10.55 0.26 (0.11) 0.15 (0.27) (0.00)(c) (0.27)
Year Ended 4/30/2019 $10.44 0.27 0.21 0.48 (0.29) (0.08) (0.37)
Year Ended 4/30/2018 $10.79 0.27 (0.31) (0.04) (0.28) (0.03) (0.31)
Year Ended 4/30/2017 $11.18 0.28 (0.34) (0.06) (0.30) (0.03) (0.33)
Advisor Class
Year Ended 4/30/2021 $10.43 0.25 0.35 0.60 (0.25) (0.01) (0.26)
Year Ended 4/30/2020 $10.55 0.29 (0.12) 0.17 (0.29) (0.00)(c) (0.29)
Year Ended 4/30/2019 $10.44 0.30 0.20 0.50 (0.31) (0.08) (0.39)
Year Ended 4/30/2018 $10.79 0.30 (0.31) (0.01) (0.31) (0.03) (0.34)
Year Ended 4/30/2017 $11.18 0.31 (0.34) (0.03) (0.33) (0.03) (0.36)
Class C
Year Ended 4/30/2021 $10.44 0.14 0.34 0.48 (0.14) (0.01) (0.15)
Year Ended 4/30/2020 $10.55 0.18 (0.10) 0.08 (0.19) (0.00)(c) (0.19)
Year Ended 4/30/2019 $10.45 0.20 0.19 0.39 (0.21) (0.08) (0.29)
Year Ended 4/30/2018 $10.80 0.19 (0.31) (0.12) (0.20) (0.03) (0.23)
Year Ended 4/30/2017 $11.19 0.20 (0.34) (0.14) (0.22) (0.03) (0.25)
Institutional Class
Year Ended 4/30/2021 $10.43 0.25 0.34 0.59 (0.25) (0.01) (0.26)
Year Ended 4/30/2020 $10.54 0.29 (0.11) 0.18 (0.29) (0.00)(c) (0.29)
Year Ended 4/30/2019 $10.44 0.30 0.20 0.50 (0.32) (0.08) (0.40)
Year Ended 4/30/2018 $10.79 0.30 (0.31) (0.01) (0.31) (0.03) (0.34)
Year Ended 4/30/2017 $11.18 0.31 (0.34) (0.03) (0.33) (0.03) (0.36)
The accompanying Notes to Financial Statements are an integral part of this statement.
18 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.76 5.42% 0.91% 0.81% 2.07% 10% $29,427
Year Ended 4/30/2020 $10.43 1.35% 0.87% 0.81% 2.47% 12% $24,036
Year Ended 4/30/2019 $10.55 4.69% 0.88% 0.81%(d) 2.63% 13% $23,706
Year Ended 4/30/2018 $10.44 (0.39%) 0.89% 0.81%(d) 2.55% 14% $27,005
Year Ended 4/30/2017 $10.79 (0.51%) 0.95% 0.81% 2.56% 7% $28,168
Advisor Class
Year Ended 4/30/2021 $10.77 5.78% 0.66% 0.56% 2.31% 10% $2,233
Year Ended 4/30/2020 $10.43 1.60% 0.61% 0.55% 2.70% 12% $666
Year Ended 4/30/2019 $10.55 4.95% 0.63% 0.56%(d) 2.87% 13% $274
Year Ended 4/30/2018 $10.44 (0.14%) 0.63% 0.56%(d) 2.80% 14% $1,823
Year Ended 4/30/2017 $10.79 (0.26%) 0.70% 0.56% 2.81% 7% $812
Class C
Year Ended 4/30/2021 $10.77 4.63% 1.66% 1.56% 1.32% 10% $1,964
Year Ended 4/30/2020 $10.44 0.69% 1.62% 1.56% 1.73% 12% $1,976
Year Ended 4/30/2019 $10.55 3.81% 1.63% 1.56%(d) 1.88% 13% $2,786
Year Ended 4/30/2018 $10.45 (1.13%) 1.64% 1.56%(d) 1.79% 14% $3,824
Year Ended 4/30/2017 $10.80 (1.25%) 1.70% 1.56% 1.82% 7% $4,938
Institutional Class
Year Ended 4/30/2021 $10.76 5.68% 0.66% 0.56% 2.32% 10% $24,243
Year Ended 4/30/2020 $10.43 1.70% 0.62% 0.55% 2.72% 12% $24,546
Year Ended 4/30/2019 $10.54 4.86% 0.63% 0.56%(d) 2.88% 13% $22,698
Year Ended 4/30/2018 $10.44 (0.15%) 0.65% 0.56%(d) 2.76% 14% $29,199
Year Ended 4/30/2017 $10.79 (0.26%) 0.70% 0.56% 2.82% 7% $161,853
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Institutional 3 Class
Year Ended 4/30/2021 $10.45 0.26 0.35 0.61 (0.26) (0.01) (0.27)
Year Ended 4/30/2020 $10.57 0.30 (0.12) 0.18 (0.30) (0.00)(c) (0.30)
Year Ended 4/30/2019 $10.46 0.31 0.21 0.52 (0.33) (0.08) (0.41)
Year Ended 4/30/2018 $10.82 0.31 (0.32) (0.01) (0.32) (0.03) (0.35)
Year Ended 4/30/2017(e) $10.75 0.05 0.08(f) 0.13 (0.06) (0.06)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) Rounds to zero.
(d) The benefits derived from expense reductions had an impact of less than 0.01%.
(e) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(f) Calculation of the net gain (loss) per share (both realized and unrealized) does not correlate to the aggregate realized and unrealized gain (loss) presented in the Statement of Operations due to the timing of subscriptions and redemptions of Fund shares in relation to fluctuations in the market value of the portfolio.
(g) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Institutional 3 Class
Year Ended 4/30/2021 $10.79 5.86% 0.58% 0.47% 2.40% 10% $84,363
Year Ended 4/30/2020 $10.45 1.69% 0.53% 0.47% 2.81% 12% $87,804
Year Ended 4/30/2019 $10.57 5.04% 0.54% 0.47% 2.97% 13% $88,421
Year Ended 4/30/2018 $10.46 (0.13%) 0.54% 0.48% 2.91% 14% $102,071
Year Ended 4/30/2017(e) $10.82 1.17% 0.55%(g) 0.42%(g) 3.04%(g) 7% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia Virginia Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class and Institutional 3 Class shares are available through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Debt securities generally are valued by pricing services approved by the Board of Trustees based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques that take into account, as applicable, factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as approved independent broker-dealer quotes. Debt securities for which quotations are not readily available or not believed to be reflective of market value may also be valued based upon a bid quote from an approved independent broker-dealer. Debt securities maturing in 60 days or less are valued primarily at amortized market value, unless this method results in a valuation that management believes does not approximate fair value.
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 3 Class shares are subject to an annual limitation of not more than 0.02% of the average daily net assets attributable to Institutional 3 Class shares.
24 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.09
Advisor Class 0.09
Class C 0.09
Institutional Class 0.09
Institutional 3 Class 0.01
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, no minimum account balance fees were charged by the Fund.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 13,658
Class C 1.00(b) 496
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  September 1, 2020
through
August 31, 2021
Prior to
September 1, 2020
Class A 0.81% 0.81%
Advisor Class 0.56 0.56
Class C 1.56 1.56
Institutional Class 0.56 0.56
Institutional 3 Class 0.48 0.47
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. In addition to the contractual agreement, the Investment Manager and certain of its affiliates have voluntarily agreed to waive fees and/or reimburse Fund expenses (excluding certain fees and expenses described above) so that Fund level expenses (expenses directly attributable to the Fund and not to a specific share class) are waived proportionately across all share classes. This arrangement may be revised or discontinued at any time. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, distributions, and re-characterization of distributions of investments. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
Excess of distributions
over net investment
income ($)
Accumulated
net realized
gain ($)
Paid in
capital ($)
(1) 1
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
69,355 3,316,525 118,984 3,504,864 46,176 3,820,413 19,920 3,886,509
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
315,039 20,269 6,773,116
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
134,165,959 9,202,237 (2,429,121) 6,773,116
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $13,457,287 and $16,409,784, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
Shareholder concentration risk
At April 30, 2021, one unaffiliated shareholder of record owned 66.2% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued and noted no items requiring adjustment of the financial statements or additional disclosure.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
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Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia Virginia Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia Virginia Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the custodian and broker. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
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Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Capital
gain
dividend
Exempt-
interest
dividends
$78,128 98.56%
Capital gain dividend. The Fund designates as a capital gain dividend the amount reflected above, or if subsequently determined to be different, the net capital gain of such fiscal period.
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
32 Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
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Table of Contents
 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
Columbia Virginia Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Columbia Virginia Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/
ANN239_04_L01_(06/21)

Annual Report
April 30, 2021
Columbia South Carolina Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia South Carolina Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia South Carolina Intermediate Municipal Bond Fund  |  Annual Report 2021

Table of Contents
Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and South Carolina individual income tax, consistent with moderate fluctuation of principal.
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2016
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 05/05/92 5.05 2.15 3.00
  Including sales charges   1.92 1.52 2.68
Advisor Class* 03/19/13 5.31 2.42 3.26
Class C Excluding sales charges 06/17/92 4.26 1.39 2.23
  Including sales charges   3.26 1.39 2.23
Institutional Class 01/06/92 5.41 2.41 3.26
Institutional 3 Class* 03/01/17 5.42 2.50 3.31
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance for more information.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia South Carolina Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Quality breakdown (%) (at April 30, 2021)
AAA rating 7.1
AA rating 42.8
A rating 46.1
BBB rating 2.1
BB rating 0.9
Not rated 1.0
Total 100.0
Percentages indicated are based upon total fixed income investments.
Bond ratings apply to the underlying holdings of the Fund and not the Fund itself and are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. The ratings assigned by credit rating agencies are but one of the considerations that the Investment Manager and/or Fund’s subadviser incorporates into its credit analysis process, along with such other issuer-specific factors as cash flows, capital structure and leverage ratios, ability to de-leverage (repay) through free cash flow, quality of management, market positioning and access to capital, as well as such security-specific factors as the terms of the security (e.g., interest rate and time to maturity) and the amount and type of any collateral.
4 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

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Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 5.05% excluding sales charges. The Fund’s Institutional Class shares returned 5.41%. During the same time period, the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, national municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). Municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
Within South Carolina, economic conditions and revenue collections recovered over the period, driven in large part by an unprecedented level of federal stimulus into the U.S. economy. The state’s unemployment rate, as of March 30, 2021, was 5.1%, significantly lower than the rate as of April 2020. Further, with the American Rescue Plan, passed in March 2021, South Carolina is expected to receive $2.10 billion in direct federal aid, which is equal to about 8% of its annual budget.
The Fund’s most notable detractors during the period
Duration positioning was a detractor as the Fund’s duration was below that of the benchmark during the whole period.
The Fund’s duration was shortened for the first eight months of the period due to investor inflows, combined with very little new issuance and availability of secondary offerings in the South Carolina municipal bond market.
What secondary offerings were available were priced at levels that we believe made them very unattractive.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Manager Discussion of Fund Performance  (continued)
Further exacerbating the challenge of sourcing South Carolina municipal bonds was the profile of what limited issuance actually existed. Negotiated and competitive issued deals rarely offered the opportunity to buy longer intermediate positions. Deals tended to come with shorter maturities and/or very low coupons, such as 3% and 2%. We did not find these issue terms to be appealing opportunities for the Fund’s portfolio.
As an alternative, we pursued investing some of the available cash in a broad market exchange-traded municipal fund. This investment was temporary until more attractive opportunities became available in the South Carolina municipal bond market.
The Fund had meaningful exposure (approximately 25%) to local appropriation bonds during the period. Because there are restrictions in South Carolina as to how much general obligation debt municipalities can issue, this level of exposure to local appropriation bonds in the portfolio is not unusual. South Carolina local appropriation bonds, however, underperformed during the period versus the benchmark.
The Fund’s most notable contributors during the period
The Fund’s overweighted allocation to lower investment-grade (A rated) municipal bonds was the biggest positive contributor as lower rated municipal bonds outperformed higher quality municipal bonds during the period.
Within this broader lower investment-grade quality segment, the hospital, education and public power sectors were positive contributors to performance. Each of these sectors outperformed during the period and the Fund’s overweight to each boosted the Fund’s returns.
Lower coupon bonds were a bright spot during the period with 4% coupon bonds outperforming the historically more common 5% coupon structure.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling underlying investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to this report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,011.50 1,020.89 4.06 4.08 0.81
Advisor Class 1,000.00 1,000.00 1,012.80 1,022.14 2.81 2.82 0.56
Class C 1,000.00 1,000.00 1,007.70 1,017.15 7.81 7.85 1.56
Institutional Class 1,000.00 1,000.00 1,012.80 1,022.14 2.81 2.82 0.56
Institutional 3 Class 1,000.00 1,000.00 1,013.30 1,022.69 2.26 2.27 0.45
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Floating Rate Notes 0.6%
Issue Description Effective
Yield
  Principal
Amount ($)
Value ($)
Variable Rate Demand Notes 0.6%
New York City Water & Sewer System(a),(b)
Revenue Bonds
2nd General Resolution
Series 2013 (JPMorgan Chase Bank)
06/15/2050 0.020%   700,000 700,000
Total Floating Rate Notes
(Cost $700,000)
700,000
Municipal Bonds 97.5%
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Airport 0.5%
Charleston County Airport District
Revenue Bonds
Series 2019
07/01/2035 5.000%   500,000 636,840
Charter Schools 1.4%
South Carolina Jobs-Economic Development Authority(c)
Revenue Bonds
Series 2015A
08/15/2035 5.125%   1,000,000 1,076,480
South Carolina Jobs-Economic Development Authority
Revenue Bonds
York Preparatory Academy Project
Series 2014A
11/01/2033 7.000%   500,000 559,140
Total 1,635,620
Higher Education 8.2%
Clemson University
Revenue Bonds
Athletic Facility
Series 2014A
05/01/2028 5.000%   1,170,000 1,365,963
Coastal Carolina University
Revenue Bonds
Series 2015
06/01/2024 5.000%   1,500,000 1,704,795
South Carolina Jobs-Economic Development Authority
Refunding Revenue Bonds
Furman University
Series 2015
10/01/2032 5.000%   1,895,000 2,206,311
Revenue Bonds
Wofford College Project
Series 2019
04/01/2037 5.000%   885,000 1,066,983
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
University of South Carolina
Refunding Revenue Bonds
Series 2017B
05/01/2034 5.000%   1,500,000 1,837,320
Revenue Bonds
Moore School of Business Project
Series 2012
05/01/2026 5.000%   1,500,000 1,566,945
Total 9,748,317
Hospital 11.3%
County of Florence
Refunding Revenue Bonds
McLeod Regional Medical Center Project
Series 2014
11/01/2031 5.000%   1,500,000 1,718,175
County of Greenwood
Refunding Revenue Bonds
Self Regional Healthcare
Series 2012B
10/01/2027 5.000%   1,750,000 1,818,005
10/01/2031 5.000%   2,000,000 2,070,480
Lexington County Health Services District, Inc.
Refunding Revenue Bonds
Lexington Medical Center Obligated Group
Series 2017
11/01/2032 4.000%   1,050,000 1,199,237
Revenue Bonds
Lexington Medical Center
Series 2016
11/01/2034 5.000%   1,500,000 1,754,475
South Carolina Jobs-Economic Development Authority
Refunding Revenue Bonds
Prisma Health Obligated Group
Series 2018
05/01/2036 5.000%   2,000,000 2,445,480
Revenue Bonds
McLeod Health Obligation Group
Series 2018
11/01/2033 5.000%   1,000,000 1,224,980
St. Joseph’s Candler Health System, Inc.
Series 2019
07/01/2032 5.000%   1,000,000 1,262,270
Total 13,493,102
Joint Power Authority 3.2%
South Carolina Public Service Authority
Refunding Revenue Bonds
Series 2014B
12/01/2032 5.000%   1,250,000 1,407,350
The accompanying Notes to Financial Statements are an integral part of this statement.
8 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Series 2016A
12/01/2028 5.000%   2,000,000 2,411,620
Total 3,818,970
Local Appropriation 24.4%
Aiken County Consolidated School District
Special Obligation Revenue Bonds
Series 2019
06/01/2033 4.000%   325,000 389,071
Berkeley County School District
Refunding Revenue Bonds
Securing Assets for Education
Series 2015A
12/01/2027 5.000%   1,500,000 1,677,645
Charleston Educational Excellence Finance Corp.
Refunding Revenue Bonds
Charleston County School
Series 2013
12/01/2025 5.000%   2,000,000 2,243,880
Charleston Public Facilities Corp.
Revenue Bonds
Series 2015A
09/01/2029 5.000%   1,000,000 1,183,810
City of North Charleston
Tax Allocation Bonds
Series 2019B
10/01/2027 5.000%   1,000,000 1,263,950
Tax Increment Pledge
Series 2020
10/01/2031 5.000%   300,000 398,730
County of Dorchester
Tax Allocation Bonds
Series 2020
10/01/2036 5.000%   385,000 489,824
County Square Redevelopment Corp.
Revenue Bonds
Greenville County Project
Series 2021
04/01/2029 5.000%   1,160,000 1,519,148
Dorchester County School District No. 2
Refunding Revenue Bonds
Growth Installment Purchase
Series 2013
12/01/2027 5.000%   1,000,000 1,118,150
Fort Mill School Facilities Corp.
Refunding Revenue Bonds
Fort Mills School District #4
Series 2015
12/01/2028 5.000%   1,000,000 1,168,140
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Kershaw County School District
Refunding Revenue Bonds
Series 2015
12/01/2025 5.000%   1,000,000 1,198,450
Lexington One School Facilities Corp.
Refunding Revenue Bonds
Lexington County School District
Series 2015
12/01/2026 5.000%   835,000 934,799
Lexington School District No. 2 Educational Facilities Corp.
Refunding Revenue Bonds
Series 2015B
12/01/2026 5.000%   1,815,000 2,130,737
Newberry Investing in Children’s Education
Refunding Revenue Bonds
Newberry County School District
Series 2014
12/01/2029 5.000%   1,500,000 1,716,480
North Charleston Public Facilities Corp.
Revenue Bonds
Series 2012
06/01/2029 5.000%   2,280,000 2,392,564
SCAGO Educational Facilities Corp. for Calhoun School District
Refunding Revenue Bonds
Series 2015 (BAM)
12/01/2026 5.000%   520,000 618,805
SCAGO Educational Facilities Corp. for Cherokee School District No. 1
Refunding Revenue Bonds
Series 2015
12/01/2028 5.000%   1,830,000 2,112,204
SCAGO Educational Facilities Corp. for Colleton School District
Refunding Revenue Bonds
Series 2015
12/01/2027 5.000%   1,295,000 1,507,432
SCAGO Educational Facilities Corp. for Pickens School District
Refunding Revenue Bonds
Series 2015
12/01/2029 5.000%   1,500,000 1,746,210
12/01/2030 5.000%   1,275,000 1,479,357
Sumter Two School Facilities, Inc.
Refunding Revenue Bonds
Sumter County School District No. 2
Series 2016 (BAM)
12/01/2027 5.000%   1,500,000 1,753,605
Total 29,042,991
Local General Obligation 10.0%
Anderson County School District No. 5
Unlimited General Obligation Bonds
South Carolina School District Credit Enhancement Program
Series 2017
03/01/2030 4.000%   1,000,000 1,174,360
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Beaufort County School District
Unlimited General Obligation Bonds
Series 2014B
03/01/2023 5.000%   1,190,000 1,295,362
County of Florence
Unlimited General Obligation Bonds
Series 2021
06/01/2028 5.000%   1,000,000 1,290,320
Georgetown County School District
Unlimited General Obligation Bonds
Series 2020
03/01/2029 5.000%   600,000 764,778
Lexington County School District No. 1
Unlimited General Obligation Bonds
Series 2020C
02/01/2031 4.000%   1,000,000 1,211,380
Unlimited General Obligation Refunding Bonds
Series 2019A (School District Credit Enhancement Program)
02/01/2031 5.000%   1,000,000 1,273,180
Richland County School District No. 2
Unlimited General Obligation Bonds
School District Credit Enhancement Program
Series 2020A
03/01/2029 5.000%   1,000,000 1,313,560
South Carolina Jobs-Economic Development Authority
Refunding Revenue Bonds
Series 2015
04/01/2034 5.000%   940,000 986,972
Spartanburg County School District No. 7
Unlimited General Obligation Bonds
Series 2018-B
03/01/2036 5.000%   1,000,000 1,272,640
Series 2019D
03/01/2037 5.000%   1,000,000 1,268,990
Total 11,851,542
Municipal Power 4.6%
City of Camden Combined Public Utility System
Refunding Revenue Bonds
Series 2020 (AGM)
03/01/2031 4.000%   1,125,000 1,409,591
City of Rock Hill Combined Utility System
Refunding Revenue Bonds
Series 2012A (AGM)
01/01/2023 5.000%   1,560,000 1,609,015
Series 2019A
01/01/2032 5.000%   1,000,000 1,265,640
Revenue Bonds
Series 2016
01/01/2028 5.000%   500,000 597,295
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Easley Combined Utility System
Refunding Revenue Bonds
Easley Combined Utility System
Series 2019 (AGM)
12/01/2033 4.000%   500,000 598,835
Total 5,480,376
Other Utility 1.0%
Patriots Energy Group
Improvement Refunding Revenue Bonds
Gas Systems
Series 2019
06/01/2038 5.000%   1,000,000 1,204,500
Ports 2.1%
South Carolina Ports Authority(d)
Revenue Bonds
Series 2019B
07/01/2033 5.000%   2,000,000 2,514,220
Refunded / Escrowed 4.9%
Anderson Regional Joint Water System
Prerefunded 07/15/22 Revenue Bonds
Series 2012
07/15/2028 5.000%   2,000,000 2,116,960
County of Florence
Prerefunded 10/01/23 Revenue Bonds
Series 2015
10/01/2028 5.000%   1,000,000 1,115,770
Renewable Water Resources
Prerefunded 01/01/22 Refunding Revenue Bonds
Series 2012
01/01/2024 5.000%   555,000 572,927
Prerefunded 01/01/22 Revenue Bonds
Series 2012
01/01/2024 5.000%   445,000 459,374
South Carolina Jobs-Economic Development Authority
Prerefunded 11/01/22 Revenue Bonds
Bon Secours Health System, Inc.
Series 2013
11/01/2024 5.000%   450,000 482,436
Town of Hilton Head Island
Prerefunded 06/01/21 Revenue Bonds
Series 2011A
06/01/2023 5.000%   555,000 557,042
06/01/2024 5.000%   580,000 582,134
Total 5,886,643
 
The accompanying Notes to Financial Statements are an integral part of this statement.
10 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Resource Recovery 3.0%
Three Rivers Solid Waste Authority(e)
Revenue Bonds
Capital Appreciation-Landfill Gas Project
Series 2007
10/01/2024 0.000%   1,835,000 1,776,683
10/01/2025 0.000%   1,835,000 1,747,012
Total 3,523,695
Retirement Communities 1.1%
South Carolina Jobs-Economic Development Authority(c)
Refunding Revenue Bonds
Wesley Commons
Series 2016
10/01/2026 5.000%   655,000 688,628
South Carolina Jobs-Economic Development Authority
Revenue Bonds
Bishop Gadsden Episcopal Retirement Community
Series 2019
04/01/2034 4.000%   605,000 648,179
Total 1,336,807
Special Non Property Tax 5.4%
City of Columbia
Revenue Bonds
Series 2014
02/01/2033 5.000%   1,195,000 1,338,520
City of Florence Accommodations Fee
Revenue Bonds
Series 2015
05/01/2030 4.000%   1,000,000 1,094,950
05/01/2035 5.000%   1,000,000 1,129,050
City of Myrtle Beach
Revenue Bonds
Hospitality Fee
Series 2014B
06/01/2030 5.000%   560,000 627,950
City of Rock Hill
Revenue Bonds
Hospitality Fee Pledge
Series 2013
04/01/2023 5.000%   695,000 757,244
Greenville County Public Facilities Corp.
Refunding Certificate of Participation
Series 2014
04/01/2026 5.000%   890,000 1,010,435
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Town of Hilton Head Island
Revenue Bonds
Beach Preservation Fee Pledge
Series 2017
08/01/2025 5.000%   400,000 475,280
Total 6,433,429
Special Property Tax 1.0%
City of Myrtle Beach
Refunding Tax Allocation Bonds
Myrtle Beach Air Force Base
Series 2016
10/01/2030 5.000%   1,000,000 1,191,660
State General Obligation 4.6%
State of South Carolina
Unlimited General Obligation Bonds
Citadel Military College of South Carolina
Series 2021
04/01/2033 5.000%   1,725,000 2,350,899
04/01/2036 5.000%   1,500,000 2,025,270
Series 2014B
04/01/2025 5.000%   1,000,000 1,137,510
Total 5,513,679
Student Loan 0.4%
South Carolina State Education Assistance Authority
Revenue Bonds
Student Loan
Series 2009I
10/01/2024 5.000%   435,000 435,209
Transportation 1.9%
South Carolina Transportation Infrastructure Bank
Refunding Revenue Bonds
Infrastructure Bank
Series 2015A
10/01/2024 5.000%   2,000,000 2,306,720
Water & Sewer 8.5%
Beaufort-Jasper Water & Sewer Authority
Refunding Revenue Bonds
Series 2016B
03/01/2024 5.000%   1,000,000 1,133,790
Revenue Bonds
Series 2019A
03/01/2035 5.000%   750,000 956,340
City of Charleston Waterworks & Sewer System
Revenue Bonds
Series 2019
01/01/2038 5.000%   1,000,000 1,299,690
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
11

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Columbia Stormwater System
Revenue Bonds
Green Bonds
Series 2018
02/01/2038 5.000%   350,000 433,633
City of Columbia Waterworks & Sewer System
Revenue Bonds
Series 2018
02/01/2035 4.000%   560,000 660,464
City of Spartanburg Water System
Refunding Revenue Bonds
Series 2017B
06/01/2035 4.000%   1,375,000 1,601,682
City of Sumter Waterworks & Sewer System
Refunding Revenue Bonds
Series 2015
12/01/2027 4.000%   400,000 461,640
County of Richland Utility System
Refunding Revenue Bonds
Series 2020
03/01/2031 5.000%   240,000 315,091
03/01/2032 5.000%   215,000 281,188
03/01/2033 5.000%   280,000 364,848
Georgetown County Water & Sewer District
Refunding Revenue Bonds
Series 2015
06/01/2027 4.000%   450,000 506,111
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Spartanburg Sanitation Sewer District
Refunding Revenue Bonds
Series 2014B
03/01/2034 5.000%   1,000,000 1,155,330
Town of Lexington Waterworks & Sewer System
Refunding Revenue Bonds
Series 2017
06/01/2034 4.000%   750,000 889,102
Total 10,058,909
Total Municipal Bonds
(Cost $109,553,139)
116,113,229
    
Money Market Funds 0.9%
  Shares Value ($)
Dreyfus AMT-Free Tax Exempt Cash Management Fund, Institutional Shares, 0.010%(f) 113,758 113,746
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(f) 954,626 954,626
Total Money Market Funds
(Cost $1,068,384)
1,068,372
Total Investments in Securities
(Cost: $111,321,523)
117,881,601
Other Assets & Liabilities, Net   1,171,220
Net Assets 119,052,821
 
Notes to Portfolio of Investments
(a) The Fund is entitled to receive principal and interest from the guarantor after a day or a week’s notice or upon maturity. The maturity date disclosed represents the final maturity.
(b) Represents a variable rate security where the coupon rate adjusts on specified dates (generally daily or weekly) using the prevailing money market rate. The interest rate shown was the current rate as of April 30, 2021.
(c) Represents privately placed and other securities and instruments exempt from Securities and Exchange Commission registration (collectively, private placements), such as Section 4(a)(2) and Rule 144A eligible securities, which are often sold only to qualified institutional buyers. At April 30, 2021, the total value of these securities amounted to $1,765,108, which represents 1.48% of total net assets.
(d) Income from this security may be subject to alternative minimum tax.
(e) Zero coupon bond.
(f) The rate shown is the seven-day current annualized yield at April 30, 2021.
Abbreviation Legend
AGM Assured Guaranty Municipal Corporation
BAM Build America Mutual Assurance Co.
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
The accompanying Notes to Financial Statements are an integral part of this statement.
12 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Fair value measurements  (continued)
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Floating Rate Notes 700,000 700,000
Municipal Bonds 116,113,229 116,113,229
Money Market Funds 1,068,372 1,068,372
Total Investments in Securities 1,068,372 116,813,229 117,881,601
See the Portfolio of Investments for all investment classifications not indicated in the table.
The Fund’s assets assigned to the Level 2 input category are generally valued using the market approach, in which a security’s value is determined through reference to prices and information from market transactions for similar or identical assets.
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
13

Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $111,321,523) $117,881,601
Receivable for:  
Capital shares sold 118,698
Interest 1,423,591
Expense reimbursement due from Investment Manager 451
Prepaid expenses 10,259
Total assets 119,434,600
Liabilities  
Due to custodian 2,130
Payable for:  
Capital shares purchased 30,122
Distributions to shareholders 186,830
Management services fees 1,531
Distribution and/or service fees 290
Transfer agent fees 13,439
Compensation of board members 130,843
Other expenses 16,594
Total liabilities 381,779
Net assets applicable to outstanding capital stock $119,052,821
Represented by  
Paid in capital 113,051,357
Total distributable earnings (loss) 6,001,464
Total - representing net assets applicable to outstanding capital stock $119,052,821
Class A  
Net assets $30,657,425
Shares outstanding 2,944,260
Net asset value per share $10.41
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $10.73
Advisor Class  
Net assets $3,034,082
Shares outstanding 291,454
Net asset value per share $10.41
Class C  
Net assets $2,939,610
Shares outstanding 282,069
Net asset value per share $10.42
Institutional Class  
Net assets $74,821,653
Shares outstanding 7,182,366
Net asset value per share $10.42
Institutional 3 Class  
Net assets $7,600,051
Shares outstanding 727,075
Net asset value per share $10.45
The accompanying Notes to Financial Statements are an integral part of this statement.
14 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $14,526
Interest 3,106,475
Total income 3,121,001
Expenses:  
Management services fees 559,928
Distribution and/or service fees  
Class A 68,996
Class C 40,888
Transfer agent fees  
Class A 33,453
Advisor Class 3,597
Class C 4,927
Institutional Class 93,548
Institutional 3 Class 616
Compensation of board members 62,252
Custodian fees 1,405
Printing and postage fees 14,834
Registration fees 6,794
Audit fees 29,500
Legal fees 9,073
Compensation of chief compliance officer 24
Other 11,744
Total expenses 941,579
Fees waived or expenses reimbursed by Investment Manager and its affiliates (169,890)
Expense reduction (20)
Total net expenses 771,669
Net investment income 2,349,332
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers (26,193)
Net realized loss (26,193)
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers 3,475,775
Net change in unrealized appreciation (depreciation) 3,475,775
Net realized and unrealized gain 3,449,582
Net increase in net assets resulting from operations $5,798,914
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
15

Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $2,349,332 $2,542,642
Net realized loss (26,193) (166,150)
Net change in unrealized appreciation (depreciation) 3,475,775 (760,029)
Net increase in net assets resulting from operations 5,798,914 1,616,463
Distributions to shareholders    
Net investment income and net realized gains    
Class A (498,426) (547,432)
Advisor Class (61,141) (56,833)
Class C (43,686) (95,183)
Institutional Class (1,591,033) (1,836,066)
Institutional 3 Class (155,047) (107,127)
Total distributions to shareholders (2,349,333) (2,642,641)
Increase in net assets from capital stock activity 8,175,212 4,736,181
Total increase in net assets 11,624,793 3,710,003
Net assets at beginning of year 107,428,028 103,718,025
Net assets at end of year $119,052,821 $107,428,028
The accompanying Notes to Financial Statements are an integral part of this statement.
16 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 690,013 7,188,324 499,378 5,166,255
Distributions reinvested 37,936 395,018 41,951 433,746
Redemptions (204,025) (2,124,918) (284,998) (2,932,367)
Net increase 523,924 5,458,424 256,331 2,667,634
Advisor Class        
Subscriptions 78,894 813,886 75,561 782,030
Distributions reinvested 5,852 60,935 5,474 56,585
Redemptions (23,509) (244,594) (33,204) (340,632)
Net increase 61,237 630,227 47,831 497,983
Class C        
Subscriptions 52,882 552,095 61,831 640,505
Distributions reinvested 3,722 38,786 6,986 72,272
Redemptions (273,576) (2,857,515) (421,944) (4,360,019)
Net decrease (216,972) (2,266,634) (353,127) (3,647,242)
Institutional Class        
Subscriptions 1,454,148 15,144,030 2,157,574 22,334,115
Distributions reinvested 35,131 366,026 38,534 398,592
Redemptions (1,214,766) (12,662,886) (2,204,369) (22,741,142)
Net increase (decrease) 274,513 2,847,170 (8,261) (8,435)
Institutional 3 Class        
Subscriptions 278,574 2,920,458 552,912 5,767,081
Distributions reinvested 5,566 58,179 3,937 40,852
Redemptions (140,724) (1,472,612) (56,695) (581,692)
Net increase 143,416 1,506,025 500,154 5,226,241
Total net increase 786,118 8,175,212 442,928 4,736,181
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.09 0.19 0.32 0.51 (0.19) (0.19)
Year Ended 4/30/2020 $10.17 0.22 (0.07) 0.15 (0.23) (0.23)
Year Ended 4/30/2019 $9.94 0.24 0.24 0.48 (0.25) (0.25)
Year Ended 4/30/2018 $10.16 0.25 (0.20) 0.05 (0.27) (0.27)
Year Ended 4/30/2017 $10.55 0.25 (0.35) (0.10) (0.28) (0.01) (0.29)
Advisor Class
Year Ended 4/30/2021 $10.09 0.21 0.32 0.53 (0.21) (0.21)
Year Ended 4/30/2020 $10.16 0.25 (0.06) 0.19 (0.26) (0.26)
Year Ended 4/30/2019 $9.94 0.26 0.24 0.50 (0.28) (0.28)
Year Ended 4/30/2018 $10.15 0.27 (0.19) 0.08 (0.29) (0.29)
Year Ended 4/30/2017 $10.54 0.28 (0.36) (0.08) (0.30) (0.01) (0.31)
Class C
Year Ended 4/30/2021 $10.10 0.11 0.32 0.43 (0.11) (0.11)
Year Ended 4/30/2020 $10.17 0.15 (0.07) 0.08 (0.15) (0.15)
Year Ended 4/30/2019 $9.94 0.16 0.25 0.41 (0.18) (0.18)
Year Ended 4/30/2018 $10.16 0.17 (0.20) (0.03) (0.19) (0.19)
Year Ended 4/30/2017 $10.56 0.18 (0.37) (0.19) (0.20) (0.01) (0.21)
Institutional Class
Year Ended 4/30/2021 $10.09 0.21 0.33 0.54 (0.21) (0.21)
Year Ended 4/30/2020 $10.17 0.25 (0.07) 0.18 (0.26) (0.26)
Year Ended 4/30/2019 $9.94 0.26 0.25 0.51 (0.28) (0.28)
Year Ended 4/30/2018 $10.16 0.27 (0.20) 0.07 (0.29) (0.29)
Year Ended 4/30/2017 $10.56 0.28 (0.37) (0.09) (0.30) (0.01) (0.31)
The accompanying Notes to Financial Statements are an integral part of this statement.
18 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.41 5.05% 0.95% 0.81%(c) 1.80% 10% $30,657
Year Ended 4/30/2020 $10.09 1.46% 0.91% 0.81%(c) 2.15% 9% $24,421
Year Ended 4/30/2019 $10.17 4.93% 0.93% 0.81%(c) 2.37% 9% $21,999
Year Ended 4/30/2018 $9.94 0.43% 0.93% 0.81%(c) 2.41% 7% $23,050
Year Ended 4/30/2017 $10.16 (0.98%) 0.98% 0.81%(c) 2.45% 11% $21,486
Advisor Class
Year Ended 4/30/2021 $10.41 5.31% 0.70% 0.56%(c) 2.05% 10% $3,034
Year Ended 4/30/2020 $10.09 1.82% 0.65% 0.56%(c) 2.40% 9% $2,322
Year Ended 4/30/2019 $10.16 5.09% 0.68% 0.56%(c) 2.62% 9% $1,854
Year Ended 4/30/2018 $9.94 0.78% 0.68% 0.56%(c) 2.66% 7% $1,984
Year Ended 4/30/2017 $10.15 (0.74%) 0.73% 0.56%(c) 2.71% 11% $1,205
Class C
Year Ended 4/30/2021 $10.42 4.26% 1.70% 1.56%(c) 1.07% 10% $2,940
Year Ended 4/30/2020 $10.10 0.80% 1.66% 1.56%(c) 1.41% 9% $5,039
Year Ended 4/30/2019 $10.17 4.14% 1.68% 1.56%(c) 1.62% 9% $8,669
Year Ended 4/30/2018 $9.94 (0.32%) 1.68% 1.56%(c) 1.66% 7% $10,759
Year Ended 4/30/2017 $10.16 (1.81%) 1.73% 1.56%(c) 1.70% 11% $13,698
Institutional Class
Year Ended 4/30/2021 $10.42 5.41% 0.70% 0.56%(c) 2.05% 10% $74,822
Year Ended 4/30/2020 $10.09 1.72% 0.66% 0.56%(c) 2.40% 9% $69,733
Year Ended 4/30/2019 $10.17 5.19% 0.68% 0.56%(c) 2.62% 9% $70,343
Year Ended 4/30/2018 $9.94 0.68% 0.68% 0.56%(c) 2.66% 7% $77,773
Year Ended 4/30/2017 $10.16 (0.83%) 0.73% 0.56%(c) 2.70% 11% $83,743
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
19

Table of Contents
Financial Highlights  (continued)
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Institutional 3 Class
Year Ended 4/30/2021 $10.13 0.23 0.32 0.55 (0.23) (0.23)
Year Ended 4/30/2020 $10.21 0.26 (0.07) 0.19 (0.27) (0.27)
Year Ended 4/30/2019 $9.98 0.27 0.25 0.52 (0.29) (0.29)
Year Ended 4/30/2018 $10.19 0.28 (0.19) 0.09 (0.30) (0.30)
Year Ended 4/30/2017(d) $10.13 0.05 0.06(e) 0.11 (0.05) (0.05)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) The benefits derived from expense reductions had an impact of less than 0.01%.
(d) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(e) Calculation of the net gain (loss) per share (both realized and unrealized) does not correlate to the aggregate realized and unrealized gain (loss) presented in the Statement of Operations due to the timing of subscriptions and redemptions of Fund shares in relation to fluctuations in the market value of the portfolio.
(f) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Institutional 3 Class
Year Ended 4/30/2021 $10.45 5.42% 0.59% 0.45% 2.16% 10% $7,600
Year Ended 4/30/2020 $10.13 1.83% 0.53% 0.45% 2.50% 9% $5,913
Year Ended 4/30/2019 $10.21 5.30% 0.57% 0.45% 2.73% 9% $852
Year Ended 4/30/2018 $9.98 0.91% 0.56% 0.45% 2.79% 7% $747
Year Ended 4/30/2017(d) $10.19 1.09% 0.57%(f) 0.43%(f) 2.85%(f) 11% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
21

Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia South Carolina Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class and Institutional 3 Class shares are available through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Debt securities generally are valued by pricing services approved by the Board of Trustees based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques that take into account, as applicable, factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as approved independent broker-dealer quotes. Debt securities for which quotations are not readily available or not believed to be reflective of market value may also be valued based upon a bid quote from an approved independent broker-dealer. Debt securities maturing in 60 days or less are valued primarily at amortized market value, unless this method results in a valuation that management believes does not approximate fair value.
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 3 Class shares are subject to an annual limitation of not more than 0.02% of the average daily net assets attributable to Institutional 3 Class shares.
24 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.12
Advisor Class 0.12
Class C 0.12
Institutional Class 0.12
Institutional 3 Class 0.01
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, these minimum account balance fees reduced total expenses of the Fund by $20.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 18,745
Class C 1.00(b)
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
25

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  September 1, 2020
through
August 31, 2021
Prior to
September 1, 2020
Class A 0.81% 0.81%
Advisor Class 0.56 0.56
Class C 1.56 1.56
Institutional Class 0.56 0.56
Institutional 3 Class 0.45 0.46
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for deferral/reversal of wash sale losses, trustees’ deferred compensation, distributions and capital loss carryforward. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The Fund did not have any permanent differences; therefore, no reclassifications were made.
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
24 2,349,309 2,349,333 119 2,642,522 2,642,641
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
287,675 (462,834) 6,493,663
26 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
111,387,938 6,642,224 (148,561) 6,493,663
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
The following capital loss carryforwards, determined at April 30, 2021, may be available to reduce future net realized gains on investments, if any, to the extent permitted by the Internal Revenue Code. In addition, for the year ended April 30, 2021, capital loss carryforwards utilized, if any, were as follows:
No expiration
short-term ($)
No expiration
long-term ($)
Total ($) Utilized ($)
(457,314) (5,520) (462,834)
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $20,069,535 and $11,129,417, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
27

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among
28 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Shareholder concentration risk
At April 30, 2021, one unaffiliated shareholder of record owned 50.2% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued and noted no items requiring adjustment of the financial statements or additional disclosure.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
30 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia South Carolina Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia South Carolina Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the custodian and broker. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Exempt-
interest
dividends
 
99.99%  
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
32 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
34 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
36 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
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37

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
38 Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
Columbia South Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Columbia South Carolina Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/
ANN231_04_L01_(06/21)

Annual Report
April 30, 2021
Columbia North Carolina Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia North Carolina Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia North Carolina Intermediate Municipal Bond Fund  |  Annual Report 2021

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Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and North Carolina individual income tax, consistent with moderate fluctuation of principal.
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2016
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 12/14/92 5.45 2.07 2.82
  Including sales charges   2.27 1.46 2.50
Advisor Class* 03/19/13 5.72 2.33 3.07
Class C Excluding sales charges 12/16/92 4.67 1.31 2.04
  Including sales charges   3.67 1.31 2.04
Institutional Class 12/11/92 5.72 2.33 3.07
Institutional 3 Class* 03/01/17 5.79 2.40 3.10
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products /mutual-funds/appended-performance for more information.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia North Carolina Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Quality breakdown (%) (at April 30, 2021)
AAA rating 17.0
AA rating 43.5
A rating 24.4
BBB rating 10.2
Not rated 4.9
Total 100.0
Percentages indicated are based upon total fixed income investments.
Bond ratings apply to the underlying holdings of the Fund and not the Fund itself and are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. The ratings assigned by credit rating agencies are but one of the considerations that the Investment Manager and/or Fund’s subadviser incorporates into its credit analysis process, along with such other issuer-specific factors as cash flows, capital structure and leverage ratios, ability to de-leverage (repay) through free cash flow, quality of management, market positioning and access to capital, as well as such security-specific factors as the terms of the security (e.g., interest rate and time to maturity) and the amount and type of any collateral.
4 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

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Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 5.45% excluding sales charges. The Fund’s Institutional Class shares returned 5.72%. During the same time period, the Fund’s benchmark, the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and then-upcoming U.S. election uncertainty. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). National municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating the continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
Within North Carolina, state economic conditions and revenue collections recovered over the period, driven in large part by an unprecedented level of federal stimulus into the U.S. economy. As of March 30, 2021, the unemployment rate in North Carolina was 5.2%, which was significantly lower than the state’s unemployment rate in April 2020. Further bolstering North Carolina’s economy is that the state is expected to receive $5.28B of direct federal aid, equal to about 11% of its annual budget, from the American Rescue Plan passed in March 2021.
The Fund’s most notable detractors during the period
The North Carolina municipal bond market lagged the broader national market as risk overall was rewarded over the course of the reporting period.
In the intermediate space, North Carolina municipal bonds couldn’t keep pace with similar maturity municipal bonds from other states, weighing on the Fund’s results versus the benchmark, which is national in scope.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Manager Discussion of Fund Performance  (continued)
The Fund’s cash position and exposure to municipal bonds with maturities shorter than the benchmark (less than 2 years) also weighed on Fund results.
Relative to the benchmark, the Fund’s underweight to the transportation sector and overweight to the water & sewer sector, detracted from results.
Security selection in local general obligation bonds and the leasing sector weighed on relative results. This was more a function of the benchmark’s non-North Carolina municipal bonds in these sectors outperforming.
The Fund’s most notable contributors during the period
The Fund’s underweight to municipal bonds rated AAA and overweight to municipal bonds rated BBB, contributed to performance, as higher rated municipal bonds underperformed lower quality municipal bonds during the period.
An underweight in municipal bonds in the 2-5 year maturity range and an overweight in municipal bonds with maturities of 15+ years contributed to the Fund’s performance.
The Fund’s overall duration positioning helped as the Fund was modestly long in duration, as compared to the benchmark, for portions of the period while yields were declining.
Overweight allocations to the hospital and leasing sectors, and an underweight to the special tax segment, benefited Fund results.
The Fund’s exposure to municipal bonds in the non-rated senior living sector (CCRC) aided results.
Security selection within the transportation and education sectors also contributed to results.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling underlying investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to the report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

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Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,013.70 1,020.94 4.02 4.03 0.80
Advisor Class 1,000.00 1,000.00 1,014.90 1,022.19 2.76 2.77 0.55
Class C 1,000.00 1,000.00 1,009.90 1,017.20 7.77 7.80 1.55
Institutional Class 1,000.00 1,000.00 1,014.90 1,022.19 2.76 2.77 0.55
Institutional 3 Class 1,000.00 1,000.00 1,015.30 1,022.54 2.41 2.42 0.48
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Municipal Bonds 97.6%
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Airport 3.2%
City of Charlotte Airport(a)
Revenue Bonds
Charlotte Douglas International
Series 2019
07/01/2035 5.000%   1,195,000 1,509,452
City of Charlotte Airport
Revenue Bonds
Series 2017A
07/01/2028 5.000%   500,000 625,750
Raleigh Durham Airport Authority(a)
Refunding Revenue Bonds
Series 2020A
05/01/2034 5.000%   1,150,000 1,484,018
05/01/2036 5.000%   2,000,000 2,567,800
Total 6,187,020
Forest Products 0.5%
Columbus County Industrial Facilities & Pollution Control Financing Authority
Refunding Revenue Bonds
International Paper Co. Project
Series 2020 (Mandatory Put 06/16/25)
05/01/2034 1.375%   1,000,000 1,026,510
Higher Education 8.3%
Appalachian State University
Refunding Revenue Bonds
Series 2016A
10/01/2026 5.000%   325,000 391,531
Revenue Bonds
Series 2018
05/01/2035 5.000%   1,095,000 1,358,632
East Carolina University
Revenue Bonds
General
Series 2014A
10/01/2031 5.000%   1,900,000 2,096,650
North Carolina Agricultural & Technical State University
Refunding Revenue Bonds
General Purpose
Series 2015A
10/01/2032 5.000%   2,000,000 2,328,560
North Carolina Capital Facilities Finance Agency
Revenue Bonds
Wake Forest University
Series 2018
01/01/2034 5.000%   400,000 492,520
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
North Carolina Central University
Refunding Revenue Bonds
Series 2016
10/01/2029 4.000%   625,000 701,506
Revenue Bonds
Series 2019
04/01/2036 5.000%   500,000 616,435
04/01/2038 5.000%   500,000 613,155
North Carolina State University at Raleigh
Refunding Revenue Bonds
General
Series 2018
10/01/2027 5.000%   300,000 381,336
10/01/2028 5.000%   250,000 325,442
University of North Carolina at Charlotte (The)
Refunding Revenue Bonds
Governors
Series 2020A
10/01/2035 4.000%   200,000 240,696
10/01/2037 4.000%   300,000 358,884
Revenue Bonds
Board of Governors
Series 2017
10/01/2029 5.000%   500,000 623,150
University of North Carolina at Greensboro
Refunding Revenue Bonds
Series 2016
04/01/2029 5.000%   390,000 470,352
04/01/2030 5.000%   250,000 300,990
Revenue Bonds
General
Series 2014
04/01/2032 5.000%   2,000,000 2,250,140
University of North Carolina at Wilmington
Refunding Revenue Bonds
Series 2019B
10/01/2034 5.000%   355,000 459,590
Western Carolina University
Revenue Bonds
General
Series 2018
10/01/2033 5.000%   250,000 309,553
10/01/2034 5.000%   575,000 710,378
Series 2020B
04/01/2033 5.000%   1,000,000 1,308,260
Total 16,337,760
The accompanying Notes to Financial Statements are an integral part of this statement.
8 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Hospital 3.7%
North Carolina Medical Care Commission
Refunding Revenue Bonds
Novant Health Obligation Group
Series 2013
11/01/2024 5.000%   530,000 567,142
Southeastern Regional Medical Center
Series 2012
06/01/2026 5.000%   1,000,000 1,043,280
WakeMed
Series 2012A
10/01/2031 5.000%   2,000,000 2,108,540
Revenue Bonds
CaroMont Health
Series 2021A
02/01/2036 4.000%   500,000 608,975
Rex Healthcare
Series 2015A
07/01/2032 5.000%   1,000,000 1,143,610
Series 2020A
07/01/2035 5.000%   800,000 1,027,800
Wake Forest Baptist Obligation Group
Series 2019
12/01/2033 5.000%   595,000 742,078
Total 7,241,425
Joint Power Authority 4.4%
North Carolina Municipal Power Agency No. 1
Refunding Revenue Bonds
Series 2015A
01/01/2026 5.000%   1,500,000 1,800,015
01/01/2031 5.000%   2,000,000 2,356,840
Series 2016A
01/01/2028 5.000%   1,500,000 1,813,305
Series 2019A
01/01/2032 5.000%   2,000,000 2,591,060
Total 8,561,220
Local Appropriation 18.4%
City of Charlotte
Refunding Certificate of Participation
Series 2019B
06/01/2034 5.000%   2,000,000 2,565,100
City of Durham
Revenue Bonds
Series 2018
04/01/2034 4.000%   1,000,000 1,185,350
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
City of Kannapolis
Revenue Bonds
Series 2014
04/01/2031 5.000%   1,365,000 1,539,515
City of Monroe
Refunding Revenue Bonds
Series 2016
03/01/2035 5.000%   1,000,000 1,189,930
City of Wilmington
Refunding Revenue Bonds
Series 2014A
06/01/2028 5.000%   500,000 568,920
City of Winston-Salem
Refunding Revenue Bonds
Series 2014C
06/01/2029 5.000%   750,000 855,112
County of Brunswick
Revenue Bonds
Series 2015A
06/01/2028 5.000%   250,000 293,608
06/01/2029 5.000%   250,000 293,658
County of Buncombe
Revenue Bonds
Series 2014A
06/01/2032 5.000%   1,635,000 1,855,529
County of Catawba
Revenue Bonds
Series 2011
10/01/2022 5.000%   400,000 407,932
Series 2018
12/01/2036 4.000%   1,940,000 2,310,055
County of Dare
Refunding Revenue Bonds
Series 2016A
06/01/2031 4.000%   225,000 260,003
County of Davidson
Revenue Bonds
Series 2020
06/01/2037 4.000%   400,000 481,012
County of Gaston
Revenue Bonds
Series 2019A
04/01/2034 5.000%   250,000 317,015
04/01/2035 5.000%   300,000 379,707
County of Harnett
Refunding Revenue Bonds
Series 2020
12/01/2027 5.000%   375,000 475,087
Revenue Bonds
Series 2019
10/01/2037 4.000%   955,000 1,128,390
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
County of Henderson
Revenue Bonds
Series 2015
10/01/2030 5.000%   500,000 589,905
Series 2020
06/01/2029 5.000%   525,000 692,265
County of Lee
Revenue Bonds
Series 2018
05/01/2036 4.000%   500,000 590,025
County of Martin
Refunding Revenue Bonds
Water & Sewer District
Series 2014
06/01/2030 4.000%   730,000 797,452
County of Onslow
Revenue Bonds
Series 2015
06/01/2027 4.000%   405,000 459,327
Series 2016
10/01/2028 5.000%   1,000,000 1,219,670
County of Pender
Revenue Bonds
Series 2015
04/01/2027 5.000%   1,165,000 1,364,821
04/01/2028 5.000%   1,290,000 1,507,068
County of Randolph
Refunding Revenue Bonds
Series 2013C
10/01/2026 5.000%   1,500,000 1,851,165
Revenue Bonds
Series 2019B
10/01/2034 5.000%   500,000 644,095
County of Sampson
Refunding Revenue Bonds
Series 2017
09/01/2035 4.000%   1,000,000 1,147,690
County of Surry
Revenue Bonds
Series 2019
06/01/2032 5.000%   275,000 352,294
06/01/2033 5.000%   350,000 446,849
County of Union
Refunding Revenue Bonds
Series 2012
12/01/2024 5.000%   1,715,000 1,999,381
County of Wake
Refunding Revenue Bonds
Series 2018A
08/01/2036 4.000%   2,000,000 2,382,900
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
County of Wilkes
Refunding Revenue Bonds
Series 2015
06/01/2027 5.000%   500,000 591,965
06/01/2029 5.000%   500,000 589,740
Durham Capital Financing Corp.
Revenue Bonds
Series 2018
10/01/2035 4.000%   1,500,000 1,791,750
Orange County Public Facilities Co.
Unrefunded Revenue Bonds
Series 2012
10/01/2024 5.000%   835,000 890,603
Total 36,014,888
Local General Obligation 9.7%
City of Charlotte
Unlimited General Obligation Refunding Bonds
Series 2020A
06/01/2027 5.000%   725,000 916,588
City of Greensboro
Unlimited General Obligation Bonds
Series 2020B
Series 2020B
04/01/2031 5.000%   2,205,000 2,950,334
County of Durham
Unlimited General Obligation Bonds
Series 2019
06/01/2032 5.000%   620,000 807,507
County of Forsyth
Unlimited General Obligation Bonds
Public Improvement
Series 2019B
03/01/2026 5.000%   1,000,000 1,218,840
County of Gaston
Unlimited General Obligation Refunding Bonds
Series 2020
02/01/2028 5.000%   1,500,000 1,919,130
02/01/2029 5.000%   1,500,000 1,957,710
County of Guilford
Unlimited General Obligation Bonds
Public Improvement
Series 2017B
05/01/2026 5.000%   1,000,000 1,224,750
County of Mecklenburg
Unlimited General Obligation Public Improvement Bonds
Series 2016B
12/01/2027 5.000%   1,180,000 1,461,926
County of Moore
Unlimited General Obligation Refunding Bonds
Series 2016
06/01/2028 5.000%   1,000,000 1,289,520
 
The accompanying Notes to Financial Statements are an integral part of this statement.
10 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
County of Pitt
Refunding Revenue Bonds
Series 2017
04/01/2022 5.000%   750,000 783,142
04/01/2024 5.000%   410,000 466,379
County of Wake
Unlimited General Obligation Public Improvement Bonds
Series 2019A
03/01/2033 5.000%   1,500,000 1,937,910
Unlimited General Obligation Refunding Bonds
Series 2010C
03/01/2022 5.000%   2,000,000 2,080,960
Total 19,014,696
Multi-Family 4.1%
North Carolina Capital Facilities Finance Agency
Refunding Revenue Bonds
North Carolina A&T University Foundation Project
Series 2015A
06/01/2028 5.000%   1,000,000 1,163,460
The Arc of North Carolina
Series 2017
10/01/2034 5.000%   1,500,000 1,740,975
University of North Carolina at Wilmington
Refunding Revenue Bonds
Series 2015
06/01/2029 5.000%   2,000,000 2,318,620
Western Carolina University
Limited General Obligation Refunding Revenue Bonds
Student Housing
Series 2016 (AGM)
06/01/2027 5.000%   500,000 600,690
06/01/2028 5.000%   1,000,000 1,194,430
06/01/2029 5.000%   800,000 953,568
Total 7,971,743
Municipal Power 1.4%
City of Fayetteville Public Works Commission
Revenue Bonds
Series 2014
03/01/2027 4.000%   1,250,000 1,372,675
Greenville Utilities Commission
Revenue Bonds
Series 2019
08/01/2032 5.000%   625,000 809,850
08/01/2033 5.000%   400,000 516,532
Total 2,699,057
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Refunded / Escrowed 10.2%
County of Buncombe
Prerefunded 06/01/22 Revenue Bonds
Series 2012
06/01/2028 5.000%   500,000 526,260
06/01/2029 5.000%   1,000,000 1,052,520
County of Johnston
Prerefunded 06/01/24 Revenue Bonds
Series 2014
06/01/2028 5.000%   1,000,000 1,146,070
County of New Hanover
Prerefunded 10/01/27 Revenue Bonds
New Hanover Regional Medical Center
Series 2017
10/01/2030 5.000%   1,200,000 1,513,356
County of Wake
Prerefunded 10/01/26 Revenue Bonds
Series 1993 Escrowed to Maturity (NPFGC)
10/01/2026 5.125%   1,485,000 1,686,678
Jacksonville Public Facilities Corp.
Prerefunded 04/01/22 Limited Obligation Revenue Bonds
Series 2012
04/01/2026 5.000%   1,075,000 1,122,300
North Carolina Eastern Municipal Power Agency
Refunding Revenue Bonds
Series 1993B Escrowed to Maturity (NPFGC / IBC)
01/01/2022 6.000%   3,000,000 3,116,040
North Carolina Medical Care Commission
Prerefunded 06/01/22 Revenue Bonds
Duke University Health System
Series 2012A
06/01/2032 5.000%   3,635,000 3,825,910
Vidant Health
Series 2012A
06/01/2025 5.000%   1,500,000 1,578,780
06/01/2036 5.000%   1,445,000 1,520,891
Prerefunded 06/01/25 Revenue Bonds
Vidant Health
Series 2015
06/01/2030 5.000%   1,000,000 1,185,740
Orange County Public Facilities Co.
Prerefunded 10/01/22 Revenue Bonds
Series 2012
10/01/2024 5.000%   490,000 522,987
University of North Carolina at Charlotte (The)
Prerefunded 04/01/24 Revenue Bonds
Series 2014
04/01/2030 5.000%   1,000,000 1,136,930
Total 19,934,462
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
11

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Retirement Communities 6.4%
North Carolina Medical Care Commission
Refunding Revenue Bonds
1st Mortgage - United Church
Series 2015A
09/01/2030 4.500%   1,000,000 1,021,270
1st Mortgage - United Methodist
Series 2013A
10/01/2033 5.000%   1,595,000 1,691,817
Pennybyrn at Maryfield
Series 2015
10/01/2025 5.000%   750,000 797,580
Retirement Facilities 1st Mortgage
Series 2019
01/01/2039 5.000%   1,000,000 1,119,730
Sharon Towers
Series 2019A
07/01/2033 5.000%   1,000,000 1,133,540
Southminster, Inc.
Series 2016
10/01/2025 5.000%   1,260,000 1,400,805
United Methodist Retirement
Series 2016
10/01/2030 5.000%   700,000 801,332
Revenue Bonds
Pennybyrn at Maryfield Project
Series 2020B-2
10/01/2024 2.500%   745,000 747,987
Presbyterian Homes Obligated Group (The)
Series 2020
10/01/2035 4.000%   650,000 752,265
The Pines at Davidson Project
Series 2019
01/01/2038 5.000%   1,000,000 1,111,010
Twin Lakes Community
Series 2019A
01/01/2038 5.000%   1,750,000 1,984,622
Total 12,561,958
Sales Tax 0.6%
City of Rocky Mount
Revenue Bonds
Series 2016
05/01/2028 5.000%   1,000,000 1,202,700
Single Family 2.4%
North Carolina Housing Finance Agency
Revenue Bonds
Series 2017-38B (GNMA)
07/01/2037 3.850%   1,805,000 1,972,955
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Series 2019-41 (GNMA)
07/01/2034 3.100%   720,000 773,338
Series 2019-42
07/01/2039 2.625%   1,000,000 1,045,850
Series 44
01/01/2027 1.950%   830,000 870,180
Total 4,662,323
State Appropriated 1.2%
State of North Carolina
Refunding Revenue Bonds
Series 2014B
06/01/2025 5.000%   2,000,000 2,372,320
State General Obligation 3.4%
State of North Carolina
Unlimited General Obligation Bonds
Series 2020A
06/01/2029 5.000%   2,000,000 2,648,160
06/01/2030 5.000%   2,000,000 2,701,840
Unlimited General Obligation Refunding Bonds
Series 2016A
06/01/2026 5.000%   1,000,000 1,227,860
Total 6,577,860
Transportation 1.3%
State of North Carolina
Revenue Bonds
Series 2019
03/01/2033 5.000%   1,250,000 1,593,413
Vehicle - GARVEE
Series 2015
03/01/2027 5.000%   900,000 1,045,917
Total 2,639,330
Turnpike / Bridge / Toll Road 4.5%
North Carolina Turnpike Authority
Refunding Revenue Bonds
Senior Lien
Series 2017
01/01/2030 5.000%   1,700,000 2,041,088
01/01/2032 5.000%   1,450,000 1,728,748
Series 2017 (AGM)
01/01/2031 5.000%   750,000 908,475
Revenue Bonds
BAN Series 2020
02/01/2024 5.000%   2,000,000 2,252,480
North Carolina Turnpike Authority(b)
Refunding Revenue Bonds
Series 2016C
07/01/2029 0.000%   750,000 593,063
 
The accompanying Notes to Financial Statements are an integral part of this statement.
12 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Revenue Bonds
Series 2017C
07/01/2030 0.000%   550,000 412,456
07/01/2031 0.000%   1,100,000 781,000
Total 8,717,310
Water & Sewer 13.9%
City of Charlotte Water & Sewer System
Refunding Revenue Bonds
Series 2015
07/01/2024 5.000%   1,010,000 1,161,894
Series 2018
07/01/2035 4.000%   2,000,000 2,393,140
Series 2020
07/01/2036 4.000%   2,000,000 2,479,400
City of Gastonia Combined Utilities System
Revenue Bonds
Series 2015
05/01/2029 5.000%   265,000 308,746
05/01/2030 5.000%   660,000 769,012
City of Greensboro Combined Water & Sewer System
Refunding Revenue Bonds
Series 2006
06/01/2022 5.250%   1,200,000 1,266,372
06/01/2023 5.250%   2,000,000 2,211,540
City of Jacksonville Enterprise System
Refunding Revenue Bonds
Series 2016
05/01/2028 5.250%   250,000 325,017
City of Raleigh Combined Enterprise System
Refunding Revenue Bonds
Series 2015B
12/01/2025 5.000%   1,200,000 1,450,212
City of Thomasville Combined Enterprise System
Refunding Revenue Bonds
Series 2012
05/01/2026 4.000%   860,000 890,238
City of Winston-Salem Water & Sewer System
Refunding Revenue Bonds
Series 2016A
06/01/2024 5.000%   1,300,000 1,489,956
06/01/2033 4.000%   2,165,000 2,503,195
Series 2020A
06/01/2036 4.000%   2,000,000 2,447,140
Revenue Bonds
Series 2017
06/01/2031 4.000%   400,000 471,320
County of Brunswick Enterprise Systems
Refunding Revenue Bonds
Series 2015
04/01/2027 5.000%   1,500,000 1,757,280
Municipal Bonds (continued)
Issue Description Coupon
Rate
  Principal
Amount ($)
Value ($)
Revenue Bonds
Enterprise System
Series 2020
04/01/2033 4.000%   500,000 613,180
County of Dare Utilities System
Refunding Revenue Bonds
Series 2017
02/01/2032 4.000%   300,000 350,226
County of Lincoln Enterprise System
Refunding Revenue Bonds
Series 2020
08/01/2029 5.000%   320,000 420,720
County of Union Enterprise System
Revenue Bonds
Enterprise System
Series 2019
06/01/2031 5.000%   1,000,000 1,295,140
Series 2015
06/01/2029 5.000%   500,000 596,625
Onslow Water & Sewer Authority
Refunding Revenue Bonds
Series 2016
12/01/2031 4.000%   820,000 954,775
Town of Fuquay-Varina Combined Utilities System
Revenue Bonds
Series 2016
04/01/2030 5.000%   335,000 401,002
04/01/2031 5.000%   450,000 538,852
Total 27,094,982
Total Municipal Bonds
(Cost $179,792,813)
190,817,564
    
Money Market Funds 1.4%
  Shares Value ($)
Dreyfus AMT-Free Tax Exempt Cash Management Fund, Institutional Shares, 0.010%(c) 512,801 512,750
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(c) 2,120,394 2,120,394
Total Money Market Funds
(Cost $2,633,195)
2,633,144
Total Investments in Securities
(Cost: $182,426,008)
193,450,708
Other Assets & Liabilities, Net   1,999,705
Net Assets 195,450,413
 
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
13

Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Notes to Portfolio of Investments
(a) Income from this security may be subject to alternative minimum tax.
(b) Zero coupon bond.
(c) The rate shown is the seven-day current annualized yield at April 30, 2021.
Abbreviation Legend
AGM Assured Guaranty Municipal Corporation
BAN Bond Anticipation Note
GNMA Government National Mortgage Association
IBC Insurance Bond Certificate
NPFGC National Public Finance Guarantee Corporation
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Municipal Bonds 190,817,564 190,817,564
Money Market Funds 2,633,144 2,633,144
Total Investments in Securities 2,633,144 190,817,564 193,450,708
See the Portfolio of Investments for all investment classifications not indicated in the table.
The Fund’s assets assigned to the Level 2 input category are generally valued using the market approach, in which a security’s value is determined through reference to prices and information from market transactions for similar or identical assets.
The accompanying Notes to Financial Statements are an integral part of this statement.
14 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $182,426,008) $193,450,708
Cash 642
Receivable for:  
Capital shares sold 282,783
Interest 2,203,124
Expense reimbursement due from Investment Manager 295
Prepaid expenses 10,990
Total assets 195,948,542
Liabilities  
Payable for:  
Capital shares purchased 35,577
Distributions to shareholders 306,535
Management services fees 2,514
Distribution and/or service fees 190
Transfer agent fees 3,256
Compensation of board members 133,564
Other expenses 16,493
Total liabilities 498,129
Net assets applicable to outstanding capital stock $195,450,413
Represented by  
Paid in capital 184,757,526
Total distributable earnings (loss) 10,692,887
Total - representing net assets applicable to outstanding capital stock $195,450,413
Class A  
Net assets $17,634,174
Shares outstanding 1,655,417
Net asset value per share $10.65
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $10.98
Advisor Class  
Net assets $3,396,385
Shares outstanding 319,353
Net asset value per share $10.64
Class C  
Net assets $2,540,724
Shares outstanding 238,575
Net asset value per share $10.65
Institutional Class  
Net assets $26,144,848
Shares outstanding 2,456,739
Net asset value per share $10.64
Institutional 3 Class  
Net assets $145,734,282
Shares outstanding 13,652,799
Net asset value per share $10.67
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
15

Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $5,411
Interest 5,007,878
Total income 5,013,289
Expenses:  
Management services fees 948,029
Distribution and/or service fees  
Class A 45,048
Class C 27,747
Transfer agent fees  
Class A 15,293
Advisor Class 4,164
Class C 2,361
Institutional Class 21,692
Institutional 3 Class 10,191
Compensation of board members 64,181
Custodian fees 1,692
Printing and postage fees 13,987
Registration fees 14,032
Audit fees 29,500
Legal fees 9,808
Compensation of chief compliance officer 41
Other 13,271
Total expenses 1,221,037
Fees waived or expenses reimbursed by Investment Manager and its affiliates (143,028)
Total net expenses 1,078,009
Net investment income 3,935,280
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 106,564
Net realized gain 106,564
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers 6,945,335
Net change in unrealized appreciation (depreciation) 6,945,335
Net realized and unrealized gain 7,051,899
Net increase in net assets resulting from operations $10,987,179
The accompanying Notes to Financial Statements are an integral part of this statement.
16 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $3,935,280 $4,219,556
Net realized gain 106,564 12,145
Net change in unrealized appreciation (depreciation) 6,945,335 (1,750,607)
Net increase in net assets resulting from operations 10,987,179 2,481,094
Distributions to shareholders    
Net investment income and net realized gains    
Class A (302,590) (346,307)
Advisor Class (94,853) (120,443)
Class C (25,935) (44,538)
Institutional Class (492,975) (538,584)
Institutional 3 Class (3,018,926) (3,169,684)
Total distributions to shareholders (3,935,279) (4,219,556)
Increase (decrease) in net assets from capital stock activity (1,925,637) 22,545,674
Total increase in net assets 5,126,263 20,807,212
Net assets at beginning of year 190,324,150 169,516,938
Net assets at end of year $195,450,413 $190,324,150
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 204,825 2,178,359 231,609 2,434,674
Distributions reinvested 23,288 247,759 26,913 282,955
Redemptions (244,823) (2,598,491) (179,902) (1,879,023)
Net increase (decrease) (16,710) (172,373) 78,620 838,606
Advisor Class        
Subscriptions 36,252 384,707 106,117 1,108,584
Distributions reinvested 8,912 94,659 11,449 120,217
Redemptions (206,290) (2,184,762) (170,461) (1,788,005)
Net decrease (161,126) (1,705,396) (52,895) (559,204)
Class C        
Subscriptions 63,221 669,934 39,046 405,324
Distributions reinvested 2,088 22,197 3,446 36,217
Redemptions (125,733) (1,339,410) (139,939) (1,461,158)
Net decrease (60,424) (647,279) (97,447) (1,019,617)
Institutional Class        
Subscriptions 478,877 5,072,731 338,485 3,564,792
Distributions reinvested 38,564 409,788 44,280 465,058
Redemptions (370,338) (3,931,885) (290,871) (3,041,926)
Net increase 147,103 1,550,634 91,894 987,924
Institutional 3 Class        
Subscriptions 2,926,315 31,149,543 3,716,277 39,209,742
Distributions reinvested 5,308 56,575 7,323 77,188
Redemptions (3,021,505) (32,157,341) (1,621,857) (16,988,965)
Net increase (decrease) (89,882) (951,223) 2,101,743 22,297,965
Total net increase (decrease) (181,039) (1,925,637) 2,121,915 22,545,674
The accompanying Notes to Financial Statements are an integral part of this statement.
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Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
19

Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.27 0.18 0.38 0.56 (0.18) (0.18)
Year Ended 4/30/2020 $10.33 0.21 (0.06) 0.15 (0.21) (0.21)
Year Ended 4/30/2019 $10.14 0.24 0.19 0.43 (0.24) (0.24)
Year Ended 4/30/2018 $10.33 0.24 (0.19) 0.05 (0.24) (0.24)
Year Ended 4/30/2017 $10.70 0.25 (0.37) (0.12) (0.25) (0.25)
Advisor Class
Year Ended 4/30/2021 $10.26 0.20 0.38 0.58 (0.20) (0.20)
Year Ended 4/30/2020 $10.32 0.24 (0.06) 0.18 (0.24) (0.24)
Year Ended 4/30/2019 $10.12 0.26 0.20 0.46 (0.26) (0.26)
Year Ended 4/30/2018 $10.32 0.27 (0.20) 0.07 (0.27) (0.27)
Year Ended 4/30/2017 $10.69 0.28 (0.37) (0.09) (0.28) (0.28)
Class C
Year Ended 4/30/2021 $10.27 0.10 0.38 0.48 (0.10) (0.10)
Year Ended 4/30/2020 $10.33 0.13 (0.06) 0.07 (0.13) (0.13)
Year Ended 4/30/2019 $10.13 0.16 0.20 0.36 (0.16) (0.16)
Year Ended 4/30/2018 $10.33 0.16 (0.20) (0.04) (0.16) (0.16)
Year Ended 4/30/2017 $10.70 0.17 (0.37) (0.20) (0.17) (0.17)
Institutional Class
Year Ended 4/30/2021 $10.26 0.20 0.38 0.58 (0.20) (0.20)
Year Ended 4/30/2020 $10.32 0.24 (0.06) 0.18 (0.24) (0.24)
Year Ended 4/30/2019 $10.13 0.26 0.19 0.45 (0.26) (0.26)
Year Ended 4/30/2018 $10.32 0.27 (0.19) 0.08 (0.27) (0.27)
Year Ended 4/30/2017 $10.69 0.28 (0.37) (0.09) (0.28) (0.28)
Institutional 3 Class
Year Ended 4/30/2021 $10.29 0.21 0.38 0.59 (0.21) (0.21)
Year Ended 4/30/2020 $10.36 0.25 (0.07) 0.18 (0.25) (0.25)
Year Ended 4/30/2019 $10.16 0.27 0.20 0.47 (0.27) (0.27)
Year Ended 4/30/2018 $10.35 0.28 (0.19) 0.09 (0.28) (0.28)
Year Ended 4/30/2017(d) $10.28 0.05 0.07(e) 0.12 (0.05) (0.05)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) Ratios include line of credit interest expense which is less than 0.01%.
(d) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(e) Calculation of the net gain (loss) per share (both realized and unrealized) does not correlate to the aggregate realized and unrealized gain (loss) presented in the Statement of Operations due to the timing of subscriptions and redemptions of Fund shares in relation to fluctuations in the market value of the portfolio.
(f) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
20 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.65 5.45% 0.88% 0.81% 1.68% 15% $17,634
Year Ended 4/30/2020 $10.27 1.43% 0.85% 0.81% 2.01% 7% $17,176
Year Ended 4/30/2019 $10.33 4.26% 0.87%(c) 0.81%(c) 2.32% 23% $16,469
Year Ended 4/30/2018 $10.14 0.48% 0.88% 0.81% 2.33% 10% $18,035
Year Ended 4/30/2017 $10.33 (1.11%) 0.96% 0.81% 2.39% 12% $18,246
Advisor Class
Year Ended 4/30/2021 $10.64 5.72% 0.63% 0.56% 1.93% 15% $3,396
Year Ended 4/30/2020 $10.26 1.69% 0.60% 0.56% 2.26% 7% $4,928
Year Ended 4/30/2019 $10.32 4.62% 0.62%(c) 0.56%(c) 2.57% 23% $5,505
Year Ended 4/30/2018 $10.12 0.63% 0.63% 0.56% 2.57% 10% $4,589
Year Ended 4/30/2017 $10.32 (0.86%) 0.71% 0.56% 2.64% 12% $2,236
Class C
Year Ended 4/30/2021 $10.65 4.67% 1.62% 1.55% 0.93% 15% $2,541
Year Ended 4/30/2020 $10.27 0.68% 1.60% 1.56% 1.26% 7% $3,070
Year Ended 4/30/2019 $10.33 3.58% 1.62%(c) 1.56%(c) 1.57% 23% $4,096
Year Ended 4/30/2018 $10.13 (0.38%) 1.63% 1.56% 1.58% 10% $5,338
Year Ended 4/30/2017 $10.33 (1.85%) 1.71% 1.56% 1.65% 12% $6,682
Institutional Class
Year Ended 4/30/2021 $10.64 5.72% 0.63% 0.56% 1.93% 15% $26,145
Year Ended 4/30/2020 $10.26 1.69% 0.60% 0.56% 2.26% 7% $23,700
Year Ended 4/30/2019 $10.32 4.52% 0.62%(c) 0.56%(c) 2.57% 23% $22,897
Year Ended 4/30/2018 $10.13 0.72% 0.65% 0.56% 2.55% 10% $22,984
Year Ended 4/30/2017 $10.32 (0.86%) 0.71% 0.56% 2.65% 12% $158,327
Institutional 3 Class
Year Ended 4/30/2021 $10.67 5.79% 0.55% 0.48% 2.00% 15% $145,734
Year Ended 4/30/2020 $10.29 1.67% 0.52% 0.48% 2.34% 7% $141,450
Year Ended 4/30/2019 $10.36 4.70% 0.53%(c) 0.48%(c) 2.65% 23% $120,551
Year Ended 4/30/2018 $10.16 0.83% 0.54% 0.48% 2.68% 10% $117,741
Year Ended 4/30/2017(d) $10.35 1.15% 0.55%(f) 0.42%(f) 2.87%(f) 12% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
21

Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia North Carolina Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class and Institutional 3 Class shares are available through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Debt securities generally are valued by pricing services approved by the Board of Trustees based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques that take into account, as applicable, factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as approved independent broker-dealer quotes. Debt securities for which quotations are not readily available or not believed to be reflective of market value may also be valued based upon a bid quote from an approved independent broker-dealer. Debt securities maturing in 60 days or less are valued primarily at amortized market value, unless this method results in a valuation that management believes does not approximate fair value.
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
23

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 3 Class shares are subject to an annual limitation of not more than 0.02% of the average daily net assets attributable to Institutional 3 Class shares.
24 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.08
Advisor Class 0.08
Class C 0.08
Institutional Class 0.08
Institutional 3 Class 0.01
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, no minimum account balance fees were charged by the Fund.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 10,589
Class C 1.00(b) 7
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
25

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  Fee rate(s) contractual
through
August 31, 2021
Class A 0.81%
Advisor Class 0.56
Class C 1.56
Institutional Class 0.56
Institutional 3 Class 0.48
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. In addition to the contractual agreement, the Investment Manager and certain of its affiliates have voluntarily agreed to waive fees and/or reimburse Fund expenses (excluding certain fees and expenses described above) so that Fund level expenses (expenses directly attributable to the Fund and not to a specific share class) are waived proportionately across all share classes. This arrangement may be revised or discontinued at any time. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, distributions, principal and/or interest of fixed income securities, capital loss carryforward and re-characterization of distributions for investments. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
Undistributed net
investment
income ($)
Accumulated
net realized
(loss) ($)
Paid in
capital ($)
(1) 1
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
581 3,934,698 3,935,279 2,596 4,216,960 4,219,556
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
1,153,876 (1,068,466) 11,046,895
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
182,403,813 11,099,721 (52,826) 11,046,895
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
The following capital loss carryforwards, determined at April 30, 2021, may be available to reduce future net realized gains on investments, if any, to the extent permitted by the Internal Revenue Code. In addition, for the year ended April 30, 2021, capital loss carryforwards utilized, if any, were as follows:
No expiration
short-term ($)
No expiration
long-term ($)
Total ($) Utilized ($)
(528,605) (539,861) (1,068,466) 106,565
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $30,636,127 and $29,514,295, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
27

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
29

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
Shareholder concentration risk
At April 30, 2021, two unaffiliated shareholders of record owned 87.5% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued and noted no items requiring adjustment of the financial statements or additional disclosure.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
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Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia North Carolina Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia North Carolina Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the custodian and broker. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
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31

Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Exempt-
interest
dividends
 
99.99%  
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
32 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
34 Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
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Table of Contents
 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
Columbia North Carolina Intermediate Municipal Bond Fund  | Annual Report 2021
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Columbia North Carolina Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/
ANN206_04_L01_(06/21)

Annual Report
April 30, 2021
Columbia Maryland Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia Maryland Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia Maryland Intermediate Municipal Bond Fund  |  Annual Report 2021

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Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and Maryland individual income tax, consistent with moderate fluctuation of principal.
The Board of Trustees of the Fund has approved a Plan of Liquidation and Termination (the Plan). Under the terms of the Plan, it is anticipated that the Fund was liquidated on or about May 7, 2021 (the Liquidation Date).
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2016
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 09/01/90 5.35 2.25 2.90
  Including sales charges   2.19 1.62 2.58
Advisor Class* 03/19/13 5.61 2.52 3.12
Class C Excluding sales charges 06/17/92 4.56 1.50 2.14
  Including sales charges   3.56 1.50 2.14
Institutional Class 09/01/90 5.62 2.50 3.15
Institutional 3 Class* 03/01/17 5.70 2.56 3.06
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products /mutual-funds/appended-performance for more information.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021
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Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia Maryland Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Portfolio breakdown (%) (at April 30, 2021)
Money Market Funds 100.0
Total 100.0
Percentages indicated are based upon total investments excluding investments in derivatives, if any. The Fund’s portfolio composition is subject to change.
4 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

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Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 5.35% excluding sales charges. The Fund’s Institutional Class shares returned 5.62%. During the same time period, the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). National municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating the continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
Within Maryland, economic conditions and revenue collections recovered over the period, driven in large part by an unprecedented level of federal stimulus into the U.S. economy. At March 30, 2021, Maryland’s unemployment rate was 6.2%, significantly lower than the state’s unemployment rate as of April 2020. Further, the state is expected to receive $3.87B of direct federal aid, equal to about 9% of its annual budget, from the American Rescue Plan passed in March 2021.
The Fund’s most notable detractors during the period
The Fund’s duration positioning was a detractor during the period. The Fund’s duration was below that of the benchmark for most of the period due to very little new issuance and availability of secondary offerings in Maryland municipal bonds.
The few secondary offerings that were available in Maryland were priced at levels that made them very unattractive in our view.
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Manager Discussion of Fund Performance  (continued)
Further exacerbating the challenge of sourcing Maryland bonds was the profile of the limited new issuances during the period. Negotiated and competitive issued deals rarely offered the opportunity to buy longer intermediate positions. Deals tended to come with shorter maturities and/or very low coupons, such as 3% and 2%. We did not find these structures to be appealing opportunities for the Fund’s portfolio.
The lowest returning areas during the period were municipal bonds that were rated AAA, pre-refunded or with maturities within two years.
The Fund was underweight, relative to its benchmark, in all of these areas.
There was overlap between these areas as the Fund’s pre-refunded holdings were rated AAA and had an average maturity of 2.4 years.
These holdings were of the highest quality, had low yields and contributed very little to total return.
The Fund’s most notable contributors during the period
The Fund’s exposure to lower investment-grade (A rated) municipal bonds was the biggest positive contributor as lower rated municipal bonds outperformed higher quality municipal bonds during the period.
Within this broader lower investment-grade quality segment, the hospital, water & sewer and transportation sectors were positive contributors to performance as each outperformed for the period.
Lower coupon bonds were a bright spot during the period with 4% coupon bonds outperforming the historically more common 5% coupon structure.
As we began the process of liquidating the Fund toward the end of the period, demand for Maryland municipal bonds was extremely high. Trading activity related to this liquidation process therefore benefited the Fund’s returns, as prices received for Fund holdings were very favorable.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling underlying investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to the report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

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Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,019.60 1,020.89 4.08 4.08 0.81
Advisor Class 1,000.00 1,000.00 1,020.90 1,022.14 2.82 2.82 0.56
Class C 1,000.00 1,000.00 1,015.80 1,017.15 7.84 7.85 1.56
Institutional Class 1,000.00 1,000.00 1,020.90 1,022.14 2.82 2.82 0.56
Institutional 3 Class 1,000.00 1,000.00 1,021.30 1,022.59 2.37 2.37 0.47
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
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Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Money Market Funds 100.9%
  Shares Value ($)
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(a) 34,261,545 34,279,093
Total Money Market Funds
(Cost $34,279,093)
34,279,093
Total Investments in Securities
(Cost: $34,279,093)
34,279,093
Other Assets & Liabilities, Net   (321,846)
Net Assets 33,957,247
Notes to Portfolio of Investments
(a) The rate shown is the seven-day current annualized yield at April 30, 2021.
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Fair value measurements  (continued)
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Money Market Funds 34,279,093 34,279,093
Total Investments in Securities 34,279,093 34,279,093
See the Portfolio of Investments for all investment classifications not indicated in the table.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $34,279,093) $34,279,093
Receivable for:  
Capital shares sold 23,837
Expense reimbursement due from Investment Manager 312
Total assets 34,303,242
Liabilities  
Payable for:  
Capital shares purchased 141,941
Distributions to shareholders 57,041
Management services fees 442
Distribution and/or service fees 99
Transfer agent fees 1,883
Compensation of board members 128,883
Other expenses 15,706
Total liabilities 345,995
Net assets applicable to outstanding capital stock $33,957,247
Represented by  
Paid in capital 31,097,483
Total distributable earnings (loss) 2,859,764
Total - representing net assets applicable to outstanding capital stock $33,957,247
Class A  
Net assets $9,558,474
Shares outstanding 896,447
Net asset value per share $10.66
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $10.99
Advisor Class  
Net assets $1,163,449
Shares outstanding 109,060
Net asset value per share $10.67
Class C  
Net assets $1,115,307
Shares outstanding 104,552
Net asset value per share $10.67
Institutional Class  
Net assets $5,801,037
Shares outstanding 544,183
Net asset value per share $10.66
Institutional 3 Class  
Net assets $16,318,980
Shares outstanding 1,525,687
Net asset value per share $10.70
The accompanying Notes to Financial Statements are an integral part of this statement.
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Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $1,305
Interest 1,288,454
Total income 1,289,759
Expenses:  
Management services fees 216,643
Distribution and/or service fees  
Class A 29,308
Class C 15,930
Transfer agent fees  
Class A 12,051
Advisor Class 1,221
Class C 1,633
Institutional Class 7,551
Institutional 3 Class 1,715
Compensation of board members 60,346
Custodian fees 1,075
Printing and postage fees 13,619
Registration fees 16,789
Audit fees 29,500
Legal fees 8,438
Interest on interfund lending 27
Compensation of chief compliance officer 9
Other 9,243
Total expenses 425,098
Fees waived or expenses reimbursed by Investment Manager and its affiliates (142,428)
Expense reduction (20)
Total net expenses 282,650
Net investment income 1,007,109
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 2,760,657
Net realized gain 2,760,657
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers (1,196,673)
Net change in unrealized appreciation (depreciation) (1,196,673)
Net realized and unrealized gain 1,563,984
Net increase in net assets resulting from operations $2,571,093
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $1,007,109 $1,301,008
Net realized gain 2,760,657 174,925
Net change in unrealized appreciation (depreciation) (1,196,673) (817,014)
Net increase in net assets resulting from operations 2,571,093 658,919
Distributions to shareholders    
Net investment income and net realized gains    
Class A (256,343) (289,199)
Advisor Class (28,881) (23,107)
Class C (23,039) (27,009)
Institutional Class (178,497) (207,095)
Institutional 3 Class (617,401) (754,598)
Total distributions to shareholders (1,104,161) (1,301,008)
Decrease in net assets from capital stock activity (16,051,317) (105,143)
Total decrease in net assets (14,584,385) (747,232)
Net assets at beginning of year 48,541,632 49,288,864
Net assets at end of year $33,957,247 $48,541,632
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 71,544 761,697 146,952 1,563,187
Distributions reinvested 12,540 133,234 13,926 147,757
Redemptions (337,719) (3,593,209) (155,005) (1,644,938)
Net increase (decrease) (253,635) (2,698,278) 5,873 66,006
Advisor Class        
Subscriptions 17,734 188,550 54,890 580,892
Distributions reinvested 2,694 28,641 2,153 22,848
Redemptions (23,101) (245,303) (16,080) (170,737)
Net increase (decrease) (2,673) (28,112) 40,963 433,003
Class C        
Subscriptions 1,263 13,321 67,811 720,493
Distributions reinvested 2,067 21,977 2,115 22,453
Redemptions (75,588) (804,073) (40,234) (430,318)
Net increase (decrease) (72,258) (768,775) 29,692 312,628
Institutional Class        
Subscriptions 65,435 696,273 140,089 1,485,111
Distributions reinvested 12,914 137,173 15,596 165,487
Redemptions (255,378) (2,714,556) (159,889) (1,679,723)
Net decrease (177,029) (1,881,110) (4,204) (29,125)
Institutional 3 Class        
Subscriptions 416,111 4,433,758 567,947 6,056,950
Distributions reinvested 1,922 20,508 1,229 13,085
Redemptions (1,417,514) (15,129,308) (657,508) (6,957,690)
Net decrease (999,481) (10,675,042) (88,332) (887,655)
Total net decrease (1,505,076) (16,051,317) (16,008) (105,143)
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.34 0.21 0.34 0.55 (0.21) (0.02) (0.23)
Year Ended 4/30/2020 $10.47 0.25 (0.13) 0.12 (0.25) (0.25)
Year Ended 4/30/2019 $10.36 0.28 0.17 0.45 (0.28) (0.06) (0.34)
Year Ended 4/30/2018 $10.61 0.27 (0.20) 0.07 (0.27) (0.05) (0.32)
Year Ended 4/30/2017 $10.90 0.27 (0.29) (0.02) (0.27) (0.27)
Advisor Class
Year Ended 4/30/2021 $10.35 0.24 0.34 0.58 (0.24) (0.02) (0.26)
Year Ended 4/30/2020 $10.47 0.28 (0.12) 0.16 (0.28) (0.28)
Year Ended 4/30/2019 $10.36 0.30 0.18 0.48 (0.31) (0.06) (0.37)
Year Ended 4/30/2018 $10.61 0.30 (0.20) 0.10 (0.30) (0.05) (0.35)
Year Ended 4/30/2017 $10.90 0.30 (0.29) 0.01 (0.30) (0.30)
Class C
Year Ended 4/30/2021 $10.35 0.13 0.34 0.47 (0.13) (0.02) (0.15)
Year Ended 4/30/2020 $10.47 0.17 (0.12) 0.05 (0.17) (0.17)
Year Ended 4/30/2019 $10.36 0.20 0.17 0.37 (0.20) (0.06) (0.26)
Year Ended 4/30/2018 $10.61 0.19 (0.20) (0.01) (0.19) (0.05) (0.24)
Year Ended 4/30/2017 $10.90 0.19 (0.29) (0.10) (0.19) (0.19)
Institutional Class
Year Ended 4/30/2021 $10.34 0.24 0.34 0.58 (0.24) (0.02) (0.26)
Year Ended 4/30/2020 $10.46 0.28 (0.12) 0.16 (0.28) (0.28)
Year Ended 4/30/2019 $10.36 0.30 0.16 0.46 (0.30) (0.06) (0.36)
Year Ended 4/30/2018 $10.61 0.30 (0.20) 0.10 (0.30) (0.05) (0.35)
Year Ended 4/30/2017 $10.90 0.29 (0.28) 0.01 (0.30) (0.30)
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.66 5.35% 1.13%(c) 0.81%(c),(d) 1.98% 9% $9,558
Year Ended 4/30/2020 $10.34 1.11% 0.96% 0.81%(d) 2.36% 15% $11,896
Year Ended 4/30/2019 $10.47 4.42% 0.98%(c) 0.79%(c),(d) 2.67% 4% $11,976
Year Ended 4/30/2018 $10.36 0.65% 0.98% 0.79%(d) 2.55% 9% $13,494
Year Ended 4/30/2017 $10.61 (0.19%) 1.01% 0.81% 2.50% 20% $15,125
Advisor Class
Year Ended 4/30/2021 $10.67 5.61% 0.88%(c) 0.56%(c),(d) 2.22% 9% $1,163
Year Ended 4/30/2020 $10.35 1.46% 0.70% 0.56%(d) 2.60% 15% $1,156
Year Ended 4/30/2019 $10.47 4.68% 0.73%(c) 0.55%(c),(d) 2.94% 4% $741
Year Ended 4/30/2018 $10.36 0.90% 0.72% 0.54%(d) 2.79% 9% $274
Year Ended 4/30/2017 $10.61 0.07% 0.72% 0.54% 2.87% 20% $86
Class C
Year Ended 4/30/2021 $10.67 4.56% 1.87%(c) 1.56%(c),(d) 1.24% 9% $1,115
Year Ended 4/30/2020 $10.35 0.45% 1.71% 1.56%(d) 1.60% 15% $1,830
Year Ended 4/30/2019 $10.47 3.64% 1.73%(c) 1.54%(c),(d) 1.91% 4% $1,540
Year Ended 4/30/2018 $10.36 (0.10%) 1.73% 1.54%(d) 1.80% 9% $2,497
Year Ended 4/30/2017 $10.61 (0.93%) 1.76% 1.56% 1.76% 20% $2,807
Institutional Class
Year Ended 4/30/2021 $10.66 5.62% 0.88%(c) 0.56%(c),(d) 2.22% 9% $5,801
Year Ended 4/30/2020 $10.34 1.46% 0.71% 0.56%(d) 2.60% 15% $7,458
Year Ended 4/30/2019 $10.46 4.58% 0.73%(c) 0.54%(c),(d) 2.92% 4% $7,591
Year Ended 4/30/2018 $10.36 0.89% 0.74% 0.55%(d) 2.76% 9% $7,148
Year Ended 4/30/2017 $10.61 0.06% 0.76% 0.56% 2.75% 20% $57,704
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Institutional 3 Class
Year Ended 4/30/2021 $10.38 0.25 0.34 0.59 (0.25) (0.02) (0.27)
Year Ended 4/30/2020 $10.50 0.29 (0.12) 0.17 (0.29) (0.29)
Year Ended 4/30/2019 $10.39 0.31 0.18 0.49 (0.32) (0.06) (0.38)
Year Ended 4/30/2018 $10.64 0.31 (0.20) 0.11 (0.31) (0.05) (0.36)
Year Ended 4/30/2017(e) $10.55 0.05 0.09(f) 0.14 (0.05) (0.05)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) Ratios include interfund lending expense which is less than 0.01%.
(d) The benefits derived from expense reductions had an impact of less than 0.01%.
(e) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(f) Calculation of the net gain (loss) per share (both realized and unrealized) does not correlate to the aggregate realized and unrealized gain (loss) presented in the Statement of Operations due to the timing of subscriptions and redemptions of Fund shares in relation to fluctuations in the market value of the portfolio.
(g) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Institutional 3 Class
Year Ended 4/30/2021 $10.70 5.70% 0.77%(c) 0.47%(c) 2.33% 9% $16,319
Year Ended 4/30/2020 $10.38 1.56% 0.62% 0.46% 2.70% 15% $26,202
Year Ended 4/30/2019 $10.50 4.78% 0.63%(c) 0.44%(c) 3.01% 4% $27,441
Year Ended 4/30/2018 $10.39 1.02% 0.62% 0.43% 2.93% 9% $39,116
Year Ended 4/30/2017(e) $10.64 1.35% 0.58%(g) 0.42%(g) 3.05%(g) 20% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021
17

Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia Maryland Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a non-diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class and Institutional 3 Class shares are available through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
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19

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 3 Class shares are subject to an annual limitation of not more than 0.02% of the average daily net assets attributable to Institutional 3 Class shares.
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.10
Advisor Class 0.10
Class C 0.10
Institutional Class 0.10
Institutional 3 Class 0.01
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, these minimum account balance fees reduced total expenses of the Fund by $20.
20 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 11,056
Class C 1.00(b)
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  Fee rate(s) contractual
through
August 31, 2021
Class A 0.81%
Advisor Class 0.56
Class C 1.56
Institutional Class 0.56
Institutional 3 Class 0.47
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
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21

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, distributions, distribution reclassifications and earnings and profits distributed to shareholders on the redemption of shares. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
Undistributed net
investment
income ($)
Accumulated
net realized
gain ($)
Paid in
capital ($)
(122,266) 702 121,564
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
20 1,009,909 94,232 1,104,161 102 1,300,906 1,301,008
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
100,296 285,023 2,660,369
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
34,279,093
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $3,732,655 and $52,128,823, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
The Fund’s activity in the Interfund Program during the year ended April 30, 2021 was as follows:
Borrower or lender Average loan
balance ($)
Weighted average
interest rate (%)
Number of days
with outstanding loans
Borrower 1,400,000 0.70 1
Interest expense incurred by the Fund is recorded as Interfund lending in the Statement of Operations. The Fund had no outstanding interfund loans at April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance
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23

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
24 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
Money market fund investment risk
An investment in a money market fund is not a bank deposit and is not insured or guaranteed by any bank, the FDIC or any other government agency. Certain money market funds float their net asset value while others seek to preserve the value of investments at a stable net asset value (typically, $1.00 per share). An investment in a money market fund, even an investment in a fund seeking to maintain a stable net asset value per share, is not guaranteed and it is possible for the Fund to lose money by investing in these and other types of money market funds. If the liquidity of a money market fund’s portfolio deteriorates below certain levels, the money market fund may suspend redemptions (i.e., impose a redemption gate) and thereby prevent the Fund from selling its investment in the money market fund or impose a fee of up to 2% on amounts the Fund redeems from the money market fund (i.e., impose a liquidity fee). These measures may result in an investment loss or prohibit the Fund from redeeming shares when the Investment Manager would otherwise redeem shares. In addition to the fees and expenses that the Fund directly bears, the Fund indirectly bears the fees and expenses of any money market funds in which it invests, including affiliated money market funds. By investing in a money market fund, the Fund will be exposed to the investment risks of the money market fund in direct proportion of such investment. To the extent the Fund invests in instruments such as derivatives, the Fund may hold investments, which may be significant, in money market fund shares to cover its obligations resulting from the Fund’s investments in derivatives. Money market funds and the securities they invest in are subject to comprehensive regulations. The enactment of new legislation or regulations, as well as changes in interpretation and enforcement of current laws, may affect the manner of operation, performance and/or yield of money market funds.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Non-diversification risk
A non-diversified fund is permitted to invest a greater percentage of its total assets in fewer issuers than a diversified fund. This increases the risk that a change in the value of any one investment held by the Fund could affect the overall value of the Fund more than it would affect that of a diversified fund holding a greater number of investments. Accordingly, the Fund’s value will likely be more volatile than the value of a more diversified fund.
Shareholder concentration risk
At April 30, 2021, two unaffiliated shareholders of record owned 75.0% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued. Other than as noted below, there were no items requiring adjustment of the financial statements or additional disclosure.
The Board of Trustees of the Fund has approved a Plan of Liquidation and Termination pursuant to which the Fund was liquidated and terminated. Effective January 11, 2021, the Fund was closed to new investors, and any applicable contingent deferred sales charges were waived on redemptions and exchanges out of the Fund. The Fund liquidated on May 7, 2021, at which time the Fund’s shareholders received a liquidating distribution in an amount equal to the net asset value of their Fund shares.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
26 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia Maryland Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia Maryland Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the broker. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
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27

Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Capital
gain
dividend
Exempt-
interest
dividends
$2,793,387 99.99%
Capital gain dividend. The Fund designates as a capital gain dividend the amount reflected above, or if subsequently determined to be different, the net capital gain of such fiscal period.
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
28 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
30 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
32 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

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TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
34 Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021

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 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
Columbia Maryland Intermediate Municipal Bond Fund  | Annual Report 2021
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Columbia Maryland Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/

Table of Contents
Columbia Maryland Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/

Table of Contents
Columbia Maryland Intermediate Municipal Bond Fund
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.

Annual Report
April 30, 2021
Columbia Georgia Intermediate Municipal Bond Fund
Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semiannual shareholder reports like this one are no longer sent by mail, unless you specifically requested paper copies of the reports. Instead, the reports are made available on the Fund’s website (columbiathreadneedleus.com/investor/), and each time a report is posted you will be notified by mail and provided with a website address to access the report.
If you have already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the Fund electronically at any time by contacting your financial intermediary (such as a broker-dealer or bank) or, for Fund shares held directly with the Fund, by calling 800.345.6611 or by enrolling in “eDelivery” by logging into your account at columbiathreadneedleus.com/investor/.
You may elect to receive all future shareholder reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue receiving paper copies of your shareholder reports. If you invest directly with the Fund, you can call 800.345.6611 to let the Fund know you wish to continue receiving paper copies of your shareholder reports. Your election to receive paper reports will apply to all Columbia Funds held in your account if you invest through a financial intermediary or all Columbia Funds held with the fund complex if you invest directly with the Fund.
Not Federally Insured • No Financial Institution Guarantee • May Lose Value

Table of Contents
If you elect to receive the shareholder report for Columbia Georgia Intermediate Municipal Bond Fund (the Fund) in paper, mailed to you, the Fund mails one shareholder report to each shareholder address, unless such shareholder elects to receive shareholder reports from the Fund electronically via e-mail or by having a paper notice mailed to you (Postcard Notice) that your Fund’s shareholder report is available at the Columbia funds’ website (columbiathreadneedleus.com/investor/). If you would like more than one report in paper to be mailed to you, or would like to elect to receive reports via e-mail or access them through Postcard Notice, please call shareholder services at 800.345.6611 and additional reports will be sent to you.
Proxy voting policies and procedures
The policy of the Board of Trustees is to vote the proxies of the companies in which the Fund holds investments consistent with the procedures as stated in the Statement of Additional Information (SAI). You may obtain a copy of the SAI without charge by calling 800.345.6611; contacting your financial intermediary; visiting columbiathreadneedleus.com/investor/; or searching the website of the Securities and Exchange Commission (SEC) at sec.gov. Information regarding how the Fund voted proxies relating to portfolio securities is filed with the SEC by August 31st for the most recent 12-month period ending June 30th of that year, and is available without charge by visiting columbiathreadneedleus.com/investor/, or searching the website of the SEC at sec.gov.
Quarterly schedule of investments
The Fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. The Fund’s Form N-PORT filings are available on the SEC’s website at sec.gov. The Fund’s complete schedule of portfolio holdings, as filed on Form N-PORT, can also be obtained without charge, upon request, by calling 800.345.6611.
Additional Fund information
For more information about the Fund, please visit columbiathreadneedleus.com/investor/ or call 800.345.6611. Customer Service Representatives are available to answer your questions Monday through Friday from 8 a.m. to 7 p.m. Eastern time.
Fund investment manager
Columbia Management Investment Advisers, LLC (the Investment Manager)
225 Franklin Street
Boston, MA 02110
Fund distributor
Columbia Management Investment Distributors, Inc.
225 Franklin Street
Boston, MA 02110
Fund transfer agent
Columbia Management Investment Services Corp.
P.O. Box 219104
Kansas City, MO 64121-9104
Columbia Georgia Intermediate Municipal Bond Fund  |  Annual Report 2021

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Fund at a Glance
Investment objective
The Fund seeks current income exempt from U.S. federal income tax and Georgia individual income tax, consistent with moderate fluctuation of principal.
The Board of Trustees of the Fund has approved a Plan of Liquidation and Termination (the Plan). Under the terms of the Plan, the Fund was liquidated on or about May 7, 2021 (the Liquidation Date).
Portfolio management
Paul Fuchs, CFA
Lead Portfolio Manager
Managed Fund since 2016
Anders Myhran, CFA
Portfolio Manager
Managed Fund since 2019
Deborah Vargo
Portfolio Manager
Managed Fund since 2017
Average annual total returns (%) (for the period ended April 30, 2021)
    Inception 1 Year 5 Years 10 Years
Class A Excluding sales charges 05/04/92 5.84 2.28 2.94
  Including sales charges   2.65 1.66 2.63
Advisor Class* 03/19/13 6.11 2.54 3.20
Class C Excluding sales charges 06/17/92 4.94 1.52 2.17
  Including sales charges   3.94 1.52 2.17
Institutional Class 03/01/92 6.10 2.54 3.20
Institutional 3 Class* 03/01/17 6.11 2.61 3.23
Bloomberg Barclays 3-15 Year Blend Municipal Bond Index   6.82 3.20 3.90
Returns for Class A shares are shown with and without the maximum initial sales charge of 3.00%. Returns for Class C shares are shown with and without the 1.00% contingent deferred sales charge for the first year only. The Fund’s other share classes are not subject to sales charges and have limited eligibility. Please see the Fund’s prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each share class. All results shown assume reinvestment of distributions during the period. Returns do not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares. Performance results reflect the effect of any fee waivers or reimbursements of Fund expenses by Columbia Management Investment Advisers, LLC and/or any of its affiliates. Absent these fee waivers or expense reimbursement arrangements, performance results would have been lower.
The performance information shown represents past performance and is not a guarantee of future results. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information shown. You may obtain performance information current to the most recent month-end by contacting your financial intermediary, visiting columbiathreadneedleus.com/investor/ or calling 800.345.6611.
* The returns shown for periods prior to the share class inception date (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of the Fund’s oldest share class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products /mutual-funds/appended-performance for more information.
The Bloomberg Barclays 3–15 Year Blend Municipal Bond Index is an unmanaged index that tracks the performance of municipal bonds issued after December 31, 1990, with remaining maturities between 2 and 17 years and at least $7 million in principal amount outstanding.
Indices are not available for investment, are not professionally managed and do not reflect sales charges, fees, brokerage commissions, taxes or other expenses of investing. Securities in the Fund may not match those in an index.
Fund performance may be significantly negatively impacted by the economic impact of the COVID-19 pandemic. The COVID-19 pandemic has adversely impacted economies and capital markets around the world in ways that will likely continue and may change in unforeseen ways for an indeterminate period. The COVID-19 pandemic may exacerbate pre-existing political, social and economic risks in certain countries and globally.
Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Fund at a Glance   (continued)
Performance of a hypothetical $10,000 investment (April 30, 2011 — April 30, 2021)
The chart above shows the change in value of a hypothetical $10,000 investment in Class A shares of Columbia Georgia Intermediate Municipal Bond Fund during the stated time period, and does not reflect the deduction of taxes that a shareholder may pay on Fund distributions or on the redemption of Fund shares.
Portfolio breakdown (%) (at April 30, 2021)
Money Market Funds 100.0
Total 100.0
Percentages indicated are based upon total investments excluding investments in derivatives, if any. The Fund’s portfolio composition is subject to change.
4 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Manager Discussion of Fund Performance
For the 12-month period that ended April 30, 2021, the Fund’s Class A shares returned 5.84% excluding sales charges. The Fund’s Institutional Class shares returned 6.10%. During the same time period, the Fund’s benchmark, the Bloomberg Barclays 3-15 Year Blend Municipal Bond Index, which is national in scope, returned 6.82%.
Market overview
As the annual period began in May 2020, the relative value of the national municipal bond market versus other fixed-income sectors was enough to drive both municipal bond mutual fund inflows and the best month of total returns for the benchmark since September 2009. Price stability and substantial demand for a new issue calendar helped lead to a second consecutive month of gains in June. Optimism spilled over from strong summer technicals, or supply/demand factors, pushing municipal bond returns higher to start the third calendar quarter. However, by mid-August 2020, sentiment had turned cautious as investors paused to reassess the overhang of COVID-19-driven economic weakness and uncertainty regarding the upcoming U.S. election. Despite relative stability in September, record issuance during October started the fourth calendar quarter on uneasy footing. As issuers rushed to float new deals ahead of the November elections, excess supply and upward rate pressure during the month pushed municipal bond total returns into negative territory. Heading into year-end 2020, positive news regarding COVID-19 vaccine approvals sparked a renewed bid for risk assets, including municipal bonds. Further, after having flooded the market with pre-election supply, municipal bond investors were left with limited new issuance to meet demand in November and December, a dynamic that helped end the year on a positive note.
The new year 2021 began with a continuation of the strong municipal bond performance that had closed 2020. Despite the gradual upward march of U.S. Treasury yields, municipal bond performance remained positive as supply remained light and spreads, or yield differentials to duration-equivalent U.S. Treasuries, tightened. By mid-February, however, municipal bonds succumbed to the upward pull of U.S. Treasury yields, and municipal bond yields moved higher across much of the maturity spectrum, with only the shortest maturities avoiding substantial yield spikes. Rather than sparking mutual fund outflows, municipal bond investors took the opportunity to put cash to work at higher yield levels. By the end of March 2021, yields had retraced somewhat lower, reviving municipal bond outperformance versus U.S. Treasuries, though the benchmark recorded a modestly negative return for the first calendar quarter overall. U.S. Treasury yields ended April 2021 modestly lower, though municipal bond outperformance versus U.S. Treasuries held firm for the month. All told, municipal bond mutual fund inflows totaled $41.5 billion through the first four months of 2021 (Source: Lipper). National municipal bond market fundamentals were supported by a combination of better-than-forecasted tax revenue collections, an uptick in economic activity and federal stimulus support via the American Rescue Plan, which includes direct assistance of $350 billion for state and local governments and additional funding for education, transportation and public health.
A significant trend through much of the annual period was the marked increase in taxable municipal issuance, which reduced supply that would have otherwise come into the tax-exempt market as issuers used taxable debt to refinance outstanding tax-exempt debt. Importantly, with absolute yields low, this trend provided a positive supply/demand scenario for the tax-exempt market by further reducing the supply of tax-exempt issues.
The lower rated investment-grade segment of the national municipal market outperformed the highest quality rated areas for the period, demonstrating the continued improvement as the period progressed in areas that were hardest hit by COVID-19 shutdowns.
Within Georgia, state economic conditions and revenue collections recovered over the period, driven in large part by an unprecedented level of federal stimulus into the U.S. economy. At March 30, 2021, Georgia’s unemployment rate was 4.5%, significantly lower than the state’s unemployment rate as of April 2020. Further, the state is expected to receive $4.65B of direct federal aid, equal to about 9% of its annual budget, from the American Rescue Plan passed in March 2021.
The Fund’s most notable detractors during the period
The Georgia municipal bond market slightly lagged the broader national market as risk overall was rewarded over the course of the reporting period.
More dramatically, in the intermediate space, Georgia municipal bonds couldn’t keep pace with its national peers.
The Fund was underweight in municipal bonds rated BBB, a segment of the municipal market that outperformed during the period.
Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021
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Table of Contents
Manager Discussion of Fund Performance  (continued)
Georgia is home to more AAA rated issuers and fewer A and BBB rated credits than the national market, which was a headwind as lower rated investment-grade (rated A & BBB) handily outperformed higher investment-grade (rated AAA & AA) municipal bonds.
The Fund’s overall duration positioning hurt as the Fund was modestly short in duration as compared to the benchmark for portions of the period while yields were declining.
The Fund’s cash position and exposure to municipal bonds with maturities shorter than the benchmark (less than 2 years) also weighed on Fund results.
Underweight exposure, relative to the benchmark, in the transportation and leasing sectors, as well as an overweight to the education sector also weighed on results.
The Fund’s most notable contributors during the period
An underweight in municipal bonds in the 2-5 year maturity range and an overweight to municipal bonds with maturities of 10+ years contributed to the Fund’s performance.
The Fund’s overweight to municipal bonds rated A contributed to performance, as lower rated municipal bonds outperformed higher quality municipal bonds during the period.
An overweight to the hospital sector benefited Fund results.
Security selection within the electric and water & sewer sectors also contributed to results.
Fixed-income securities present issuer default risk. The Fund invests substantially in municipal securities and will be affected by tax, legislative, regulatory, demographic or political changes, as well as changes impacting a state’s financial, economic or other conditions. A relatively small number of tax-exempt issuers may necessitate the Fund investing more heavily in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of the Fund’s portfolio may be more volatile than a more geographically diversified fund. Prepayment and extension risk exists because the timing of payments on a loan, bond or other investment may accelerate when interest rates fall or decelerate when interest rates rise which may reduce investment opportunities and potential returns. A rise in interest rates may result in a price decline of fixed-income instruments held by the Fund, negatively impacting its performance and NAV. Falling rates may result in the Fund investing in lower yielding debt instruments, lowering the Fund’s income and yield. These risks may be heightened for longer maturity and duration securities. Non-investment-grade (high-yield or junk) securities present greater price volatility and more risk to principal and income than higher rated securities. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. Federal and state tax rules apply to capital gain distributions and any gains or losses on sales. Income may be subject to state or local taxes. Liquidity risk is associated with the difficulty of selling underlying investments at a desirable time or price. See the Fund’s prospectus for more information on these and other risks.
The views expressed in this report reflect the current views of the respective parties who have contributed to the report. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict, so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia fund. References to specific securities should not be construed as a recommendation or investment advice.
6 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

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Understanding Your Fund’s Expenses
(Unaudited)
As an investor, you incur two types of costs. There are shareholder transaction costs, which generally include sales charges on purchases and may include redemption fees. There are also ongoing fund costs, which generally include management fees, distribution and/or service fees, and other fund expenses. The following information is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to help you compare these costs with the ongoing costs of investing in other mutual funds.
Analyzing your Fund’s expenses
To illustrate these ongoing costs, we have provided examples and calculated the expenses paid by investors in each share class of the Fund during the period. The actual and hypothetical information in the table is based on an initial investment of $1,000 at the beginning of the period indicated and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the “Actual” column is calculated using the Fund’s actual operating expenses and total return for the period. You may use the Actual information, together with the amount invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the results by the expenses paid during the period under the “Actual” column. The amount listed in the “Hypothetical” column assumes a 5% annual rate of return before expenses (which is not the Fund’s actual return) and then applies the Fund’s actual expense ratio for the period to the hypothetical return. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during the period. See “Compare with other funds” below for details on how to use the hypothetical data.
Compare with other funds
Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the Fund with other funds. To do so, compare the hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other funds, it is important to note that hypothetical examples are meant to highlight the ongoing costs of investing in a fund only and do not reflect any transaction costs, such as sales charges, or redemption or exchange fees. Therefore, the hypothetical calculations are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. If transaction costs were included in these calculations, your costs would be higher.
November 1, 2020 — April 30, 2021
  Account value at the
beginning of the
period ($)
Account value at the
end of the
period ($)
Expenses paid during
the period ($)
Fund’s annualized
expense ratio (%)
  Actual Hypothetical Actual Hypothetical Actual Hypothetical Actual
Class A 1,000.00 1,000.00 1,019.00 1,020.89 4.08 4.08 0.81
Advisor Class 1,000.00 1,000.00 1,020.30 1,022.14 2.82 2.82 0.56
Class C 1,000.00 1,000.00 1,014.30 1,017.15 7.83 7.85 1.56
Institutional Class 1,000.00 1,000.00 1,020.30 1,022.14 2.82 2.82 0.56
Institutional 3 Class 1,000.00 1,000.00 1,019.90 1,022.69 2.27 2.27 0.45
Expenses paid during the period are equal to the annualized expense ratio for each class as indicated above, multiplied by the average account value over the period and then multiplied by the number of days in the Fund’s most recent fiscal half year and divided by 365.
Expenses do not include fees and expenses incurred indirectly by the Fund from its investment in underlying funds, including affiliated and non-affiliated pooled investment vehicles, such as mutual funds and exchange-traded funds.
Had Columbia Management Investment Advisers, LLC and/or certain of its affiliates not waived/reimbursed certain fees and expenses, account value at the end of the period would have been reduced.
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Table of Contents
Portfolio of Investments
April 30, 2021
(Percentages represent value of investments compared to net assets)
Investments in securities
Money Market Funds 100.6%
  Shares Value ($)
JPMorgan Institutional Tax Free Money Market Fund, Institutional Shares, 0.006%(a) 28,198,149 28,212,816
Total Money Market Funds
(Cost $28,212,816)
28,212,816
Total Investments in Securities
(Cost: $28,212,816)
28,212,816
Other Assets & Liabilities, Net   (169,731)
Net Assets 28,043,085
Notes to Portfolio of Investments
(a) The rate shown is the seven-day current annualized yield at April 30, 2021.
Fair value measurements
The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset’s or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
Fair value inputs are summarized in the three broad levels listed below:
Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.
Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).
Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Investment Manager, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.
Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models may rely on one or more significant unobservable inputs and/or significant assumptions by the Investment Manager. Inputs used in valuations may include, but are not limited to, financial statement analysis, capital account balances, discount rates and estimated cash flows, and comparable company data.
Under the direction of the Fund’s Board of Trustees (the Board), the Investment Manager’s Valuation Committee (the Committee) is responsible for overseeing the valuation procedures approved by the Board. The Committee consists of voting and non-voting members from various groups within the Investment Manager’s organization, including operations and accounting, trading and investments, compliance, risk management and legal.
The Committee meets at least monthly to review and approve valuation matters, which may include a description of specific valuation determinations, data regarding pricing information received from approved pricing vendors and brokers and the results of Board-approved valuation control policies and procedures (the Policies). The Policies address, among other things, instances when market quotations are or are not readily available, including recommendations of third party pricing vendors and a determination of appropriate pricing methodologies; events that require specific valuation determinations and assessment of fair value techniques; securities with a potential for stale pricing, including those that are illiquid, restricted, or in default; and the effectiveness of third party pricing vendors, including periodic reviews of vendors. The Committee meets more frequently, as needed, to discuss additional valuation matters, which may include the need to review back-testing results, review time-sensitive information or approve related valuation actions. The Committee reports to the Board, with members of the Committee meeting with the Board at each of its regularly scheduled meetings to discuss valuation matters and actions during the period, similar to those described earlier.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Portfolio of Investments  (continued)
April 30, 2021
Fair value measurements  (continued)
The following table is a summary of the inputs used to value the Fund’s investments at April 30, 2021:
  Level 1 ($) Level 2 ($) Level 3 ($) Total ($)
Investments in Securities        
Money Market Funds 28,212,816 28,212,816
Total Investments in Securities 28,212,816 28,212,816
See the Portfolio of Investments for all investment classifications not indicated in the table.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Assets and Liabilities
April 30, 2021
Assets  
Investments in securities, at value  
Unaffiliated issuers (cost $28,212,816) $28,212,816
Receivable for:  
Capital shares sold 17,384
Expense reimbursement due from Investment Manager 287
Total assets 28,230,487
Liabilities  
Payable for:  
Capital shares purchased 6,270
Distributions to shareholders 34,748
Management services fees 370
Distribution and/or service fees 68
Transfer agent fees 3,657
Compensation of board members 126,560
Audit fees 14,750
Other expenses 979
Total liabilities 187,402
Net assets applicable to outstanding capital stock $28,043,085
Represented by  
Paid in capital 25,503,494
Total distributable earnings (loss) 2,539,591
Total - representing net assets applicable to outstanding capital stock $28,043,085
Class A  
Net assets $7,827,897
Shares outstanding 733,683
Net asset value per share $10.67
Maximum sales charge 3.00%
Maximum offering price per share (calculated by dividing the net asset value per share by 1.0 minus the maximum sales charge for Class A shares) $11.00
Advisor Class  
Net assets $232,288
Shares outstanding 21,799
Net asset value per share $10.66
Class C  
Net assets $523,490
Shares outstanding 49,058
Net asset value per share $10.67
Institutional Class  
Net assets $19,449,141
Shares outstanding 1,823,397
Net asset value per share $10.67
Institutional 3 Class  
Net assets $10,269
Shares outstanding 961
Net asset value per share $10.69
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Operations
Year Ended April 30, 2021
Net investment income  
Income:  
Dividends — unaffiliated issuers $1,059
Interest 1,032,794
Total income 1,033,853
Expenses:  
Management services fees 184,194
Distribution and/or service fees  
Class A 22,989
Class C 11,853
Transfer agent fees  
Class A 11,674
Advisor Class 301
Class C 1,496
Institutional Class 35,866
Institutional 3 Class 55
Compensation of board members 59,359
Custodian fees 1,040
Printing and postage fees 13,104
Registration fees 5,344
Audit fees 29,500
Legal fees 8,376
Compensation of chief compliance officer 8
Other 8,708
Total expenses 393,867
Fees waived or expenses reimbursed by Investment Manager and its affiliates (138,802)
Total net expenses 255,065
Net investment income 778,788
Realized and unrealized gain (loss) — net  
Net realized gain (loss) on:  
Investments — unaffiliated issuers 2,591,794
Net realized gain 2,591,794
Net change in unrealized appreciation (depreciation) on:  
Investments — unaffiliated issuers (1,072,465)
Net change in unrealized appreciation (depreciation) (1,072,465)
Net realized and unrealized gain 1,519,329
Net increase in net assets resulting from operations $2,298,117
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Statement of Changes in Net Assets
  Year Ended
April 30, 2021
Year Ended
April 30, 2020
Operations    
Net investment income $778,788 $1,052,381
Net realized gain 2,591,794 234,741
Net change in unrealized appreciation (depreciation) (1,072,465) (350,656)
Net increase in net assets resulting from operations 2,298,117 936,466
Distributions to shareholders    
Net investment income and net realized gains    
Class A (220,730) (236,754)
Advisor Class (6,165) (7,357)
Class C (20,348) (25,660)
Institutional Class (756,918) (773,158)
Institutional 3 Class (8,113) (9,452)
Total distributions to shareholders (1,012,274) (1,052,381)
Increase (decrease) in net assets from capital stock activity (13,473,354) 2,939
Total decrease in net assets (12,187,511) (112,976)
Net assets at beginning of year 40,230,596 40,343,572
Net assets at end of year $28,043,085 $40,230,596
The accompanying Notes to Financial Statements are an integral part of this statement.
12 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Statement of Changes in Net Assets   (continued)
  Year Ended Year Ended
  April 30, 2021 April 30, 2020
  Shares Dollars ($) Shares Dollars ($)
Capital stock activity
Class A        
Subscriptions 178,921 1,910,875 122,112 1,282,512
Distributions reinvested 14,695 156,421 16,668 175,433
Redemptions (333,016) (3,543,185) (264,922) (2,779,330)
Net decrease (139,400) (1,475,889) (126,142) (1,321,385)
Advisor Class        
Subscriptions 5,422 57,654
Distributions reinvested 556 5,908 676 7,108
Redemptions (2,179) (23,161) (12,703) (131,503)
Net increase (decrease) 3,799 40,401 (12,027) (124,395)
Class C        
Subscriptions 3,480 36,995 798 8,397
Distributions reinvested 1,769 18,846 2,062 21,708
Redemptions (92,701) (986,888) (76,549) (803,060)
Net decrease (87,452) (931,047) (73,689) (772,955)
Institutional Class        
Subscriptions 427,937 4,548,614 940,996 9,942,581
Distributions reinvested 15,289 162,652 14,441 151,993
Redemptions (1,424,757) (15,140,756) (794,305) (8,416,377)
Net increase (decrease) (981,531) (10,429,490) 161,132 1,678,197
Institutional 3 Class        
Subscriptions 47,091 493,878 54,386 571,199
Distributions reinvested 688 7,340 870 9,185
Redemptions (111,646) (1,178,547) (3,541) (36,907)
Net increase (decrease) (63,867) (677,329) 51,715 543,477
Total net increase (decrease) (1,268,451) (13,473,354) 989 2,939
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights
The following table is intended to help you understand the Fund’s financial performance. Certain information reflects financial results for a single share of a class held for the periods shown. Per share net investment income (loss) amounts are calculated based on average shares outstanding during the period. Total return assumes reinvestment of all dividends and distributions, if any. Total return does not reflect payment of sales charges, if any. Total return and portfolio turnover are not annualized for periods of less than one year. The portfolio turnover rate is calculated without regard to purchase and sales transactions of short-term instruments and certain derivatives, if any. If such transactions were included, the Fund’s portfolio turnover rate may be higher.
  Net asset value,
beginning of
period
Net
investment
income
Net
realized
and
unrealized
gain (loss)
Total from
investment
operations
Distributions
from net
investment
income
Distributions
from net
realized
gains
Total
distributions to
shareholders
Class A
Year Ended 4/30/2021 $10.32 0.19 0.41 0.60 (0.19) (0.06) (0.25)
Year Ended 4/30/2020 $10.35 0.24 (0.03) 0.21 (0.24) (0.24)
Year Ended 4/30/2019 $10.17 0.27 0.18 0.45 (0.27) (0.27)
Year Ended 4/30/2018 $10.45 0.26 (0.24) 0.02 (0.26) (0.04) (0.30)
Year Ended 4/30/2017 $10.88 0.27 (0.37) (0.10) (0.27) (0.06) (0.33)
Advisor Class
Year Ended 4/30/2021 $10.31 0.22 0.41 0.63 (0.22) (0.06) (0.28)
Year Ended 4/30/2020 $10.34 0.27 (0.03) 0.24 (0.27) (0.27)
Year Ended 4/30/2019 $10.15 0.30 0.19 0.49 (0.30) (0.30)
Year Ended 4/30/2018 $10.44 0.28 (0.25) 0.03 (0.28) (0.04) (0.32)
Year Ended 4/30/2017 $10.87 0.30 (0.38) (0.08) (0.29) (0.06) (0.35)
Class C
Year Ended 4/30/2021 $10.33 0.12 0.39 0.51 (0.11) (0.06) (0.17)
Year Ended 4/30/2020 $10.36 0.16 (0.03) 0.13 (0.16) (0.16)
Year Ended 4/30/2019 $10.17 0.20 0.19 0.39 (0.20) (0.20)
Year Ended 4/30/2018 $10.46 0.18 (0.25) (0.07) (0.18) (0.04) (0.22)
Year Ended 4/30/2017 $10.88 0.19 (0.36) (0.17) (0.19) (0.06) (0.25)
Institutional Class
Year Ended 4/30/2021 $10.32 0.22 0.41 0.63 (0.22) (0.06) (0.28)
Year Ended 4/30/2020 $10.35 0.27 (0.03) 0.24 (0.27) (0.27)
Year Ended 4/30/2019 $10.16 0.30 0.19 0.49 (0.30) (0.30)
Year Ended 4/30/2018 $10.45 0.28 (0.25) 0.03 (0.28) (0.04) (0.32)
Year Ended 4/30/2017 $10.88 0.30 (0.37) (0.07) (0.30) (0.06) (0.36)
Institutional 3 Class
Year Ended 4/30/2021 $10.35 0.25 0.38 0.63 (0.23) (0.06) (0.29)
Year Ended 4/30/2020 $10.38 0.27 (0.02) 0.25 (0.28) (0.28)
Year Ended 4/30/2019 $10.19 0.31 0.19 0.50 (0.31) (0.31)
Year Ended 4/30/2018 $10.48 0.29 (0.25) 0.04 (0.29) (0.04) (0.33)
Year Ended 4/30/2017(d) $10.41 0.05 0.07 0.12 (0.05) (0.05)
    
Notes to Financial Highlights
(a) In addition to the fees and expenses that the Fund bears directly, the Fund indirectly bears a pro rata share of the fees and expenses of any other funds in which it invests. Such indirect expenses are not included in the Fund’s reported expense ratios.
(b) Total net expenses include the impact of certain fee waivers/expense reimbursements made by the Investment Manager and certain of its affiliates, if applicable.
(c) Ratios include interfund lending expense which is less than 0.01%.
(d) Institutional 3 Class shares commenced operations on March 1, 2017. Per share data and total return reflect activity from that date.
(e) Annualized.
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Financial Highlights  (continued)
  Net
asset
value,
end of
period
Total
return
Total gross
expense
ratio to
average
net assets(a)
Total net
expense
ratio to
average
net assets(a),(b)
Net investment
income
ratio to
average
net assets
Portfolio
turnover
Net
assets,
end of
period
(000’s)
Class A
Year Ended 4/30/2021 $10.67 5.84% 1.17% 0.81% 1.81% 11% $7,828
Year Ended 4/30/2020 $10.32 2.02% 0.99% 0.81% 2.30% 21% $9,014
Year Ended 4/30/2019 $10.35 4.53% 1.02%(c) 0.81%(c) 2.68% 3% $10,347
Year Ended 4/30/2018 $10.17 0.12% 0.98% 0.81% 2.45% 12% $11,819
Year Ended 4/30/2017 $10.45 (0.93%) 1.03% 0.81% 2.54% 14% $18,934
Advisor Class
Year Ended 4/30/2021 $10.66 6.11% 0.93% 0.56% 2.03% 11% $232
Year Ended 4/30/2020 $10.31 2.27% 0.75% 0.56% 2.55% 21% $186
Year Ended 4/30/2019 $10.34 4.90% 0.79%(c) 0.56%(c) 2.95% 3% $311
Year Ended 4/30/2018 $10.15 0.27% 0.73% 0.56% 2.69% 12% $126
Year Ended 4/30/2017 $10.44 (0.68%) 0.77% 0.56% 2.79% 14% $275
Class C
Year Ended 4/30/2021 $10.67 4.94% 1.90% 1.56% 1.11% 11% $523
Year Ended 4/30/2020 $10.33 1.25% 1.74% 1.56% 1.56% 21% $1,410
Year Ended 4/30/2019 $10.36 3.85% 1.77%(c) 1.56%(c) 1.93% 3% $2,177
Year Ended 4/30/2018 $10.17 (0.72%) 1.73% 1.56% 1.70% 12% $3,068
Year Ended 4/30/2017 $10.46 (1.57%) 1.78% 1.56% 1.78% 14% $3,733
Institutional Class
Year Ended 4/30/2021 $10.67 6.10% 0.91% 0.56% 2.07% 11% $19,449
Year Ended 4/30/2020 $10.32 2.27% 0.74% 0.56% 2.53% 21% $28,951
Year Ended 4/30/2019 $10.35 4.90% 0.76%(c) 0.56%(c) 2.93% 3% $27,373
Year Ended 4/30/2018 $10.16 0.28% 0.73% 0.56% 2.70% 12% $37,698
Year Ended 4/30/2017 $10.45 (0.68%) 0.78% 0.56% 2.79% 14% $46,421
Institutional 3 Class
Year Ended 4/30/2021 $10.69 6.11% 0.78% 0.46% 2.31% 11% $10
Year Ended 4/30/2020 $10.35 2.38% 0.61% 0.46% 2.61% 21% $671
Year Ended 4/30/2019 $10.38 5.00% 0.66%(c) 0.45%(c) 3.04% 3% $136
Year Ended 4/30/2018 $10.19 0.39% 0.61% 0.46% 2.82% 12% $140
Year Ended 4/30/2017(d) $10.48 1.17% 0.64%(e) 0.43%(e) 3.04%(e) 14% $10
The accompanying Notes to Financial Statements are an integral part of this statement.
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Table of Contents
Notes to Financial Statements
April 30, 2021
Note 1. Organization
Columbia Georgia Intermediate Municipal Bond Fund (the Fund), a series of Columbia Funds Series Trust (the Trust), is a diversified fund. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Delaware statutory trust.
Fund shares
The Trust may issue an unlimited number of shares (without par value). The Fund offers each of the share classes listed in the Statement of Assets and Liabilities. Although all share classes generally have identical voting, dividend and liquidation rights, each share class votes separately when required by the Trust’s organizational documents or by law. Each share class has its own expense and sales charge structure. Different share classes may have different minimum initial investment amounts and pay different net investment income distribution amounts to the extent the expenses of distributing such share classes vary. Distributions to shareholders in a liquidation will be proportional to the net asset value of each share class.
As described in the Fund’s prospectus, Class A and Class C shares are offered to the general public for investment. Effective April 1, 2021, Class C shares automatically convert to Class A shares after 8 years. Prior to April 1, 2021, Class C shares automatically converted to Class A shares after 10 years. Advisor Class, Institutional Class and Institutional 3 Class shares are available through authorized investment professionals to omnibus retirement plans or to institutional investors and to certain other investors as also described in the Fund’s prospectus.
Note 2. Summary of significant accounting policies
Basis of preparation
The Fund is an investment company that applies the accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946, Financial Services - Investment Companies (ASC 946). The financial statements are prepared in accordance with U.S. generally accepted accounting principles (GAAP), which requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements.
Security valuation
Investments in open-end investment companies (other than exchange-traded funds (ETFs)), are valued at the latest net asset value reported by those companies as of the valuation time.
Investments for which market quotations are not readily available, or that have quotations which management believes are not reflective of market value or reliable, are valued at fair value as determined in good faith under procedures approved by and under the general supervision of the Board of Trustees. If a security or class of securities (such as foreign securities) is valued at fair value, such value is likely to be different from the quoted or published price for the security, if available.
The determination of fair value often requires significant judgment. To determine fair value, management may use assumptions including but not limited to future cash flows and estimated risk premiums. Multiple inputs from various sources may be used to determine fair value.
GAAP requires disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category. This information is disclosed following the Fund’s Portfolio of Investments.
Security transactions
Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Income recognition
Interest income is recorded on an accrual basis. Market premiums and discounts, including original issue discounts, are amortized and accreted, respectively, over the expected life of the security on all debt securities, unless otherwise noted.
The Fund may place a debt security on non-accrual status and reduce related interest income when it becomes probable that the interest will not be collected and the amount of uncollectible interest can be reasonably estimated. A defaulted debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.
Dividend income is recorded on the ex-dividend date.
Expenses
General expenses of the Trust are allocated to the Fund and other funds of the Trust based upon relative net assets or other expense allocation methodologies determined by the nature of the expense. Expenses directly attributable to the Fund are charged to the Fund. Expenses directly attributable to a specific class of shares are charged to that share class.
Determination of class net asset value
All income, expenses (other than class-specific expenses, which are charged to that share class, as shown in the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis, based on the relative net assets of each class, for purposes of determining the net asset value of each class.
Federal income tax status
The Fund intends to qualify each year as a regulated investment company under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its net tax-exempt and investment company taxable income and net capital gain, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its ordinary income, capital gain net income and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded.
Distributions to shareholders
Distributions from net investment income, if any, are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Income distributions and capital gain distributions are determined in accordance with federal income tax regulations, which may differ from GAAP.
Guarantees and indemnifications
Under the Trust’s organizational documents and, in some cases, by contract, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust or its funds. In addition, certain of the Fund’s contracts with its service providers contain general indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown since the amount of any future claims that may be made against the Fund cannot be determined, and the Fund has no historical basis for predicting the likelihood of any such claims.
Note 3. Fees and other transactions with affiliates
Management services fees
The Fund has entered into a Management Agreement with Columbia Management Investment Advisers, LLC (the Investment Manager), a wholly-owned subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Under the Management Agreement, the Investment Manager provides the Fund with investment research and advice, as well as administrative and accounting services. The management services fee is an annual fee that is equal to a percentage of the Fund’s daily net assets that declines from 0.47% to 0.31% as the Fund’s net assets increase. The effective management services fee rate for the year ended April 30, 2021 was 0.47% of the Fund’s average daily net assets.
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Compensation of board members
Members of the Board of Trustees who are not officers or employees of the Investment Manager or Ameriprise Financial are compensated for their services to the Fund as disclosed in the Statement of Operations. Under a Deferred Compensation Plan (the Deferred Plan), these members of the Board of Trustees may elect to defer payment of up to 100% of their compensation. Deferred amounts are treated as though equivalent dollar amounts had been invested in shares of certain funds managed by the Investment Manager. The Fund’s liability for these amounts is adjusted for market value changes and remains in the Fund until distributed in accordance with the Deferred Plan. All amounts payable under the Deferred Plan constitute a general unsecured obligation of the Fund. The expense for the Deferred Plan, which includes Trustees’ fees deferred during the current period as well as any gains or losses on the Trustees’ deferred compensation balances as a result of market fluctuations, is included in "Compensation of board members" on the Statement of Operations.
Compensation of Chief Compliance Officer
The Board of Trustees has appointed a Chief Compliance Officer for the Fund in accordance with federal securities regulations. As disclosed in the Statement of Operations, a portion of the Chief Compliance Officer’s total compensation is allocated to the Fund, along with other allocations to affiliated registered investment companies managed by the Investment Manager and its affiliates, based on relative net assets.
Transactions with affiliates
For the year ended April 30, 2021, the Fund engaged in purchase and/or sale transactions with affiliates and/or accounts that have a common investment manager (or affiliated investment managers), common directors/trustees, and/or common officers. Those purchase and sale transactions complied with provisions of Rule 17a-7 under the 1940 Act and were $0 and $907,560, respectively. The sale transactions resulted in a net realized gain of $95,811.
Transfer agency fees
Under a Transfer and Dividend Disbursing Agent Agreement, Columbia Management Investment Services Corp. (the Transfer Agent), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, is responsible for providing transfer agency services to the Fund. The Transfer Agent has contracted with DST Asset Manager Solutions, Inc. (DST) to serve as sub-transfer agent. The Transfer Agent pays the fees of DST for services as sub-transfer agent and DST is not entitled to reimbursement for such fees from the Fund (with the exception of out-of-pocket fees).
The Fund pays the Transfer Agent a monthly transfer agency fee based on the number or the average value of accounts, depending on the type of account. In addition, the Fund pays the Transfer Agent a fee for shareholder services based on the number of accounts or on a percentage of the average aggregate value of the Fund’s shares maintained in omnibus accounts up to the lesser of the amount charged by the financial intermediary or a cap established by the Board of Trustees from time to time.
The Transfer Agent also receives compensation from the Fund for various shareholder services and reimbursements for certain out-of-pocket fees. Total transfer agency fees for Institutional 3 Class shares are subject to an annual limitation of not more than 0.02% of the average daily net assets attributable to Institutional 3 Class shares.
For the year ended April 30, 2021, the Fund’s effective transfer agency fee rates as a percentage of average daily net assets of each class were as follows:
  Effective rate (%)
Class A 0.13
Advisor Class 0.13
Class C 0.13
Institutional Class 0.13
Institutional 3 Class 0.02
18 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
An annual minimum account balance fee of $20 may apply to certain accounts with a value below the applicable share class’s initial minimum investment requirements to reduce the impact of small accounts on transfer agency fees. These minimum account balance fees are remitted to the Fund and recorded as part of expense reductions in the Statement of Operations. For the year ended April 30, 2021, no minimum account balance fees were charged by the Fund.
Distribution and service fees
The Fund has entered into an agreement with Columbia Management Investment Distributors, Inc. (the Distributor), an affiliate of the Investment Manager and a wholly-owned subsidiary of Ameriprise Financial, for distribution and shareholder services. The Board of Trustees has approved, and the Fund has adopted, distribution and shareholder service plans (the Plans) applicable to certain share classes, which set the distribution and service fees for the Fund. These fees are calculated daily and are intended to compensate the Distributor and/or eligible selling and/or servicing agents for selling shares of the Fund and providing services to investors.
Under the Plans, the Fund pays a monthly combined distribution and service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class A shares of the Fund. Also under the Plans, the Fund pays a monthly service fee to the Distributor at the maximum annual rate of 0.25% of the average daily net assets attributable to Class C shares of the Fund and a monthly distribution fee to the Distributor at the maximum annual rate of 0.75% of the average daily net assets attributable to Class C shares of the Fund.
Sales charges (unaudited)
Sales charges, including front-end charges and contingent deferred sales charges (CDSCs), received by the Distributor for distributing Fund shares for the year ended April 30, 2021, if any, are listed below:
  Front End (%) CDSC (%) Amount ($)
Class A 3.00 0.75(a) 6,913
Class C 1.00(b)
    
(a) This charge is imposed on certain investments of $500,000 or more if redeemed within 12 months after purchase.
(b) This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.
The Fund’s other share classes are not subject to sales charges.
Expenses waived/reimbursed by the Investment Manager and its affiliates
The Investment Manager and certain of its affiliates have contractually agreed to waive fees and/or reimburse expenses (excluding certain fees and expenses described below) for the period(s) disclosed below, unless sooner terminated at the sole discretion of the Board of Trustees, so that the Fund’s net operating expenses, after giving effect to fees waived/expenses reimbursed and any balance credits and/or overdraft charges from the Fund’s custodian, do not exceed the following annual rate(s) as a percentage of the class’ average daily net assets:
  September 1, 2020
through
August 31, 2021
Prior to
September 1, 2020
Class A 0.81% 0.81%
Advisor Class 0.56 0.56
Class C 1.56 1.56
Institutional Class 0.56 0.56
Institutional 3 Class 0.45 0.46
Under the agreement governing these fee waivers and/or expense reimbursement arrangements, the following fees and expenses are excluded from the waiver/reimbursement commitment, and therefore will be paid by the Fund, if applicable: taxes (including foreign transaction taxes), expenses associated with investments in affiliated and non-affiliated pooled investment vehicles (including mutual funds and exchange-traded funds), transaction costs and brokerage commissions, costs related to any securities lending program, dividend expenses associated with securities sold short, inverse floater program fees and expenses, transaction charges and interest on borrowed money, interest, infrequent and/or unusual expenses and any other expenses the exclusion of which is specifically approved by the Board of Trustees. This
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
agreement may be modified or amended only with approval from the Investment Manager, certain of its affiliates and the Fund. Any fees waived and/or expenses reimbursed under the expense reimbursement arrangements described above are not recoverable by the Investment Manager or its affiliates in future periods.
Note 4. Federal tax information
The timing and character of income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP because of temporary or permanent book to tax differences.
At April 30, 2021, these differences were primarily due to differing treatment for trustees’ deferred compensation, distributions, distribution reclassifications and earnings and profits distributed to shareholders on the redemption of shares. To the extent these differences were permanent, reclassifications were made among the components of the Fund’s net assets. Temporary differences do not require reclassifications.
The following reclassifications were made:
Excess of distributions
over net investment
income ($)
Accumulated
net realized
gain ($)
Paid in
capital ($)
(146,567) 26,182 120,385
Net investment income (loss) and net realized gains (losses), as disclosed in the Statement of Operations, and net assets were not affected by this reclassification.
The tax character of distributions paid during the years indicated was as follows:
Year Ended April 30, 2021 Year Ended April 30, 2020
Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($) Ordinary
income ($)
Tax-exempt
income ($)
Long-term
capital gains ($)
Total ($)
806,371 205,903 1,012,274 108 1,052,273 1,052,381
Short-term capital gain distributions, if any, are considered ordinary income distributions for tax purposes.
At April 30, 2021, the components of distributable earnings on a tax basis were as follows:
Undistributed
ordinary income ($)
Undistributed tax-
exempt income ($)
Undistributed
long-term
capital gains ($)
Capital loss
carryforwards ($)
Net unrealized
appreciation ($)
43,628 109,099 2,548,172
At April 30, 2021, the cost of all investments for federal income tax purposes along with the aggregate gross unrealized appreciation and depreciation based on that cost was:
Federal
tax cost ($)
Gross unrealized
appreciation ($)
Gross unrealized
(depreciation) ($)
Net unrealized
appreciation ($)
28,212,816
Tax cost of investments and unrealized appreciation/(depreciation) may also include timing differences that do not constitute adjustments to tax basis.
Management of the Fund has concluded that there are no significant uncertain tax positions in the Fund that would require recognition in the financial statements. However, management’s conclusion may be subject to review and adjustment at a later date based on factors including, but not limited to, new tax laws, regulations, and administrative interpretations (including relevant court decisions). Generally, the Fund’s federal tax returns for the prior three fiscal years remain subject to examination by the Internal Revenue Service.
20 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
Note 5. Portfolio information
The cost of purchases and proceeds from sales of securities, excluding short-term investments and derivatives, if any, aggregated to $3,911,169 and $43,689,544, respectively, for the year ended April 30, 2021. The amount of purchase and sale activity impacts the portfolio turnover rate reported in the Financial Highlights.
Note 6. Interfund lending
Pursuant to an exemptive order granted by the Securities and Exchange Commission, the Fund participates in a program (the Interfund Program) allowing each participating Columbia Fund (each, a Participating Fund) to lend money directly to and, except for closed-end funds and money market funds, borrow money directly from other Participating Funds for temporary purposes. The amounts eligible for borrowing and lending under the Interfund Program are subject to certain restrictions.
Interfund loans are subject to the risk that the borrowing fund could be unable to repay the loan when due, and a delay in repayment to the lending fund could result in lost opportunities and/or additional lending costs. The exemptive order is subject to conditions intended to mitigate conflicts of interest arising from the Investment Manager’s relationship with each Participating Fund.
The Fund did not borrow or lend money under the Interfund Program during the year ended April 30, 2021.
Note 7. Line of credit
The Fund has access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A. whereby the Fund may borrow for the temporary funding of shareholder redemptions or for other temporary or emergency purposes. Pursuant to a December 1, 2020 amendment, the credit facility, which is a collective agreement between the Fund and certain other funds managed by the Investment Manager or an affiliated investment manager, severally and not jointly, permits collective borrowings up to $950 million. Interest is charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.25%. Each borrowing under the credit facility matures no later than 60 days after the date of borrowing. The Fund also pays a commitment fee equal to its pro rata share of the unused amount of the credit facility at a rate of 0.15% per annum. The commitment fee is included in other expenses in the Statement of Operations. This agreement expires annually in December unless extended or renewed. Prior to the December 1, 2020 amendment, the Fund had access to a revolving credit facility with a syndicate of banks led by Citibank, N.A., HSBC Bank USA, N.A. and JPMorgan Chase Bank, N.A. which permitted collective borrowings up to $1 billion. Interest was charged to each participating fund based on its borrowings at a rate equal to the higher of (i) the federal funds effective rate, (ii) the one-month LIBOR rate and (iii) the overnight bank funding rate, plus in each case, 1.00%.
The Fund had no borrowings during the year ended April 30, 2021.
Note 8. Significant risks
Credit risk
Credit risk is the risk that the value of debt instruments in the Fund’s portfolio may decline because the issuer defaults or otherwise becomes unable or unwilling, or is perceived to be unable or unwilling, to honor its financial obligations, such as making payments to the Fund when due. Credit rating agencies assign credit ratings to certain debt instruments to indicate their credit risk. Lower rated or unrated debt instruments held by the Fund may present increased credit risk as compared to higher-rated debt instruments.
Interest rate risk
Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities tend to fall, and if interest rates fall, the values of debt securities tend to rise. Actions by governments and central banking authorities can result in increases or decreases in interest rates. Increasing interest rates may negatively affect the value of debt securities held by the Fund, resulting in a negative impact on the Fund’s performance
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
and net asset value per share. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. The Fund is subject to the risk that the income generated by its investments may not keep pace with inflation.
Liquidity risk
Liquidity risk is the risk associated with a lack of marketability of investments which may make it difficult to sell the investment at a desirable time or price. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may adversely affect the liquidity of the Fund’s investments. The Fund may have to accept a lower selling price for the holding, sell other investments, or forego another, more appealing investment opportunity. Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. A less liquid market can lead to an increase in Fund redemptions, which may negatively impact Fund performance and net asset value per share, including, for example, if the Fund is forced to sell securities in a down market.
Market and environment risk
The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund, including causing difficulty in assigning prices to hard-to-value assets in thinly traded and closed markets, significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
The Fund’s performance may also be significantly negatively impacted by the economic impact of the coronavirus disease 2019 (COVID-19) pandemic. The COVID-19 public health crisis has become a pandemic that has resulted in, and may continue to result in, significant global economic and societal disruption and market volatility due to disruptions in market access, resource availability, facilities operations, imposition of tariffs, export controls and supply chain disruption, among others. Such disruptions may be caused, or exacerbated by, quarantines and travel restrictions, workforce displacement and loss in human and other resources. The uncertainty surrounding the magnitude, duration, reach, costs and effects of the global pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, present unknowns that are yet to unfold. The impacts, as well as the uncertainty over impacts to come, of COVID-19 – and any other infectious illness outbreaks, epidemics and pandemics that may arise in the future – could negatively affect global economies and markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illness outbreaks and epidemics in emerging market countries may be greater due to generally less established healthcare systems, governments and financial markets. Public health crises caused by the COVID-19 outbreak may exacerbate other pre-existing political, social and economic risks in certain countries or globally. The disruptions caused by COVID-19 could prevent the Fund from executing advantageous investment decisions in a timely manner and negatively impact the Fund’s ability to achieve its investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund.
The Investment Manager and its affiliates have systematically implemented strategies to address the operating environment spurred by the COVID-19 pandemic. To promote the safety and security of our employees and to assure the continuity of our business operations, we have implemented a work from home protocol for virtually all of our employee population, restricted business travel, and provided resources for complying with the guidance from the World Health Organization, the U.S. Centers for Disease Control and governments. Our operations teams seek to operate without significant disruptions in service. Our pandemic strategy takes into consideration that a pandemic could be widespread and may occur in multiple waves, affecting different communities at different times with varying levels of severity. We cannot, however, predict the impact that natural or man-made disasters, including the COVID-19 pandemic, may have on the ability of our employees and third-party service providers to continue ordinary business operations and technology functions over near- or longer-term periods.
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Notes to Financial Statements  (continued)
April 30, 2021
Municipal securities risk
Municipal securities are debt obligations generally issued to obtain funds for various public purposes, including general financing for state and local governments, or financing for a specific project or public facility, and include obligations of the governments of the U.S. territories, commonwealths and possessions such as Guam, Puerto Rico and the U.S. Virgin Islands to the extent such obligations are exempt from state and U.S. federal income taxes. The value of municipal securities can be significantly affected by actual or expected political and legislative changes at the federal or state level. Municipal securities may be fully or partially backed by the taxing authority of the local government, by the credit of a private issuer, by the current or anticipated revenues from a specific project or specific assets or by domestic or foreign entities providing credit support, such as letters of credit, guarantees or insurance, and are generally classified into general obligation bonds and special revenue obligations. Because many municipal securities are issued to finance projects in sectors such as education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal market.
Issuers in a state, territory, commonwealth or possession in which the Fund invests may experience significant financial difficulties for various reasons, including as the result of events that cannot be reasonably anticipated or controlled such as economic downturns or similar periods of economic stress, social conflict or unrest, labor disruption and other natural disasters. Such financial difficulties may lead to credit rating downgrades or defaults of such issuers which in turn, could affect the market values and marketability of many or all municipal obligations of issuers in such state, territory, commonwealth or possession. The value of the Fund’s shares will be negatively impacted to the extent it invests in such securities. The Fund’s annual and semiannual reports show the Fund’s investment exposures at a point in time. The risk of investing in the Fund is directly correlated to the Fund’s investment exposures.
Because the Fund invests substantially in municipal securities issued by the state identified in the Fund’s name and political sub-divisions of that state, the Fund will be particularly affected by adverse tax, legislative, regulatory, demographic or political changes as well as changes impacting the state’s financial, economic or other condition and prospects. In addition, because of the relatively small number of issuers of tax-exempt securities in the state, the Fund may invest a higher percentage of assets in a single issuer and, therefore, be more exposed to the risk of loss than a fund that invests more broadly. The value of municipal and other securities owned by the Fund also may be adversely affected by future changes in federal or state income tax laws.
Money market fund investment risk
An investment in a money market fund is not a bank deposit and is not insured or guaranteed by any bank, the FDIC or any other government agency. Certain money market funds float their net asset value while others seek to preserve the value of investments at a stable net asset value (typically, $1.00 per share). An investment in a money market fund, even an investment in a fund seeking to maintain a stable net asset value per share, is not guaranteed and it is possible for the Fund to lose money by investing in these and other types of money market funds. If the liquidity of a money market fund’s portfolio deteriorates below certain levels, the money market fund may suspend redemptions (i.e., impose a redemption gate) and thereby prevent the Fund from selling its investment in the money market fund or impose a fee of up to 2% on amounts the Fund redeems from the money market fund (i.e., impose a liquidity fee). These measures may result in an investment loss or prohibit the Fund from redeeming shares when the Investment Manager would otherwise redeem shares. In addition to the fees and expenses that the Fund directly bears, the Fund indirectly bears the fees and expenses of any money market funds in which it invests, including affiliated money market funds. By investing in a money market fund, the Fund will be exposed to the investment risks of the money market fund in direct proportion of such investment. To the extent the Fund invests in instruments such as derivatives, the Fund may hold investments, which may be significant, in money market fund shares to cover its obligations resulting from the Fund’s investments in derivatives. Money market funds and the securities they invest in are subject to comprehensive regulations. The enactment of new legislation or regulations, as well as changes in interpretation and enforcement of current laws, may affect the manner of operation, performance and/or yield of money market funds.
Shareholder concentration risk
At April 30, 2021, one unaffiliated shareholder of record owned 57.7% of the outstanding shares of the Fund in one or more accounts. The Fund has no knowledge about whether any portion of those shares was owned beneficially. Subscription and redemption activity by concentrated accounts may have a significant effect on the operations of the Fund. In the case of a
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Table of Contents
Notes to Financial Statements  (continued)
April 30, 2021
large redemption, the Fund may be forced to sell investments at inopportune times, including its liquid positions, which may result in Fund losses and the Fund holding a higher percentage of less liquid positions. Large redemptions could result in decreased economies of scale and increased operating expenses for non-redeeming Fund shareholders.
Note 9. Subsequent events
Management has evaluated the events and transactions that have occurred through the date the financial statements were issued. Other than as noted below, there were no items requiring adjustment of the financial statements or additional disclosure.
The Board of Trustees of the Fund has approved a Plan of Liquidation and Termination pursuant to which the Fund was liquidated and terminated. Effective January 11, 2021, the Fund was closed to new investors, and any applicable contingent deferred sales charges were waived on redemptions and exchanges out of the Fund. The Fund liquidated on May 7, 2021, at which time the Fund’s shareholders received a liquidating distribution in an amount equal to the net asset value of their Fund shares.
Note 10. Information regarding pending and settled legal proceedings
Ameriprise Financial and certain of its affiliates have historically been involved in a number of legal, arbitration and regulatory proceedings, including routine litigation, class actions, and governmental actions, concerning matters arising in connection with the conduct of their business activities. Ameriprise Financial believes that the Fund is not currently the subject of, and that neither Ameriprise Financial nor any of its affiliates are the subject of, any pending legal, arbitration or regulatory proceedings that are likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund. Ameriprise Financial is required to make quarterly (10-Q), annual (10-K) and, as necessary, 8-K filings with the Securities and Exchange Commission (SEC) on legal and regulatory matters that relate to Ameriprise Financial and its affiliates. Copies of these filings may be obtained by accessing the SEC website at www.sec.gov.
There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased Fund redemptions, reduced sale of Fund shares or other adverse consequences to the Fund. Further, although we believe proceedings are not likely to have a material adverse effect on the Fund or the ability of Ameriprise Financial or its affiliates to perform under their contracts with the Fund, these proceedings are subject to uncertainties and, as such, we are unable to estimate the possible loss or range of loss that may result. An adverse outcome in one or more of these proceedings could result in adverse judgments, settlements, fines, penalties or other relief that could have a material adverse effect on the consolidated financial condition or results of operations of Ameriprise Financial or one or more of its affiliates that provides services to the Fund.
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Table of Contents
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Columbia Funds Series Trust and Shareholders of Columbia Georgia Intermediate Municipal Bond Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the portfolio of investments, of Columbia Georgia Intermediate Municipal Bond Fund (one of the funds constituting Columbia Funds Series Trust, referred to hereafter as the "Fund") as of April 30, 2021, the related statement of operations for the year ended April 30, 2021, the statement of changes in net assets for each of the two years in the period ended April 30, 2021, including the related notes, and the financial highlights for each of the periods indicated therein (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of April 30, 2021, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended April 30, 2021 and the financial highlights for each of the periods indicated therein in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of April 30, 2021 by correspondence with the broker. We believe that our audits provide a reasonable basis for our opinion.
/s/PricewaterhouseCoopers LLP
Minneapolis, Minnesota
June 22, 2021
We have served as the auditor of one or more investment companies within the Columbia Funds Complex since 1977.
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Table of Contents
 Federal Income Tax Information
(Unaudited)
The Fund hereby designates the following tax attributes for the fiscal year ended April 30, 2021. Shareholders will be notified in early 2022 of the amounts for use in preparing 2021 income tax returns.
Capital
gain
dividend
Exempt-
interest
dividends
$2,675,581 100.00%
Capital gain dividend. The Fund designates as a capital gain dividend the amount reflected above, or if subsequently determined to be different, the net capital gain of such fiscal period.
Exempt-interest dividends. The percentage of net investment income distributed during the fiscal year that qualifies as exempt-interest dividends for federal income tax purposes. A portion of the income may be subject to federal alternative minimum tax.
 TRUSTEES AND OFFICERS
The Board oversees the Fund’s operations and appoints officers who are responsible for day-to-day business decisions based on policies set by the Board. The following table provides basic biographical information about the Fund’s Trustees as of the printing of this report, including their principal occupations during the past five years, although specific titles for individuals may have varied over the period. The year set forth beneath Length of Service in the table below is the year in which the Trustee was first appointed or elected as Trustee to any Fund currently in the Columbia Funds Complex or a predecessor thereof. Under current Board policy, each Trustee generally serves until December 31 of the year such Trustee turns seventy-five (75).
Independent trustees
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
George S. Batejan
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1953
Trustee since 2017 Executive Vice President, Global Head of Technology and Operations, Janus Capital Group, Inc., 2010-2016 170 Former Chairman of the Board, NICSA (National Investment Company Services Association) (Executive Committee, Nominating Committee and Governance Committee), 2014-2016; former Director, Intech Investment Management, 2011-2016; former Board Member, Metro Denver Chamber of Commerce, 2015-2016; former Advisory Board Member, University of Colorado Business School, 2015-2018
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Kathleen Blatz
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2006 Attorney; specializing in arbitration and mediation; Chief Justice, Minnesota Supreme Court, 1998-2006; Associate Justice, Minnesota Supreme Court, 1996-1998; Fourth Judicial District Court Judge, Hennepin County, 1994-1996; Attorney in private practice and public service, 1984-1993; State Representative, Minnesota House of Representatives, 1979-1993, which included service on the Tax and Financial Institutions and Insurance Committees; Member and Interim Chair, Minnesota Sports Facilities Authority, January 2017-July 2017; Interim President and Chief Executive Officer, Blue Cross and Blue Shield of Minnesota (health care insurance), February-July 2018 170 Trustee, BlueCross BlueShield of Minnesota since 2009 (Chair of the Business Development Committee - 2014-2017; Chair of the Governance Committee, 2017-2019); former Member and Chair of the Board, Minnesota Sports Facilities Authority, January 2017-July 2017; Director, Robina Foundation, 2009-2020 (Chair, 2014-2020)
Pamela G. Carlton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2007 President, Springboard — Partners in Cross Cultural Leadership (consulting company) since 2003; Managing Director of US Equity Research, JP Morgan Chase, 1999-2003; Director of US Equity Research, Chase Asset Management, 1996-1999; Co-Director Latin America Research, 1993-1996, COO Global Research, 1992-1996, Co-Director of US Research, 1991-1992, Investment Banker, 1982-1991, Morgan Stanley; Attorney at Cleary Gottlieb Steen & Hamilton LLP, 1980-1982 170 Trustee, New York Presbyterian Hospital Board (Executive Committee and Chair of People Committee) since 1996; Director, DR Bank (Audit Committee) since 2017; Director, Evercore Inc. (Audit Committee, Nominating and Governance Committee) since 2019
Janet Langford Carrig
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1957
Trustee since 1996 Senior Vice President, General Counsel and Corporate Secretary, ConocoPhillips (independent energy company), September 2007-October 2018 168 Director, EQT Corporation (natural gas producer) since 2019; Director, Whiting Petroleum Corporation (independent oil and gas company) since 2020
J. Kevin Connaughton
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2020(a) Member, FINRA National Adjudicatory Council since January 2020; Adjunct Professor of Finance, Bentley University since January 2018; Managing Director and General Manager of Mutual Fund Products, Columbia Management Investment Advisers, LLC, May 2010-February 2015; President, Columbia Funds, 2008-2015; and senior officer of Columbia Funds and affiliated funds, 2003-2015 168 Director, The Autism Project since March 2015; former Member of the Investment Committee, St. Michael’s College, November 2015-February 2020; former Trustee, St. Michael’s College, June 2017-September 2019; former Trustee, New Century Portfolios, January 2015-December 2017
Olive M. Darragh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1962
Trustee since 2020(a) Managing Director of Darragh Inc. (strategy and talent management consulting firm) since 2010; Founder and CEO, Zolio, Inc. (investment management talent identification platform) since 2004; Partner, Tudor Investments, 2004-2010; Senior Partner, McKinsey & Company (consulting), 2001-2004 168 Former Director, University of Edinburgh Business School (Member of US Board); former Director, Boston Public Library Foundation
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Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Patricia M. Flynn
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1950
Trustee since 2004 Trustee Professor of Economics and Management, Bentley University since 1976 (also teaches and conducts research on corporate governance); Dean, McCallum Graduate School of Business, Bentley University, 1992-2002 170 Trustee, MA Taxpayers Foundation since 1997; Board of Governors, Innovation Institute, MA Technology Collaborative, 2010-2019; Board of Directors, The MA Business Roundtable, 2003-2019
Brian J. Gallagher
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1954
Trustee since 2017 Retired; Partner with Deloitte & Touche LLP and its predecessors, 1977-2016 170 Trustee, Catholic Schools Foundation since 2004
Douglas A. Hacker
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1955
Co-Chair since 2021; Chair of CFST I and CFVIT since 2014; Trustee of CFST I and CFVIT since 1996 and CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2021 Independent business executive since May 2006; Executive Vice President – Strategy of United Airlines, December 2002 - May 2006; President of UAL Loyalty Services (airline marketing company), September 2001-December 2002; Executive Vice President and Chief Financial Officer of United Airlines, July 1999-September 2001 168 Director, Spartan Nash Company (food distributor); Director, Aircastle Limited (Chair of Audit Committee) (aircraft leasing); former Director, Nash Finch Company (food distributor), 2005-2013; former Director, SeaCube Container Leasing Ltd. (container leasing), 2010-2013; and former Director, Travelport Worldwide Limited (travel information technology), 2014-2019
Nancy T. Lukitsh
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1956
Trustee since 2011 Senior Vice President, Partner and Director of Marketing, Wellington Management Company, LLP (investment adviser), 1997-2010; Chair, Wellington Management Portfolios (commingled non-U.S. investment pools), 2007 -2010; Director, Wellington Trust Company, NA and other Wellington affiliates, 1997-2010 168  
David M. Moffett
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Trustee since 2011 Retired; Consultant to Bridgewater and Associates 168 Director, CSX Corporation (transportation suppliers); Director, Genworth Financial, Inc. (financial and insurance products and services); Director, PayPal Holdings Inc. (payment and data processing services); Trustee, University of Oklahoma Foundation; former Director, eBay Inc. (online trading community), 2007-2015; and former Director, CIT Bank, CIT Group Inc. (commercial and consumer finance), 2010-2016
28 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Catherine James Paglia
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1952
Co-Chair since 2021; Chair of CFST, CFST II, CFVST II, Columbia ETF Trust I and Columbia ETF Trust II since 2020; Trustee of CFST, CFST II and CFVST II since 2004 and CFST I and CFVIT since 2021 Director, Enterprise Asset Management, Inc. (private real estate and asset management company) since September 1998; Managing Director and Partner, Interlaken Capital, Inc., 1989-1997; Vice President, 1982-1985, Principal, 1985-1987, Managing Director, 1987-1989, Morgan Stanley; Vice President, Investment Banking, 1980-1982, Associate, Investment Banking, 1976-1980, Dean Witter Reynolds, Inc. 170 Director, Valmont Industries, Inc. (irrigation systems manufacturer) since 2012; Trustee, Carleton College (on the Investment Committee); Trustee, Carnegie Endowment for International Peace (on the Investment Committee)
Anthony M. Santomero
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1946
Trustee since 2008 Richard K. Mellon Professor Emeritus of Finance, The Wharton School, University of Pennsylvania, since 2002; Senior Advisor, McKinsey & Company (consulting), 2006-2008; President, Federal Reserve Bank of Philadelphia, 2000-2006; Professor of Finance, The Wharton School, University of Pennsylvania, 1972-2002 170 Trustee, Penn Mutual Life Insurance Company since March 2008; Director, RenaissanceRe Holdings Ltd. since May 2008; former Director, Citigroup Inc. and Citibank, N.A., 2009-2019; former Trustee, BofA Funds Series Trust (11 funds), 2008-2011
Minor M. Shaw
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1947
Trustee since 2003 President, Micco LLC (private investments) since 2011; President, Micco Corp. (family investment business), 1998-2011 170 Director, BlueCross BlueShield of South Carolina (Chair of Compensation Committee) since April 2008; Trustee, Hollingsworth Funds (on the Investment Committee) since 2016 (previously Board Chair from 2016-2019); Former Advisory Board member, Duke Energy Corp., 2016-2020; Chair of the Duke Endowment; Chair of Greenville – Spartanburg Airport Commission; former Trustee, BofA Funds Series Trust (11 funds), 2003-2011; former Director, Piedmont Natural Gas, 2004-2016; former Director, National Association of Corporate Directors, Carolinas Chapter, 2013-2018; Chair, Daniel-Mickel Foundation
Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021
29

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Independent trustees  (continued)
Name,
address,
year of birth
Position held
with the Columbia Funds and
length of service
Principal occupation(s)
during past five years
and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex*
overseen
Other directorships
held by Trustee
during the past
five years
Natalie A. Trunow
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1967
Trustee since 2020(a) Chief Executive Officer, Millennial Portfolio Solutions LLC (asset management and consulting services) since January 2016; Non-executive Member of the Investment Committee, Sarona Asset Management Inc. (private equity firm) since September 2019; Advisor, Horizon Investments (asset management and consulting services) since August 2018; Advisor, Paradigm Asset Management since November 2016; Director of Investments, Casey Family Programs, April 2016-September 2016; Senior Vice President and Chief Investment Officer, Calvert Investments, August 2008 - January 2016; Section Head and Portfolio Manager, General Motors Asset Management, June 1997-August 2008 168 Director, Health Services for Children with Special Needs, Inc.; Director, Consumer Credit Counseling Services (formerly Guidewell Financial Solutions); Independent Director, Investment Committee, Sarona Asset Management
Sandra Yeager
c/o Columbia Management
Investment Advisers, LLC
225 Franklin Street
Mail Drop BX32 05228
Boston, MA 02110
1964
Trustee since 2017 Retired; President and founder, Hanoverian Capital, LLC (SEC registered investment advisor firm), 2008-2016; Managing Director, DuPont Capital, 2006-2008; Managing Director, Morgan Stanley Investment Management, 2004-2006; Senior Vice President, Alliance Bernstein, 1990-2004 170 Director, NAPE Education Foundation, October 2016-October 2020
* The term “Columbia Funds Complex” as used herein includes Columbia Seligman Premium Technology Growth Fund, Tri-Continental Corporation and each series of Columbia Fund Series Trust (CFST), Columbia Funds Series Trust I (CFST I), Columbia Funds Series Trust II (CFST II), Columbia ETF Trust I, Columbia ETF Trust II, Columbia Funds Variable Insurance Trust (CFVIT) and Columbia Funds Variable Series Trust II (CFVST II). Messrs. Batejan, Gallagher, Petersen and Santomero and Mses. Blatz, Carlton, Flynn, Paglia, Shaw and Yeager serve as a director of Columbia Seligman Premium Technology Growth Fund and Tri-Continental Corporation.
(a) J. Kevin Connaughton was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective March 1, 2016. Natalie A. Trunow was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective September 1, 2016. Olive M. Darragh was appointed a consultant to the Independent Trustees of CFST I and CFVIT effective June 10, 2019. Shareholders of the Funds elected Mr. Connaughton and Mses. Darragh and Trunow as Trustees of CFST, CFST I, CFST II, Columbia ETF Trust I, Columbia ETF Trust II, and CFVST II, effective January 1, 2021, and of CFVIT, effective July 1, 2020.
Interested trustee affiliated with Investment Manager*
Name,
address,
year of birth
Position held with the Columbia Funds and length of service Principal occupation(s) during the
past five years and other relevant
professional experience
Number of
Funds in the
Columbia Funds
Complex overseen
Other directorships
held by Trustee
during the past
five years
Christopher O. Petersen
c/o Columbia Management
Investment Advisers, LLC
5228 Ameriprise Financial Center
Minneapolis, MN 55474
1970
Trustee since 2020(a) Vice President and Lead Chief Counsel, Ameriprise Financial, Inc. since January 2015 (previously Vice President and Chief Counsel, January 2010-December 2014); officer of Columbia Funds and affiliated funds since 2007 170 None
* Interested person (as defined under the 1940 Act) by reason of being an officer, director, security holder and/or employee of the Investment Manager or Ameriprise Financial.
(a) Mr. Petersen serves as the Senior Vice President and Assistant Secretary of the Columbia Funds (since 2021).
The Statement of Additional Information has additional information about the Fund’s Board members and is available, without charge, upon request by calling 800.345.6611, visiting columbiathreadneedleus.com/investor/ or contacting your financial intermediary.
30 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
The Board has appointed officers who are responsible for day-to-day business decisions based on policies it has established. The officers serve at the pleasure of the Board. The following table provides basic information about the Officers of the Fund as of the printing of this report, including principal occupations during the past five years, although their specific titles may have varied over the period. In addition to Mr. Petersen, who is Senior Vice President and Assistant Secretary, the Fund’s other officers are:
Fund officers
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Daniel J. Beckman
225 Franklin Street
Boston, MA 02110
1962
President and Principal Executive Officer (2021) Vice President – Head of North America Product, Columbia Management Investment Advisers, LLC (since April 2015); officer of Columbia Funds and affiliated funds since 2020.
Michael G. Clarke
225 Franklin Street
Boston, MA 02110
1969
Chief Financial Officer and Principal Financial Officer (2009) and Senior Vice President (2019) Vice President, Head of North American Operations, and Co-Head of Global Operations, Columbia Management Investment Advisers, LLC, since June 2019 (previously Vice President – Accounting and Tax, May 2010 – May 2019); senior officer of Columbia Funds and affiliated funds since 2002.
Joseph Beranek
5890 Ameriprise
Financial Center
Minneapolis, MN 55474
1965
Treasurer and Chief Accounting Officer (Principal Accounting Officer) (2019) and Principal Financial Officer (2020), CFST, CFST I, CFST II, CFVIT and CFVST II; Assistant Treasurer, Columbia ETF Trust I and Columbia ETF Trust II Vice President – Mutual Fund Accounting and Financial Reporting, Columbia Management Investment Advisers, LLC, since December 2018 and March 2017, respectively (previously Vice President – Pricing and Corporate Actions, May 2010 - March 2017).
Marybeth Pilat
225 Franklin Street
Boston, MA 02110
1968
Treasurer and Chief Accounting Officer (Principal Accounting Officer) and Principal Financial Officer (2020) for Columbia ETF Trust I and Columbia ETF Trust II; Assistant Treasurer, CFST, CFST I, CFST II, CFVIT and CFVST II Vice President – Product Pricing and Administration, Columbia Management Investment Advisers, LLC, since May 2017; Director - Fund Administration, Calvert Investments, August 2015 – March 2017; Vice President - Fund Administration, Legg Mason, May 2015 - July 2015; Vice President - Fund Administration, Columbia Management Investment Advisers, LLC, May 2010 - April 2015.
William F. Truscott
225 Franklin Street
Boston, MA 02110
1960
Senior Vice President (2001) Formerly, Trustee of Columbia Funds Complex until January 1, 2021; Chief Executive Officer, Global Asset Management, Ameriprise Financial, Inc. since September 2012; Chairman of the Board and President, Columbia Management Investment Advisers, LLC since July 2004 and February 2012, respectively; Chairman of the Board and Chief Executive Officer, Columbia Management Investment Distributors, Inc. since November 2008 and February 2012, respectively; Chairman of the Board and Director, Threadneedle Asset Management Holdings, Sàrl since March 2013 and December 2008, respectively; senior executive of various entities affiliated with Columbia Threadneedle.
Paul B. Goucher
485 Lexington Avenue
New York, NY 10017
1968
Senior Vice President (2011) and Assistant Secretary (2008) Senior Vice President and Assistant General Counsel, Ameriprise Financial, Inc. since January 2017 (previously Vice President and Lead Chief Counsel, November 2008 - January 2017 and January 2013 - January 2017, respectively); Vice President, Chief Legal Officer and Assistant Secretary, Columbia Management Investment Advisers, LLC since March 2015 (previously Vice President and Assistant Secretary, May 2010 – March 2015).
Thomas P. McGuire
225 Franklin Street
Boston, MA 02110
1972
Senior Vice President and Chief Compliance Officer (2012) Vice President – Asset Management Compliance, Ameriprise Financial, Inc., since May 2010; Chief Compliance Officer, Columbia Acorn/Wanger Funds since December 2015; Chief Compliance Officer, Ameriprise Certificate Company September 2010 – September 2020.
Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021
31

Table of Contents
TRUSTEES AND OFFICERS  (continued)
 
Fund officers  (continued)
Name,
address and
year of birth
Position and year
first appointed to
position for any Fund
in the Columbia
Funds Complex or a
predecessor thereof
Principal occupation(s) during past five years
Colin Moore
225 Franklin Street
Boston, MA 02110
1958
Senior Vice President (2010) Executive Vice President and Global Chief Investment Officer, Ameriprise Financial, Inc., since July 2013; Executive Vice President and Global Chief Investment Officer, Columbia Management Investment Advisers, LLC since July 2013.
Ryan C. Larrenaga
225 Franklin Street
Boston, MA 02110
1970
Senior Vice President (2017), Chief Legal Officer (2017), and Secretary (2015) Vice President and Chief Counsel, Ameriprise Financial, Inc. since August 2018 (previously Vice President and Group Counsel, August 2011 - August 2018); Chief Legal Officer, Columbia Acorn/Wanger Funds, since September 2020; officer of Columbia Funds and affiliated funds since 2005.
Michael E. DeFao
225 Franklin Street
Boston, MA 02110
1968
Vice President (2011) and Assistant Secretary (2010) Vice President and Chief Counsel, Ameriprise Financial, Inc. since May 2010.
Lyn Kephart-Strong
5228 Ameriprise
Financial Center
Minneapolis, MN 55474
1960
Vice President (2015) President, Columbia Management Investment Services Corp. since October 2014; Vice President & Resolution Officer, Ameriprise Trust Company since August 2009.
 Liquidity Risk Management Program
Pursuant to Rule 22e-4 under the 1940 Act, the Fund has adopted a liquidity risk management program (Program). The Program’s principal objectives include assessing, managing and periodically reviewing the Fund’s liquidity risk. Liquidity risk is defined as the risk that the Fund could not meet redemption requests without significant dilution of remaining investors’ interests in the Fund.
The Board has appointed the Investment Manager as the program administrator for the Fund’s Program. The Investment Manager has delegated oversight of the Program to its Liquidity Risk Management Committee (the Committee). At a board meeting during the fiscal period, the Committee provided the Board with a report addressing the operations of the program and assessing its adequacy and effectiveness of implementation for the period January 1, 2020, through December 31, 2020, including:
the Fund had sufficient liquidity to both meet redemptions and operate effectively on behalf of shareholders;
there were no material changes to the Program during the period;
the implementation of the Program was effective to manage the Fund’s liquidity risk; and
the Program operated adequately during the period.
There can be no assurance that the Program will achieve its objectives in the future. Please refer to the Fund’s prospectus for more information regarding the Fund’s exposure to liquidity risk and other principal risks to which an investment in the Fund may be subject.
32 Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021

Table of Contents
 Results of Meeting of Shareholders
At a Joint Special Meeting of Shareholders held on December 22, 2020, shareholders of Columbia Funds Series Trust elected each of the seventeen nominees for the trustees to the Board of Trustees of Columbia Funds Series Trust, each to hold office until he or she dies, retires, resigns or is removed or, if sooner, until the election and qualification of his or her successor, as follows:
Trustee Votes for Votes withheld Abstentions
George S. Batejan 1,166,986,012 16,252,243 0
Kathleen Blatz 1,167,818,192 15,420,063 0
Pamela G. Carlton 1,167,761,255 15,477,001 0
Janet Langford Carrig 1,169,443,247 13,795,008 0
J. Kevin Connaughton 1,168,554,731 14,683,525 0
Olive M. Darragh 1,169,004,224 14,234,032 0
Patricia M. Flynn 1,168,110,224 15,128,031 0
Brian J. Gallagher 1,166,931,187 16,307,068 0
Douglas A. Hacker 1,168,253,721 14,984,535 0
Nancy T. Lukitsh 1,169,128,202 14,110,053 0
David M. Moffett 1,167,387,510 15,850,745 0
Catherine James Paglia 1,167,159,143 16,079,112 0
Anthony M. Santomero 1,166,760,857 16,477,398 0
Minor M. Shaw 1,165,931,084 17,307,171 0
Natalie A. Trunow 1,168,907,601 14,330,655 0
Sandra Yeager 1,167,549,796 15,688,459 0
Christopher O. Petersen 1,167,593,463 15,644,793 0
Columbia Georgia Intermediate Municipal Bond Fund  | Annual Report 2021
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Columbia Georgia Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/

Table of Contents
Columbia Georgia Intermediate Municipal Bond Fund
P.O. Box 219104
Kansas City, MO 64121-9104
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.
columbiathreadneedleus.com/investor/

Table of Contents
Columbia Georgia Intermediate Municipal Bond Fund
  
Please read and consider the investment objectives, risks, charges and expenses for any fund carefully before investing. For a prospectus and summary prospectus, which contains this and other important information about the Fund, go to
columbiathreadneedleus.com/investor/. The Fund is distributed by Columbia Management Investment Distributors, Inc., member FINRA, and managed by Columbia Management Investment Advisers, LLC.
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of companies. All rights reserved.
© 2021 Columbia Management Investment Advisers, LLC.

Item 2. Code of Ethics.

(a)The registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party.

(b)During the period covered by this report, there were not any amendments to a provision of the code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item.

(c)During the period covered by this report, there were no waivers, including any implicit waivers, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party that relates to one or more of the items set forth in paragraph (b) of this Item.

Item 3. Audit Committee Financial Expert.

The registrant's Board of Trustees has determined that David M. Moffett, Brian J. Gallagher, J. Kevin Connaughton, and Sandra L. Yeager, each of whom are members of the registrant's Board of Trustees and Audit Committee, each qualify as an audit committee financial expert. Mr. Moffett, Mr. Gallagher, Mr. Connaughton, and Ms. Yeager are each independent trustees, as defined in paragraph (a)(2) of this item's instructions.

Item 4. Principal Accountant Fees and Services.

Fee information below is disclosed for the five series of the registrant whose reports to stockholders are included in this annual filing. Fiscal Years 2020 and 2021 also includes fees for two funds that liquidated during the period.

(a)Audit Fees. Aggregate Audit Fees billed by the principal accountant for professional services rendered during the fiscal years ended April 30, 2021 and April 30, 2020 are approximately as follows:

20212020

$217,000             $209,000

Audit Fees include amounts related to the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years.

 

(b)Audit-Related Fees. Aggregate Audit-Related Fees billed to the registrant by the principal accountant for professional services rendered during the fiscal years ended April 30, 2021 and April 30, 2020 are approximately as follows:

2021

2020

$0

$0

Audit-Related Fees, if any, include amounts for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported in Audit Fees above.

During the fiscal years ended April 30, 2021 and April 30, 2020, there were no Audit- Related Fees billed by the registrant's principal accountant to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser) and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for an engagement that related directly to the operations and financial reporting of the registrant.

(c)Tax Fees. Aggregate Tax Fees billed by the principal accountant to the registrant for professional services rendered during the fiscal years ended April 30, 2021 and April 30,

2020 are approximately as follows:

2021

2020

$0

$0

Tax Fees, if any, include amounts for the review of annual tax returns, the review of required shareholder distribution calculations and typically include amounts for professional services by the principal accountant for tax compliance, tax advice and tax planning.

During the fiscal years ended April 30, 2021 and April 30, 2020, there were no Tax Fees billed by the registrant's principal accountant to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser) and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for an engagement that related directly to the operations and financial reporting of the registrant.

(d)All Other Fees. Aggregate All Other Fees billed by the principal accountant to the registrant for professional services rendered during the fiscal years ended April 30, 2021 and April 30, 2020 are approximately as follows:

2021

2020

$0

$0

 

All Other Fees, if any, include amounts for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) above.

Aggregate All Other Fees billed by the registrant's principal accountant to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser) and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for an engagement that related directly to the operations and financial reporting of the registrant during the fiscal years ended April 30,

2021 and April 30, 2020 are approximately as follows:

20212020

$520,000            $520,000

In fiscal years 2021 and 2020, All Other Fees primarily consists of fees billed for internal control examinations of the registrant's transfer agent and investment adviser.

(e)(1) Audit Committee Pre-Approval Policies and Procedures

The registrant's Audit Committee is required to pre-approve the engagement of the registrant's independent auditors to provide audit and non-audit services to the registrant and non-audit services to its investment adviser (excluding any sub-adviser whose role is primarily portfolio management and is sub-contracted or overseen by another investment adviser (the "Adviser") or any entity controlling, controlled by or under common control with the Adviser that provides ongoing services to the Fund (a "Control Affiliate") if the engagement relates directly to the operations and financial reporting of the registrant.

The Audit Committee has adopted a Policy for Engagement of Independent Auditors for Audit and Non-Audit Services (the "Policy"). The Policy sets forth the understanding of the Audit Committee regarding the engagement of the registrant's independent accountants to provide (i) audit and permissible audit-related, tax and other services to the registrant ("Fund Services"); (ii) non-audit services to the registrant's Adviser and any Control Affiliates, that relates directly to the operations and financial reporting of a Fund ("Fund-related Adviser Services"); and (iii) certain other audit and non-audit services to the registrant's Adviser and its Control Affiliates. A service will require specific pre-approval by the Audit Committee if it is to be provided by the Fund's independent auditor; provided, however, that pre-approval of non-audit services to the Fund, the Adviser or Control Affiliates may be waived if certain de minimis requirements set forth in the SEC's rules are met.

Under the Policy, the Audit Committee may delegate pre-approval authority to any pre- designated member or members who are independent board members. The member(s) to whom such authority is delegated must report, for informational purposes only, any pre- approval decisions to the Audit Committee at its next regular meeting. The Audit Committee's responsibilities with respect to the pre-approval of services performed by the independent auditor may not be delegated to management.

 

On an annual basis, at a regularly scheduled Audit Committee meeting, the Fund's Treasurer or other Fund officer shall submit to the Audit Committee a schedule of the types of Fund Services and Fund-related Adviser Services that are subject to specific pre- approval. This schedule will provide a description of each type of service that is subject to specific pre-approval, along with total projected fees for each service. The pre- approval will generally cover a one-year period. The Audit Committee will review and approve the types of services and the projected fees for the next one-year period and may add to, or subtract from, the list of pre-approved services from time to time, based on subsequent determinations. This specific approval acknowledges that the Audit Committee is in agreement with the specific types of services that the independent auditor will be permitted to perform and the projected fees for each service.

The Fund's Treasurer or other Fund officer shall report to the Audit Committee at each of its regular meetings regarding all Fund Services or Fund-related Adviser Services provided since the last such report was rendered, including a description of the services, by category, with forecasted fees for the annual reporting period, proposed changes requiring specific pre-approval and a description of services provided by the independent auditor, by category, with actual fees during the current reporting period.

*****

(e)(2) None, or 0%, of the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund or affiliated entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied).

(f)Not applicable.

(g)The aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for the fiscal years ended April 30, 2021 and April 30,

2020 are approximately as follows:

20212020

$520,000             $520,000

(h)The registrant's Audit Committee of the Board of Directors has considered whether the provision of non-audit services that were rendered to the registrant's adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to

 

paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X, is compatible with maintaining the principal accountant's independence.

Item 5. Audit Committee of Listed Registrants.

Not applicable.

Item 6. Investments

(a)The registrant's "Schedule I – Investments in securities of unaffiliated issuers" (as set forth in 17 CFR 210.12-12) is included in Item 1 of this Form N-CSR.

(b)Not applicable.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable.

Item 8. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable.

Item 10. Submission of Matters to a Vote of Security Holders.

There were no material changes to the procedures by which shareholders may recommend nominees to the registrant's board of directors.

Item 11. Controls and Procedures.

(a)The registrant's principal executive officer and principal financial officer, based on their evaluation of the registrant's disclosure controls and procedures as of a date within 90 days of the filing of this report, have concluded that such controls and procedures are adequately designed to ensure that information required to be disclosed by the registrant in Form N-CSR is accumulated and communicated to the registrant's management, including the principal executive officer and principal financial officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

(b)There was no change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected,

 

or is reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 12. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies

Not applicable.

Item 13. Exhibits.

(a)(1) Code of ethics required to be disclosed under Item 2 of Form N-CSR attached hereto as Exhibit 99.CODE ETH.

(a)(2) Certifications pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) attached hereto as Exhibit 99.CERT.

(b)Certification pursuant to Rule 30a-2(b) under the Investment Company Act of 1940(17 CFR 270.30a-2(b)) attached hereto as Exhibit 99.906CERT.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly

authorized.

 

 

(registrant)

 

Columbia Funds Series Trust

 

By (Signature and Title)

/s/ Daniel J. Beckman

 

 

 

 

Daniel J. Beckman, President and Principal Executive Officer

 

Date

 

June 22, 2021

 

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)

/s/ Daniel J. Beckman

 

 

Daniel J. Beckman, President and Principal Executive Officer

Date

 

June 22, 2021

 

By (Signature and Title)

/s/ Michael G. Clarke

 

 

Michael G. Clarke, Chief Financial Officer, Principal Financial Officer

 

 

and Senior Vice President

Date

 

June 22, 2021

 

By (Signature and Title)

/s/ Joseph Beranek

 

 

Joseph Beranek, Treasurer, Chief Accounting Officer and Principal

 

 

Financial Officer

Date

 

June 22, 2021

 


Fund Policy - Code of Ethics for Principal Executive and Senior Financial Officers

 

COLUMBIA FUNDS

 

 

 

Applicable Regulatory Authority

 

Section 406 of the Sarbanes-Oxley Act of 2002;

 

 

Item 2 of Form N-CSR

Related Policies

 

Overview and Implementation of Compliance Program

 

 

Policy

Requires Annual Board Approval

 

No but Covered Officers Must provide annual

 

 

certification

Last Reviewed by AMC

 

June 2020

Overview and Statement

 

 

Item 2 of Form N-CSR, the form used by registered management investment companies to file certified annual and semi-annual shareholder reports, requires a registered management investment company to disclose:

Whether it has adopted a code of ethics that applies to the investment company's principal executive officer and senior financial officers and, if it has not adopted such a code of ethics, why it has not done so; and

Any amendments to, or waivers from, the code of ethics relating to such officers.

The Board of each Fund has adopted the following Code of Ethics for Principle Executive and Senior Financial Officers (the "Code"), which sets forth the ethical standards to which the Fund holds its principal executive officer and each of its senior financial officers.

This Code should be read and interpreted in conjunction with the Overview and Implementation of Compliance Program Policy.

Policy The Board of each Fund has adopted the Code in order to comply with applicable regulatory requirements as outlined below:

I.Covered Officers/Purpose of the Code

This Code applies to the Fund's Principal Executive Officer, Principal Financial Officer, and Principal Accounting Officer or Controller (the "Covered Officers") for the purpose of promoting:

Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

Full, fair, accurate, timely and understandable disclosure in reports and documents that the Fund files with, or submits to, the SEC, and in other public communications made by the Fund;

Compliance with applicable laws and governmental rules and regulations;

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

The prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

Accountability for adherence to the Code.

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual or apparent conflicts of interest.

II.Administration of the Code

The Board has designated an individual to be primarily responsible for the administration of the Code (the "Code Officer"). In the absence of the Code Officer, his or her designee shall serve as the Code Officer, but only on a temporary basis.

The Board has designated a person who meets the definition of a Chief Legal Officer (the "CLO") for purposes of the Sarbanes-Oxley Act of 2002 and the rules promulgated thereunder as the Fund's CLO. The CLO of the Fund shall assist the Fund's Code

Officer in administration of this Code. The Code Officer, in consultation with the CLO, shall be responsible for applying this Code to specific situations (in consultation with Fund counsel, where appropriate) and has the authority to interpret this Code in any particular situation.

III.Managing Conflicts of Interest

A "conflict of interest" occurs when a Covered Officer's personal interest interferes with the interests of, or his or her service to, the Fund. For example, a conflict of interest would arise if a Covered Officer, or a member of his or her family, receives improper personal benefits as a result of the Covered Officer's position with the Fund. Certain provisions in the 1940 Act and the rules and regulations thereunder and the Advisers Act and the rules and regulations thereunder govern certain conflicts of interest that arise out of the relationships between Covered Officers and the Fund. If such conflicts are addressed in conformity with applicable provisions of the 1940 Act and the Advisers Act, they will be deemed to have been handled ethically. The Fund's and its Adviser's compliance programs and procedures are designed to prevent, or identify and correct, violations of those provisions. This Code does not, and is not intended to, repeat or replace those programs and procedures, and conduct that is consistent with such programs and procedures falls outside of the parameters of this Code.

Although they do not typically present an opportunity for improper personal benefit, conflicts may arise from, or as a result of, the contractual relationships between the Fund and, as applicable, its Adviser, administrator, principal underwriter, pricing and bookkeeping agent and/or transfer agent (each, a "Primary Service Provider") of which the Covered Officers are also officers or employees. As a result, this Code recognizes that the Covered Officers will, in the normal course of their duties (whether formally for the Fund or for a Primary Service Provider, or for both), be involved in establishing policies and implementing decisions that will have different effects on the Primary

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

Service Providers and the Fund. The participation of the Covered Officers in such activities is inherent in the contractual relationships between the Fund and the Primary Service Providers and is consistent with the performance by the Covered Officers of their duties as officers of the Fund. If such conflicts are addressed in conformity with applicable provisions of the 1940 Act and the Advisers Act, they will be deemed to have been handled ethically. In addition, it is recognized by the Board of the Fund that the Covered Officers also may be officers or employees of one or more other investment companies or organizations affiliated with the sponsor of the Fund covered by other similar codes and that the codes of ethics of those other investment companies or organizations will apply to the Covered Officers acting in such capacities for such other investment companies.

This Code covers general conflicts of interest and other issues applicable to the Funds under the Sarbanes-Oxley Act of 2002. The overarching principle is that the personal interest of a Covered Officer should not be placed improperly before the interests of the Fund. Certain examples of such conflicts of interest follow.

Each Covered Officer must:

Not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting by the Fund whereby the Covered Officer, or a member of his or her family, would knowingly benefit personally to the detriment of the Fund;

Not knowingly cause the Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer, or a member of his or her family, rather than the benefit of the Fund;

Not use material non-public knowledge of portfolio transactions made or contemplated for the Fund to trade personally or cause others to trade personally in contemplation of the market effect of such transactions; and

Report at least annually (or more frequently, as appropriate) known affiliations or other relationships that may give rise to conflicts of interest with respect to the Fund.

If a Covered Officer believes that he or she has a potential conflict of interest that is likely to materially compromise his or her objectivity or his or her ability to perform the duties of his or her role as a Covered Officer, including a potential conflict of interest that arises out of his or her responsibilities as an officer or employee of one or more Primary Service Providers or other funds, he or she should consult with the Code Officer, the CLO, the Fund's outside counsel, or counsel to the Independent Board Members, as appropriate.

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

Examples of potential conflicts of interest that may materially compromise objectivity or ability to perform the duties of a Covered Officer and which the Covered Officer should consider discussing with the Code Officer or other appropriate person include:

Service as a director on the board of a public or private company or service as a public official;

The receipt of a non-de minimus gift when the gift is in relation to doing business directly or indirectly with the Fund;

The receipt of entertainment from any company with which the Fund has current or prospective business dealings, unless such entertainment is business-related, reasonable in cost, appropriate as to time and place, and not so frequent as to raise any question of impropriety;

An ownership interest in, or any consulting or employment relationship with, any of the Fund's service providers, other than the Primary Service Providers or any affiliated person thereof; and

A direct or indirect material financial interest in commissions, transaction charges or spreads paid by the Fund for effecting portfolio transactions or for selling or redeeming shares other than an interest arising from the Covered Officer's employment, such as compensation or equity ownership.

IV. Disclosure and Compliance

It is the responsibility of each Covered Officer:

To familiarize himself or herself with the disclosure requirements generally applicable to the Fund, as well as the business and financial operations of the Fund;

To not knowingly misrepresent, and to not knowingly cause others to misrepresent, facts about the Fund to others, whether within or outside the Fund, including to the Fund's Board, Legal Counsel, Independent Legal Counsel and auditors, and to governmental regulators and self-regulatory organizations;

To the extent appropriate within his or her area of responsibility, consult with other officers and employees of the Fund and the Primary Service Providers with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Fund files with, or submits to, the SEC and in other public communications made by the Fund; and

To adhere to and, within his or her area of responsibility, promote compliance with the standards and restrictions imposed by applicable laws, rules and regulations.

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

V.Reporting and Accountability by Covered Officers Each Covered Officer must:

Upon adoption of the Code or becoming a Covered Officer, acknowledge in writing to the Fund's Board that he or she has received, read and understands the Code, using the form attached as Appendix A hereto;

Annually thereafter acknowledge in writing to the Fund's Board that he or she has received and read the Code and believes that he or she has complied with the requirements of the Code, using the form attached as Appendix B hereto;

Not retaliate against any employee or Covered Officer for reports of potential violations that are made in good faith; and

Notify the Code Officer promptly if he or she knows of any violation, or of conduct that reasonably could be expected to be or result in a violation, of this Code. Failure to do so is a violation of this Code.

The Fund will follow the policy set forth below in investigating and enforcing this Code:

The Code Officer will endeavor to take all appropriate action to investigate any potential violation reported to him or her;

If, after such investigation, the Code Officer believes that no violation has occurred, the Code Officer will so notify the person(s) reporting the potential violation, and no further action is required;

Any matter that the Code Officer, upon consultation with the CLO, believes is a violation will be reported by the Code Officer or the CLO to the Fund's Audit

Committee;

The Fund's Audit Committee will be responsible for granting waivers, as appropriate; and

This Code and any changes to or waivers of the Code will, to the extent required, be disclosed as provided by SEC rules.

VI. Other Policies

This Code shall be the sole code of ethics adopted by the Fund for the purposes of Section 406 of the Sarbanes-Oxley Act of 2002 and the rules and forms applicable to registered management investment companies thereunder. Insofar as other policies or procedures of the Fund or the Fund's Primary Service Providers govern or purport to govern the behavior or activities of the Covered Officers who are subject to this Code, they are superseded by this Code to the extent that they conflict with the provisions of this Code. The Fund's and its Adviser's and principal underwriter's codes of ethics under Rule 17j-1 under the 1940 Act and the more detailed policies and procedures of the

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

Primary Service Providers as set forth in their respect Compliance Manuals are separate requirements applicable to the Covered Officers and are not part of this Code.

VII. Disclosure of Amendments to the Code

Any amendments will, to the extent required, be disclosed in accordance with law.

VIII. Confidentiality

All reports and records prepared or maintained pursuant to this Code will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code or upon advice of counsel, such reports and records shall not be disclosed to anyone other than the Fund's Board, the Covered Officers, the Code Officer, the CLO, the Fund's Primary Service Providers and their affiliates, and outside audit firms, legal counsel to the Fund and legal counsel to the Independent Board Members.

IX. Internal Use

The Code is intended solely for the internal use by the Fund and does not constitute an admission, by or on behalf of the Fund, as to any fact, circumstance, or legal conclusion.

Reporting Requirements

Each Covered Officer must annually acknowledge in writing to the Fund's Board that he or she has received and read the Code and believes that he or she has complied with the requirements of the Code, using the form attached as Appendix II hereto.

The Code Officer or CLO shall report to the Fund's Audit Committee any violations of, or material issues arising under, this Code.

If the Audit Committee concurs that a violation has occurred, it will inform and make a recommendation to the Fund's Board, which will consider appropriate action, which may include review of, and appropriate modifications to: Applicable policies and procedures; Notification to the appropriate personnel of the Fund's Primary Service Providers or their boards; A recommendation to censure, suspend or dismiss the Covered Officer; or Referral of the matter to the appropriate authorities for civil action or criminal prosecution.

All material amendments to this Code must be in writing and approved or ratified by the Fund's Board, including a majority of the Independent Board Members.

The Code Officer, in conjunction with the CLO, shall be responsible for administration of this Code and for adopting procedures to ensure compliance with the requirements set forth herein.

Any issues that arise under this policy should be communicated to an employee's immediate supervisor, and appropriately escalated to AMC. Additionally, AMC will escalate any compliance issues relating to this Code to the Fund CCO and, if warranted, the appropriate Fund Board.

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Fund Policy: Code of Ethics for Principal Executive and Senior Financial Officers

Monitoring/Oversight/Escalation

The Code Officer shall be responsible for oversight of compliance with this Code by the Covered Officers. AMC and Ameriprise Risk & Control Services may perform periodic reviews and assessments of various lines of business, including their compliance with this Code.

Recordkeeping

All records must be maintained for at least seven years, the first three in the appropriate Ameriprise Financial, Inc. management office. The following records will be maintained to evidence compliance with this Code: (1) a copy of the information or materials supplied to the Audit Committee or the Board: (i) that provided the basis for any amendment or waiver to this Code; and (ii) relating to any violation of the Code and sanctions imposed for such violation, together with a written record of the approval or action taken by the Audit Committee and/or Board; (2) a copy of the policy and any amendments; and (3) a list of Covered Officers and reporting by Covered Officers.

This document is current as of the last review date but subject to change thereafter. Please consult the online version to verify that this Fund Policy has not been updated or otherwise changed. This Fund Policy is the property of the Funds and must not be provided to any external party without express prior consent from the Fund CCO.

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Appendix A

INITIAL ACKNOWLEDGEMENT

I acknowledge that I have received and read a copy of the Code of Ethics for Principal Executive and Senior Financial Officers (the "Code") and that I understand it. I further acknowledge that I am responsible for understanding and complying with the policies set forth in the Code during my tenure as a Covered Officer, as defined in the Code.

I have set forth below (and on attached sheets of paper, if necessary) all known affiliations or other relationships that may give rise to conflicts of interest for me with respect to the Fund.

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

I also acknowledge my responsibility to report any known violation of the Code to the Code Officer, the CLO, the Fund's outside counsel, or counsel to the Independent Board Members, all as defined in this Code. I further acknowledge that the policies contained in the Code are not intended to create any contractual rights or obligations, express or implied. I also understand that, consistent with applicable law, the Fund has the right to amend, interpret, modify or withdraw any of the provisions of the Code at any time in its sole discretion, with or without notice.

Covered Officer Name and Title: ________________________________________________

(please print)

______________________________________________________________________________

Signature

Date

Please return this completed form to the CLO (_______) within one week from the date of your review of these documents. Thank you!

Page 8

Appendix B

ANNUAL ACKNOWLEDGEMENT

I acknowledge that I have received and read a copy of the Code of Ethics for Principal Executive and Senior Financial Officers (the "Code") and that I understand it. I further acknowledge that I am responsible for understanding and complying with the policies set forth in the Code during my tenure as a Covered Officer, as defined in the Code.

I also acknowledge that I believe that I have fully complied with the terms and provisions of the Code during the period of time since the most recent Initial or Annual Acknowledgement provided by me except as described below.

______________________________________________________________

______________________________________________________________

______________________________________________________________

I have set forth below (and on attached sheets of paper, if necessary) all known affiliations or other relationships that may give rise to conflicts of interest for me with respect to the Fund.1

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

I further acknowledge that the policies contained in the Code are not intended to create any contractual rights or obligations, express or implied. I also understand that, consistent with applicable law, the Fund has the right to amend, interpret, modify or withdraw any of the provisions of the Code at any time in its sole discretion, with or without notice.

Covered Officer Name and Title: ________________________________________________

(please print)

______________________________________________________________________________

Signature

Date

Please return this completed form to the CLO (_______) within one week from the date of your receipt of a request to complete and return it. Thank you!

1It is acceptable to refer to affiliations and other relationships previously disclosed in prior Initial or Annual Acknowledgements without setting forth such affiliations and relationships again.

Page 9


I, Daniel J. Beckman, certify that:

1.I have reviewed this report on Form N-CSR of Columbia Funds Series Trust;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

(d)disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 22, 2021

/s/ Daniel J. Beckman

 

 

Daniel J. Beckman, President and Principal

 

Executive Officer

I, Michael G. Clarke, certify that:

1.I have reviewed this report on Form N-CSR of Columbia Funds Series Trust;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

(d)disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 22, 2021

 

/s/ Michael G. Clarke

 

 

Michael G. Clarke, Chief Financial Officer,

 

Principal Financial Officer and Senior Vice

 

President

I, Joseph Beranek, certify that:

1.I have reviewed this report on Form N-CSR of Columbia Funds Series Trust;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control

 

over financial reporting to be designed under our supervision, to provide reasonable

 

assurance regarding the reliability of financial reporting and the preparation of financial

 

statements for external purposes in accordance with generally accepted accounting

 

principles;

(c )

evaluated the effectiveness of the registrant's disclosure controls and procedures and

 

presented in this report our conclusions about the effectiveness of the disclosure controls

 

and procedures, as of a date within 90 days prior to the filing date of this report based on

 

such evaluation; and

(d)disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 22, 2021

 

/s/ Joseph Beranek

 

 

Joseph Beranek, Treasurer, Chief Accounting

 

Officer and Principal Financial Officer


CERTIFICATION PURSUANT TO SECTION 906 OF

THE SARBANES-OXLEY ACT OF 2002

In connection with the Certified Shareholder Report of Columbia Funds Series Trust (the "Trust") on Form N-CSR for the period ending April 30, 2021 as filed with the Securities and Exchange Commission on the date hereof ("the Report"), the undersigned hereby certifies that, to his knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Trust.

Date:

June 22, 2021

/s/ Daniel J. Beckman

 

 

 

Daniel J. Beckman, President and Principal

 

 

Executive Officer

Date:

June 22, 2021

/s/ Michael G. Clarke

 

 

Michael G. Clarke, Chief Financial Officer,

 

 

Principal Financial Officer and Senior Vice

 

 

President

Date:

June 22, 2021

/s/ Joseph Beranek

 

 

Joseph Beranek, Treasurer, Chief Accounting

 

 

Officer and Principal Financial Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission (the "Commission") or its staff upon request.

This certification is being furnished to the Commission solely pursuant to 18 U.S.C. §1350 and is not being filed as part of the Form N-CSR with the Commission.