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Wells Fargo

Small Company Growth Fund

Beginning on January 1, 2021, as permitted by new regulations adopted by the Securities and Exchange Commission, paper copies of the Wells Fargo Funds’ annual and semi-annual shareholder reports issued after this date will no longer be sent by mail, unless you specifically request paper copies of the reports. Instead, the reports will be made available on the Funds’ website, and you will be notified by mail each time a report is posted and provided with a website address to access the report.

If you 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, if you are a direct investor, by calling 1-800-222-8222 or by enrolling at wellsfargo.com/advantagedelivery.

You may elect to receive all future reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue to receive paper copies of your shareholder reports; if you invest directly with the Fund, you can call 1-800-222-8222. Your election to receive reports in paper will apply to all Wells Fargo Funds held in your account with your financial intermediary or, if you are a direct investor, to all Wells Fargo Funds that you hold.

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The views expressed and any forward-looking statements are as of May 31, 2020, unless otherwise noted, and are those of the Fund managers and/or Wells Fargo Asset Management. Discussions of individual securities, or the markets generally, or any Wells Fargo Fund are not intended as individual recommendations. Future events or results may vary significantly from those expressed in any forward-looking statements. The views expressed are subject to change at any time in response to changing circumstances in the market. Wells Fargo Asset Management and the Fund disclaim any obligation to publicly update or revise any views expressed or forward-looking statements.

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Letter to shareholders (unaudited)

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Letter to shareholders (unaudited)

many feared a crackdown in Hong Kong as protestors sustained their calls for reform, and Prime Minister Boris Johnson planned to suspend the British Parliament as Brexit’s deadline neared.

In the U.S., the Fed cut interest rates a second time in September. U.S. manufacturing data disappointed investors. The U.S. Congress announced it would pursue an impeachment investigation of President Trump. Meanwhile, the Brexit impasse showed no signs of resolution. Officials in China said that hitting the country’s economic growth goals for the year would be difficult considering the weight of tariffs and trade restrictions. Although the S&P 500 Index finished the third quarter with the best year-to-date returns in more than 20 years, concerns about future returns remained.

The fourth quarter of 2019 started on a strong note, with U.S.-China trade tensions relaxing in October along with renewed optimism for a U.K. Brexit deal and positive macroeconomic data. The initial estimate of U.S. third-quarter gross domestic product growth was a resilient 1.9% annualized rate, while the U.S. unemployment rate fell to a 50-year low of 3.5% in September. However, despite resilience among U.S. consumers, business confidence declined and manufacturing activity contracted. Concerned with a potential economic slowdown, the Fed lowered interest rates another quarter point in late October—its third rate cut in four months. This helped push the S&P 500 Index to a new all-time high while emerging market equities rallied and global bonds declined overall, reflecting a broad pickup in risk appetite.

Equity markets continued to rally in November despite ongoing geopolitical risks. Hopes for a U.S.-China trade deal buoyed investor confidence. U.S. business sentiment improved slightly, and manufacturing and services activity picked up. While consumer confidence and purchasing manager activity rose in the eurozone, China reported weakening manufacturing and consumer data. Bond yields rose marginally, leading to slightly negative returns for global government and investment-grade corporate bonds.

Financial markets ended 2019 with a boost from the U.S. and China accord on a Phase One trade deal. That, along with the landslide win by the pro-Brexit U.K. Conservative Party in a national election and ongoing central bank support, gave investors greater confidence. U.S. economic indicators were generally positive, with the exception of manufacturing activity and business confidence. Consumer confidence was resilient, fed by a robust labor market, tame inflation, and lower interest rates, which boosted housing affordability and stimulated homebuyer activity. The impeachment of U.S. President Donald Trump had little impact on markets. Meanwhile, slowing Chinese economic activity, partly attributable to the trade war, led to further government stimulus at year-end through lower reserve ratios, allowing banks to lend more money.

The year-end rally continued in early January 2020. However, capital market volatility picked up sharply in late January on concerns over the potential impact of the coronavirus on the global economy and stock markets. With sentiment somewhat souring, perceived safe havens did well in January. The U.S. dollar and Japanese yen both rose, and government bonds outperformed equities. While the S&P 500 Index held its ground, emerging market equities tumbled, including those in Asia.

In February, the coronavirus became the major market focus. Fears of the virus’s impact on global growth led to expectations of increased global central bank monetary policy support. That led the 10-year U.S. Treasury yield to fall to an all-time low of 1.1% by the end of the month. Although equity markets initially shrugged off concerns about the outbreak, focusing instead on strong fourth-quarter earnings and improving business confidence in January, market sentiment turned sharply lower toward month-end and the S&P 500 Index lost 8.2% for the month. Oil prices tumbled as Russia and the Organization of the Petroleum Exporting Countries compounded a major decline in oil demand with a brutal price war, partly aimed at dissuading further U.S. shale production. As a result, the price of West Texas Intermediate crude oil fell 13% in February.

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Letter to shareholders (unaudited)

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Performance highlights (unaudited)

The Fund is currently closed to most new investors.¹

Investment objective

The Fund seeks long-term capital appreciation.

Manager

Wells Fargo Funds Management, LLC

Subadviser for the affiliated master portfolio²

Peregrine Capital Management, LLC

Portfolio managers

William A. Grierson, CFA^®‡

Daniel J. Hagen, CFA^®‡

Paul E. von Kuster, CFA^®‡

Average annual total returns (%) as of May 31, 2020

Figures quoted represent past performance, which is no guarantee of future results, and do not reflect taxes that a shareholder may pay on an investment in a fund. Investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Performance shown without sales charges would be lower if sales charges were reflected. Current performance may be lower or higher than the performance data quoted, which assumes the reinvestment of dividends and capital gains. Current month-end performance is available on the Fund’s website, wfam.com.

Index returns do not include transaction costs associated with buying and selling securities, any mutual fund fees or expenses, or any taxes. It is not possible to invest directly in an index.

For Class A shares, the maximum front-end sales charge is 5.75%. For Class C shares, the maximum contingent deferred sales charge is 1.00%. Performance including a contingent deferred sales charge assumes the sales charge for the corresponding time period. Class R6, Administrator Class, and Institutional Class shares are sold without a front-end sales charge or contingent deferred sales charge.

Stock values fluctuate in response to the activities of individual companies and general market and economic conditions. Smaller-company stocks tend to be more volatile and less liquid than those of larger companies. Certain investment strategies tend to increase the total risk of an investment (relative to the broader market). The Fund is exposed to foreign investment risk. Consult the Fund’s prospectus for additional information on these and other risks.

Please see footnotes on page 7.

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Performance highlights (unaudited)

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Performance highlights (unaudited)

Real estate and IT contributed while consumer discretionary detracted.

Consumer discretionary was the largest detractor from performance for the fiscal year with much of the negative performance impact caused by the current coronavirus pandemic. Pervasive store closures and reduced consumer foot traffic related to the pandemic was a significant headwind to apparel retailers G-III Apparel Group and The Children’s Place, and we exited both stocks. Casino operator Eldorado Resorts was also weak in the period as the company was forced to temporarily shutter its casino properties while the longer-term uncertainty surrounding gaming trends caused by the pandemic called into question the company’s ability to complete its pending transformative acquisition of Caesars Entertainment, and we sold our position in Eldorado Resorts. The financials sector also detracted from fund performance in the period. Weakness was driven by our overweight position in the underperforming sector as well as weakness in private mortgage insurer Essent Group and commercial property and casualty insurer Argo Group International.

Please see footnotes on page 7.

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Performance highlights (unaudited)

Sector allocation as of May 31, 20209

Our team has employed the same bottom-up style for more than 40 years and we have endured similar periods of extreme market volatility, none of which have proved to be anything more than transient. Our investment philosophy centers on identifying small, rapidly growing companies with underappreciated opportunities relative to their valuations. However, during the Fund’s fiscal year, valuations mattered little as a significant increase in recessionary fears caused investors to crowd into low volatility and high-momentum stocks regardless of valuation excesses. These stocks were afforded significant valuation premiums as they were widely viewed as defensive, with secular growth opportunities able to overwhelm macro level concerns. This persistent lack of valuation sensitivity in the market, while not sustainable, created a significant headwind to our valuation sensitive style during the period. We firmly believe valuations will once again matter, providing a more conducive environment for our valuation sensitive philosophy with the potential to drive strong future outperformance for the Fund.

Please see footnotes on page 7.

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Fund expenses (unaudited)

As a shareholder of the Fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and contingent deferred sales charges (if any) on redemptions and (2) ongoing costs, including management fees, distribution (12b-1) and/or shareholder servicing fees, and other Fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds.

The example is based on an investment of $1,000 invested at the beginning of the six-month period and held for the entire period from December 1, 2019 to May 31, 2020.

Actual expenses

The “Actual” line of the table below provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you 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 result by the number in the “Actual” line under the heading entitled “Expenses paid during period” for your applicable class of shares to estimate the expenses you paid on your account during this period.

Hypothetical example for comparison purposes

The “Hypothetical” line of the table below provides information about hypothetical account values and hypothetical expenses based on the Fund’s actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund’s actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds.

Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) and contingent deferred sales charges. Therefore, the “Hypothetical” line of the table is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.

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Portfolio of investments—May 31, 2020

The accompanying notes are an integral part of these financial statements.

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Statement of assets and liabilities—May 31, 2020