NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE 1 – ACCOUNTING POLICIES AND BASIS OF PRESENTATION

Basis of Presentation

The accounting and financial reporting policies of Atlantic Capital Bancshares, Inc. (“Atlantic Capital” or the “Company”) and its subsidiary, Atlantic Capital Bank, N.A. (the “Bank”), conform to accounting principles generally accepted in the United States of America (“GAAP”) and general banking industry practices. The accompanying interim consolidated financial statements have not been audited. All material intercompany balances and transactions have been eliminated.

In management’s opinion, all accounting adjustments necessary to accurately reflect the financial position and results of operations on the accompanying financial statements have been made. These adjustments are normal and recurring accruals considered necessary for a fair and accurate presentation. The accompanying consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in Atlantic Capital’s filing on Form 10-K. The results for interim periods are not necessarily indicative of results for the full year or any other interim periods. Certain prior period amounts have been reclassified to conform to the current year presentation.

NOTE 2 – ACCOUNTING STANDARDS UPDATES AND RECENTLY ADOPTED STANDARDS

In February 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” The guidance gives entities the option to reclassify into retained earnings tax effects related to items in accumulated other comprehensive income (“OCI”) that were stranded in accumulated OCI as a result of tax reform. It is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted and Atlantic Capital adopted ASU 2018-02 as of January 1, 2018. The adoption of this update resulted in a reclassification of approximately $844,000 between accumulated OCI and retained earnings, and a net impact of zero to total shareholders’ equity.

In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities.” The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. Atlantic Capital adopted ASU 2017-12 as of January 1, 2018. The guidance requires a modified retrospective transition method resulting in the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. Adoption did not have a material impact on Atlantic Capital’s consolidated financial statements.

In May 2017, the FASB issued ASU 2017-09, “Compensation - Stock Compensation (Topic 718): Scope and Modification Accounting.” The amendments in this ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in accordance with Topic 718. The amendments were effective for interim and annual reporting periods beginning after December 15, 2017. This ASU did not have a material impact on Atlantic Capital’s consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” to address diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments provide guidance on the following eight specific cash flow issues: 1) debt prepayment or debt extinguishment costs; 2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; 3) contingent consideration payments made after a business combination; 4) proceeds from the settlement of insurance claims; 5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; 6) distributions received from equity method investees; 7) beneficial interests in securitization transactions; and 8) separately identifiable cash flows and application of the predominance principle. The amendments were effective for public companies for fiscal years beginning after December 31, 2017, and interim periods within those fiscal years. This ASU did not have a material impact on the Company’s consolidated financial statements.

In January 2016, the FASB issued ASU 2016-1, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities.” The guidance in this update requires that equity investments (except those accounted for under the equity method of accounting) be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The guidance also simplifies the impairment assessment of equity investments without readily determinable fair values

by requiring a qualitative assessment to identify impairment. In addition, the guidance requires that public business entities base their fair value disclosures for financial instruments that are not measured at fair value in the financial statements on the exit price notion. For public entities, this update was effective for fiscal years beginning after December 15, 2017. The adoption of this update did not have a material impact on Atlantic Capital’s consolidated financial statements, however Atlantic Capital changed the disclosure of financial instruments not measured at fair value to reflect the exit price notion.

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers.” The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. For public companies, this guidance was effective for annual and interim periods beginning after December 15, 2017. Atlantic Capital completed its review of the impact of ASU 2014-09 on components of non-interest income and did not find any significant changes to its methodology of recognizing revenue. Revenue streams impacted by the ASU included service charges, trust income, sales of financed other real estate, and check printing revenue. The Company recorded a cumulative effect adjustment to first quarter 2018 opening retained earnings in an amount less than $2,000 , and included newly applicable revenue disclosures.

In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This guidance shortens the premium amortization period for certain callable debt securities by requiring amortization to the earliest call date. The standard is effective for public companies for annual and interim periods beginning after December 15, 2020. The adoption of this update is not expected to have a material impact on Atlantic Capital’s consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” which intends to simplify goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. The update instead requires entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit’s fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. ASU 2017-04 must be applied prospectively and is effective for the Company on January 1, 2020. Early adoption is permitted. Atlantic Capital does not expect the new guidance to have a material impact on its financial condition or results of operations.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for public companies for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Atlantic Capital is in the process of evaluating the impact of the adoption of ASU 2016-13 on the Company’s consolidated financial statements and disclosures.

In February 2016, the FASB issued ASU 2016-2, “Leases.” Under the new guidance, leases classified as operating leases under previous GAAP must be recorded on the balance sheet. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. The new standard must be adopted using a modified retrospective transition, and provides for certain practical expedients. Upon adoption, Atlantic Capital expects to report higher assets and liabilities as a result of including leases on the consolidated balance sheet. The Company does not expect the new guidance to have a material impact on the consolidated statement of income or the consolidated statement of shareholders’ equity.

NOTE 3 – ACQUISITIONS AND DIVESTITURES

Sale of Southeastern Trust Company (“SETCO”)

On December 14, 2017, the Bank entered into an agreement with The Banc Group, LLC to sell its trust business, a division of the Bank known as Southeastern Trust Company (“SETCO”), for approximately $1.7 million . The Banc Group, LLC, which subsequently changed its name to Southeastern Trust Company, LLC, is controlled by a former director and Chief Operating Officer of the Company. The sale of SETCO closed on June 1, 2018 and Atlantic Capital recorded a gain of $1.7 million during the second quarter, which was net of goodwill impairment in the amount of $69,000 .

NOTE 4 – BALANCE SHEET OFFSETTING

Atlantic Capital enters into reverse repurchase agreements in order to invest short-term funds. Atlantic Capital enters into repurchase agreements for short-term financing needs.

The following table presents a summary of amounts outstanding under reverse repurchase agreements, repurchase agreements, and derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements as of June 30, 2018 and December 31, 2017 . While these agreements are typically over-collateralized, U.S. GAAP requires disclosures in this table to limit the amount of such collateral to the amount of the related recognized asset or liability for each counterparty.