Exhibit 99.4

UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION

The following unaudited pro forma condensed combined financial statements are based on the separate historical financial statements of FB Financial Corporation (“FB Financial”) and Southern States Bancshares, Inc. (“Southern States”) after giving effect to the merger of Southern States with and into FB Financial, with FB Financial continuing as the surviving corporation, and the merger of Southern States Bank, the subsidiary of Southern States, with and into FirstBank, the subsidiary of FB Financial, with FirstBank continuing as the surviving bank (such transactions, collectively, the “Merger”). Upon the completion of the Merger, each share of common stock, par value $5.00 per share, of Southern States (“Southern States common stock”) that was issued and outstanding immediately prior to the completion of the Merger, was converted into the right to receive 0.80 share, or the exchange ratio, of common stock par value $1.00 per share, of FB Financial (“FB Financial common stock”), with cash paid in lieu of fractional shares (the “Merger Consideration”). The unaudited pro forma condensed combined balance sheet as of March 31, 2025 is presented as if the Merger occurred on March 31, 2025. The unaudited pro forma condensed combined income statements for the year ended December 31, 2024 and the three months ended March 31, 2025 are presented as if the Merger occurred on January 1, 2024. In connection with the plan to integrate the operations of FB Financial and Southern States, FB Financial has incurred, and is expected in the future to incur, nonrecurring merger and conversion expenses, such as costs associated with systems implementation, severance, and other costs related to exit or disposal activities.

The unaudited pro forma condensed combined financial statements have been prepared using the acquisition method of accounting for business combinations under generally accepted accounting principles in the United States (“GAAP”) with FB Financial as the acquiror for accounting purposes. FB Financial has not had sufficient time to completely evaluate the significant identifiable long-lived tangible and identifiable intangible assets of Southern States. Accordingly, the unaudited pro forma adjustments, including the allocations of the purchase price, are preliminary and have been made solely for the purpose of providing unaudited pro forma condensed combined financial information.

A final determination of the Merger Consideration and fair values of Southern States’s assets and liabilities will be based on the actual net tangible and intangible assets of Southern States that existed as of the closing date of the Merger, which was July 1, 2025. Consequently, fair value adjustments and amounts preliminarily allocated to goodwill and other identifiable intangibles, such as the core deposit intangible, could change significantly from those allocations used in the unaudited pro forma condensed combined financial statements presented herein and could result in a material change in amortization of acquired intangible assets.

The unaudited pro forma condensed combined financial statements are presented for illustrative purposes only. The unaudited pro forma condensed combined financial statements are not necessarily, and should not be assumed to be, an indication of the results that would have been achieved had the Merger been completed as of the dates indicated or that may be achieved in the future. The preparation of the unaudited pro forma condensed combined financial statements and related adjustments required management to make certain assumptions and estimates.

The unaudited pro forma condensed combined financial statements should be read together with:

UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET
AS OF MARCH 31, 2025

PRELIMINARY PURCHASE PRICE ALLOCATION

The pro forma adjustments include the estimated purchase accounting entries to record the Merger. The excess of the purchase price over the fair value of net assets acquired, net of deferred taxes, is allocated to goodwill. Estimated fair value adjustments included in the pro forma condensed combined financial information are based upon available information and certain assumptions considered reasonable, and may be revised as additional information becomes available.

The following table summarizes the preliminary purchase price allocation to the estimated fair value of assets and liabilities of Southern States (in thousands, except share count and per share data) based on the closing share price of FB Financial common stock of $45.30 on the New York Stock Exchange on June 30, 2025, the last trading day prior to the effective date of the Merger, to the acquired identifiable assets and liabilities assumed and the pro forma goodwill generated from the Merger:

The following table sets forth a preliminary allocation of the estimated Merger Consideration to the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed of Southern States using Southern States’ unaudited consolidated balance sheet as of March 31, 2025 (in thousands) based on the closing share price of FB Financial common stock of $45.30 on the New York Stock Exchange on June 30, 2025, the last trading day prior to the effective date of the Merger, to the acquired identifiable assets and liabilities assumed and the pro forma goodwill generated from the Merger:

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENTS OF INCOME
FOR THE THREE MONTHS ENDED MARCH 31, 2025

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENTS OF INCOME
FOR THE YEAR ENDED DECEMBER 31, 2024