2 TABLE OF CONTENTS Legal Disclosures 3 Guiding Principles & Social Impact 4– 5 Business First Bancshares, Inc. Overview 6 – 11 Liquidity and Deposits 12 Securities Portfolio 13 Branches & Noninterest Revenue 14 – 15 Financial Results Q3 2024 Financial Results 17 – 18 Stable Credit Performance 19 Yield/Rate Analysis 20 – 22 Loan Portfolio Operating Loan Growth 24 Loan Composition 25 – 28 Appendix 30 – 37

3 LEGAL DISCLOSURES Special Note Concerning Forward-Looking Statements This investor presentation contains “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact are forward-looking statements. You can identify these forward-looking statements in some cases through the Company’s use of words such as “believes,” “anticipates,” “expects,” “may,” “will,” “assumes,” “should,” “predicts,” “could,” “would,” “intends,” “targets,” “estimates,” “projects,” “plans,” “potential” and other similar words and expressions of the future or otherwise regarding the Company’s future business and financial performance and/or the performance of the banking and mortgage industry and economy in general. Forward-looking statements are based on the information known to, and current beliefs and expectations of, the Company’s management and are subject to significant risks and uncertainties. Actual results may differ materially from those contemplated by such forward-looking statements. A number of important factors could cause actual results to differ materially from those contemplated by the forward-looking statements in this presentation including, without limitation, the risks set forth in “Forward Looking Statements” and “Risk Factors” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 1, 2024 (as may be amended in the Company’s Quarterly Reports on Form 10-Q). Many of these factors are difficult to foresee and are beyond the Company’s ability to control or predict. The Company believes the forward-looking statements contained herein are reasonable; however, undue reliance should not be placed on any forward-looking statements, which are based on current expectations and speak only as of the date that they are made. The Company does not assume any obligation to update any forward-looking statements as a result of new information, future developments or otherwise, except as otherwise may be required by law. Non-GAAP Financial Measures This presentation includes certain financial measures that are not measures recognized under U.S. generally accepted accounting principles (“GAAP”) and therefore are considered non-GAAP financial measures. The Company’s management uses these non-GAAP financial measures in their analysis of the Company’s performance, financial condition and the efficiency of its operations. Management believes that these non-GAAP financial measures provide a greater understanding of the ongoing operations and enhance comparability of results with prior periods. The Company’s management also believes that investors find these non-GAAP financial measures useful as they assist investors in understanding the Company’s underlying operating performance and the analysis of ongoing operating trends. However, the non-GAAP financial measures discussed herein should not be considered in isolation or as a substitute for the most directly comparable or other financial measures calculated in accordance with GAAP. Moreover, the manner in which the Company calculates the non-GAAP financial measures discussed herein may differ from the reporting measures with similar names as used by other companies. You should understand how such other banking organizations calculate their non-GAAP financial measures with names similar to the non-GAAP financial measures discussed herein when comparing such information. Reconciliations of non-GAAP financial measures to GAAP financial measures are provided in the Appendix to this presentation.

4 GUIDING PRINCIPLES b1BANK’s five guiding principles reflect our core beliefs and values, which drive all decisions irrespective of our goals, strategies, or external factors. These tenets are more than guides for making business decisions; they are the core of our culture, driving our day-to-day interactions between employees and with our clients to make a positive impact on the communities we serve.

5 SOCIAL IMPACT 2024 YTD Total Volunteerism:  3,845 Hours  270 hours of financial literacy education and non-profit service  Partnership through b1BANK Financial Institutions Group  Partner with Minority Deposit Institutions (MDI) by helping with correspondent banking services, specialized expertise, supplier network access and investment. Each partnership is unique based on the MDI’s needs.  Through 2024: 14 bank partners 2021 Inception Through September 2024:  Mentored 743 businesses  Conducted training classes to help 3,055 entrepreneurs start or grow their business Project REACh b1 FOUNDATION b1COMMUNITY 3,845 Volunteer Hours 743 Businesses Mentored

6 BUSINESS FIRST BANCSHARES, INC. OVERVIEW Company Overview Ticker: BFST (Nasdaq) Market Capitalization: $655 million (as of September 30, 2024) Headquarters: Baton Rouge, Louisiana Franchise Highlights: • Diversified commercial-focused bank with $6.9 billion in assets and operations in Louisiana, Texas and Mississippi including; 39 legacy Louisiana full-service Banking Centers(5), two Loan Production offices, 11 metro-focused Texas Banking Centers and one registered investment advisory in Ridgeland, MS • #1 deposit market share in Louisiana for Louisiana-headquartered banks(1) • Texas markets represents 35% of credit exposure, as of 9/30/24 • Diversified deposit base with 105,116 accounts with an average balance of $53,664 and an organic deposit growth CAGR of ~17% since 4Q15(2) • Since 2018, completed three equity capital raises including IPO totaling $151.0 million of additional capital in addition to two subordinated debt issuances totaling $77.5 million • On October 1, 2024, Business First closed its previously announced acquisition of Oakwood Bancshares, Inc. (Oakwood) and its wholly-owned subsidiary, Oakwood Bank. Oakwood had approximately $863.6 million of total assets, $700.2 million of total loans, and $741.3 million of total deposits as of September 30, 2024 BFST operates 52 locations including 50 full-service Banking Centers(5) and 2 LPOs across Louisiana and Texas (1) Deposit market share is as of June 30, 2024, per FDIC data. (2) Jumbo deposits reflects total deposits of $250 thousand or greater. Deposit balances exclude Business First Bancshares Holding Company deposits with the Bank subsidiary and includes brokered deposits. (3) Non-GAAP financial measure. See appendix for applicable reconciliation. (4) Preliminary consolidated capital ratios as of September 30, 2024. (5) Includes one closed full-service Banking Center in Rayville, LA that maintains an active ITM. BFST Footprint Assets $6,889 Gross Loans Held for Investments $5,220 Deposits $5,641 Loan-to-Deposit Ratio 92.5% ROAA 0.97% ROACE 10.76% Core ROAA(3) 1.01% Core ROACE(3) 11.23% NPLs/Total Loans(HFI) 0.50% Tier 1 Risk-based Capital Ratio(4) 10.69% Tier 1 Leverage Ratio(4) 9.61% Total Risk-based Capital Ratio(4) 12.99% TCE/TA(3) 7.75% Financial Highlights of 3Q24 ($ millions)

7 EXECUTIVE MANAGEMENT Jude Melville Chairman, President and CEO Age: 50 Year Started at BFST: 2006 Philip Jordan EVP, Chief Banking Officer Age: 52 Year Started at BFST: 2008 Keith Mansfield EVP, Chief Operations Officer Age: 48 Year Started at BFST: 2016 Chad Carter EVP, Correspondent Banking Age: 41 Year Started at BFST: 2011 Gregory Robertson EVP, Chief Financial Officer Age: 52 Year Started at BFST: 2011 Heather Roemer SVP, Chief of Staff Age: 43 Year Started at BFST: 2009 Saundra Strong EVP, General Counsel Age: 46 Year Started at BFST: 2021 Kathryn Manning EVP, Chief Risk Officer Age: 37 Year Started at BFST: 2013 Warren McDonald EVP, Chief Credit Officer Age: 58 Year Started at BFST: 2006 Jerry Vascocu President, b1BANK(1) Age: 51 Year Started at BFST: 2022 (1) On October 17, 2024, Jerry Vascocu was promoted to President of b1BANK.

8 DIVERSIFIED FOOTPRINT Note: Dollars in millions. Financial data as of September 30, 2024. Deposit balances do not tie to consolidated figures as a result of wholesale deposits, timing differences and other items recorded at the corporate level. Loan amounts based on outstanding loan balance before accounting adjustments. (1) Banking Center count includes one standalone ITM. (2) Excludes standalone ITM from Deposits / Banking Center calculation. Dallas Fort Worth Region # of Banking Centers: 6 # of LPOs: 1 Total Loans: $1,356.3 Total Deposits: $414.2 Deposits / Banking Center: $69.0 Houston Region # of Banking Centers: 5 Total Loans: $453.9 Total Deposits: $539.5 Deposits / Banking Center: $107.9 Southwest Louisiana Region # of Banking Centers: 13 Total Loans: $554.3 Total Deposits: $1,093.6 Deposits / Banking Center: $84.1 Bayou Region # of Banking Centers: 6 Total Loans: $309.6 Total Deposits: $674.2 Deposits / Banking Center: $112.4 Greater New Orleans Region # of Banking Centers: 2 # of LPOs: 1 Total Loans: $834.9 Total Deposits: $367.9 Deposits / Banking Center: $184.0 Capital Region # of Banking Centers: 9 Total Loans: $736.3 Total Deposits: $870.3 Deposits / Banking Center: $96.7 North Louisiana Region # of Banking Centers(1): 9 Total Loans: $965.0 Total Deposits: $880.7 Deposits / Banking Center(2): $110.1

9 LONG-TERM PROFITABILITY Note: Dollars in millions, except for per share data. (1) Non-GAAP financial measure. See appendix for applicable reconciliation. (1) (1) (1) (1) (1) Diluted EPS Available to Common Shareholders Tangible Book Value Per Share Net Income Available to Common Shareholders Efficiency Ratio

10 (amount s in act uals) Non-Jumbo Deposit Accounts 15,312 15,539 15,608 41,064 37,508 90,963 89,359 97,740 101,546 101,609 102,988 101,932 Jumbo Deposit Accounts(1) 448 502 612 987 1,001 1,902 2,300 2,714 3,009 3,096 3,155 3,184 Total Deposit Accounts(1) 15,760 16,041 16,220 42,051 38,509 92,865 91,659 100,454 104,555 104,705 106,143 105,116 Avg. Total Deposit Account Bal. 57,375$ 58,151$ 65,076$ 41,234$ 46,275$ 38,946$ 44,483$ 47,986$ 50,201$ 53,223$ 52,417$ 53,664$ $904 $933 $1,056 $1,180 $1,782 $2,442 $4,077 $4,343 $5,249 $5,573 $5,564 $5,641 $554 $1,175 $477 $904 $933 $1,056 $1,734 $1,782 $3,617 $4,077 $4,820 $5,249 $5,573 $5,564 $5,641 Q4'15 Q4'16 Q4'17 Q4'18 Q4'19 Q4'20 Q4'21 Q4'22 Q4'23 Q1'24 Q2'24 Q3'24 Organic Deposits Acquired Deposits DEPOSIT GROWTH THROUGH ORGANIC AND M&A STRATEGY • Deposit strategy reflects consistent organic growth augmented with opportunistic M&A • Total deposit CAGR of ~23% since Q4’15 • Organic deposit CAGR of ~17% since Q4’15 (excluding acquired deposits)(2) • Acquired Texas Citizens and $477M in total deposits in 2022 • $304M organic growth in total deposits in 2022(2) 2022 Note: Dollars in millions, unless otherwise noted. Above deposit information reflects b1BANK bank-level balances. Jumbo deposits reflects total deposits of $250 thousand or greater. (1) b1BANK deposit accounts excludes 5 Business First Bancshares Holding Company accounts with the Bank subsidiary. (2) Includes brokered deposits. (3) Preliminary deposit balances as of 9/30/2024. • Acquired Pedestal and $1.2B in total deposits in 2020 • $668M organic growth in total deposits in 2020(2) 2020 • Acquired $554M deposits in 2018 (Minden & Richland) • $134M organic growth in total deposits in 2018(2) 2018 (3)

11 9.75-Year CAGR Total Assets 687$ 1,077$ 1,106$ 1,322$ 2,099$ 2,276$ 4,175$ 4,733$ 5,990$ 6,585$ 6,889$ 27% Core Net Income(1) 4.4$ 4.1$ 5.1$ 3.1$ 16.8$ 24.6$ 37.5$ 53.9$ 57.6$ 66.3$ 63.1$ 32% Core Diluted EPS(1) 0.72$ 0.73$ 0.70$ 0.39$ 1.45$ 1.80$ 2.05$ 2.61$ 2.52$ 2.62$ 2.48$ 14% Core ROAA(1) 0.58% 0.51% 0.45% 0.26% 1.00% 1.15% 1.09% 1.22% 1.05% 1.05% 0.95% --- Core Efficiency Ratio(1) 76.5% 77.6% 81.1% 77.7% 66.9% 63.4% 61.1% 60.6% 62.8% 61.9% 64.4% --- 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Q3'24 TTM Texas Citizens Bancorp • Closed 3/1/22 • $546MM in assets • 6 locations acquired • $54.8MM deal value • 131 days to close transaction PROVEN M&A TRACK RECORD Note: Dollars in millions, except per share data. (1) Non-GAAP financial measure. See appendix for applicable reconciliation. Core earnings measures exclude merger charges, gain/loss on sale of securities, gain/loss on sale of former bank branches, among other non- core items. (2) Non-GAAP financial measure. See appendix for applicable reconciliation. Reflects TTM results as of September 30, 2024. (3) Consolidated total assets for Oakwood Bancshares, Inc. as of March 31, 2024. Reflects transaction value at announcement. American Gateway • Closed 3/31/15 • $366MM in assets • 10 locations acquired • $47.2MM deal value • 250 days to close transaction Minden Bancorp • Closed 1/1/18 • $315MM in assets • 2 locations acquired • $56.5MM deal value • 87 days to close transaction Richland State Bancorp • Closed 11/30/18 • $307MM in assets • 8 locations acquired • $44.7MM deal value • 179 days to close transaction Pedestal Bancshares • Closed 5/1/20 • $1.26B in assets • 22 locations acquired • $128.3MM deal value • 100 days to close transaction • BFST has a proven M&A track record and has successfully closed and integrated six whole-bank acquisitions and one non-bank RIA acquisition since 2015 • Most recent ability to close was proven with Oakwood Bancshares transaction, which was announced on April 25, 2024, and closed on October 1, 2024 • 27% total asset CAGR, 32% core net income CAGR, and 14% core EPS CAGR since commencing BFST’s M&A strategy • Significant improvement in profitability over the last ~10 years, with core ROAA improving from 0.58% in 2014 to 0.95%(2) and core efficiency ratio improving from 76.5% to 64.4%(2) over the same timeframe Oakwood Bancshares • Closed 10/1/24 • $840MM in assets(3) • 6 locations acquired • $85.7MM deal value(3) • 159 days to close transaction

12 LIQUIDITY AND DEPOSITS Deposit Composition Non-Interest Bearing NOW & Int. Bearing DDA MMDA & Savings Time Deposits • Bolstered cash reserves in 2023 in response to tighter monetary policy and continued to carry higher balances in 3Q24 at 5.56% to total assets. • Remain focused on core deposits, which represent over 85% of total deposits. • Continue to take advantage of wholesale funding alternatives to optimize interest costs and liquidity, utilizing FHLB and the brokered deposit market. • Ample contingent liquidity available of over $3 billion at 9/30/2024, to supplement core deposit growth as needed. $5.64B Note: Dollars in millions. Data as of September 30, 2024. Historical Deposit Composition Liquidity Sources FHLB Borrowings Capacity 1,171$ Unencumbered Securities 574$ Cash Reserves 213$ Fed Funds Sold 170$ Fed Funds Lines Available 145$ FRB Discount Window 922$ Total 3,195$

13 SECURITIES PORTFOLIO AFS Securities Portfolio• Portfolio serves as a source of on-balance sheet liquidity and provides interest income stability during times of declining rates. • With the relatively high-rate environment, the Bank is reinvesting portfolio cash flows and taking opportunities to modestly grow the portfolio as liquidity allows. • Total portfolio as of 3Q24 was $974.6 million in AFS, of which agency mortgage-backed securities (MBS) and A-rated municipal securities were the largest components. - 3Q24 weighted average yield of 2.59% - Weighted average life of 4.49 years - Estimated effective duration of 3.77 years $974.6M Note: Dollars in millions. Data as of September 30, 2024. Book Market Net Unrealized Value Value Gain / (Loss) Municipal Securities 308.5$ 285.1$ (23.4)$ Mortgage-Backed Securities 590.0 560.1 (30.0)$ Corporate & Other Securities 48.2 44.5 (3.7)$ U.S. Government Agencies / Treasuries 27.8 26.4 (1.4)$ Total AFS Securities 974.6$ 916.1$ (58.5)$ Deferred Tax Impact 12.4$ Other Equities Unrealized Gain/Loss -$ Accumulated Other Comprehensive Income/Loss (46.1)$

14 Data Source: S&P Global Market Intelligence. (1) Reflects b1BANK branch network, including all acquired, closed/divested, and de novo Banking Centers. (2) Includes four legacy b1BANK locations that converted from LPO to full-service Banking Centers. Includes six DFW Banking Centers. (3) Includes one closed full-service Banking Center in Rayville, LA that maintains an active ITM. (4) Excludes one location sold by Pedestal prior to closing. (5) Excludes active LPOs and Rayville, LA standalone ITM from calculation. (6) Represents aggregate growth in average noninterest bearing deposits per Banking Center from December 31, 2014, to September 30, 2024. Excludes active LPOs and Rayville, LA standalone ITM from calculation. OPTIMIZING BRANCH NETWORK AND INFRASTRUCTURE INVESTMENTS  6 full-service Banking Centers  ~$98MM avg. total deposits per Banking Center December 31, 2014  48 acquired Banking Centers  7 De Novo Banking Centers  7 De Novo LPOs (4 LPOs converted to full-service, 1 LPO consolidated into existing Banking Center)  2 legacy b1BANK Banking Centers closed  1 LPO consolidated into existing location  10 acquired Banking Centers closed  3 acquired Banking Centers sold for a gain  50 Banking Centers(3)  2 active LPOs  ~$115MM avg. total deposits per Banking Center(5)  ~34% increase in average NIB deposits per Banking Center(6) September 30, 2024 6 Locations 52 Locations 62 Added BFST Footprint(1) 16 Closed or Sold b1BANK (Organic / De Novo) (15 active(2) / 2 closed) Richland (5 active(3) / 2 sold / 1 closed) American Gateway (6 active / 4 closed) Pedestal (17 active / 1 Sold / 4 closed(4)) Minden (2 active / 0 closed) Texas Citizens (5 active / 1 closed) Closed, Sold, or Consolidated (2 legacy / 13 acquired / 1 De Novo LPO) Loan Production Office (LPO) (2 active / 1 consolidated) Banking Center Activity – 3Q24  Opened Southern Dallas Banking Center in Dallas, TX  Opened Westlake LPO in Westlake, TX

15 SMITH SHELLNUT WILSON (SSW) • April 1, 2021 – Smith Shellnut Wilson, LLC (SSW) was acquired by b1BANK and operates as a wholly-owned affiliate of b1BANK • SSW was founded in 1995 and offers investment advisory services, which includes discretionary and non-discretionary management of investment portfolios for a variety of clients including financial institutions, municipalities, high-net worth individuals, trusts and business entities • As of September 30, 2024, SSW maintained ~$6.91 billion in AUM(1), which includes negative impact of AOCI (~$5.63 billion bank AUM(1), ~$1.28 billion non-bank AUM) • For 3Q24, 40% of total AUM fees were represented by banks and credit unions and SSW provided portfolio management services for 50 bank clients FINANCIAL INSTITUTIONS GROUP (FIG) • September 2020, b1BANK announced the formation of its Financial Institutions Group (FIG) • The FIG team is headquartered in Dallas and responsible for correspondent banking activities, including loan participations and deposit gathering initiatives • FIG currently maintains $535 million in total loan participations sold(2) and has generated $257(2) million in total deposits through a relationship network of ~100(2) total bank partners WATERSTONE LSP February 1, 2024 – Waterstone LSP was acquired by b1BANK and operates as a wholly- owned affiliate as a comprehensive resource for streamlined SBA lending. Waterstone opti- mizes partner banks’ SBA lending capabilities and achieves growth objectives with the following services:  Strategic Planning: Collaborate with client’s leadership to tailor an SBA lending strategy aligned with the institution’s goals  Efficient Loan Management: Waterstone’s platform simplifies pre-qualification, underwriting, packaging, and closing, accelerating the loan cycle and minimizing workload  Professional Servicing & Liquidation: Handle monthly reporting, remittances, payment processing, and all servicing actions diligently, ensuring compliance and efficiency Snapshot as of September 30, 2024:  21 banks under LSP Agreements with 5 new banks signed during 3Q24  3Q24 loan closing volume of $17.2 million (includes $12.0 million of b1BANK loan closings)  4Q24 active pipeline of ~$44 million INTEREST RATE SWAPS November 2023, b1BANK announced the formation of its Derivative Solutions Group, providing a full suite of interest rate hedging products offered to our commercial borrowers, including, but not limited to; interest rate swaps, caps, floors, collars, cancellable swaps. We expect to expand into our institutional client base. Overview / Benefits • Protects b1BANK’s balance sheet from interest rate risk and generates fee income • Allows b1 bankers to compete effectively with larger regional and national banks who offer same product line, primarily, customer-level back-to-back rate swaps 3Q24 YTD PRODUCTION • 20 total trades • $71.6 million in total loan notional from back-to-back client swaps generated $900k in fee income NONINTEREST REVENUE OPPORTUNITIES (1) Includes bank and credit union AUM. Excludes b1BANK securities portfolio and TruPs/CDs included in client portfolios. (2) Reflects current position as of September 30, 2024. Does not necessarily include total production/volume since inception. • The FIG sales team was also instrumental in BFST’s 1Q21 self- managed $52.5 million subordinated debt offering and the 3Q22 self- managed $72.0 million preferred equity raise

17 (1) Non-GAAP financial measure. See appendix for applicable reconciliation. (2) Preliminary consolidated capital ratios as of 9/30/2024. (3) Past due and nonaccrual loan amounts exclude purchased impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. This was applicable to all periods 12/31/2022, and prior. The guidance and methodology were changed beginning 1/1/2023, due to CECL adoption. QUARTERLY FINANCIAL HIGHLIGHTS • Net interest margin excluding loan discount accretion increased 12 bps headlined by a rate reduction of the money market portfolio of 35 bps from the linked quarter of 4.22% to 3.87% while increasing loan yields to 7.12% up 5 bps from the linked quarter. • Weighted average loan originations continued to hold strong in September at 8.49%. • Investments in Non-interest income revenue initiatives continue to show early signs of success with Swap revenue of $937 thousand during Q3. 9/30/2023 12/31/2023 3/31/2024 6/30/2024 9/30/2024 Diluted Earnings per Common Share $0.76 $0.57 $0.48 $0.62 $0.65 ROAA 1.17 % 0.88 % 0.74 % 0.95 % 0.97 % ROACE 14.16 10.54 8.51 10.94 10.76 Net Interest Margin 3.61 3.50 3.32 3.45 3.51 Efficiency Ratio(1) 59.23 63.36 69.80 65.14 63.45 Net Income Available to Common Shareholders in thousands $19,104 $14,474 $12,220 $15,856 $16,492 Core Pre-Tax, Pre-Provision Income(1) in thousands $25,123 $23,444 $19,061 $23,494 $25,281 Core Diluted Earnings Per Common Share(1) $0.70 $0.66 $0.50 $0.64 $0.68 Core ROAA(1) 1.10 % 1.03 % 0.77 % 0.98 % 1.01 % Core ROACE(1) 13.32 12.27 8.92 11.22 11.23 Net Interest Margin excluding loan discount accretion(1) 3.46 3.38 3.27 3.34 3.46 Core Efficiency Ratio(1) 60.58 62.59 68.68 64.50 62.21 Tier 1 Leverage Ratio(2) 9.31 % 9.52 % 9.38 % 9.49 % 9.61 % Total Risk-Based Capital Ratio(2) 12.71 % 12.85 % 12.78 % 12.88 % 12.99 % Tangible Common Equity / Tangible Assets(1) 6.76 % 7.28 % 7.19 % 7.43 % 7.75 % Tangible Book Value Per Share(1) $17.03 $18.62 $18.61 $19.22 $20.60 NPLs / Loans (Excl. TDRs)(3) 0.33 % 0.34 % 0.43 % 0.43 % 0.50 % Allowance for Credit Losses / Loans (Excl. HFS) 0.90 0.88 0.88 0.86 0.86 ACL + FV Discount on Acquired Lns/ Loans (Excl. HFS) 1.20 1.12 1.10 1.05 1.04 NCOs / Average Loans 0.04 0.02 0.01 0.03 0.02 Asset Quality Profitability Capital For the Quarter Ended,

18 BALANCE SHEET HIGHLIGHTS (1) Preliminary consolidated capital ratios as of September 30, 2024. (2) Non-GAAP financial measure. See appendix for applicable reconciliation. For the quarter ended, $ millions 9/30/2024 6/30/2024 9/30/2023 Gross Loans (Excl. HFS) $5,220.1 1% 6% ACL + Fair Value Discount on Acquired Loans $54.0 0% -8% Investment Securities $916.1 5% 8% Deposits $5,640.9 1% 9% Borrowings $493.5 15% -23% Total Equity $699.5 5% 16% Balance Sheet Ratios, $ actual 9/30/2024 6/30/2024 9/30/2023 Total Risk-Based Capital Ratio(1) 12.99 % 12.88 % 12.49 % Tangible Common Equity / Tangible Assets(2) 7.75 % 7.43 % 6.76 % Tangible Book Value Per Share(2) $20.60 $19.22 $17.03 Gross Loans (Excl. HFS) / Deposits 92.54 % 92.80 % 97.69 % Actual Change vs. Q3'24 Highlights Organic loan growth of 1.11% for the quarter (4.41% Annualized) led by CRE ($58.3 million) and C&D ($16.9 million). Loan growth for the quarter was headlined by organic growth in North LA and New Orleans with our Texas exposure down slightly to 35% of the overall loan portfolio. Deposits increased $77.3 million (1.39%, or 5.53% Annualized) during Q3 mostly attributable to $196.5 million growth in interest- bearing deposits partially offset by $119.3 million of reduction in noninterest-bearing deposits. ACL + Fair Value Discount on acquired loans as a percentage of total loans of 1.03%. Loan purchase discount decreased by approximately $0.7 million. The quarterly improvement in fair market value was due to positive fair value adjustments ($27.4 million). Year-over-year shift was due to focus on organic deposit growth. Borrowings increased $65.0 million for the quarter due to an additional short-term, 14-day FHLB advance that matured on October 1, 2024, and was refinanced. The year-over-year decline of $148.7 million was mostly due to the payoff of a $300.0 million BTFP advance in March. Increase in equity for the quarter was driven by $16.5 million net income available to common shareholders as well as a $21.6 million improvement in AOCI for Q3. The annual increase was driven by $59.0 million net income available to common shareholders as well as a $48.1 million AOCI improvement. Highlights Improvement for the quarter and year are due to retention of earnings coupled with a positive AOCI changes. TBV improved from the linked quarter and is attributed to $16.5 million net income available to common shareholders and a $21.6 million improvement in AOCI. TBVPS growth excluding AOCI of 9.74% QTD and 8.00% year-over-year show franchise value. The improvement in the risk-based capital ratio was attributable to retained earnings supporting loan growth.

19 ACL & FV Discount(3) Past Due Loans(1) Note: Dollars in millions. Peer average based on average of last five quarters ending 2Q24, Gulf South Peer Group defined as: FBMS, FGBI, HBCP, ISTR, OBK, RRBI, GNTY, VBTX, TCBX, STEL. (1) Past due loans include balances past due 30 days or more and not on a nonaccrual status. (2) Nonperforming loans include loan balances past due 90 days or more as well as loans on a nonaccrual status. (3) Total Loans includes SBA PPP loan balances. STABLE CREDIT PERFORMANCE Nonperforming Loans(2) Net Charge-offs

20 Note: Data is as of September 30, 2024. Chart based on GAAP data. (1) NIM excluding loan discount accretion is a non-GAAP financial measure and excludes the accretion of the loan discount on acquired loans. See appendix for applicable reconciliation. YIELD / RATE ANALYSIS (1)

21 Note: Dollars in millions; amounts may not total due to rounding. Betas are estimates that reflect the deposit portfolio composition as of September 30, 2024, based on analysis of BFST deposit pricing in prior cycles. (1) Core CDs exclude brokered deposits and CDARs. (2) Reflects consolidated deposit balances as of September 30, 2024, for b1BANK only. (3) Reflects weighted average rate as of month-end, September 30, 2024. ESTIMATED DEPOSIT BETA IN EASING RATE CYCLE Approx. Beta in Easing Cycle Weighted Avg. Rate(3) $ Amount of Deposits % of DepositsDeposit Portfolio(2) (as of 9/30/24) -%-%$1,190.921.1%Non-Interest Bearing Deposits 45 - 55%3.58%$494.38.8%Core Time Deposits 55 - 65%4.77%$296.75.3%High Beta/Special CDs 100%4.73%$534.29.5%Brokered Deposits 25 - 35%2.32%$932.216.5%Low Beta/Standard Non-Maturity Deposits 70 - 80%3.58%$2,192.638.9%Higher Beta Non-Maturity Deposits 45 - 55%2.79%$5,640.9100.0%Total Deposits • Internal modeling implies an estimated total deposit beta of 45% – 55%, in the near-term downward rate cycle • Opportunity to improve pre-tax earnings with a low single-digit expansion in the Core NIM under the 50 bps reduction scenario, assuming a static balance sheet over the next twelve months • Overall Core CD balance(1) retention rate increased to 83% during September, up from 75% in June • $204 million remaining Core CD balances(1) will mature in Q4’24, with $109 million maturing in Q1’25

22 Loan Portfolio HFI Note: Dollars in millions. Data is as of September 30, 2024. Loan balances per the general ledger before accounting adjustments, excluding deferred costs/fees, credit cards, overdrafts and loan premium/discount. (1) Reflects weighted average stated rate for the month-end for each period indicated. (2) Includes adjustable-rate loans. • 39.9% of total loans HFI are floating rate - 98.4% of floating-rate loans would reprice immediately with another +0.25% shift in interest rates • 75.1% of floating-rate loans float on the WSJ Prime Daily Index • 59.4% of total loans HFI are fixed rate - 9.8% of fixed-rate loans mature within the next 12 months(2) LOAN PORTFOLIO OVERVIEW – REPRICING OPPORTUNITY Maturities by Loan Type Outstanding Balance Weighted ($MM) (% of Total) Avg. Rate(1) Fixed Rate Loans (mature > 1 year) 2,626.9$ 50.3% 5.61% Fixed Rate Loans (mature < 1 year) 473.8 9.1% 6.28% Floating Rate with Floors 923.6 17.7% 8.02% Floating Rate without Floors 1,159.2 22.2% 8.26% Adjustable Rate Loans 37.2 0.7% 5.55% Total 5,220.7$ 100.0% 6.69% 50.3% 9.1% 17.7% 22.2% 0.7% 49.7% of total loans HFI are floating / variable rate or fixed rate maturing within the next 12-months 98.4% of all floating- rate loans would reprice immediately with another +0.25% shift in interest rates Fixed Rate Loans Maturing Beyond 1-Year (dollars in millions) Q4'25 FY 2026 FY 2027 FY 2028 > FY 2028 C&D 1.9$ 36.4$ 96.4$ 11.8$ 33.1$ Owner-Occupied CRE 5.0 92.6 153.0 118.2 272.8 Income Producing CRE 6.6 163.3 308.3 80.2 213.8 C&I 4.4 54.8 83.9 97.0 202.7 Agricultural 0.1 0.7 0.9 0.7 2.2 Farmland 0.1 6.2 6.0 13.2 27.2 1-4 Family 9.6 69.2 81.7 56.6 157.8 Consumer & Other 2.6 15.1 84.9 20.2 36.0 Total 30.4$ 438.2$ 815.0$ 397.8$ 945.4$ Weighted Avg. Rate 4.85% 5.32% 5.17% 6.96% 5.59% Fixed Rate Loans Maturing within the next 12-Months NTM (dollars in millions) Q4'24 Q1'25 Q2'25 Q3'25 Total C&D 20.0$ 9.5$ 36.3$ 20.2$ 86.0$ Owner-Occupied CRE 19.5 11.6 8.1 23.3 62.5 Income Producing CRE 24.0 16.3 7.6 9.4 57.4 C&I 33.1 29.7 35.2 13.8 112.0 Agricultural 3.6 28.6 6.1 3.2 41.5 Farmland 7.0 0.5 5.7 1.2 14.4 1-4 Family 17.1 5.5 17.9 9.4 49.9 Consumer & Other 14.5 12.0 21.0 2.8 50.2 Total 138.8$ 113.7$ 137.9$ 83.4$ 473.8$ Weighted Avg. Rate 6.51% 6.59% 6.04% 5.86% 6.28% All Floating Rate Loans, Maturing, (dollars in millions) Q4'24 FY 2025 FY 2026 FY 2027 > FY 2027 C&D 135.7$ 117.6$ 71.4$ 13.9$ 45.1$ Owner-Occupied CRE 9.0 19.4 4.5 22.6 180.1 Income Producing CRE 35.8 27.1 67.6 17.2 162.0 C&I 128.3 259.4 84.7 19.0 215.7 Agricultural 3.1 31.4 0.0 0.9 1.8 Farmland 5.7 69.1 7.9 21.1 17.0 1-4 Family 10.5 20.6 14.1 9.4 90.2 Consumer & Other 39.3 40.8 5.3 18.8 39.4 Total 367.4$ 585.5$ 255.6$ 123.0$ 751.4$ Weighted Avg. Rate 8.52% 8.37% 8.29% 8.92% 7.64% (1) (1) (1)

24 Note: Data is as of September 30, 2024. Dollars in millions. Loan balances are before accounting adjustments. (1) Net operating loans are defined as loans per the general ledger, excluding deferred costs/fees, corporate and other, overdrafts and loan premium/discount. OPERATING LOAN GROWTH Loan Composition by Region Q3’24 YTD Loan Growth Waterfall $1,282 $(487) $(610) $35 $5,221 $5,000 Beginning Loans BFST Originations Paydowns Payoffs Net Refinance Ending Loans12/31/23 9/30/24

25 Note: Loan composition as of September 30, 2024, based on preliminary FDIC call report data. LOAN COMPOSITION $5.22 billion Total Loan Portfolio Composition Top 5 Exposure Categories Outstanding Unfunded Average NPLs % of Balance Commitment Loan Size Total Loans Commercial $1.4 billion $656 million $334 thousand 0.39% CRE - Owner-Occupied $937 million $37 million $807 thousand 0.65% CRE - Non Owner-Occupied $1.13 billion $54 million $1.85 million 0.07% Construction & Land $654 million $169 million $588 thousand 0.89% 1-4 Family $494 million $5 million $186 thousand 1.13% Total $4.62 billion $0.92 billion $754 thousand 0.51%

26 LOAN COMPOSITION: COMMERCIAL Note: Data is as of September 30, 2024. Percentages based on loan balances before accounting adjustments. • Commercial loans represent 28.7% of the total loan portfolio • Total commercial loan growth year-over-year of $164.1 million represents 54.7% of all loan growth • Weighted average maturity of the commercial portfolio is 2.36 years Commercial Loans by Collateral Commercial Loans by Region

27 CRE Composition - Income Producing Income Producing CRE Portfolio Hotel/Motel 15.4% Office Building 23.3% Office/Warehouse 3.0% Warehouse 8.8% Retail - Single-Tenant 9.0% Retail - Multi-Tenant 27.2% Commercial Building 6.7% Other 6.7% Total CRE - Income Producing 100.0% 15.4% 23.3% 3.0% 8.8% 9.0% 27.2% 6.7% 6.7% CRE Composition - Owner Occupied Owner Occupied CRE Portfolio Hotel/Motel 0.7% Office Building 33.1% Office/Warehouse 24.0% Retail 14.5% Commercial Building 10.9% Other 16.8% Total CRE - Owner Occupied 100.0% 0.7% 33.1% 24.0% 14.5% 10.9% 16.8% C&D Composition C&D Portfolio Raw Land 5.8% Vacant Residential Lots 8.9% Vacant Commercial Lots 15.2% Land Development - Residential 17.8% Residential Construction - OORE 4.9% Residential Construction - Non OORE 11.2% Commercial Construction - Retail 6.1% Commercial Construction - Office 8.3% Commercial Construction - Apartment/Multi-Family 13.6% Commercial Construction - Other 8.3% Total C&D 100.0% 5.8% 8.9% 15.2% 17.8% 4.9% 11.2% 6.1% 8.3% 13.6% 8.3% Note: Dollars in millions. Data is as of September 30, 2024. Percentages based on loan balances before accounting adjustments. (1) Geographic composition detail reflects borrower zip code on file in loan source files. Does not necessarily reflect zip code or location of loan collateral. (2) Represents the largest loan in each portfolio net of balances sold to other institutions. (3) Represents the outstanding principal balance of all loans maturing between October 1, 2024, through September 30, 2025. LOAN COMPOSITION: COMMERCIAL REAL ESTATE C&D Highlights • $654.4 million total portfolio • $26.7 million largest relationship(2) • $590 thousand average loan size • $275.8 million maturing over the next 12-months(3) • Dallas, Baton Rouge and Covington represent top 3 geographies within C&D and comprise 38.5% of all C&D loans or $251.8 million Owner-Occupied Highlights • $936.7 million total portfolio • $14.7 million largest relationship(2) • $809 thousand average loan size • $74.1 million maturing over the next 12- months(3) • Baton Rouge, Houston and New Orleans represent top 3 geographies within owner-occupied and comprise 25.5% of all owner-occupied loans or $239.0 million Income Producing Highlights • $1.13 billion total portfolio • $28.1 million largest relationship(2) • $1.86 million average loan size • $110.3 million balance maturing over the next 12-months(3) • Dallas, Baton Rouge and Covington represent top 3 geographies within income producing and comprise 31.0% of all income producing loans or $350.7 million $654.4 million $936.7 million $1.13 billion $654.4 million $936.7 million $1.13 billion

28 Office CRE – Income-Producing by Geography(1)(2) Office CRE – Owner-Occupied by Geography(1)(2) Office C&D by Geography(1)(2) Note: Dollars in millions, unless otherwise noted. Above loan balances reflect outstanding principal bank balance, net of loan participations, as of September 30, 2024. (1) Geographic composition detail reflects borrower zip code on file in loan source files. Does not necessarily reflect zip code or location of loan collateral. (2) Office C&D, Owner-Occupied CRE, and Income-Producing CRE office detail exclude office warehouse loans. LOAN COMPOSITION: OFFICE LENDING BY GEOGRAPHY 33.4% 19.2% 18.6% 9.3% 8.7% 10.8% Office C&D Dallas, TX 33.4% Frisco, TX 19.2% Baton Rouge, LA 18.6% Katy, TX 9.3% Plano, TX 8.7% Other Geographies 10.8% Total Office C&D 100.0% $654.4MM Total C&D $29.2MM Office C&D 11.7% 9.5% 6.4% 5.6% 4.7% 62.0% Owner Occupied Office CRE Baton Rouge, LA 11.7% Cov ington, LA 9.5% Houston, TX 6.4% Grapevine, TX (DFW) 5.6% Houma, LA 4.7% Other Geographies 62.0% Total OO Office CRE 100.0% $310.8MM Owner Occupied Office CRE $936.7MM Owner Occupied CRE 20.4% 18.4% 14.6% 7.9% 7.6% 31.1% $1.13B Income Producing CRE $265.3MM Income Producing Office CRE Income Producing Office CRE Dallas, TX 20.4% Houston, TX 18.4% Baton Rouge, LA 14.6% Shreveport, LA 7.9% Metairie, LA (NOLA) 7.6% Other Geographies 31.1% Total Inc. Prod. Office CRE 100.0% 23.4% Income Producing Office CRE 76.6% All Other Income Producing CRE 66.8% All Other Owner Occupied CRE 33.2% Owner Occupied Office CRE 95.5% All Other C&D 4.5% Office C&D Office C&D Highlights • $29.2 million total office C&D portfolio comprised of 15 loans in 9 distinct geographies throughout Texas and Louisiana • Largest C&D office loan is a $8.9 million credit in Dallas, TX • 100.0% of the office C&D portfolio is risk rated as pass watch or better Office CRE Owner-Occupied Highlights • $310.8 million total office CRE owner- occupied portfolio comprised of 363 loans in 99 distinct geographies throughout Texas and Louisiana • Largest office CRE owner-occupied loan is a $14.7 million credit in Grapevine (DFW), TX • 99.7% of the office CRE – owner-occupied portfolio is risk rated as pass watch or better Office CRE Income Producing Highlights • $265.3 million total office CRE income- producing portfolio comprised of 162 loans in 52 distinct geographies throughout Texas and Louisiana • Largest office CRE income producing loan is a $28.1 million credit in Houston, TX • 99.8% of the office CRE – income- producing portfolio is risk rated as pass watch or better (1)(2) (1)(2) (1)(2)

30 Note: Dollars in thousands. As of December 31. (1) Non-GAAP Financial measure. See appendix for applicable reconciliation. (2) Preliminary consolidated capital ratios as of 9/30/2024. Total Capital Ratio not available for FY 2020 due to the bank’s use of the Community Bank Leverage Ratio. (3) Excludes SBA PPP loans. (4) Calculated at the bank level based on preliminary FDIC call report data. (5) Past due and nonaccrual loan amounts exclude purchased impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. This was applicable to all periods 12/31/2022, and prior. The guidance and methodology were changed beginning 1/1/2023, due to CECL adoption. HISTORICAL FINANCIAL SUMMARY YTD 2019 2020 2021 2022 2023 2024 Balance Sheet & Capital Total Assets $2,273,835 $4,160,360 $4,726,378 $5,990,460 $6,584,550 $6,888,649 Gross Loans (Excl. HFS) 1,710,265 2,991,355 3,189,608 4,606,176 4,992,785 5,220,118 Deposits 1,782,010 3,616,679 4,077,283 4,820,345 5,248,790 5,640,946 Total Equity 285,097 409,963 433,368 580,481 644,259 699,524 Tangible Common Equity / Tangible Assets(1) 10.36 % 8.45 % 7.76 % 6.89 % 7.28 % 7.75 % Tier 1 Leverage Ratio(2) 10.56 8.79 8.14 9.49 9.52 9.61 Total Risk-based Capital Ratio(2) 13.30 -- 11.94 12.75 12.85 12.99 Net Loans (Excl. HFS) / Assets 74.68 % 71.37 % 66.87 % 76.25 % 75.21 % 75.17 % Gross Loans (Excl. HFS) / Deposits 95.97 82.71 78.23 95.56 95.12 92.54 NIB Deposits / Deposits 22.38 32.19 31.66 32.14 24.75 21.11 Commercial Loans / Loans (Excl. HFS)(3) 22.83 21.60 22.62 25.05 27.22 28.67 C&D / Total Risk-Based Capital(4) 95.9 % 106.0 % 117.0 % 109.8 % 91.7 % 84.7 % CRE / Total Risk-Based Capital(4) 222.4 262.0 250.1 272.1 253.5 250.5 Asset Quality NPLs / Loans (Excl. TDRs)(5) 0.53 % 0.35 % 0.41 % 0.25 % 0.34 % 0.50 % NPAs / Assets (Excl. TDRs)(5) 0.58 0.48 0.31 0.21 0.28 0.40 Reserves / Loans (Excl. HFS) 0.71 0.74 0.91 0.83 0.81 0.81 NCOs / Average Loans 0.10 0.06 0.03 0.04 0.11 0.06 Profitability Ratios Net Income Available to Common Shareholders $23,772 $29,994 $52,136 $52,905 $65,642 $44,568 ROAA 1.11 % 0.88 % 1.18 % 0.97 % 1.04 % 0.89 % ROACE 8.70 8.42 12.25 11.59 12.36 10.08 Net Interest Margin 4.10 % 4.06 % 3.84 % 3.92 % 3.62 % 3.43 % Efficiency Ratio 64.37 67.75 61.84 65.26 61.61 66.02 Non-Interest Income / Avg. Assets 0.50 0.63 0.80 0.54 0.62 0.64 Non-Interest Expense / Avg. Assets 2.74 2.95 2.66 2.73 2.47 2.54 For the Fiscal Year Ended December 31,

31 COMMERCIAL REAL ESTATE – HISTORICAL PERFORMANCE Note: Dollars in thousands. (1) Calculated at the bank level based on preliminary FDIC call report data. (2) Based on outstanding loan balances prior to accounting adjustments. Percentage based on CRE loans outstanding. (3) Past due and nonaccrual loan amounts exclude purchased impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. This was applicable to all periods 12/31/2022, and prior. The guidance and methodology were changed beginning 1/1/2023, due to CECL adoption. (4) All charge-offs are YTD through period noted. Q4'18 Q4'19 Q4'20 Q4'21 Q4'22 Q4'23 Q3'24 Construction - 1-4 Family Residential 55,485$ 60,780$ 68,503$ 90,861$ 109,629$ 117,128$ 105,462$ Other Const, Development, Vacant Land & Lots 155,569 183,401 334,562 457,667 612,445 552,670 548,894 Total Construction 211,054 244,181 403,065 548,528 722,074 669,798 654,356 % of Total Loans (1) 13.8% 14.3% 13.5% 17.2% 15.7% 13.4% 12.5% % of Total Bank Capital 94.1% 95.9% 106.0% 117.0% 116.7% 97.6% 89.9% Multi-Family Properties 39,273 36,454 95,707 97,508 98,637 108,432 148,355 Commercial Rental 226,723 284,795 496,198 525,977 967,915 1,072,280 1,132,284 Other Loans for Real Estate Purposes 10,286 708 736 500 409 481 231 Total Outstanding CRE Exposure 487,336$ 566,138$ 995,706$ 1,172,513$ 1,789,035$ 1,850,991$ 1,935,226$ % of Total Loans (1) 31.9% 33.1% 33.3% 36.7% 38.8% 37.1% 37.1% % of Total Bank Capital 217.2% 222.4% 262.0% 250.1% 289.1% 269.7% 266.0% Credit Ratings(2) Pass-Watch / Special Mention % 1.6% 0.5% 1.7% 2.7% 3.0% 2.4% 8.2% Classified % 0.9% 0.9% 0.7% 1.2% 0.7% 0.6% 0.4% Total Watch List % 2.5% 1.4% 2.4% 3.9% 3.6% 3.0% 8.6% Past Dues(3) Nonaccrual Loans 550$ 1,449$ 1,578$ 1,701$ 1,250$ 4,569$ 6,575$ Past Due 90 days or more - - 77 - 4 - 56 Total Past Due 550$ 1,449$ 1,654$ 1,701$ 1,254$ 4,569$ 6,631$ Total Past Due / Total CRE Loans 0.1% 0.3% 0.2% 0.1% 0.1% 0.2% 0.3% Net Charge Offs YTD(4) (322)$ (2)$ 14$ 147$ (9)$ 1,982$ 675$ Net Charge Offs YTD / CRE Loans (0.07%) (0.00%) 0.00% 0.01% (0.00%) 0.11% 0.03%

32Note: Dollars in thousands except per share data. (1) Adjustments are net of tax. RECONCILIATION OF NON-GAAP FINANCIAL MEASURES 2019 2020 2021 2022 2023 Q3'23 Q4'23 Q1'24 Q2'24 Q3'24 Core Net Income: Net Income 23,772$ 29,994$ 52,136$ 52,905$ 65,642$ 19,104$ 14,474$ 12,220$ 15,856$ 16,492$ Adjustments(1): (72)$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ (543)$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ 568$ 277$ 799$ 566$ -$ -$ -$ (39)$ -$ -$ -$ -$ -$ -$ 341$ -$ 341$ -$ -$ -$ (84)$ (107)$ (299)$ 38$ 2,023$ -$ 1,974$ 1$ -$ 10$ (243)$ -$ (354)$ -$ (745)$ (735)$ (10)$ -$ -$ -$ -$ -$ -$ -$ (1,150)$ (408)$ -$ -$ -$ -$ -$ -$ 1,230$ 395$ -$ -$ -$ -$ -$ -$ -$ (530)$ -$ -$ -$ -$ -$ -$ -$ -$ 69$ -$ -$ -$ -$ -$ -$ -$ -$ -$ 603$ 7,832$ 407$ 4,236$ 215$ 2$ 62$ 626$ 417$ 319$ -$ -$ -$ -$ -$ -$ -$ -$ -$ 403$ Core Net Income 24,614$ 37,466$ 53,919$ 57,597$ 66,326$ 17,963$ 16,841$ 12,808$ 16,273$ 17,224$ Core Return on Average Assets: Net Income 23,772$ 29,994$ 52,136$ 52,905$ 65,642$ 19,104$ 14,474$ 12,220$ 15,856$ 16,492$ Core Net Income 24,545$ 37,466$ 53,919$ 57,597$ 66,326$ 17,963$ 16,841$ 12,808$ 16,273$ 17,224$ Average Assets 2,136,081$ 3,426,120$ 4,403,670$ 5,473,508$ 6,341,880$ 6,474,935$ 6,494,861$ 6,667,527$ 6,711,173$ 6,788,644$ ROAA 1.11% 0.88% 1.18% 0.97% 1.04% 1.17% 0.88% 0.74% 0.95% 0.97% Core ROAA 1.15% 1.09% 1.22% 1.05% 1.05% 1.10% 1.03% 0.77% 0.98% 1.01% ROACE 8.70% 8.42% 12.25% 11.59% 12.36% 14.16% 10.54% 8.51% 10.94% 10.76% Core ROACE 9.01% 10.51% 12.67% 12.62% 12.49% 13.32% 12.27% 8.92% 11.22% 11.23% Average Diluted Shares Outstanding 13,670,777 18,243,445 20,634,281 22,817,493 25,296,200 25,288,660 25,333,913 25,429,194 25,395,614 25,440,247 Diluted Earnings per Common Share 1.74$ 1.64$ 2.53$ 2.32$ 2.59$ 0.76$ 0.57$ 0.48$ 0.62$ 0.65$ Core Diluted Earnings per Common Share 1.80$ 2.05$ 2.61$ 2.52$ 2.62$ 0.71$ 0.66$ 0.50$ 0.64$ 0.68$ Net Interest Margin Excluding Loan Discount Accretion: Net Interest Income 80,198$ 127,646$ 153,884$ 199,577$ 215,129$ 55,294$ 53,760$ 51,531$ 54,009$ 56,114$ Adjustments: (2,602) (6,592) (7,750) (9,432) (9,311) (2,419) (1,921) (785) (1,695) (705) Adjusted Net Interest Income 77,596$ 121,054$ 146,134$ 190,145$ 205,818$ 52,875$ 51,839$ 50,746$ 52,314$ 55,409$ Average Interest-earning Assets 1,956,719$ 3,145,743$ 4,011,773$ 5,091,684$ 5,939,405$ 6,071,129$ 6,086,330$ 6,246,130$ 6,291,616$ 6,363,995$ Net Interest Margin 4.10% 4.06% 3.84% 3.92% 3.62% 3.61% 3.50% 3.32% 3.45% 3.51% 3.97% 3.85% 3.64% 3.73% 3.47% 3.46% 3.38% 3.27% 3.34% 3.46% Stock Option Exercises Early Lease Termination Penalty Acquisition-related expenses Core conversion expenses Loan purchase discount accretion Net Interest Margin excluding loan discount accretion (Gain)/Loss Former Bank Premises & Equipment Write-Down on Former Bank Premises (Gain)/Loss on Sale of Securities (Gain)/Loss on Sale of Banking Center (Gain)on extinguishment of debt Occupancy and bank premises-hurricane repair Core Net Income, ROAA, NIM excluding loan discount accretion For the Year Ended December 31, Fiscal Quarter Sale of Impaired Credit Insurance Reimbursement of storm expenditures, net of tax Employee Share Awards- NASDAQ Listing

33 Note: Dollars in thousands except per share data. (1) Adjustments are net of tax. RECONCILIATION OF NON-GAAP FINANCIAL MEASURES TTM Q4'23 Q1'24 Q2'24 Q3'24 Q3'24 Core Net Income: Net Income 14,474$ 12,220$ 15,856$ 16,492$ 59,042$ Adjustments(1): -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ (39)$ -$ -$ (39)$ 341$ -$ -$ -$ 341$ 1,974$ 1$ -$ 10$ 1,985$ (10)$ -$ -$ -$ (10)$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ 62$ 626$ 417$ 319$ 1,424$ -$ -$ -$ 403$ 403$ Core Net Income 16,841$ 12,808$ 16,273$ 17,224$ 63,146$ Core Return on Average Assets: Net Income 14,474$ 12,220$ 15,856$ 16,492$ 59,042$ Core Net Income 16,841$ 12,808$ 16,273$ 17,224$ 63,146$ Average Assets 6,494,861$ 6,667,527$ 6,711,173$ 6,788,644$ 6,665,551$ ROAA 0.88% 0.74% 0.95% 0.97% 0.89% Core ROAA 1.03% 0.77% 0.98% 1.01% 0.95% Average Diluted Shares Outstanding 25,333,913 25,429,194 25,395,614 25,440,247 25,399,742 Diluted Earnings per Common Share 0.57$ 0.48$ 0.62$ 0.65$ 2.32$ Core Diluted Earnings per Common Share 0.66$ 0.50$ 0.64$ 0.68$ 2.48$ Early Lease Termination Penalty Acquisition-related expenses Core conversion expenses Write-Down on Former Bank Premises (Gain)/Loss on Sale of Securities (Gain)/Loss on Sale of Banking Center (Gain)on extinguishment of debt Occupancy and bank premises-hurricane repair Stock Option Exercises Core Net Income and ROAA - Trailing Twelve Months Fiscal Quarter Sale of Impaired Credit Insurance Reimbursement of storm expenditures, net of tax Employee Share Awards- NASDAQ Listing (Gain)/Loss Former Bank Premises & Equipment

34 Note: Dollars in thousands except per share data. RECONCILIATION OF NON-GAAP FINANCIAL MEASURES Q3'23 Q4'23 Q1'24 Q2'24 Q3'24 Tangible Common Equity / Tangible Assets: Tangible Common Equity Total Shareholders' Equity 604,366$ 644,259$ 649,034$ 664,530$ 699,524$ Preferred Stock (71,930) (71,930) (71,930) (71,930) (71,930) Total Common Shareholders' Equity 532,436$ 572,329$ 577,104$ 592,600$ 627,594$ Adjustments: Goodwill (88,391) (88,391) (91,527) (91,527) (91,527) Core deposit and other intangibles (12,418) (11,895) (11,372) (10,849) (10,326) Total Tangible Common Equity 431,627$ 472,043$ 474,205$ 490,224$ 525,741$ Tangible Assets Total Assets 6,488,781$ 6,584,550$ 6,695,558$ 6,703,889$ 6,888,649$ Adjustments: Goodwill (88,391) (88,391) (91,527) (91,527) (91,527) Core deposit and other intangibles (12,418) (11,895) (11,372) (10,849) (10,326) Total Tangible Assets 6,387,972$ 6,484,264$ 6,592,659$ 6,601,513$ 6,786,796$ Common Equity to Total Assets 8.21% 8.69% 8.62% 8.84% 9.11% Tangible Common Equity to Tangible Assets 6.76% 7.28% 7.19% 7.43% 7.75% Tangible Book Value per Share: Tangible Common Equity Total Shareholders' Equity 604,366$ 644,259$ 649,034$ 664,530$ 699,524$ Preferred Stock (71,930) (71,930) (71,930) (71,930) (71,930) Total Common Shareholders' Equity 532,436$ 572,329$ 577,104$ 592,600$ 627,594$ Adjustments: Goodwill (88,391) (88,391) (91,527) (91,527) (91,527) Core deposit and other intangibles (12,418) (11,895) (11,372) (10,849) (10,326) Total Tangible Common Equity 431,627$ 472,043$ 474,205$ 490,224$ 525,741$ Adjustments: Exclude AOCI (94,236) (66,585) (71,634) (67,784) (46,144) Total Tangible Common Equity (excl. AOCI) 525,863$ 538,628$ 545,839$ 558,008$ 571,885$ Common shares outstanding 25,344,168 25,351,809 25,485,383 25,502,175 25,519,501 Book Value per Common Share 21.01$ 22.58$ 22.64$ 23.24$ 24.59$ Tangible Book Value per Common Share 17.03$ 18.62$ 18.61$ 19.22$ 20.60$ Tangible Book Value per Common Share (excl. AOCI) 20.75$ 21.25$ 21.42$ 21.88$ 22.41$ TCE/TA, TBVPS Fiscal Quarter

35 Note: Dollars in thousands except per share data. RECONCILIATION OF NON-GAAP FINANCIAL MEASURES 2019 2020 2021 2022 2023 Tangible Common Equity / Tangible Assets: Tangible Common Equity Total Shareholders' Equity 285,097$ 409,963$ 433,368$ 580,481$ 644,259$ Preferred Stock - - - (71,930) (71,930) Total Common Shareholders' Equity 285,097$ 409,963$ 433,368$ 508,551$ 572,329$ Adjustments: Goodwill (48,495) (53,862) (59,894) (88,543) (88,391) Core deposit and other intangibles (6,694) (9,734) (12,203) (14,042) (11,895) Total Tangible Common Equity 229,908$ 346,367$ 361,271$ 405,966$ 472,043$ Tangible Assets Total Assets 2,273,835$ 4,160,360$ 4,726,378$ 5,990,460$ 6,584,550$ Adjustments: Goodwill (48,495) (53,862) (59,894) (88,543) (88,391) Core deposit and other intangibles (6,694) (9,734) (12,203) (14,042) (11,895) Total Tangible Assets 2,218,646$ 4,096,764$ 4,654,281$ 5,887,875$ 6,484,264$ Common Equity to Total Assets 12.54% 9.85% 9.17% 8.49% 8.69% Tangible Common Equity to Tangible Assets 10.36% 8.45% 7.76% 6.89% 7.28% Tangible Book Value per Share: Tangible Common Equity Total Shareholders' Equity 285,097$ 409,963$ 433,368$ 580,481$ 644,259$ Preferred Stock - - - (71,930) (71,930) Total Common Shareholders' Equity 285,097$ 409,963$ 433,368$ 508,551$ 572,329$ Adjustments: Goodwill (48,495) (53,862) (59,894) (88,543) (88,391) Core deposit and other intangibles (6,694) (9,734) (12,203) (14,042) (11,895) Total Tangible Common Equity 229,908$ 346,367$ 361,271$ 405,966$ 472,043$ Adjustments: Exclude AOCI 2,613 10,628 (1,177) (74,204) (66,585) Total Tangible Common Equity 227,295$ 335,739$ 362,448$ 480,170$ 538,628$ Common shares outstanding 13,279,363 20,621,437 20,400,349 25,110,313 25,351,809 Book Value per Common Share 21.47$ 19.88$ 21.24$ 20.25$ 22.58$ Tangible Book Value per Common Share 17.31$ 16.80$ 17.71$ 16.17$ 18.62$ Tangible Book Value per Common Share (excl. AOCI) 17.12$ 16.28$ 17.77$ 19.12$ 21.25$ TCE/TA, TBVPS For the Year Ended December 31,

36 RECONCILIATION OF NON-GAAP FINANCIAL MEASURES Note: Dollars in thousands. (1) Excludes gains/losses on sales of securities. TTM Q3'23 Q4'23 Q1'24 Q2'24 Q3'24 12/31/2022 12/31/2023 Q3'24 Core Efficiency Ratio: Noninterest Expense 38,607$ 39,714$ 42,522$ 43,110$ 42,450$ 149,409$ 156,702$ 167,796$ Core Adjustments (2)$ (495)$ (715)$ (419)$ (830)$ (5,679)$ (668)$ (2,459)$ Net Interest and Noninterest Income 65,177$ 62,676$ 60,918$ 66,185$ 66,901$ 228,935$ 254,336$ 256,680$ Core Adjustments (1,449)$ (13)$ (50)$ -$ -$ 30$ (2,403)$ (63)$ Efficiency Ratio(1) 59.23% 63.36% 69.80% 65.14% 63.45% 65.26% 61.61% 65.37% Core Efficiency Ratio 60.58% 62.59% 68.68% 64.50% 62.21% 62.77% 61.93% 64.43% Core Efficiency Ratio Fiscal Quarter Fiscal Year Ended

37 RECONCILIATION OF NON-GAAP FINANCIAL MEASURES Note: Dollars in thousands. Q3'23 Q4'23 Q1'24 Q2'24 Q3'24 Core pre-tax, pre-provision earnings: Pre-tax, pre-provision earnings 26,570$ 20,459$ 18,395$ 23,075$ 24,438$ Adjustments: Sale of Impaired Credit -$ -$ -$ -$ -$ -$ -$ (50)$ -$ -$ -$ 432$ -$ -$ -$ -$ 2,503$ 1$ -$ 13$ (932)$ (13)$ -$ -$ -$ (517)$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ 2$ 63$ 715$ 419$ 319$ -$ -$ -$ -$ 511$ Core pre-tax, pre-provision earnings 25,123$ 23,444$ 19,061$ 23,494$ 25,281$ (Gain) on Extinguishment of Debt Occupancy and bank premises- hurricane repair Insurance reimbursement of storm expenditures Acquisition-related expenses Core conversion expenses Core Pre-tax, Pre-provision Earnings Fiscal Quarter (Gain)/Loss Former Bank Premises & Equipment Write-Down on Former Bank Premises (Gain)/Loss on Sale of Securities (Gain)/Loss on Sale of Banking Center