1 1Q25 Update (Nasdaq: BHRB) April 2025

2 Cautionary Statement Regarding Forward-Looking Information This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, with respect to the beliefs, goals, intentions, and expectations of the Company regarding revenues, earnings, earnings per share, loan production, asset quality, and capital levels, among other matters; our estimates of future costs and benefits of the actions we may take; our assessments of expected losses on loans; our assessments of interest rate and other market risks; our ability to achieve our financial and other strategic goals; and other statements that are not historical facts. Forward–looking statements are typically identified by such words as “believe,” “expect,” “anticipate,” “intend,” “outlook,” “estimate,” “forecast,” “project,” “will,” “should,” and other similar words and expressions, and are subject to numerous assumptions, risks, and uncertainties, which change over time. Additionally, forward–looking statements speak only as of the date they are made; the Company does not assume any duty, does not undertake, and specifically disclaims any obligation to update such forward–looking statements, whether written or oral, that may be made from time to time, whether because of new information, future events, or otherwise, except as required by law. Furthermore, because forward–looking statements are subject to assumptions and uncertainties, actual results or future events could differ, possibly materially, from those indicated in or implied by such forward-looking statements because of a variety of factors, many of which are beyond the control of the Company. Further, factors identified herein are not necessarily all of the factors that could cause the Company’s actual results, performance or achievements to differ materially from those expressed in or implied by any of the forward-looking statements. Other factors, including unknown or unpredictable factors, also could harm the Company. Accordingly, you should consider all of these risks, uncertainties and other factors carefully in evaluating all such forward-looking statements made by the Company and not place undue reliance on forward-looking statements. The risks and uncertainties that could cause actual results to differ from those described in the forward-looking statements include, but are not limited to, the following: costs or difficulties associated with newly developed or acquired operations; changes in general economic, political, or market trends (either nationally or locally in the areas in which we conduct, or will conduct, business), including inflation, changes in interest rates, market volatility and monetary fluctuations, and changes in federal government policies and practices, as well as the impact from recently announced and future tariffs on the markets we serve; increased competition; changes in consumer confidence and demand for financial services, including changes in consumer borrowing, repayment, investment, and deposit practices; changes in asset quality and credit risk; our ability to control costs and expenses; adverse developments in borrower industries or declines in real estate values; changes in and compliance with federal and state laws and regulations that pertain to our business and capital levels; our ability to raise capital as needed; the impact, extent and timing of technological changes; the effects of any cybersecurity breaches; and the other factors discussed in the “Risk Factors” and “Management's Discussion and Analysis of Financial Condition and Results of Operations” section of the Company's Annual Report on Form 10–K for the year ended December 31, 2024, the Company's Quarterly Reports on Form 10-Q for the quarters ended March 31, 2024, June 30, 2024, September 30, 2024, and other reports the Company files with the SEC. Non-GAAP Financial Measures This presentation contains certain financial measures determined by methods other than in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Such non-GAAP financial measures may include the following: fully tax-equivalent net interest margin, core operating earnings, core net income, tangible book value per common share, total risk-based capital ratio, tier one leverage ratio, tier one capital ratio, and the tangible common equity to tangible assets ratio. Management uses these non-GAAP financial measures to assess the performance of the Company’s core business and the strength of its capital position. Management believes that these non-GAAP financial measures provide meaningful additional information about the Company to assist investors in evaluating operating results, financial strength, and capitalization. The non-GAAP financial measures should be considered as additional views of the way our financial measures are affected by significant charges for credit costs and other factors. These non-GAAP financial measures should not be considered as a substitute for operating results determined in accordance with GAAP and may not be comparable to other similarly titled measures of other companies. The computations of the non-GAAP financial measures used in this presentation are referenced in a footnote or in the appendix to this presentation.

3 Introduction • Thank you for your interest in Burke & Herbert Financial Services Corp., and its wholly owned subsidiary Burke & Herbert Bank & Trust Company. As a community banking institution, we are headquartered in Old Town Alexandria, Virginia, and have served the banking, borrowing and investing needs of businesses, organizations, families, and individuals since 1852. • As a true community bank, we are deeply tied to the people, neighborhoods, and institutions where we live and work. Our employees form a diverse, dedicated, close-knit team that upholds a culture of customer service and forges strong and lasting relationships with our customers and shared communities. We are selective in our hiring, proud of the caliber of our people, and encourage a collegial environment in which each individual feels valued. • We strive to be your quintessential community bank that delivers extraordinary experiences and top-quartile results, while staying true to our values and remaining focused on what we can control.

4 Overview 173 Years Providing Service Beyond Expectations Total Assets $7.8 Billion Total Gross Loans $5.6 Billion Total Deposits $6.5 Billion Return on Average Assets 1.41% Return on Average Equity 14.57% More than 75 locations across 5 states Financial results for the quarter ended March 31, 2025; Returns are annualized Headquarters: Alexandria, VA Corporate Centers: Kingstowne, VA Moorefield, WV

5 Core Values $2.5MM Elevate Everyone We embrace our differences and respect everyone's unique contributions. We seek to empower individuals through our actions and words because we believe that when one succeeds, we all succeed. Always Invested We take ownership and responsibility for our work and are invested in the long-term success of our customers, colleagues, and communities. Serve & Lead We are dedicated to serving our customers and our teams, leading with quiet confidence and integrity to inspire the trust of all those we serve. Deliver More We're driven to go above and beyond, continually innovating and improving on how we deliver the best possible experiences and outcomes for all those we serve. Driven by our values, we endeavor to be your quintessential community bank — delivering service beyond expectations

6 Investment Strategy $2.5MM • Oldest continuously operated bank in Virginia with 170+ years of trust • Multi-generational customer relationships, deeply imbedded in the community • Publicly traded yet maintains a family-owned culture with a long-term view Future Growth and Innovation – Three Pillars of our Strategic Plan Continue to Maintain & Expand Our Trusted Advisor Relationship Model Profitably Expand our Market Share Grow Our Fee-Based Sources of Revenue • Well-capitalized and resilient with low earnings volatility across economic cycles • Desired moderate risk profile with a fortress balance sheet • Stable deposit base with loyal customer retention • Our goal is to consistently deliver top quartile returns relative to our peers • Headquartered in historic Alexandria, VA, a prime location in the D.C. metro area • Strong presence in Northern VA’s affluent, high-income markets • Significant M&A and organic opportunities for deeper market penetration • Relationship-driven banking model vs. larger impersonal regional and super- regional banks • Faster, local decision-making for businesses and individuals • Longstanding trust gives us a competitive edge in our markets • A seasoned management team with large bank experience Unmatched Legacy & Reputation Strong & Consistent Financial Performance Market Leadership in a High-Growth Region Community Banking with a Competitive Edge

7 1Q25 At a Glance Highlights • Our objective is to build and maintain a fortress balance sheet - Maintain credit discipline through the cycle - Ensure proper allowances for credit losses - Stay liquid and have multiple sources of liquidity - Manage capital for the long term - Stress test the balance sheet for severe shocks - Maintain relatively neutral interest rate position - Continually improve risk, governance, and controls - Operate an effective risk-adjusted return culture Loan to Deposit Ratio 86.3% Uninsured Deposit % 29.7% Net Interest Margin1 4.18% Annualized Efficiency Ratio 59.8% Tangible Book Value1 $44.17 per common share Financial results for the quarter ended March 31, 2025 $27.2 million Net Income $1.80 Diluted Earnings per Share (EPS) +27 bps QoQ Net Interest Margin1 1.20% Allowance Coverage Ratio 14.73% Total Risk-Based Capital Ratio2 (1) Net interest margin and tangible book value are non- GAAP financial measures (see Appendix). (2) Estimated. Built for the Long-Term

8 Loan Portfolio as of 1Q25 ($ in 000s) Residential $1,161,406 Owner-Occupied CRE $589,889 Commercial & Industrial $613,219 AD&C $322,963 Consumer $150,457 Commercial Real Estate $2,809,573 Loans, gross $5,647,507 Loan Segment Adjustable Rate Fixed Rate Commercial Real Estate $ 1,245,137 $ 1,564,436 Residential 568,547 592,859 Owner-occupied CRE 303,113 286,776 AD&C 230,807 92,156 Commercial & Industrial 417,781 195,438 Consumer 110,844 39,613 $ 2,876,229 $ 2,771,278 • The commercial real estate (CRE) portfolio is well-diversified across asset classes: - CRE + AD&C as a percentage of Bank total risk-based capital is estimated at 332% - AD&C as a percentage of Bank total risk-based capital is estimated at 34% • The CRE loan portfolio geographic footprint is spread across the West Virginia and greater DC / Maryland / Virginia (DMV) area with minimal office building exposure within Washington D.C. • In line with our overall strategy, we are focused on commercial & industrial loan growth and greater portfolio granularity Commercial Real Estate Category $ by Asset Class % by Asset Class Retail Real Estate $ 605,666 22% Multi-Family 520,362 19% Office Bldgs. / Condos 461,164 16% Hotels / Motels 389,077 14% Industrial / Warehouse 277,562 10% Other 234,546 8% Nursing-Assisted Living 132,556 5% Self-Storage 117,463 4% Restaurants and Gas Stations 71,177 2% $ 2,809,573 100% 1Q25 Highlights

9 Security Portfolio as of 1Q25 ($ in 000s) U.S Treasury & Agency $151,793 Municipal $716,545 Agency RMBS $53,893 Non-Agency RMBS $246,032 Agency CMBS $40,811 Non-Agency CMBS $135,010 Asset-Backed $60,786 Other $31,999 AFS Portfolio FV $1,436,869 • Portfolio duration is approximately 4.6 years • 72% of unrealized losses have a duration of approximately 5.6 years; remainder less than 2.5 years • Unrealized losses are the result of the interest rate environment • AOCI accretion is expected to be approximately 5.5% per quarter assuming a stagnant interest rate environment • The current portfolio is held as available-for-sale, and there is no intent to reclassify any part • Majority of non-agency CMBS and ABS are equity enhanced through structure and credit support Category Net Unrealized Losses Amortized Cost WA Yield U.S. Treasury & Agency $ 13,448 $ 165,241 1.31% Municipal 79,044 795,589 2.80% Agency RMBS 3,411 57,304 3.57% Non-Agency RMBS 8,478 254,510 4.07% Agency CMBS 791 41,602 4.73% Non-Agency CMBS 2,781 137,791 3.73% Asset-Backed 610 61,396 5.66% Other 929 32,928 7.37% $ 109,492 $ 1,546,361 3.23% 1Q25 Highlights Unrealized losses (net of taxes) impacts book value by $5.63 per common share

10 Funding Sources as of 1Q25 ($ in 000s) Demand (non- interest) $1,382,427 Demand (interest) $2,224,844 Money Market & Savings $1,667,447 Brokered CDs $246,902 Time Deposits & Other $1,020,251 Deposits $6,541,871 Category Average Rate QTD Demand (non-interest bearing) − % Demand (interest bearing) 2.16 % Money Market & Savings 2.02 % Brokered CDs 4.60 % Time Deposits 3.68 % Total Interest-Bearing Deposits 2.53 % Total Deposits 1.99%0 • Loan-to-deposit ratio of 86.3% • Brokered deposits represent 3.8% of total deposits • Uninsured deposits totaled $1.9 billion, representing 29.7% of total deposit balance • Stress tests are performed on liquidity and capital on a quarterly basis • We believe we have ample liquidity to withstand significant stress 1Q25 Highlights Short-term borrowings total $300 million with total unused borrowing capacity of $4.1 billion Short-term borrowings average rate for 1Q25 was 3.88%

11 Capital Ratio Trends1,2 16.6% 10.9% 11.4% 11.5% 11.7% 1Q24 2Q24 3Q24 4Q24 1Q25 Common Equity Tier 1 Ratio 16.6% 11.3% 11.8% 12.0% 12.1% 1Q24 2Q24 3Q24 4Q24 1Q25 Tier 1 Capital Ratio 17.5% 13.9% 14.5% 14.6% 14.7% 1Q24 2Q24 3Q24 4Q24 1Q25 Total Capital Ratio 11.4% 9.0% 9.7% 9.8% 10.1% 1Q24 2Q24 3Q24 4Q24 1Q25 Leverage Ratio Capital Management • We take a forward-looking, disciplined approach to capital management that emphasizes acceptable risk-adjusted returns over the long-term • Our capital management priorities include - Supporting customers - Funding business investments - Maintaining appropriate capital in light of economic conditions and regulatory expectations - Returning excess capital to shareholders • Modeled stress scenarios include evaluating the impact of deposit shocks, interest rate scenarios, and general balance sheet repositioning • Stress scenarios result in capital levels well above well-capitalized levels (1) All 1Q25 capital ratios are estimated. (2) Note: The merger with Summit Financial Group, Inc., occurred during 2Q24.

12 Asset Quality Trends 1.16% 1.21% 1.22% 1.20% 1.20% 1Q24 2Q24 3Q24 4Q24 1Q25 Allowance Coverage Ratio 92.0% 207.1% 189.1% 177.3% 104.6% 1Q24 2Q24 3Q24 4Q24 1Q25 Allowance for Credit Losses / NPLs 1.26% 0.58% 0.64% 0.68% 1.15% 1Q24 2Q24 3Q24 4Q24 1Q25 NPLs / Total Loans • Our objective is to maintain a moderate risk profile through the economic cycle • Credit risk management is embedded in our risk culture and in our decision-making processes - Managed through specific policies and processes - Measured and evaluated against our risk appetite and credit concentration limits - Reported, along with specific mitigation activities, to management and the Board of Directors through our governance structure • Loan reviews include ongoing monitoring procedures that involve additional stress testing of interest rate movements and collateral performance Credit Management 0.5 5.4 2.0 5.2 8.5 1Q24 2Q24 3Q24 4Q24 1Q25 NCOs / Average Loans (annualized) in bps

13 Final Thoughts • Our business model is built on customer service and is designed to consistently deliver top quartile returns relative to our peers • Our approach is concentrated on growing and deepening relationships across our businesses that meet our risk/return measures • We are focused on our strategic priorities which are designed to enhance value over the long term - Being a trusted advisor - Growing fee revenue - Profitably expanding our markets • We take the long-view and maintain a moderate risk profile through the economic cycle

14 Appendix: Income Statement and Per Share Information Income Statement ($ in 000s) March 31, Dec. 31, Sept. 30, June 30, March 31, 2025 2024 2024 2024 2024 Per common share information Interest income $ 110,786 $ 112,793 $ 118,526 $ 96,097 $ 38,745 Interest expense 37,799 42,083 45,347 36,332 16,614 Noninterest income 10,023 11,791 10,616 9,505 4,254 Total revenue (non-GAAP) 83,010 82,501 83,795 69,270 26,385 Noninterest expense 49,664 61,410 50,826 64,432 21,165 Pretax, pre-provision earnings (non-GAAP) 33,346 21,091 32,969 4,838 5,220 Provision for (recapture of) credit loss 501 833 147 23,910 (670) Income (loss) before income taxes 32,845 20,258 32,822 (19,072) 5,890 Income tax expense (benefit) 5,644 465 5,200 (2,153) 678 Net income (loss) 27,201 19,793 27,622 (16,919) 5,212 Preferred stock dividends 225 225 225 225 - Net income (loss) applicable to common shares $ 26,976 $ 19,568 $ 27,397 $ (17,144) $ 5,212 Basic earnings $ 1.80 $ 1.31 $ 1.83 $ (1.41) $ 0.70 Diluted earnings 1.80 1.30 1.82 (1.41) 0.69 Cash dividends 0.55 0.55 0.53 0.53 0.53 Book value 49.90 48.08 48.63 45.72 42.92 Tangible book value 44.17 42.06 42.32 39.11 42.92

15 Appendix: Balance Sheet Trends March 31, Dec. 31, Sept. 30, June 30, March 31, 2025 2024 2024 2024 2024Balance Sheet (at period end), $ in 000s Assets 7,838,090$ 7,812,185$ 7,864,913$ 7,810,193$ 3,696,390$ Average interest-earning assets 7,171,931 7,273,770 7,238,636 5,994,383 3,377,092 Loans (gross) 5,647,507 5,672,236 5,574,037 5,616,724 2,118,155 Loans (net) 5,579,754 5,604,196 5,506,220 5,548,707 2,093,549 Securities, available-for-sale, at fair value 1,436,869 1,432,371 1,436,431 1,414,870 1,275,520 Intangible assets 53,002 57,300 61,598 65,895 - Goodwill 32,842 32,783 32,783 32,783 - Non-interest bearing deposits 1,382,427 1,379,940 1,392,123 1,397,030 822,767 Interest-bearing deposits 5,159,444 5,135,299 5,208,702 5,242,541 2,167,346 Deposits, total 6,541,871 6,515,239 6,600,825 6,639,571 2,990,113 Brokered deposits 246,902 244,802 345,328 403,668 370,847 Uninsured deposits 1,943,227 1,926,724 1,999,403 1,931,786 700,846 Short-term borrowings 300,000 365,000 320,163 285,161 360,000 Subordinated debt, net 113,289 111,885 110,482 109,064 - Unused borrowing capacity 4,082,879 4,092,378 2,353,963 2,162,112 704,233 Total equity 758,000 730,157 738,059 693,126 319,308 Total common equity 747,587 719,744 727,646 682,713 319,308 Accumulated other comprehensive income (loss) (88,024) (95,720) (75,758) (100,430) (100,954)

16 Appendix: Notes on Non-GAAP Financial Measures Total Common Equity, Tangible Book Value & Tangible Assets: Tangible common equity measures are capital adequacy metrics that may be meaningful to the Company, as well as analysts and investors, in assessing the Company's use of equity and in facilitating comparisons with peers. These non-GAAP measures are valuable indicators of a financial institution's capital strength since they eliminate intangible assets from stockholders' equity and retain the effect of accumulated other comprehensive income/(loss) in stockholders' equity. March 31, Dec. 31, Sept. 30, June 30, March 31, 2025 2024 2024 2024 2024 Common Shareholders’ Equity $ 747,587 $ 719,744 $ 727,646 $ 682,713 $ 319,308 Less: Goodwill and intangible assets, net 85,844 90,083 94,381 98,678 - Tangible common equity (non- GAAP) 661,743 629,661 633,265 584,035 319,308 Shares outstanding at end of period 14,982,807 14,969,104 14,963,003 14,932,169 7,440,025 Tangible book value per common share $ 44.17 $ 42.06 $ 42.32 $ 39.11 $ 42.92 Total Assets 7,838,090 7,812,185 7,864,913 7,810,193 3,696,390 Less: Goodwill and Intangible assets, net 85,844 90,083 94,381 98,678 - Tangible assets (non-GAAP) $ 7,752,246 $ 7,722,102 $ 7,770,532 $ 7,711,515 $ 3,696,390

17 Appendix: Notes on Non-GAAP Financial Measures Total Revenue: Total revenue is a non-GAAP measure and is derived from total interest income less total interest expense plus total non- interest income. We believe that total revenue is a useful tool to determine how the Company is managing its business and demonstrates how stable our revenue sources are from period to period. March 31, Dec. 31, Sept. 30, June 30, March 31, 2025 2024 2024 2024 2024 Interest income $ 110,786 $ 112,793 $ 118,526 $ 96,097 $ 38,745 Interest expense 37,799 42,083 45,347 36,332 16,614 Non-interest income 10,023 11,791 10,616 9,505 4,254 Total revenue (non-GAAP) $ 83,010 $ 82,501 $ 83,795 $ 69,270 $ 26,385

18 Appendix: Notes on Non-GAAP Financial Measures March 31, Dec. 31, Sept. 30, June 30, March 31, 2025 2024 2024 2024 2024 Net Interest Margin: The interest income earned on certain earning assets is completely or partially exempt from federal income tax. As such, these tax-exempt instruments typically yield lower returns than taxable investments. To provide more meaningful comparisons of net interest income, we use net interest income on a fully taxable-equivalent (FTE) basis by increasing the interest income earned on tax-exempt assets to make it fully equivalent to interest income earned on taxable investments. FTE net interest income is calculated by adding the tax benefit on certain financial interest earning assets, whose interest is tax-exempt, to total interest income then subtracting total interest expense. Management believes FTE net interest income is a standard practice in the banking industry, and when net interest income is adjusted on an FTE basis, yields on taxable, nontaxable, and partially taxable assets are comparable; however, the adjustment to an FTE basis has no impact on net income and this adjustment is not permitted under GAAP. FTE net interest income is only used for calculating FTE net interest margin, which is calculated by annualizing FTE net interest income and then dividing by the average earning assets. Net interest income $ 72,987 $ 70,710 $ 73,179 $ 59,765 $ 22,131 Taxable-equivalent adjustments 881 858 847 688 362 Net interest income (Fully Taxable-Equivalent - FTE) $ 73,868 $ 71,568 $ 74,026 $ 60,453 $ 22,493 Average interest-earning assets $ 7,171,931 $ 7,273,770 $ 7,238,636 $ 5,994,383 $ 3,377,092 Net interest margin (non-GAAP) 4.18% 3.91% 4.07% 4.06% 2.68%