Mainstreet Bancshares, Inc. · NASDAQ:MNSB
Mainstreet Bancshares — Q1 2026 Earnings Presentation
23 slides from Mainstreet Bancshares's earnings presentation, Apr 20, 2026
Slide 1: 2026 Q1 Financial Highlights
April 20, 2026 2026 Q1 Financial Highlights = MainStreetBancshares, Inc.
Slide 2: Forward-looking statements and additional information
Forward-looking statements and additional information Statements in this presentation which are not historical are “forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private
Slide 3: Excellent market driven by diverse businesses
Excellent market driven by diverse businesses Major universities Georgetown cw ‘American Howard George Mason Gallaudet Catholic umuc Marymount Resident Fortune 500 © Under Armour «Amazon * Google * Boeing © Marriott * Raytheon Federal hub ‘+ Defense contracting = CaCI ‘* Lockheed Martin FT © SAIC Ot
Slide 4: Good things continue to happen in the DC Market
Good things continue to happen in the DC Market The DC Metropolitan area is vibrant with opportunity Median household Average income* listing price? Median days on the Government employees in market? the DMV? * Federal Reserve Econorric Data — Year End 2024 — Fairfax (VA), Loudoun (VA), ‘Alington (V
Slide 5: Strategic balance sheet management
Strategic balance sheet management Stok § Bogan vadng on ore Dee 2014 12am Private Placement ‘of Common Stock uy2018 Fo Holding Began Trading on orcax $236 $240 $263 $272 $21 sis6 TTT =n 8 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2
Slide 6: Rooted in community
Rooted in community branch-lite structure Headquarters: Fairfax, VA Full-time employees: 168 Assets per employee: $13,234M Holding company established: 2016 MNSB LOCATIONS: Northern Virginia & Washington, D.C. Operctions Center located ot shaw Rood location.
Slide 7: Middleburg market contributes over $100 million in deposits
Middleburg market contributes over $100 million in deposits at less than 1.00% Middleburg branch grand opening growing within our communities April 8th, 2026
Slide 8: MainStreet Bancshares, Inc. trades on the Russell 2000 Index
MainStreet Bancshares, Inc. trades on the Russell 2000 Index MainStreet Bancshares, Inc. MNSB Close common stock price $22.20 Price / tangible book value 87% Common shares 7,324,049 Market capitalization $163 million Tangible book value $25.63 MNSBP Close preferred stock price $24.95 “
Slide 9: 2026 first quarter financial summary
2026 first quarter financial summary > = EPS $0.48 $0.46 $0.52 $0.53 $0.25 a g ROAA? 0.76% 0.75% 0.85% 0.86% 0.46% S ROATCE? 7.58% 7.31% 8.40% 8.84% 4.29% a Net interest margin'.2> 3.47% 3.36% 3.42% 3.75% 3.30% Net loans ($ millions) $1,851 $1,842 $1,788 $1,767 $1,812 © Total deposits ($ millions) $
Slide 10: Sound liquidity management
Sound liquidity management Liquidity coverage ratio (LCR)! Loan / Deposit Ratio FDIC insured / total deposits 2 High quality liquid assets * Secured line available balance Unsecured line of credit Total available funding sources 122% 98% 72% $220 $663 $144 $807 * LOR= High aust qd acets/ Total net 3
Slide 11: Net interest margin expansion
Net interest margin expansion core strength drives NIM growth year-over-year Quarterly net interest margin ! —e=Core Net Interest Margin e+Reported Net Intere 3.90% 3 5 4 = e 3.70% core NIM oar 3.50% 3.40% 3.30% 3.20% 3.10% 1025 2025 3025 4025 1026 Tax-equivalent yield
Slide 12: Balance sheet is neutrally positioned
Balance sheet is neutrally positioned Interest Rate Risk — Stress Test 10.00% 8.76% 8.00% 6.00% 4.00% 2.00% 0.00% oe -1.10% 4.00% 6.00% -8.00% 10.00% =2=% Change in Net Interest Income % Change in Net interest Income 4% 3% 2% 1% 0% 1% 2% 3% Immediate and Permanent Absolute Change to Rate Market 4% W
Slide 13: Optimizing funding costs within a competitive market
641, decrease in deposit cost year-on-year Our market's clients are sophisticated and financially astute which translates to a higher cost of deposits. We continue to focus on building relationships that maximize our returns. Optimizing funding costs within a competitive market Minterest-bearingDDAs
Slide 14: The team continues to focus on core revenue generation and expense control
The team continues to focus on core revenue generation and expense control 2026 expectations + Forward looking expense run rate to stay under $13 million per quarter through remainder of the year. + Loan growth for 2026 expected to be between 3% and 5%. “ 14
Slide 15: Share buyback program results
Share buyback program results positive impact to book value $0.30 Qapereaccnueias | sors ae } scan average repurchase price Ea - shares repurchased Q4 2025 QI 2026 16
Slide 16: Diversified loan portfolio
Diversified loan portfolio with strategic management and growth in owner-occupied CRE Q1 2026 YE 2025 Non-owner Occupied CRE 30% ‘occupied CRE 30% Construction Construction ee —— o% owner cu Occupied cre 20% Mutti-Famity 1% owner- Multi-Family Occupied RE Bs 25% 79 cane year-over-year growth Million
Slide 17: The average new loan size is indicative of well-distributed credit risk
The average new loan size is indicative of well-distributed credit risk management process Good loan metrics mm veraye NewLoan Sie $46,810 544.488 $46.252 gy 709 em Legal Lending Limit x $42,986 $34,104 $28,430 $23,684 $3,323 $2,330 $2,309 $2,045, $1,911 $1,397 $1,388 $1,584 2019 ©2020 «2021-2022 20
Slide 18: Earning asset stress-test shows strong capital position
Earning asset stress-test shows strong capital position Pre- and post-stress capital ratios 14.8% 15.4% 15.2% 15.1% 14.6% 22 years originating commercial 12.4% 12.8% 12.6% 11.8% loans with a BRA total cumulative principal loss of ie $9.6 million 1025 2025 3025 4025 1026 Stress Loss Estimates ($000)
Slide 19: Positive outcomes for nonaccrual and work-out loans expected to continue
Positive outcomes for nonaccrual and work-out loans expected to continue OREO Relationships 8 10 1 Balances $578 million $53.8 million $1.1 million pea ol 3.09% 288% 0.06% Gross Loans Nonaccrual loans millions Probable Outcome Properties in process of orderly Relationship A $20.9 liquidation. Nomina
Slide 20: Government contractors self-fund with an appreciable surplus
Government contractors self-fund with an appreciable surplus 30 asset-based lines of credit Average non-interest bearing deposits $71.7M Morgan Higgins appointed Total committed to the Bank board - Partner at Blue Delta Capital, a minority investor in Gov/Con $1.1M companies Total outstanding - Form
Slide 21: Financial highlights
Financial highlights Year-End Financ 2023 ©2024 Interest noo 124421 Interest Expense. 47570 Q1'25 Quarter End Financial Q3'25 Q4'25 Q1'26 Q2'25 attest income 78742 Noniterest coer 3340 Resized Gains (Losses) on Secures 0 Tol Revenue Taeis 80082 65826 Noninterest Expense 39087 45616 __72.967 Pre-TaeP
Slide 22: Financial highlights continued
Financial highlights continued Year-End Financials Quarter-End Financials Q126 2024 «= 2025 LIM Perornce Mat) ona 183 a || | ROME 1398 a eC FOKTOE to Coon shales 158 | ee Corsa (eenne 18 S| me | | ae BORE Won GAAP i308 2m rae) ma] eo ats are oniiaiesniaidiainaail 15.49 230 7.28] 837] 419 933 B16 7.3
Slide 23: Definitions
Definitions ACL Allowance for Credit Losses AOC! Accumulated Other Comprehensive Income cen Common Equity Tier-1 CETI-RBC Common Equity Tier-1 Risk-Based Capital CRE Commercial Real Estate EAR Earnings-at-Risk: simulation model used to forecast changes to net interest income and reflects a short-ter
MainStreet Bancshares — Q1 2026 Earnings Presentation on 6ix