Mainstreet Bancshares, Inc. · NASDAQ:MNSB
Mainstreet Bancshares — Q3 2025 Earnings Presentation
26 slides from Mainstreet Bancshares's earnings presentation, Oct 27, 2025
Slide 1: 2025 Third Quarter Earnings
October 27, 2025 2025Third | Quarter Earnings = 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: Diverse DC metro market
Diverse DC metro market Major universities Federal hub * Georgetown * Defense contracting «cw * CACI * American * Lockheed Martin * Howard FT yA * George Mason © SAIC cr) © Gallaudet * Catholic * UMUC * Marymount (oy 5 Resident fortune 500 Other notable * Under Armour © Historic trend of low unemplo
Slide 4: DC market by the numbers
DC market by the numbers Median household Average home listing . i 1 ‘ice2 The DC metropolitan cad ume area remains vibrant with opportunity Median days on the Federal employees in the market? DMV? ‘ederal /e Economic Data - Year End DC, MD ~Average ‘ederal rtnership for Put Intelligence employ:
Slide 5: Rooted in community
Rooted in community branch-lite structure Headquarters: Fairfax, VA $2.1B Number of branches: 6 Total Assets Full-time employees: 174 Assets per employee: $12.2mm 6 Holding company established: 2016 Branches
Slide 6: Middleburg Virginia branch coming soon
Middleburg Virginia branch coming soon Team has produced deposits of nearly $100 million in the Middleburg market ahead of the branch opening
Slide 7: Share repurchase plan and stock information
pana aq a Share repurchase plan refreshed to $10 million of available capacity MainStreet Bancshares, Inc. Nasdaq capital market: MNSB Close common stock price $20.83 Price / tangible book value 84% Common shares outstanding 7,703,579 Market capitalization $160 million Tangible book value $24.81 Nas
Slide 8: 2025 third quarter financial summary
2025 third quarter financial summary 3Q25 2Q25 1Q25 4Q24 3Q24 = EPS $0.52 $0.53 $0.25 ($2.20) ($0.04) 3 ROAA? 0.85% 0.86% 0.46% (2.80%) 0.05% = ROATCE2 8.40% 8.84% 4.29% (36.51%) (0.60%) a Net interest margin'!2:3 3.42% 3.75% 3.30% 2.96% 3.05% Net loans ($ millions) $1,788 $1,767 $1,812 $1,811 $1,77
Slide 9: Sound liquidity management
Sound liquidity management Liquidity coverage ratio (LCR)! 147% 108% 225% 164% Core deposit ratio 1% 74% 70% 76% Loan / Deposit Ratio 100% 99% 96% 96% FDIC insured / total deposits 3 75% 74% 74% 71% High quality liquid assets 4 $196 $202 $274 $278 Secured line available balance $527 $551 $555 $545 U
Slide 10: Core net interest margin continues to rise
3.54 Core net interest margin yields 5 basis point increase from previous quarter and 24 basis points from the first quarter Core net interest margin continues to rise Quarterly net interest margin ' Core Net Interest Margin = -Reported Net Interest Margin 3024 4024 1025 2025 3Q25 “ 10
Slide 11: Steady deposit structure
45 Our Business Banking team is active in the community and forging new relationships with customers in our market. Steady deposit structure
Slide 12: Balance sheet well positioned for current and anticipated rate environment
Balance sheet well positioned for up or down 400 basis points Percentage change in net interest income Balance sheet well positioned for current and anticipated rate environment Earnings-at-risk (EAR) One-year dynamic model'results as of 9-30-2025 9.51% 9.00% 7.00% —=% Change to Net Interest Income
Slide 13: Diversified core deposits
Diversified core deposits Balance Percent Weighted | Weighted Type (millions) of total avg. rate maturity Non-interest bearing DDA $325 25% 0.00% n/a Low-cost transactional ' $118 9% 0.98% n/a Interest bearing $418 32% 3.59% n/a Term $429 34% 4.04% 7 months Total core deposits $1,290 100% 2.60% Mone
Slide 14: 2025 expectations
2025 expectations The team continues to focus on core + Expense run rate for the remainder of 2025 is $4.26 million per month + Loan growth projected to be 1-2% revenue generation and expense control A] 14
Slide 15: Diversified loan portfolio
Diversified loan portfolio with strategic growth in owner-occupied Non-Owner Occupied CRE 31% $1.8B Owner- Occupied CRE 23% 86% of construction loans have a suitable interest reserve deposit held at the bank A 15
Slide 16: Commercial real estate is effectively managed
Commercial real estate is effectively managed Investor commercial real estate as a % of total capital @lInvestor CRE mConstruction “ 16
Slide 17: Government contracting relationships generate healthy deposit balances
Government contracting relationships generate healthy deposit balances 27 asset-based lines of credit $9.5M Total outstanding $71.2M Total committed 4term loans $1.9M Total outstanding $79.1 e e million Total average DDA deposits attributable to government contract loan relationships “ 17
Slide 18: Federal government shutdown: supporting our community
Day 27 - Federal government shutdown Supporting our community Talking with CO RRNENT customers to learn their needs. SHU WN Working with customers to meet their needs. 18
Slide 19: 9A loans
9A loans Loans to non-depository financial institutions All 9A loans are 9A Portfolio Composition (s000’s) originated in-house and conservatively underwritten - secured by real estate - good sponsor liquidity mNote Sales m Private Lenders 19 «
Slide 20: Loan pricing positioned for stable or falling rates
Loan pricing positioned for stable or falling rates 57% with a weighted average floor rate of 5.89% September 30, 2025 total loans $1.8B * Loans include all fixed-rate and floating loans with a rate repricing date more than 6-months from quarter-end 2 Loans are loans that can reprice immediately or
Slide 21: 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 Mil Average New Loan Size S46810 4488 ga5.067 ===1egal Lending Limit $42,986 $34,104 $28,430 $23,684 $21,354 $2,330 $2,309 $2,085 $1,911 $1,403 $1,397 $1,363 2018 2019 2020 2021 2022 2023 202
Slide 22: Earning asset stress-test shows good results
Earning asset stress-test shows good results Pre- and post-stress capital ratios 15.8% 16.1% 15.9% 16.0% 14.6% 14.8% Gee joc 14.9% 14.9% 13.6% 13.7% 125% 12.4% 128% 12.6% 4023 1024 2024 3024 4024 1025 2025 3025 Stress Loss Estimates ($000) $31,840 38,667 $42,476 $42,476 $45,104 $44,183 $46,790 $48,8
Slide 23: Favorable outcomes anticipated
Favorable outcomes anticipated For both classified and nonperforming loans (assets) Classified loans Relationships 6 Outstanding Balances $31.4 million Classified / Gross Loans (%) 106} Nonperforming assets Relationships t Outstanding Balances $23.4 million NPAs / Total Assets (%) 1.10 A 23
Slide 24: Financial highlights
Financial highlights Quarter-End Finar Chenree need y04 Q3'24 Q4'24 Q125 Q225 Q3'25 Interest Income 64,199 83,845 124,421 134,615} 134,832) 33,591 35,119 32,963 34,286 32,464, hier Expense iss 13836 vero roi 688] tava tgora 16453 15.406] a NetIterest Income sasas 70010 7674262574) @ada) 1531316011 1
Slide 25: Financial highlights continued
Financial highlights continued -End Finan End Financ In $000 unless otherwise noted 2023 Q125 Q225 Q325 Porimancetene= (8) OHA tz 153138 arf gay] cos, 2a cas we ORE we atm aus] a] ar antares er2| gas FOATCE to Connon Surchoters 13 tsa tata 7af ag ceo estate) Care FOAA on GAAP) tz 153138 oof am] cats
Slide 26: Definitions
Definitions ACL AOCI CETI CETI-RBC CRE EAR EPS GAAP LCR Allowance for Credit Losses Accumulated Other Comprehensive Income Common Equity Tier-1 Common Equity Tier-1 Risk-Based Capital Commercial Real Estate Earnings-at-Risk: simulation model used to forecast changes to net interest income and reflec
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