Mainstreet Bancshares, Inc. · NASDAQ:MNSB
Mainstreet Bancshares — Q3 2026 Earnings Presentation
25 slides from Mainstreet Bancshares's earnings presentation, Oct 26, 2026
Slide 1: 2026 Q3 Financial Highlights
October 26, 2026 2026 Q3 Financial Highlights
Slide 2: Forward-looking statements and additional information
Forward-looking statements and additional information Statements in this presentation which are not As such, actual results could differ materially from historical are “forward-looking statements” within the those expressed or implied by forward-looking meaning of Section 27A of the Securities Act o
Slide 3: Excellent market driven by diverse business
Excellent market driven by diverse business Major universities ● Georgetown ● GW ● American ● Howard ● George Mason ● Gallaudet ● Catholic ● UMUC ● Marymount Federal hub ● Defense contracting ● CACI ● Lockheed Martin ● FTI ● SAIC Other notable ● Historic trend of low unemployment Resident fortune 50
Slide 4: The DC Metropolitan area
The DC Metropolitan area CBRE's REVIVE index, $135,089 $830,984 Median household Average which tracks economic income1 listing price2 vibrancy in Greater Washington, just posted its highest six-month rolling average since 2019. 30 684K Median days on the Government employees in - Washington Business
Slide 5: Strategic balance sheet management
Strategic balance sheet management March 2022 $44M April 2021 Sub-Debt Offering Sept. 2020 $30M Sub-Debt $28.75M Offering Depository $2,228 $2,213 $2,235 April 2019 Share Offering Became SEC $2,035 Registrant and $1,926 Began Trading August 2018 on NASDAQ Capital Market January 2017 $45M Private $1,
Slide 6: Rooted in community
Rooted in community branch-lite structure Branch Locations Arlington, VA Fairfax, VA ● Headquarters: Fairfax, VA ● Full-time employees: 164 Herndon, VA ● Assets per employee: $13,627M Leesburg, VA ● Holding company established: 2016 Middleburg, VA McLean, VA Washington, D.C. 6
Slide 7: MainStreet Bancshares, Inc.
MainStreet Bancshares, Inc. MNSB Close common stock price $24.74 Price / tangible book value 94% Common shares 7,115,994 Market capitalization $176 million Tangible book value $26.36 MNSBP Close preferred stock price $24.11 MainStreet Banchshares, Inc. is a component of the Russell 2000 Index 7
Slide 8: Loan portfolio actions
Loan portfolio actions Highlighted for discussion • $1.9 million provision expense with an after-tax EPS impact of ($0.21) per share. o includes a $1.4 million charge-off tied to the sale of real property securing a $4.5 million loan. • $28.8 million loan downgraded to classified / nonperforming. •
Slide 9: 2026 third quarter financial overview
2026 third quarter financial overview 3Q26 2Q26 1Q26 4Q25 3Q25 Profitability EPS $0.43 $0.58 $0.48 $0.46 $0.52 ROAA2 0.64% 0.85% 0.76% 0.75% 0.85% ROATCE2 6.42% 8.88% 7.58% 7.31% 8.40% Net interest margin1,2,3 3.55% 3.53% 3.47% 3.36% 3.42% Net loans ($ millions) $1,931 $1,928 $1,851 $1,842 $1,788 To
Slide 10: Sound liquidity management
Sound liquidity management Metric 3Q26 2Q26 1Q26 4Q25 Liquidity coverage ratio (LCR)1 110% 105% 122% 106% Loan / Deposit Ratio 102% 100% 98% 98% FDIC insured / total deposits 2 74% 72% 72% 72% High quality liquid assets 3 $164 $163 $220 $217 Secured line available balance $672 $666 $663 $587 Unsecur
Slide 11: Balance sheet is favorably positioned: Earnings at Risk
Balance sheet is favorably positioned Earnings at Risk 25.00% 12-month outlook % Change in Net interest Income 19.45% 20.00% 15.00% 11.55% 10.00% 4.96% 5.00% 0.54% 5.79% 0.00% 4.08% 0.00% 2.27% 0.72% -5.00% -4% -3% -2% -1% 0% 1% 2% 3% 4% % Change in Net Interest Income Immediate and sustained change
Slide 12: Net interest margin expansion
Net interest margin1 expansion Net Interest Margin 3.60% 3.55% 3.55% 3.50% NIM 3.45% 3.40% 3.35% 3.30% 3Q25 4Q25 1Q26 2Q26 3Q26 1 Tax-equivalent yield 12
Slide 13: Deposit pricing pressure is impacting the margin
Deposit pricing pressure is impacting the margin 8.00% Quarterly net interest margin1 calculation 6.84% 7.00% 6.46% 6.57% 6.47% 6.23% 6.20% 6.27% 6.19% 6.00% 5.00% 3.55% NIM 4.00% 3.50% 3.27% 3.08% 3.06% 2.87% 3.00% 2.71% 2.67% 2.72% 2.00% 24Q4 25Q1 25Q2 25Q3 25Q4 26Q1 26Q2 26Q3 NII / Avg. Earning A
Slide 14: Loan repricing opportunities
Loan repricing opportunities Loan repricing horizon $60,000 tied to 5-yr Treasury note 8.00% $76 million 6.98% repricing at a 200 6.66% $50,000 7.00% to 300 basis point 5.91% 6.00% spread over the $40,000 5yr during next 4.64% 4.62% 4.46% 5.00% three quarters $30,000 4.00% $31,118 $28,395 $20,000 $2
Slide 15: Deposit costs remain challenging
Deposit costs remain challenging within our competitive market 44bp Interest-bearing DDAs Non-interest bearing DDAs Time decrease in deposit 43% 41% 39% 40% 41% cost year-on-year 19% 19% 18% 18% 20% We continue to focus on building 39% 39% 42% 41% 41% relationships 3Q25 4Q25 1Q26 2Q26 3Q26 Cost of T
Slide 16: Core deposits represent 82% of all deposits
Core deposits represent 82% of all deposits Weighted Weighted Balance Rate Maturity Wholesale CDs $349,207 4.01% 12 mos Non-Interest-Bearing $343,769 Deposits Low-Cost Deposits* $142,200 0.84% Other IBs $648,890 3.45% CDs $439,934 3.73% 7 mos Total Core Deposits $1,574,793 2.34% Total Deposits $1,92
Slide 17: 4th Quarter 2026 expectations
4th Quarter 2026 expectations The team is focused on • Forward looking expense run revenue rate to stay under $13 million generation per quarter through remainder of the year. and • Loan growth for 2026 estimated expense at 5%. control 17
Slide 18: Diversified loan portfolio with growth in owner-occupied CRE
Diversified loan portfolio with strategic management and growth in owner-occupied CRE Q3 2026 YE 2025 Residential Residential Real Estate Real Estate 12% 12% Non-Owner Non-Owner Occupied CRE, Occupied CRE 30% 30% Construction, $1.9B $2.0B Construction 16% 16% C&I Owner- C&I 5% Occupied CRE 6% Multi-
Slide 19: CRE loans are in-market
CRE loans are in-market 91% of construction loans are within 25 miles of our branch network. 19
Slide 20: Stress tests reveal strong capital position
Stress tests reveal strong capital position Pre- and post-stress capital ratios 15.2% 15.1% 14.6% 14.1% 14.2% 12.6% 11.8% 11.0% 10.6% 9.9% 7.0% 3Q25 4Q25 1Q26 2Q26 3Q26 Stress Loss Estimates ($000) $48,820 $62,933 $69,548 $71,335 $86,047 Pre stress CET1 / RBC Post stress CET1 / RBC Regulatory thresh
Slide 21: Classified loans nearing peak
Classified loans nearing peak resolution strategies underway Classified Classified non- Other Real Estate performing loans performing loans Owned Relationships 7 12 3 Balances (million) $46.4 $92.0 $1.8 As a % of gross loans 2.37% 4.71% 0.09% $ million Non-performing loan probable outcome Newly adde
Slide 22: Key drivers of portfolio stress in Washington, DC
Key drivers of portfolio stress in Washington, DC 1. Multifamily Properties - owner liquidity depleted due to legacy tenant protections • Legacy pandemic tenant protections lingered well beyond industry norms • Rapid re-housing program expiration • Severe judicial backlog at D.C. landlord & tenant c
Slide 23: Financial highlights
Financial highlights Year-End Financials Quarter-End Financials Q3’26 In $000 unless otherwise noted 2022 2023 2024 2025 Q3’25 Q4’25 Q1’26 Q2’26 Q3’26 LTM Interest Income 83,845 124,421 134,615 131,588 128,386 32,464 31,874 31,218 32,090 33,205 Interest Expense 13,836 47,679 72,041 62,043 56,743 15,
Slide 24: Financial highlights continued
Financial highlights continued Year-End Financials Quarter-End Financials Q3’26 2022 2023 2024 2025 Q3’25 Q4’25 Q1’26 Q2’26 Q3’26 In $000 unless otherwise noted LTM Performance Metrics (%) ROAA 1.53 1.38 -0.47 0.73 0.75 0.85 0.75 0.76 0.85 0.64 ROAE 13.98 12.66 -4.44 7.33 7.58 8.33 7.37 7.63 8.75 6.
Slide 25: Definitions
Definitions ACL Allowance for Credit Losses $MM Millions of Dollars AOCI Accumulated Other Comprehensive NCOs Net Charge-Offs Income CET1 Common Equity Tier-1 OREO Other Real Estate Owned CET1-RBC Common Equity Tier-1 Risk-Based ROAA Return on Average Assets Capital CRE Commercial Real Estate ROAE R
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