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Here are 1-2 brief analogies for MainStreet Bancshares (MNSB):

• Think of it as a community-focused Bank of America for the Washington D.C. metropolitan area.
• It's similar to a smaller, more localized PNC Bank, serving businesses and individuals in the D.C. suburbs.

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• Deposit Accounts: Offers various checking, savings, money market, and certificate of deposit accounts for individuals and businesses.
• Commercial Lending: Provides commercial real estate, construction and development, and commercial and industrial loans primarily to small and medium-sized businesses.
• Residential Mortgage Lending: Originates and services loans for the purchase or refinance of residential properties.
• Treasury Management Services: Delivers cash management solutions such as ACH services, wire transfers, and remote deposit capture for business clients.
• Digital Banking: Offers convenient online and mobile banking platforms for account management, bill payments, and transfers.

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MainStreet Bancshares (symbol: MNSB) is a community bank holding company that serves a diverse customer base, primarily within its local operating markets. As a financial institution, it sells a wide array of financial products and services to categories of customers rather than a few named corporate entities. Therefore, the company's major customers can be best described by the following categories:

• Retail Banking Customers: This category includes individuals and families who utilize MainStreet Bancshares for personal financial needs. Services provided to this segment include checking and savings accounts, money market accounts, certificates of deposit, consumer loans (such as auto and personal loans), mortgages, and home equity lines of credit.
• Small to Medium-sized Businesses (SMBs): MainStreet Bancshares provides comprehensive banking solutions to a broad range of local small and medium-sized enterprises. These services include business checking and savings accounts, treasury management solutions, commercial real estate loans, lines of credit, term loans, and U.S. Small Business Administration (SBA) guaranteed loans. These business customers are typically privately held entities operating within the bank's geographic footprint and are not publicly traded companies.
• Commercial Real Estate (CRE) Investors and Developers: The bank serves individuals and entities involved in commercial real estate. This segment includes investors, developers, and property owners seeking financing for the acquisition, construction, development, and refinancing of income-producing commercial properties and owner-occupied commercial properties.

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• Fiserv, Inc. (FISV)

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Jeff W. Dick Chairman, CEO and President of MainStreet Bancshares, Inc. and Chairman and CEO of MainStreet Bank

Jeff W. Dick is a co-founder of MainStreet Bank in 2003. He served as President of the Bank until December 2016. Before co-founding MainStreet Bank, Mr. Dick held various positions at another community bank, including Executive Vice President and a member of the Board of Directors, from 1999 until January 2003. From 1996 to 1999, he was an advisor on risk-based banking supervision for the Bank of England (UK Central Bank) and the Financial Services Authority (FSA). His banking career began in 1983 with the Office of the Comptroller of the Currency as a Field Examiner, becoming a Field Manager in Washington, D.C., in 1993. Mr. Dick has a long history of involvement with payments issues and policy.

Thomas J. Chmelik Director; Secretary, Senior Executive Vice President and Chief Financial Officer of MainStreet Bancshares, Inc.

Thomas J. Chmelik is a co-founder of MainStreet Bank. He oversees the financial and risk management team. From 1998 to 2002, Mr. Chmelik served as the Chief Financial Officer and a director for a local community bank. Previously, from 1995 to 1998, he was the Chief Financial Officer as part of a World Bank initiative during the restructuring of The National Bank of Commerce in Tanzania, Africa. He also served as Chief Financial Officer for Colombo Bank in Bethesda, Maryland, from 1993 to 1995, and for Franklin National Bank of Washington, D.C., from 1989 to 1993.

Abdul Hersiburane President of MainStreet Bank

Abdul Hersiburane began his banking career in Somalia in 1984 and moved to the United States in 1995. From 1996 to 2006, he worked as a Senior Financial Specialist and Financial Advisor with First Union Bank/Wachovia Bank. Mr. Hersiburane joined MainStreet Bank in 2007 as a Business Banker and became the head of Business Banking in 2015.

Alex Vari Executive Vice President and Chief Financial Officer of MainStreet Bank

Alex Vari was promoted to Executive Vice President and Chief Financial Officer of MainStreet Bank in July 2025. He is a Certified Public Accountant and holds a Bachelor of Accountancy from the University of North Dakota. Mr. Vari has been noted for his expertise in accounting and SEC reporting, and he recently led the implementation of the company's Sarbanes-Oxley internal control framework as the organization transitioned from an emerging growth company status.

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The key risks to MainStreet Bancshares (MNSB) primarily revolve around its financial performance and operational stability.

1. Persistent Unprofitability and Shrinking Profit Margins: MainStreet Bancshares has reported continued unprofitability, with losses deepening by an average of 24% per year over the past five years. Analysts anticipate that profit margins will shrink further, from 14.6% currently to 11.0% over the next three years, even as revenue is projected to grow. This indicates a fundamental challenge in achieving consistent earnings and a sustainable business model.
2. Operational and Technological Infrastructure Risks, including Cybersecurity: The company faces risks related to its operational, technological, and organizational infrastructure, particularly concerning the development and implementation of new services like payment processing. These risks can manifest as errors from inadequate processes, faulty computer systems, fraud, or exposure to external events. A recent real-world example of this risk is a cyberattack affecting a third-party vendor in March 2025, which exposed sensitive information of approximately 4.65% to 5% of MainStreet Bank's customers.
3. Dilution Risk from Share Count Increase: Analysts project an annual increase in MainStreet Bancshares' share count by 6.98%. This anticipated dilution could place additional pressure on key financial metrics, such as earnings per share, even if revenue experiences growth.

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The continued rise and increasing sophistication of digital-first banks (neobanks) and financial technology (fintech) companies presents a clear emerging threat to community banks like MainStreet Bancshares. These digital competitors offer superior online and mobile banking experiences, often with lower fees and more streamlined services, directly challenging traditional branch-based banking models for deposits and specific lending products. As customer expectations shift towards seamless digital interactions and younger demographics increasingly opt for digital-native financial solutions, MainStreet Bancshares risks losing market share and relevance if it cannot adequately compete with the convenience and technological capabilities offered by these agile, digitally focused entities.

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MainStreet Bancshares (MNSB) operates as a community bank primarily serving individuals, small to medium-sized businesses, and professional service organizations in the Northern Virginia and Washington D.C. metropolitan area. Their main products and services encompass a range of deposit accounts, commercial and consumer loans, commercial real estate loans, and digital banking solutions.

The addressable markets for MainStreet Bancshares' key products and services are as follows:

• Community Banking Market: The U.S. community banking market was valued at approximately USD 6.35 billion in 2024 and is projected to grow at a compound annual growth rate (CAGR) of 3.8%. In Virginia, community banks held total deposits of approximately $95.97 billion at bank branches as of December 13, 2024. The total assets of community banks headquartered in Virginia amounted to approximately $137.69 billion.

• Commercial Real Estate Lending Market: In the Northern Virginia region, the commercial real estate market saw significant activity in Q3 2024. Fairfax County recorded $740 million in total sales, Loudoun County had $190 million in sales, and Prince William County registered $301 million in sales during that quarter. Over a broader period from Q1 2023 to Q2 2025, the Northern Virginia commercial real estate market remained active, with Loudoun County seeing 281 total sales.

• Small Business Lending Market: In Virginia, reporting banks issued $2.9 billion in loans to businesses with revenues of $1 million or less in 2020. The total new lending to businesses through loans of $1 million or less in Virginia was $10.6 billion in the same year.

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Expected Drivers of Future Revenue Growth for MainStreet Bancshares (MNSB)

MainStreet Bancshares (MNSB) is anticipated to drive future revenue growth over the next 2-3 years through several key strategies and market dynamics:

1. Loan Portfolio Growth: The company has demonstrated recent growth in its loan portfolio, with total gross loans increasing by 1.1% in the third quarter of 2025 to $1.81 billion. MainStreet Bancshares expects 2025 loan growth to be between 1-2%, and the bank continues to identify strong lending opportunities across various sectors, particularly focusing on smaller-sized opportunities within its market.
2. Net Interest Margin (NIM) Expansion: MainStreet Bancshares aims to enhance its net interest margin, which stood at a robust 3.54% in the third quarter of 2025. This is expected to be achieved through active balance sheet management and by taking advantage of a stable or decreasing interest rate environment. The bank successfully replaced high-cost wholesale certificates of deposit (CDs) with lower-rate options and has a laddering of CD maturities throughout 2025, which is projected to positively impact NIM.
3. Growth in Low-Cost Deposits: A focus on increasing non-interest-bearing and other low-cost transactional deposits is a significant driver. The company managed to increase such deposits by $74 million in the first quarter of 2025, which contributes to overall net interest margin expansion and provides a stable funding base for lending activities.
4. Organic Growth within the D.C. Metropolitan Market via a Tech-Forward and Branch-Light Strategy: MainStreet Bancshares emphasizes its "organic growth story" in the vibrant Washington D.C. Metropolitan area. This market is characterized by low unemployment, good median household incomes, and an undersupplied housing market, presenting continuous opportunities. The bank leverages a "branch light strategy" combined with strong online and mobile banking solutions to efficiently serve small to medium-sized businesses, professional practices, and retail customers, including innovative services like "Put Our Bank in Your Office®".

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Share Repurchases

• On October 16, 2025, MainStreet Bancshares authorized a new stock repurchase program to buy back up to $10 million of its outstanding common stock, replacing a previous program from May 2022. This program is anticipated to last for 18 months or until the $10 million limit is reached.
• As of November 4, 2025, MainStreet Bancshares repurchased 209,000 shares of common stock at $18.54 per share under its existing program, with $6.1 million remaining for additional repurchases.
• During the year ended December 31, 2020, the company repurchased 895,785 shares. Additionally, on February 9, 2022, MainStreet Bancshares repurchased 50,000 shares of common stock under a program that allowed for a total of 1.25 million shares to be repurchased.

Share Issuance

• On September 15, 2020, MainStreet Bancshares completed a public offering of 1,000,000 depositary shares, each representing 1/40th of a share of 7.50% Series A Fixed-Rate Non-Cumulative Perpetual Preferred Stock, generating gross proceeds of $25 million.

Outbound Investments

• In August 2021, MainStreet Bancshares created a community development entity (CDE) subsidiary, MainStreet Community Capital, LLC, which serves as an intermediary vehicle for loans and investments in Low-Income Communities after receiving certification in January 2022.

Capital Expenditures

• In the reporting period ending November 7, 2025, MainStreet Bancshares acquired a building complex for potential future bank premises, with two buildings designated as held for sale and expected to close by the end of 2025, indicating strategic asset management and potential future expansion.