MNSB · CIK 1693577
What MainStreet Bancshares, Inc. told the SEC could break it.
MainStreet Bancshares' disclosures center on geographic and funding concentration typical of a community bank. Substantially all of its loans, commitments, and standby letters of credit are to customers in the greater Washington, D.C. metropolitan area, concentrating its credit risk in a single regional economy. Its funding leans on wholesale deposits, which made up roughly 35% of its interest expense in 2025 — rate-sensitive and potentially flighty sources — and as a Virginia state member bank it is extensively supervised and examined by the Federal Reserve, the Virginia Bureau of Financial Institutions, and the FDIC, with CFPB consumer-finance authority on top.
3 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Geographic concentration
- loan book concentrated in greater Washington, D.C. metrohigh
Substantially all of the Bank's loans, commitments and standby letters of credit are to customers in the greater Washington, D.C. metropolitan area, concentrating credit risk in one regional economy.
“Substantially all the Bank's loans, commitments and standby letters of credit have been granted to customers located in the greater Washington, D.C. Metropolitan area.”
SEC filing →As of 2026
Liquidity & debt
- wholesale deposit funding (~35% of interest expense)medium
Wholesale deposit funding accounted for roughly 35% of the Company's interest expense in 2025, a meaningful reliance on rate-sensitive, potentially flighty funding sources.
“During the year ended December 31, 2025 , total wholesale deposit funding accounted for approximately 35% of our interest expense.”
SEC filing →As of 2026
Regulatory & policy
- bank regulatory supervision (Fed, Virginia BFI, FDIC, CFPB)low
As a Virginia state member bank, MainStreet is extensively regulated and examined by the Federal Reserve, the Virginia Bureau of Financial Institutions and the FDIC, with CFPB consumer-finance authority — changes in these laws can materially affect operations.
“We are subject to extensive regulation, supervision and examination by the Federal Reserve, our primary federal regulator, the Virginia Bureau of Financial Institutions, our chartering authority and the FDIC, as insurer of our deposits.”
SEC filing →As of 2026
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