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Buy Day today: Good (62) Broad market participation · no major macro event
MNSB

Mainstreet Bank

Financial Services · Banks - Regional

25.00$ -0.1% vs. previous close Closing price · As of: Sep 17, 2026

Ownership

Ownership Structure

Who owns Mainstreet Bank (MNSB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 72.5% of the shares are freely tradable; institutional investors hold 60.4%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 60.4%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 16.3%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 72.5%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 3.6%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 7Mio.

Largest Shareholders

Institutions

Institutions MNSB
Name Stake (%) Shares Change (%) Date
AllianceBernstein L.P. 7.79 554,723 -19.0 03/31/2026
Banc Funds Co LLC 7.46 530,941 +25.8 03/31/2026
BlackRock Inc 4.88 347,608 -0.8 03/31/2026
Wellington Management Company LLP 4.73 336,961 -4.5 06/30/2026
Vanguard Capital Management, LLC 4.23 301,487 +0.0 03/31/2026
Dimensional Fund Advisors, Inc. 2.88 205,014 +23.0 06/30/2026
First Manhattan Co. LLC 2.64 188,108 +0.0 03/31/2026
Geode Capital Management, LLC 2.07 147,168 -1.9 03/31/2026

Funds

Funds MNSB
Name Stake (%) Shares Change (%) Date
Vanguard MStar Total Stk Mkt Idx Invest 2.70 192,048 +0.0 07/31/2026
iShares Russell 2000 ETF 2.38 169,808 -0.6 08/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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