Mainstreet Bank (MNSB)
Who owns Mainstreet Bank (MNSB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 67.3% of the shares are freely tradable; institutional investors hold 60.4%.
Ownership Structure
Largest Shareholders
Institutions
| 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 |
| Fourthstone LLC | 5.41 | 384,802 | -49.9 | 03/31/2026 |
| Vanguard Group Inc | 5.33 | 379,278 | -0.3 | 12/31/2025 |
| Wellington Management Company LLP | 4.96 | 352,706 | -1.9 | 03/31/2026 |
| BlackRock Inc | 4.88 | 347,608 | -0.8 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.24 | 301,487 | +0.0 | 03/31/2026 |
| First Manhattan Co. LLC | 2.64 | 188,108 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 2.34 | 166,633 | +20.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.23 | 229,832 | +0.0 | 04/30/2026 |
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: July 31, 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.