MAINSTREET BANCSHARES INC MNSB
COM · Common Stock · CUSIP 56064Y100
- SectorFinancials
- IndustryState Commercial Banks
- HeadquartersFairfax, VA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($680.1k this quarter). Holder counts are more reliable. Shares outstanding: 7.7m as of 2025-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $18.90.
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 46 |
| Q4 2022 | 53 |
| Q1 2023 | 54 |
| Q2 2023 | 60 |
| Q3 2023 | 64 |
| Q4 2023 | 65 |
| Q1 2024 | 66 |
| Q2 2024 | 67 |
| Q3 2024 | 54 |
| Q4 2024 | 54 |
| Q1 2025 | 52 |
| Q2 2025 | 62 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 26 | 15 |
| Q4 2023 | 30 | 18 |
| Q1 2024 | 33 | 22 |
| Q2 2024 | 34 | 35 |
| Q3 2024 | 20 | 29 |
| Q4 2024 | 18 | 19 |
| Q1 2025 | 15 | 26 |
| Q2 2025 | 36 | 21 |
Biggest buyers
| Fourthstone LLC | Added | +304.9k |
| BlackRock, Inc. | Added | +237.7k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +86.3k |
| STATE STREET CORP | Added | +44.9k |
| VANGUARD GROUP INC | Added | +43.4k |
| NORTHERN TRUST CORP | Added | +38.0k |
| Bank of New York Mellon Corp | New | +24.0k |
| StoneX Group Inc. | New | +23.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | New | +20.6k |
| DIMENSIONAL FUND ADVISORS LP | Added | +18.9k |
Biggest sellers
| Cutler Capital Management, LLC | Sold out | -86.3k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -64.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -39.7k |
| FIRST MANHATTAN CO. LLC. | Reduced | -34.2k |
| SALZHAUER MICHAEL | Sold out | -33.4k |
| JANE STREET GROUP, LLC | Sold out | -21.3k |
| MENDON CAPITAL ADVISORS CORP | Reduced | -17.9k |
| CITADEL ADVISORS LLC | Sold out | -16.1k |
| Qube Research & Technologies Ltd | Sold out | -11.7k |
| OSAIC HOLDINGS, INC. | Reduced | -6.1k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| ALLIANCEBERNSTEIN L.P. 13G · institution -1.6 pts · filed 2026-08-14 | 5.9% |
| BlackRock, Inc. 13G · institution new · filed 2026-07-29 | 5.6% |
| BANC FUNDS CO LLC 13G · passive investor filed 2026-02-13 | 5.6% |
| MainStreet Bank 401(k) Retirement Plan 13G · institution new · filed 2026-02-24 | 5.1% |
Fell to 5% or below in the last year: Fourthstone LLC (0.7%, 2026-08-14), WELLINGTON MANAGEMENT GROUP LLP (4.7%, 2026-02-10)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 2 | $86.2k | 0 | — | — |
| Q4 2023 | 1 | $12.2k | 0 | — | — |
| Q1 2024 | 2 | $24.0k | 0 | — | — |
| Q2 2024 | 4 | $61.2k | 0 | — | — |
| Q3 2024 | 1 | $39.1k | 0 | — | — |
| Q4 2024 | 4 | $21.7k | 1 | $52.8k | — |
| Q1 2025 | 1 | $1.9k | 0 | — | — |
| Q2 2025 | 1 | $2.3k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-05-29 | Brockett Charles C. Director | Bought | $2.3k120 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 656.6k $12.4m | Added +5.9k |
| BANC FUNDS CO LLC 1.86% of their portfolio | 651.0k $12.3m | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 416.5k $7.9m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 380.5k $7.2m | Added +43.4k |
| Fourthstone LLC 1.25% of their portfolio | 338.1k $6.4m | Added +304.9k |
| Cresset Asset Management, LLC 0.03% of their portfolio | 334.5k $6.3m | Reduced -1.7k |
| BlackRock, Inc. 0.00% of their portfolio | 298.7k $5.6m | Added +237.7k |
| FIRST MANHATTAN CO. LLC. 0.01% of their portfolio | 210.4k $4.0m | Reduced -34.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 153.5k $2.9m | Added +86.3k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 117.2k $2.2m | Added +18.9k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 77.2k $1.5m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 67.2k $1.3m | Added +44.9k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 57.2k $1.1m | Reduced -110 |
| NORTHERN TRUST CORP 0.00% of their portfolio | 50.7k $958.8k | Added +38.0k |
| Empowered Funds, LLC 0.01% of their portfolio | 34.2k $646.7k | Reduced -110 |
| MENDON CAPITAL ADVISORS CORP 0.30% of their portfolio | 32.4k $612.9k | Reduced -17.9k |
| MORGAN STANLEY 0.00% of their portfolio | 28.2k $532.4k | Added +7.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 28.0k $529.2k | Added +500 |
| BARCLAYS PLC 0.00% of their portfolio | 25.2k $475.4k | Added +11.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 24.0k $453.2k | New |
| StoneX Group Inc. 0.02% of their portfolio | 23.9k $452.5k | New |
| Creative Planning 0.00% of their portfolio | 21.0k $396.9k | Unchanged |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 20.6k $388.7k | New |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 18.3k $345.9k | Reduced -1.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 15.1k $284.9k | Reduced -39.7k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 14.7k $280.0k | Added +7.9k |
| ELCO Management Co., LLC 0.15% of their portfolio | 14.7k $277.1k | Reduced -5.7k |
| GSA CAPITAL PARTNERS LLP 0.02% of their portfolio | 14.3k $270.0k | Reduced -272 |
| Forum Financial Management, LP 0.00% of their portfolio | 13.4k $254.0k | Unchanged |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 12.7k $240.6k | Reduced -2.7k |
| Atlantic Union Bankshares Corp 0.01% of their portfolio | 12.6k $238.1k | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 12.5k $236.5k | Reduced -64.6k |
| HighTower Advisors, LLC 0.00% of their portfolio | 12.1k $228.0k | Added +1.4k |
| Provident Wealth Management, LLC 0.07% of their portfolio | 10.9k $206.6k | Unchanged |
| CALDWELL SUTTER CAPITAL, INC. 0.08% of their portfolio | 8.8k $166.7k | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 6.8k $128.4k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 6.7k $126.8k | Reduced -6.1k |
| Spire Wealth Management 0.00% of their portfolio | 6.6k $124.0k | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 5.8k $110.4k | Added +2.4k |
| Hughes Financial Services, LLC 0.02% of their portfolio | 5.4k $107.2k | Unchanged |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 5.4k $102.1k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 4.5k $84.4k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 4.4k $83.6k | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 3.8k $72.7k | New |
| UBS Group AG 0.00% of their portfolio | 3.8k $71.7k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 3.3k $62.9k | Added +3.3k |
| CITIGROUP INC 0.00% of their portfolio | 2.4k $44.8k | Reduced -1.6k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 1.8k $33.3k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.1k $21.0k | Added +542 |
| US BANCORP \DE\ 0.00% of their portfolio | 1.0k $18.9k | Unchanged |
| FIRST UNITED BANK & TRUST 0.01% of their portfolio | 790 $14.9k | Unchanged |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 718 $13.6k | New |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 704 $13.3k | New |
| Legal & General Group Plc 0.00% of their portfolio | 636 $12.0k | New |
| TOTH FINANCIAL ADVISORY CORP 0.00% of their portfolio | 534 $10.1k | Added +2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 439 $8.3k | New |
| AMALGAMATED BANK 0.00% of their portfolio | 240 $5.0k | New |
| Sterling Capital Management LLC 0.00% of their portfolio | 181 $3.4k | New |
| FMR LLC 0.00% of their portfolio | 115 $2.2k | Reduced -6 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 82 $1.6k | Added +30 |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 67 $1.3k | New |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |