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 ($1.4m this quarter). Holder counts are more reliable. Shares outstanding: 7.1m as of 2026-07-31, 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 ≈ $24.43.
Trends to Q2 2026
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 |
| Q3 2025 | 71 |
| Q4 2025 | 75 |
| Q1 2026 | 84 |
| Q2 2026 | 97 |
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 2024 | 20 | 29 |
| Q4 2024 | 18 | 19 |
| Q1 2025 | 15 | 26 |
| Q2 2025 | 36 | 21 |
| Q3 2025 | 37 | 23 |
| Q4 2025 | 35 | 32 |
| Q1 2026 | 36 | 28 |
| Q2 2026 | 59 | 24 |
Biggest buyers
| BlackRock, Inc. | Added | +56.4k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +49.3k |
| AMERICAN CENTURY COMPANIES INC | Added | +49.1k |
| DIMENSIONAL FUND ADVISORS LP | Added | +38.4k |
| CITADEL ADVISORS LLC | Added | +34.8k |
| AQR CAPITAL MANAGEMENT LLC | New | +29.4k |
| STRS OHIO | Added | +25.6k |
| HRT FINANCIAL LP | New | +24.3k |
| GSA CAPITAL PARTNERS LLP | New | +23.2k |
| Trexquant Investment LP | Added | +22.5k |
Biggest sellers
| Fourthstone LLC | Reduced | -337.4k |
| ALLIANCEBERNSTEIN L.P. | Reduced | -136.3k |
| UBS Group AG | Reduced | -80.1k |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -39.0k |
| FIRST MANHATTAN CO. LLC. | Reduced | -26.4k |
| MENDON CAPITAL ADVISORS CORP | Reduced | -23.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -15.7k |
| Squarepoint Ops LLC | Reduced | -13.6k |
| Cresset Asset Management, LLC | Reduced | -13.0k |
| ELCO Management Co., LLC | Reduced | -12.1k |
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 since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| Q4 2024 | 4 | $21.7k | 1 | $52.8k | — |
| Q1 2025 | 1 | $1.9k | 0 | — | — |
| Q2 2025 | 1 | $2.3k | 0 | — | — |
| Q3 2025 | 1 | $3.9k | 0 | — | — |
| Q4 2025 | 3 | $16.5k | 1 | $809.0k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $104.4k | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-06-04 | Vari Richard Alexander Chief Financial Officer | Sold | $104.4k4.5k 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 2026
| Manager | Shares | Change |
|---|---|---|
| BANC FUNDS CO LLC 2.23% of their portfolio | 545.7k $13.5m | Added +14.7k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 418.4k $9.3m | Reduced -136.3k |
| BlackRock, Inc. 0.00% of their portfolio | 404.0k $10.0m | Added +56.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 337.0k $8.3m | Reduced -15.7k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 262.5k $6.5m | Reduced -39.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 205.0k $5.1m | Added +38.4k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 183.2k $4.5m | Added +49.3k |
| FIRST MANHATTAN CO. LLC. 0.01% of their portfolio | 161.7k $4.0m | Reduced -26.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 152.2k $3.8m | Added +5.0k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 120.2k $3.0m | Added +14.0k |
| STATE STREET CORP 0.00% of their portfolio | 109.5k $2.7m | Added +9.3k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 101.6k $2.5m | Added +49.1k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 66.6k $1.6m | Added +2.8k |
| Cresset Asset Management, LLC 0.01% of their portfolio | 59.0k $1.5m | Reduced -13.0k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 58.3k $1.4m | Added +34.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 48.1k $1.2m | Added +1.2k |
| Fourthstone LLC 0.84% of their portfolio | 47.4k $1.2m | Reduced -337.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 42.8k $1.1m | Added +3.2k |
| Trexquant Investment LP 0.01% of their portfolio | 39.5k $975.9k | Added +22.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 39.0k $963.4k | Added +67 |
| Squarepoint Ops LLC 0.00% of their portfolio | 37.2k $919.3k | Reduced -13.6k |
| Empowered Funds, LLC 0.00% of their portfolio | 37.2k $917.8k | Added +2.8k |
| UBS Group AG 0.00% of their portfolio | 33.1k $817.3k | Reduced -80.1k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 30.4k $750.2k | Reduced -2.7k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 29.4k $726.1k | New |
| STRS OHIO 0.00% of their portfolio | 26.1k $644.4k | Added +25.6k |
| MORGAN STANLEY 0.00% of their portfolio | 24.3k $600.4k | Reduced -64 |
| HRT FINANCIAL LP 0.00% of their portfolio | 24.3k $599.0k | New |
| MENDON CAPITAL ADVISORS CORP 0.20% of their portfolio | 23.4k $577.0k | Reduced -23.9k |
| GSA CAPITAL PARTNERS LLP 0.04% of their portfolio | 23.2k $574.0k | New |
| Creative Planning 0.00% of their portfolio | 22.8k $562.8k | Added +523 |
| R Squared Ltd 0.27% of their portfolio | 20.8k $513.5k | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 19.4k $480.1k | Added +1.6k |
| Daytona Street Capital LLC 0.32% of their portfolio | 18.0k $433.0k | Unchanged |
| Nuveen, LLC 0.00% of their portfolio | 17.9k $441.1k | Added +8.7k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 17.4k $430.0k | Added +590 |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 16.7k $412.3k | New |
| BARCLAYS PLC 0.00% of their portfolio | 15.9k $391.6k | Reduced -651 |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 14.4k $355.6k | New |
| XTX Topco Ltd 0.00% of their portfolio | 13.9k $342.4k | Added +3.8k |
| HighTower Advisors, LLC 0.00% of their portfolio | 13.5k $333.2k | Added +67 |
| Atlantic Union Bankshares Corp 0.01% of their portfolio | 12.6k $311.1k | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 11.0k $271.6k | Reduced -3.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 10.6k $262.4k | Reduced -2.2k |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 10.5k $258.9k | New |
| ELCO Management Co., LLC 0.11% of their portfolio | 10.2k $252.4k | Reduced -12.1k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 9.9k $244.8k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 9.8k $242.8k | Added +9.1k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 9.7k $240.3k | Unchanged |
| Quadrature Capital Ltd 0.00% of their portfolio | 9.7k $239.7k | New |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.01% of their portfolio | 9.0k $221.5k | New |
| CALDWELL SUTTER CAPITAL, INC. 0.08% of their portfolio | 8.8k $217.7k | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 7.4k $183.5k | Added +4.6k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 6.7k $165.6k | Unchanged |
| Spire Wealth Management 0.00% of their portfolio | 6.3k $154.5k | Reduced -305 |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 5.5k $136.2k | Added +402 |
| Hughes Financial Services, LLC 0.02% of their portfolio | 5.4k $134.3k | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 5.3k $130.9k | Added +2.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 5.2k $128.4k | Added +175 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 3.5k $86.0k | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 2.9k $72.1k | Added +2.6k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 2.9k $72.0k | Reduced -441 |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 2.9k $71.8k | Added +37 |
| Cassaday & Co Wealth Management LLC 0.00% of their portfolio | 2.7k $67.4k | Unchanged |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 2.6k $63.3k | Unchanged |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 1.8k $43.5k | Unchanged |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 1.2k $29.4k | New |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 1.1k $25.9k | Unchanged |
| FMR LLC 0.00% of their portfolio | 953 $23.5k | Added +481 |
| FIRST UNITED BANK & TRUST 0.01% of their portfolio | 790 $19.5k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 779 $19.0k | Added +229 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 718 $17.7k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 636 $15.7k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 619 $15.3k | Reduced -475 |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 596 $14.0k | Unchanged |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 558 $13.8k | Added +2 |
| TOTH FINANCIAL ADVISORY CORP 0.00% of their portfolio | 545 $13.4k | Added +3 |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 482 $11.9k | Added +27 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 170 $4.2k | Added +144 |
| Arax Advisory Partners 0.00% of their portfolio | 138 $3.4k | Added +135 |
| GAMMA Investing LLC 0.00% of their portfolio | 124 $3.1k | Added +95 |
| Sterling Capital Management LLC 0.00% of their portfolio | 121 $3.0k | Reduced -102 |
| Allworth Financial LP 0.00% of their portfolio | 121 $3.0k | Added +106 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 88 $2.2k | Unchanged |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 87 $2.1k | Reduced -294 |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 83 $2.0k | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 83 $2.0k | Unchanged |
| IFP Advisors, Inc 0.00% of their portfolio | 57 $1.4k | Added +55 |
| ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio | 24 $593 | Added +19 |
| Basecamp Wealth Advisors LLC 0.00% of their portfolio | 18 $444 | Added +4 |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 17 $419 | New |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 15 $370 | Reduced -79 |
| Covestor Ltd 0.00% of their portfolio | 14 $0 | New |
| True Wealth Design, LLC 0.00% of their portfolio | 7 $173 | New |
| Essential Partners LLC 0.00% of their portfolio | 7 $173 | Added +3 |
| Wealth Enhancement Trust Services, Inc. 0.00% of their portfolio | 3 $74 | New |
| SJS Investment Consulting Inc. 0.00% of their portfolio | 1 $25 | New |