MainStreet Bancshares, Inc.
MNSB- Exchange
- Nasdaq
- Industry
- State Commercial Banks
- SEC CIK
- 0001693577
No open-market purchases or sales by MainStreet Bancshares, Inc. insiders were filed in the last 90 days; 96 institutions reported holding it in 13F filings for Q2 2026, worth $99.3M in total; no superinvestor holds it.
Other share classesMNSBP
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +13 vs. previous quarter
- 96
- 13F valueReported value at the end of Q2 2026
- $99.3M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding MNSB, Q2 2026
No superinvestor reported holding MNSB at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by MainStreet Bancshares, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 4, 2026 (view filing) | Jun 4 | Same day | Vari Richard AlexanderChief Financial Officer | SSale | −4.50K | $23.20 | −$104.4K | −11.7%34.0K after | |
| Dec 10, 2025 (view filing) | Dec 9 | 1 day | Chmelik Thomas JCFO, MainStreet Bancshares Inc | SSale | −7.24K | $20.09 | −$145.4K | −10.2%63.8K after | 2 lots |
| Dec 8, 2025 (view filing) | Dec 8 | Same day | Chmelik Thomas JCFO, MainStreet Bancshares Inc | SSale | −23.6K | $19.93 | −$469.9K | −24.9%71.0K after | 2 lots |
| Dec 4, 2025 (view filing) | Dec 3 | 1 day | Chmelik Thomas JCFO, MainStreet Bancshares Inc | SSale | −8.72K | $19.86 | −$173.2K | −8.4%94.6K after | |
| Dec 4, 2025 (view filing) | Dec 3 | 1 day | Chmelik Thomas JCFO, MainStreet Bancshares Inc | SSale | −1.05K | $19.50 | −$20.5K | −100.0%0 after | |
| Nov 24, 2025 (view filing) | Nov 24 | Same day | Brockett Charles C.Director | PPurchase | +619 | $19.03 | +$11.8K | +227.6%891 after | 3 lots |
| Nov 24, 2025 (view filing) | Nov 24 | Same day | Brockett Charles C.Director | PPurchase | +123 | $18.95 | +$2.33K | +0.1%93.1K after | |
| Nov 24, 2025 (view filing) | Nov 24 | Same day | Dick Jeff WChairman, President and CEO | PPurchase | +106 | $18.99 | +$2.01K | +0.1%194.8K after | |
| Sep 8, 2025 (view filing) | Sep 8 | Same day | Dick Jeff WChairman, President and CEO | PPurchase | +176 | $22.15 | +$3.90K | +0.1%194.7K after | |
| May 29, 2025 (view filing) | May 29 | Same day | Brockett Charles C.Director | PPurchase | +120 | $19.12 | +$2.29K | +0.1%92.9K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in MainStreet Bancshares, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Banc Funds Co LLC | 545,679 | $13.5M | 2.23% | +14,738+2.8% | Added |
| BlackRock, Inc. | 404,037 | $9.98M | 0.00% | +56,429+16.2% | Added |
| Alliancebernstein L.P. | 418,393 | $9.29M | 0.00% | −136,330−24.6% | Reduced |
| Wellington Management Group LLP | 336,961 | $8.32M | 0.00% | −15,745−4.5% | Reduced |
| Vanguard Capital Management LLC | 262,466 | $6.48M | 0.00% | −39,021−12.9% | Reduced |
| Dimensional Fund Advisors LP | 205,014 | $5.06M | 0.00% | +38,381+23.0% | Added |
| Acadian Asset Management LLC | 183,245 | $4.52M | 0.01% | +49,269+36.8% | Added |
| First Manhattan Co | 161,731 | $3.99M | 0.01% | −26,377−14.0% | Reduced |
| Geode Capital Management, LLC | 152,196 | $3.76M | 0.00% | +5,028+3.4% | Added |
| Marshall Wace, LLP | 120,194 | $2.97M | 0.00% | +13,969+13.2% | Added |