MainStreet Bancshares, Inc. (MNSB)
Nasdaq: MNSB · State Commercial Banks · Fairfax, VA · filing with the SEC since 2017
Grade3.4
◀ Past 3.4● Present 3.3▶ Future 3.6
Who owns MainStreet Bancshares, Inc.
As filed with the SECHolders of 5% or more
4
AllianceBernstein L.P. holds 5.9% of Common Stock, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
13
report now, of 16 people on the record since 2019. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
AllianceBernstein L.P.
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock · 7.5% in May 18, 2026
Blackrock, Inc.
SCHEDULE 13G · filed Jul 29, 2026 · Common Stock
Banc Fund X L.P.
SCHEDULE 13G/A · filed Feb 13, 2026 · COMMON STOCK
MainStreet Bank 401(k) Retirement Plan
SCHEDULE 13G · filed Feb 24, 2026 · Common Stock, par value $4.00 per share
Wellington Management Group LLP
SCHEDULE 13G/A · filed Feb 10, 2026 · Common Stock · reported falling below 5%
Fourthstone LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, par value $4.00 per share · reported falling below 5%, from 5.22% in May 15, 2026
What MNSB reports owning in othersstakes of 5% or more, and other ties
3 subsidiaries in 1 country, from the list filed with the 10-K filed Mar 13, 2026.
Insider tradesForm 4
7sales
5purchases
0sales on a scheduled plan
2people selling
$900,000sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 2, 2025 to Oct 2, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 2, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window4 of 18 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Chmelik Thomas J | Senior EVP | 6 | $800,000 | 0 | 0 | $0 |
| Vari Richard Alexander | Chief Financial Officer | 1 | $100,000 | 0 | 0 | $0 |
| Brockett Charles C. | President | 0 | $0 | 0 | 4 | $0 |
| Dick Jeff W | Chairman, President and CEO | 0 | $0 | 0 | 1 | $0 |