[Form 4] MainStreet Bancshares, Inc. Insider Trading Activity

Rhea-AI Filing Summary

MainStreet Bancshares, Inc. (MNSB) reported insider open-market purchases of its common stock by a director on 11/24/2025. The director bought multiple small lots of shares at prices between $18.95 and $19.05 per share in routine transactions coded as purchases.

Following these trades, the director beneficially owns shares both directly and indirectly. Indirect holdings include shares held through the Brockett Family Trust and additional shares attributed to the director’s spouse, while a larger block is held directly in the director’s own name.

Insider Trade Summary

Net Buyer: 742 shares ($14,113)

Net Buy 4 txns

Insider Brockett Charles C.

Role Director

Bought 742 shs ($14K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	400	$19.03	$8K
Purchase	Common Stock	200	$19.05	$4K
Purchase	Common Stock	123	$18.95	$2K
Purchase	Common Stock	19	$18.95	$360.05

Holdings After Transaction: Common Stock — 26,655 shares (Indirect, Brockett Family Trust); Common Stock — 93,051 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 11/24/2025 - 01:17 PM Learn about SEC filing dates

FAQ

What did MainStreet Bancshares (MNSB) disclose in this Form 4?

The filing reports that a director of MainStreet Bancshares, Inc. purchased additional shares of the company’s common stock in open-market transactions on 11/24/2025.

What type of transactions did the MNSB insider report?

All reported transactions are coded as “P” (purchase), indicating open-market or private purchases of MainStreet Bancshares common stock rather than sales or option exercises.

At what prices were the MainStreet Bancshares (MNSB) shares purchased?

The director bought shares of MainStreet Bancshares common stock at prices of $19.03, $19.05, and $18.95 per share, as shown in the transaction table.

How many shares did the Brockett Family Trust hold after the reported MNSB transactions?

After the purchases reported on 11/24/2025, the Brockett Family Trust is shown as beneficially owning 26,855 shares of MainStreet Bancshares common stock indirectly for the director.

Does the MNSB Form 4 show direct ownership by the reporting person?

Yes. One line shows the director directly beneficially owning 93,051 shares of MainStreet Bancshares common stock after a purchase on 11/24/2025.

Is there any indirect ownership of MNSB shares through the director’s spouse?

Yes. The table lists 891 shares of MainStreet Bancshares common stock as indirectly owned, with the nature of ownership noted as “By wife.”

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brockett Charles C.

(Last) (First) (Middle)

10089 FAIRFAX BLVD

(Street)

FAIRFAX VA 22030

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MainStreet Bancshares, Inc. [ MNSB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/24/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/24/2025		P		400	A	$19.03	26,655	I	Brockett Family Trust
Common Stock	11/24/2025		P		200	A	$19.05	26,855	I	Brockett Family Trust
Common Stock	11/24/2025		P		123	A	$18.95	93,051	D
Common Stock	11/24/2025		P		19	A	$18.95	891	I	By wife

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Richard A. Vari, attorney-in-fact	11/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.