MainStreet Bancshares (MNSB) Senior EVP reports tax-withholding stock disposition

Rhea-AI Filing Summary

MainStreet Bancshares Senior EVP CHMELIK THOMAS J reported a Form 4 transaction involving Common Stock of MainStreet Bancshares, Inc. The filing shows a tax-withholding disposition of 2,799 shares at $20.36 per share to satisfy an exercise price or tax liability, rather than an open-market sale. After this transaction, he directly owned 60,962 Common Stock shares and indirectly held 56,794 shares through a 401(k) Plan.

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

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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^*

CHMELIK THOMAS J

(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
X	Officer (give title below)		Other (specify below)
	Senior EVP

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

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	02/20/2026		F		2,799	D	$20.36	60,962	D
Common Stock								56,794	I	By 401(k) Plan

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	02/20/2026
	** 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.

FAQ

What insider transaction did CHMELIK THOMAS J report for MNSB?

He reported a tax-withholding disposition of shares, not an open-market sale. The Form 4 shows 2,799 MainStreet Bancshares Common Stock shares disposed at $20.36 per share to satisfy an exercise price or tax liability, as indicated by transaction code F.

How many MainStreet Bancshares (MNSB) shares did the insider dispose of?

He disposed of 2,799 Common Stock shares in a tax-related transaction. The disposition, coded F, reflects payment of an exercise price or tax liability by delivering securities, rather than a standard buy or sell trade on the open market.

What was the price per share in the MNSB insider tax-withholding transaction?

The reported price per share was $20.36 for the 2,799 disposed shares. This figure comes directly from the Form 4 and is tied to a tax-withholding disposition, where shares are delivered to cover an exercise price or associated tax obligations.

How many MNSB shares does CHMELIK THOMAS J own directly after the transaction?

He directly owns 60,962 MainStreet Bancshares Common Stock shares after the reported transaction. This post-transaction balance reflects ownership following the 2,799-share tax-withholding disposition reported under transaction code F on the Form 4 filing.

What indirect MNSB holdings does the insider report after this Form 4?

He reports indirect ownership of 56,794 Common Stock shares through a 401(k) Plan. The filing classifies this as indirect ownership with nature of ownership stated as “By 401(k) Plan,” separate from his directly held 60,962 shares of MainStreet Bancshares stock.

Does the MNSB Form 4 indicate an open-market sale by the insider?

No, the Form 4 indicates a tax-withholding disposition, not an open-market sale. Transaction code F and the description show shares were delivered to pay an exercise price or tax liability, distinguishing it from a voluntary sale on the market.