[Form 4] FIRST US BANCSHARES, INC. Insider Trading Activity

Rhea-AI Filing Summary

First US Bancshares (FUSB): An executive (SEVP-Consumer Lending-Bank) reported an option exercise and related share withholding on 10/31/2025 on Form 4. The filing shows the exercise of 6,800 shares of common stock via option (Code M) at $8.30 per share and a disposition of 5,049 shares for tax withholding (Code F) at $13.06 per share.

After these transactions, the executive directly holds 21,827 shares. Additional holdings include 8,317 shares in a 401(k) plan as of 10/31/2025, and 1,209 shares owned by the spouse, for which the reporting person disclaims beneficial ownership. The option covered 6,800 underlying shares (exercisable since 02/24/2017, expiring 02/24/2026), with 0 derivative securities remaining after the exercise.

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^*

Mitchell William C

(Last) (First) (Middle)

3291 US HIGHWAY 280

(Street)

BIRMINGHAM AL 35243

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FIRST US BANCSHARES, INC. [ FUSB ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SEVP-Consumer Lending-Bank

3. Date of Earliest Transaction (Month/Day/Year)
10/31/2025

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, $.01 par value	10/31/2025		M		6,800	A	$8.3	26,876	D
Common Stock, $.01 par value	10/31/2025		F		5,049	D	$13.06	21,827	D
Common Stock, $.01 par value								8,317	I	401K(1)
Common Stock, $.01 par value								1,209	I	By Spouse(2)

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
Common Stock, $.01 par value	$8.3	10/31/2025		M			6,800	02/24/2017	02/24/2026	Common Stock, $.01 per value	6,800	$0	0	D

Explanation of Responses:

1. Based on information provided by One America, the record keeper of the First US Bancshares, Inc. 401(k) Plan as of 10/31/25.

2. Shares owned by spouse of which reporting person disclaims beneficial ownership.

	/s/Beverly J. Dozier, by power of attorney	11/03/2025
	** 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.

FAQ

What did FUSB's officer report on Form 4?

An option exercise of 6,800 shares at $8.30 and a tax withholding disposition of 5,049 shares at $13.06 on 10/31/2025.

How many FUSB shares does the reporting person now hold directly?

The reporting person holds 21,827 shares directly after the reported transactions.

Were any derivative securities remaining after the transaction?

No. The filing lists 0 derivative securities beneficially owned after the exercise.

What additional indirect holdings were disclosed for FUSB?

The filing shows 8,317 shares in a 401(k) plan as of 10/31/2025, and 1,209 shares owned by the spouse (beneficial ownership disclaimed).

What transaction codes were used in the Form 4 for FUSB?

The filing uses Code M (option exercise) and Code F (tax withholding).

What were the option’s key dates and terms?

The option was exercisable since 02/24/2017, expires on 02/24/2026, and was exercised for 6,800 underlying shares at $8.30.