UBFO (UBFO) SVP & CCO Yarbenet reports acquisition of 2,785 shares

Rhea-AI Filing Summary

United Security Bancshares insider activity: Senior Vice President and Chief Credit Officer William M. Yarbenet reported acquiring 2,785 shares of United Security Bancshares common stock on 01/27/2026 at a reported price of $0 per share. Following this transaction, he beneficially owns 75,475.04 shares, held directly.

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^*

Yarbenet William M.

(Last) (First) (Middle)

2126 INYO STREET

(Street)

FRESNO CA 93721

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
UNITED SECURITY BANCSHARES [ UBFO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
01/27/2026

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	01/27/2026		A		2,785	A	$0	75,475.04	D

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:

Remarks:

	/s/ William M Yarbenet	01/27/2026
	** 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 UBFO report for William M. Yarbenet?

United Security Bancshares reported that SVP & CCO William M. Yarbenet acquired 2,785 shares of common stock on 01/27/2026. The Form 4 shows the transaction code as an acquisition, increasing his directly held beneficial ownership stake in the company.

How many UBFO shares does William M. Yarbenet own after this Form 4?

After the reported transaction, William M. Yarbenet beneficially owns 75,475.04 shares of United Security Bancshares common stock. These shares are reported as being held directly, reflecting his total position following the 2,785-share acquisition on 01/27/2026.

What was the reported price per share in the UBFO Form 4 transaction?

The Form 4 lists the acquisition of 2,785 United Security Bancshares common shares at a reported price of $0 per share. This typically indicates a non-cash transaction type, such as an award or grant, as disclosed within Section 16 reporting rules.

What is William M. Yarbenet’s role at United Security Bancshares (UBFO)?

William M. Yarbenet is identified as an officer of United Security Bancshares with the title of Senior Vice President and Chief Credit Officer. His position is disclosed in the Form 4, which also confirms he is not a director or 10% beneficial owner.

Is the UBFO Form 4 filing for William M. Yarbenet an individual filing?

Yes. The Form 4 is filed by one reporting person, William M. Yarbenet, as indicated in the section covering individual or joint filings. No joint or group reporting persons are listed in connection with this particular United Security Bancshares insider transaction.

What type of security is reported in William M. Yarbenet’s UBFO Form 4?

The Form 4 for William M. Yarbenet reports a transaction in United Security Bancshares common stock as a non-derivative security. No derivative securities, such as options or warrants, are listed in Table II of this specific insider trading report.