United Security Bancshares (NASDAQ: UBFO) risk chief nets more shares after exercise

Rhea-AI Filing Summary

UNITED SECURITY BANCSHARES SVP & Chief Risk Officer Robert C. Oberg Jr. exercised derivative rights to acquire 7,391 shares of common stock on 2026-03-24. To cover obligations related to this exercise, 3,036 shares were disposed of through tax withholding, a non-market transaction.

These transactions resulted in a net increase of 4,355 shares, bringing Oberg’s directly owned common stock holdings to 29,469.392 shares after the reported activity. The filing characterizes the acquisition as an exercise or conversion of a derivative security and the disposition as payment of tax liability using shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider OBERG ROBERT C JR

Role SVP & CHIEF RISK OFFICER

Type	Security	Shares	Price	Value
Exercise	Common Stock	7,391	$0.00	--
Tax Withholding	Common Stock	3,036	$0.00	--

Holdings After Transaction: Common Stock — 32,505.392 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

OBERG ROBERT C JR

(Last) (First) (Middle)

2126 INYO STREET

(Street)

FRESNO CALIFORNIA 93721

(City) (State) (Zip)

UNITED STATES

(Country)

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 & CHIEF RISK OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/24/2026

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

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

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

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	03/24/2026		M		7,391	A	$0	32,505.392	D
Common Stock	03/24/2026		F		3,036(1)	D	$0	29,469.392	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:

1. For disclosure purposes only.

Remarks:

	/s/ Robert C Oberg	03/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did UBFO executive Robert C. Oberg Jr. report?

Robert C. Oberg Jr. reported exercising derivative rights to acquire 7,391 shares of UNITED SECURITY BANCSHARES common stock and disposing of 3,036 shares via tax withholding. These combined actions produced a net increase in his directly held shares.

Did the UBFO Form 4 show open-market buying or selling by Robert C. Oberg Jr.?

The Form 4 for UNITED SECURITY BANCSHARES shows an option-like exercise and tax-withholding disposition, not open-market buying or selling. Code M reflects a derivative exercise, while code F indicates shares withheld to satisfy related obligations.

How many UBFO shares does Robert C. Oberg Jr. own after these transactions?

After the reported transactions, Robert C. Oberg Jr. directly owns 29,469.392 shares of UNITED SECURITY BANCSHARES common stock. This figure reflects the net result of the derivative exercise and the tax-withholding share disposition.

What do the M and F transaction codes mean in the UBFO Form 4 filing?

In the UNITED SECURITY BANCSHARES Form 4, code M represents the exercise or conversion of a derivative security to acquire common stock, while code F represents a disposition of shares used to pay the exercise price or related tax liability.

Was the tax-related share disposition in the UBFO Form 4 a market sale?

The 3,036-share disposition reported for UNITED SECURITY BANCSHARES under code F was for tax or exercise-related payment. This type of transaction is a withholding mechanism and is not treated as an open-market sale of shares.

What net share change resulted from Robert C. Oberg Jr.’s UBFO Form 4 activity?

The Form 4 activity for UNITED SECURITY BANCSHARES produced a net increase in Oberg’s holdings. He acquired 7,391 shares via derivative exercise and had 3,036 shares withheld for obligations, resulting in more shares held directly afterward.