United Security (UBFO) SVP stock converted in Community West merger

Rhea-AI Filing Summary

United Security Bancshares senior vice president and chief credit officer William M. Yarbenet disposed of 75,475.0400 shares of common stock in a transaction coded as a disposition to the issuer. The shares were converted under a merger in which United Security merged into Community West Bancshares.

At 12:01 a.m. on April 1, 2026, each share of United Security common stock, other than excluded and dissenting shares, became entitled to receive 0.4520 of a Community West common share as merger consideration. All outstanding unvested United Security restricted stock awards vested in full and also became entitled to this same merger consideration, and Yarbenet’s reported direct holdings in United Security common stock fell to zero after the transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Yarbenet William M.

Role SVP & CCO

Type	Security	Shares	Price	Value
Disposition	Common Stock	75,475.04	$0.00	--

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Shares disposed: 75,475.0400 shares Exchange ratio: 0.4520 share per share Post-transaction holdings: 0 shares +1 more

4 metrics

Shares disposed 75,475.0400 shares Common stock disposed in merger-related transaction on April 1, 2026

Exchange ratio 0.4520 share per share Each United Security share became entitled to 0.4520 Community West share

Post-transaction holdings 0 shares Total United Security common shares directly owned by Yarbenet after transaction

Merger effective time 12:01 a.m. on April 1, 2026 Effective time of United Security’s merger into Community West

Key Terms

Agreement and Plan of Merger, Merger Consideration, restricted stock award

3 terms

Agreement and Plan of Merger regulatory

"Disposed of pursuant to the Agreement and Plan of Merger, dated as of December 16, 2025"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

Merger Consideration financial

"each share of Company common stock ... was converted into the right to receive 0.4520 of a share ... (the "Merger Consideration")"

Merger consideration is the total payment a company or buyer offers to shareholders of a target company in exchange for combining the two businesses, and can include cash, shares in the surviving company, debt assumption, or a mix of these. Investors care because the form and amount affect the deal’s value, tax consequences, immediate cash received versus future ownership, and the risk and upside of holding new shares — similar to choosing between cash now or stock that could grow later.

restricted stock award financial

"each outstanding unvested Company restricted stock award automatically vested in full and became entitled to the Merger Consideration"

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

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

X

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 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 & CCO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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)
04/03/2026

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	04/01/2026		D		75,475.04	D	$0	0	D(1)

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. Disposed of pursuant to the Agreement and Plan of Merger, dated as of December 16, 2025 (the "Merger Agreement"), by and between Community West Bancshares ("Community West") and United Security Bancshares (the "Company"), providing for the Company to merge (the "Merger") with and into Community West with Community West being the surviving entity. The Merger became effective at 12:01 a.m. on April 1, 2026, at which time (i) each share of Company common stock, other than excluded shares and dissenting shares, was converted into the right to receive 0.4520 of a share of common stock of Community West (the "Merger Consideration"); (ii) each outstanding unvested Company restricted stock award automatically vested in full and became entitled to the Merger Consideration.

Remarks:

This amendment to the Reporting Person's Form 4 filed on April 3, 2026, is being filed to (i) clarify that the Reporting Person is no longer subject to Section 16 reporting with respect to the Company, (ii) correct the disposition price of shares of Company common stock, and (iii) make clarifying changes to footnote (1).

	/s/ William M Yarbenet	04/13/2026
	** 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 transaction did UBFO executive William M. Yarbenet report?

William M. Yarbenet reported disposing of 75,475.0400 shares of United Security Bancshares common stock. The disposition was to the issuer and occurred in connection with a merger into Community West Bancshares, rather than an open-market sale or purchase, and reduced his reported United Security holdings to zero.

How were United Security Bancshares (UBFO) shares exchanged in the Community West merger?

Each share of United Security Bancshares common stock, other than excluded and dissenting shares, was converted into the right to receive 0.4520 of a share of Community West Bancshares common stock. This fixed stock-for-stock exchange ratio defined the merger consideration for shareholders at closing.

When did the United Security Bancshares and Community West merger become effective?

The merger of United Security Bancshares with and into Community West Bancshares became effective at 12:01 a.m. on April 1, 2026. At that time, United Security ceased as a separate entity and the share conversion into Community West stock took effect for eligible shareholders and awards.

What happened to unvested restricted stock awards of United Security Bancshares in the merger?

Each outstanding unvested restricted stock award of United Security Bancshares automatically vested in full at the merger’s effectiveness. Once vested, each such share became entitled to receive the same merger consideration, namely 0.4520 of a Community West Bancshares common share, as other eligible common shares.

Did UBFO executive William M. Yarbenet retain any United Security shares after the merger transaction?

No. Following the disposition transaction related to the merger, William M. Yarbenet’s reported direct ownership of United Security Bancshares common stock was zero shares. His prior holdings were converted into the merger consideration in Community West Bancshares stock instead of remaining United Security shares.