United Security (NASDAQ: UBFO) SVP reports share dispositions in Community West merger

Rhea-AI Filing Summary

United Security Bancshares executive Kevin J. Williams reported share dispositions tied to the company’s merger with Community West Bancshares. On April 1, 2026, he disposed of 49,575 shares of common stock back to the issuer in connection with the merger closing and share conversion.

Footnotes explain that at the merger’s effective time, each United Security share (other than excluded and dissenting shares) was converted into the right to receive 0.4520 of a Community West common share, and all unvested restricted stock awards fully vested and became entitled to this consideration. On March 24, 2026, Williams also had a total of 34,262 shares withheld as tax payments related to equity awards, reported as two separate tax-withholding dispositions.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider WILLIAMS KEVIN J

Role SVP/Chief Banking Officer

Type	Security	Shares	Price	Value
Disposition	Common Stock	49,575	$0.00	--
Tax Withholding	Common Stock	27,618	$0.00	--
Tax Withholding	Common Stock	6,644	$0.00	--

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

Footnotes (1)

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Key Figures

Issuer disposition shares: 49,575 shares Tax-withholding shares (larger block): 27,618 shares Tax-withholding shares (smaller block): 6,644 shares +3 more

6 metrics

Issuer disposition shares 49,575 shares Common Stock returned to issuer on April 1, 2026

Tax-withholding shares (larger block) 27,618 shares Tax-withholding disposition on March 24, 2026

Tax-withholding shares (smaller block) 6,644 shares Additional tax-withholding disposition on March 24, 2026

Total tax-withholding shares 34,262 shares Aggregate F-code tax-withholding dispositions

Merger exchange ratio 0.4520 Community West common shares per United Security share

Merger effective time 12:01 a.m. April 1, 2026 Effective Time when shares converted and awards vested

Key Terms

Agreement and Plan of Merger, Merger Consideration, Disposition to issuer, tax-withholding disposition, +2 more

6 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

"was converted into the right to receive 0.4520 of a share of common stock of Community West (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.

Disposition to issuer financial

"transaction_code_description": "Disposition to issuer""

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

restricted stock award financial

"each outstanding unvested Company restricted stock award automatically vested in full"

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.

Effective Time regulatory

"The Merger became effective at 12:01 a.m. on April 1, 2026 (the "Effective Time")"

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^*

WILLIAMS KEVIN J

(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 Banking 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)
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	03/24/2026		F		27,618	D	$0	0	D
Common Stock	03/24/2026		F		6,644	D	$0	0	D
Common Stock	04/01/2026		D		49,575	D	$0	0(1)	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. 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 (the "Effective Time"), 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"); 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/ Kevin J. Williams	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 transactions did Kevin J. Williams report for UBFO?

Kevin J. Williams reported three dispositions of United Security Bancshares common stock. He returned 49,575 shares to the issuer in the merger and had a total of 34,262 shares withheld to cover tax obligations related to equity awards, all recorded as non-market transactions.

How did the Community West Bancshares merger affect UBFO shares?

At the merger’s effective time, each United Security Bancshares share, other than excluded and dissenting shares, was converted into the right to receive 0.4520 of a Community West Bancshares common share. Unvested restricted stock awards also fully vested and became entitled to this same merger consideration.

What does the Form 4/A disposition of 49,575 UBFO shares represent?

The 49,575-share disposition reflects United Security Bancshares common stock returned to the issuer under the merger agreement with Community West Bancshares. It is labeled as a "Disposition to issuer" and occurs in connection with the share conversion at the merger’s effective time, not an open-market sale.

Why were 34,262 UBFO shares reported as tax-withholding dispositions?

Two Form 4/A entries show 27,618 and 6,644 United Security Bancshares shares delivered to cover tax liabilities. These are coded as "Payment of exercise price or tax liability by delivering securities," meaning shares were withheld for taxes on equity awards rather than sold in the open market.

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

The merger between United Security Bancshares and Community West Bancshares became effective at 12:01 a.m. on April 1, 2026. At that effective time, United Security shares were converted into rights to receive Community West common stock based on the 0.4520 exchange ratio described as the Merger Consideration.

What happened to unvested restricted stock awards in the UBFO merger?

At the merger’s effective time, each outstanding unvested United Security Bancshares restricted stock award automatically vested in full. Once vested, these awards became entitled to receive the same Merger Consideration, meaning 0.4520 of a Community West Bancshares common share for each underlying United Security share.