STOCK TITAN

Director Hammack disposes UBFO stake as United Security merges into Community West

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

UNITED SECURITY BANCSHARES director Heather Hammack reported disposing of her equity position in connection with the company’s merger into Community West Bancshares. At the effective time on April 1, 2026, each share of United Security common stock was converted into the right to receive 0.4520 of a Community West common share as merger consideration.

Hammack’s 16,398 shares of common stock were returned to the issuer at $10.51 per share, and her 15,000 stock options with an exercise price of $8.17 and expiration in 2032 were cancelled for any value above $10.29, the 20‑day VWAP ending March 27, 2026. Following these transactions, she reports zero directly held shares and options of UNITED SECURITY BANCSHARES.

Positive

  • None.

Negative

  • None.
Insider Hammack Heather
Role Director
Type Security Shares Price Value
Disposition Stock Options 15,000 $0.00 --
Disposition Common Stock 16,398 $10.51 $172K
Holdings After Transaction: Stock Options — 0 shares (Direct); Common Stock — 0 shares (Direct)
Footnotes (1)
  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. Pursuant to the Merger Agreement, at the effective time of the merger, each of the reporting person's stock options were converted into the right to receive the amount, if any, by which the option's price exceeded $10.29 (20 day VWAP ending 3/27/2026).
Common shares disposed 16,398 shares Disposition to issuer at $10.51 per share on April 1, 2026
Stock options disposed 15,000 options Options on common stock at $8.17 exercise price, expiring January 25, 2032
Merger exchange ratio 0.4520 shares Community West common stock per United Security common share
VWAP reference price $10.29 per share 20‑day VWAP ending March 27, 2026 for option cash-out
Common stock disposition price $10.51 per share Price per share for 16,398 common shares returned to issuer
Merger effective time 12:01 a.m. April 1, 2026 Effective Time of merger into Community West Bancshares
Post-transaction holdings 0 shares, 0 options Total directly held UNITED SECURITY BANCSHARES equity after transactions
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.
20 day VWAP financial
"the option's price exceeded $10.29 (20 day VWAP ending 3/27/2026)"
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.
Disposition to issuer financial
"transaction_code_description": "Disposition to issuer""
SEC Form 4
FORM 4UNITED 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*
Hammack Heather

(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock04/01/2026D16,398D$10.51(1)0D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$8.1704/01/2026D15,00001/25/202301/25/2032Common Stock15,000(1)(2)0D
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.
2. Pursuant to the Merger Agreement, at the effective time of the merger, each of the reporting person's stock options were converted into the right to receive the amount, if any, by which the option's price exceeded $10.29 (20 day VWAP ending 3/27/2026).
Remarks:
/s/ Heather Hammack04/01/2026
** Signature of Reporting PersonDate
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 Heather Hammack report for UNITED SECURITY BANCSHARES (UBFO)?

Heather Hammack reported disposing of her entire equity stake in UNITED SECURITY BANCSHARES. She returned 16,398 common shares to the issuer and had 15,000 stock options cancelled, all in connection with the merger into Community West Bancshares at the stated merger terms.

How were UNITED SECURITY BANCSHARES (UBFO) common shares treated in the Community West merger?

Each UNITED SECURITY BANCSHARES common share was converted into the right to receive 0.4520 of a Community West Bancshares common share. This exchange ratio formed the merger consideration for most outstanding common shares and vested restricted stock at the April 1, 2026 effective time.

What happened to Heather Hammack’s stock options in UNITED SECURITY BANCSHARES (UBFO)?

Hammack’s UNITED SECURITY BANCSHARES stock options, covering 15,000 underlying shares at an $8.17 exercise price, were converted into a right to receive any value above $10.29 per share, the 20‑day VWAP ending March 27, 2026, and then disposed of to the issuer at the merger’s effective time.

What is the significance of the $10.29 VWAP mentioned for UNITED SECURITY BANCSHARES (UBFO) options?

The $10.29 figure is the 20‑day volume‑weighted average price ending March 27, 2026. Under the merger agreement, each stock option was converted into a right to receive only the amount, if any, by which this VWAP exceeded the option’s exercise price at the effective time.

Does Heather Hammack hold any UNITED SECURITY BANCSHARES (UBFO) shares after the merger?

After the merger-related transactions, Hammack reports zero directly held UNITED SECURITY BANCSHARES common shares and stock options. Her Form 4 shows total shares following each transaction as 0.0000, reflecting the disposition of both common stock and options back to the issuer.

When did the UNITED SECURITY BANCSHARES (UBFO) merger with Community West become effective?

The merger of UNITED SECURITY BANCSHARES into Community West Bancshares became effective at 12:01 a.m. on April 1, 2026. At that effective time, common shares and unvested restricted stock were converted into merger consideration based on the 0.4520 share exchange ratio described in the merger agreement.