SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

~~October~~December 16, 2025

Date of Report (Date of earliest event reported)

UNITED SECURITY BANCSHARES

(Exact Name of Registrant as Specified in its Charter)

California

(State or Other Jurisdiction of Incorporation)


000-32987						91-2112732
(Commission File Number)						(I.R.S. Employer Identification No.)

2126 Inyo Street, Fresno, California						93721
(Address of principal executive offices)						(Zip Code)

559-490-6261

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐☒ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, no par value	UBFO	NASDAQ

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

~~ITEM~~Item 28.0201. ~~RESULTS~~Other ~~OF OPERATIONS AND FINANCIAL CONDITION~~Events.

On ~~October~~ December 16, 2025, the Board of Directors of United Security Bancshares (~~the~~ “Company”) ~~issued~~declared a ~~press~~$0.12 ~~release~~per ~~announcing~~share ~~results~~cash dividend for ~~the~~shareholders ~~quarter~~of ~~and~~record ~~the~~as ~~nine~~of ~~months~~December ~~ended September 30~~26, 2025, ~~(the~~payable ~~“Press~~on ~~Release”)~~January 13, 2026. A ~~copy~~press ofrelease ~~the~~was ~~Press~~issued ~~Release~~on December 17, 2025, and is ~~furnished~~attached asto ~~Exhibit~~this ~~99.1~~Current Report and is incorporated ~~herein~~into this report by reference.

The information in ~~Item 2.02 of~~ this ~~Current Report on~~ Form 8-K ~~and~~filed ~~the~~on ~~Press~~December ~~Release~~17, ~~attached~~2025 ~~hereto as Exhibit 99.1~~ shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, asor ~~amended~~otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, asor ~~amended,~~the ~~except~~Securities asExchange ~~shall~~Act beof ~~expressly~~1934, ~~set~~regardless ~~forth~~of byany ~~specific~~general ~~reference~~incorporation language in such filing.

~~ITEM~~Cautionary ~~9.01 FINANCIAL~~Note ~~STATEMENTS~~Regarding ~~AND~~Forward-Looking ~~EXHIBITS.~~ Statements

This Current Report on Form 8-K includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements often include words such as “believes,” “expects,” “anticipates,” “estimates,” “forecasts,” “intends,” “plans,” “targets,” “potentially,” “probably,” “projects,” “outlook” or similar expressions or future or conditional verbs such as “may,” “will,” “should,” “would,” and “could,” as well as the negative of such words. Forward-looking statements are not historical facts but instead represent management’s current expectations and forecasts regarding future events, many of which are inherently uncertain and outside of our control. Actual results may differ, possibly materially, from those currently expected or projected in these forward-looking statements. In addition to factors disclosed in reports filed by CWBC and the Company with the SEC, risks and uncertainties for CWBC, the Company and the combined company that may cause actual results or outcomes to differ materially from those anticipated include, but are not limited to: (d1) ~~Exhibits~~ the possibility that any of the anticipated benefits of the proposed Merger will not be realized or will not be realized within the expected time period; (2) the risk that integration of the Company’s operations with those of CWBC will be materially delayed or will be more costly or difficult than expected; (3) the parties’ inability to meet expectations regarding the timing of the proposed Merger; (4) changes to tax legislation and their potential effects on the accounting for the Merger; (5) the inability to complete the proposed Merger due to the failure of the Company’s shareholders to adopt the Merger Agreement, or the failure of CWBC’s shareholders to adopt the Merger Agreement or to approve the issuance of CWBC’s common stock in connection with the Merger; (6) the failure to satisfy other conditions to completion of the proposed Merger, including receipt of required regulatory and other approvals; (7) the failure of the proposed Merger to close for any other reason; (8) diversion of management’s attention from ongoing business operations and opportunities due to the proposed Merger; (9) the challenges of integrating and retaining key employees; (10) the effect of the announcement of the proposed Merger on CWBC’s, the Company’s or the combined company’s respective customer and employee relationships and operating results; (11) the possibility that the proposed Merger may be more expensive to complete than anticipated, including as a result of unexpected factors or events; (12) the dilution caused by CWBC’s issuance of additional shares of CWBC’s common stock in connection with the Merger; and (13) changes in the global economy and financial market conditions and the business, results of operations and financial condition of CWBC, the Company and the combined company. Please refer to each of CWBC’s and the Company’s Annual Reports on Form 10-K for the year ended December 31, 2024, as well as CWBC’s and the Company’s other filings with the SEC, for a more detailed discussion of risks, uncertainties, and factors that could cause actual results to differ from those discussed in the forward-looking statements.

~~EXHIBIT~~Any #forward-looking statement included in this report is based only on information currently available to management and speaks only as of the date on which it is made. Neither CWBC nor the Company undertakes any obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

~~99.1 Press~~Additional ~~release~~Information ofand ~~United~~Where ~~Security~~to ~~Bancshares~~Find ~~dated October 16, 2025~~It

CWBC will file a registration statement on Form S-4 with the SEC in connection with the proposed transaction. The registration statement will include a joint proxy statement of CWBC and the Company that also constitutes a prospectus of CWBC, which will be sent to the shareholders of CWBC and the Company. Before making any voting decision, the shareholders of CWBC and the Company are advised to read the joint proxy statement/prospectus when it becomes available because it will contain important information about CWBC, the Company, and the proposed transaction. When filed, this document and other documents relating to the Merger filed by CWBC can be obtained free of charge from the SEC’s website at www.sec.gov. These documents can also be obtained free of charge by accessing CWBC’s website at ir.communitywestbank.com under the tab “Financials” and on the Company’s website at investors.unitedsecuritybank.com under the tab “Financials” and “SEC Filings.” Alternatively, these documents, when available, can be obtained free of charge from CWBC upon written request to Community West Bancshares, Attn: Investor Relations, 7100 N. Financial Dr., Suite 101, Fresno, CA 93720, or by calling (916) 235-4617 or from the Company upon written request to United Security Bancshares,

Attn: Investor Relations, 2126 Inyo St., Fresno, CA 93721, or by calling (559) 490-6261. The contents of the websites referenced above are not deemed to be incorporated by reference into the registration statement or the joint proxy statement/prospectus.

Participants in the Solicitation

This report does not constitute a solicitation of a proxy, an offer to purchase or a solicitation of an offer to sell any securities. CWBC, the Company, and certain of their directors, executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies from the shareholders of CWBC and the Company in connection with the proposed Merger under SEC rules. Information about the directors and executive officers of CWBC and the Company will be included in the joint proxy statement/prospectus for the proposed transaction filed with the SEC. These documents (when available) may be obtained free of charge in the manner described above under “Additional Information and Where to Find It.”

Security holders may obtain information regarding the names, affiliations and interests of CWBC’s directors and executive officers in the definitive proxy statement of CWBC relating to its 2025 Annual Meeting of Shareholders filed with the SEC on April 4, 2025, and in CWBC’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on March 17, 2025. Security holders may obtain information regarding the names, affiliations and interests of the Company’s directors and executive officers in the definitive proxy statement of the Company relating to its 2025 Annual Meeting of Shareholders filed with the SEC on April 7, 2025, and in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on March 20, 2025.

Item 9.01 Financial Statements and Exhibits

Exhibits

99.1 Press R elease of United S ecurity Ban cshares Dated December 17, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized.

		United Security Bancshares
Date:	~~October~~December 1617, 2025	By: /s/ David A. Kinross
		David A. Kinross
		Senior Vice President and Chief Financial Officer

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