United Security Bancshares (NASDAQ: UBFO) to merge with Community West Bancshares

Rhea-AI Filing Summary

Community West Bancshares announced that it has entered into a merger agreement to acquire United Security Bancshares and their respective banking subsidiaries. The combined company aims to create one of the strongest community banks in Central California, leveraging both banks’ long histories of relationship-based, locally focused banking.

The merger is expected to close during the second quarter of 2026. Community West’s existing executive team will continue to lead the combined organization, the Board of Directors will remain under Chairman Dan Doyle, and the headquarters will stay in Fresno. Until the transaction is finalized, Community West Bank and United Security Bank will continue operating independently while employees are asked to stay focused on serving clients and communities.

Positive

• Strategic community bank merger: Community West Bancshares plans to acquire United Security Bancshares, aiming to form one of the strongest community banks in Central California.
• Leadership and headquarters stability: The existing executive team will continue to lead, the Board will remain under Chairman Dan Doyle, and the headquarters will stay in Fresno, supporting continuity through the transition.

Negative

• None.

Insights

Banking M&A analyst

All‑stock community bank merger aims to build a larger Central California franchise.

The agreement for Community West Bancshares to acquire United Security Bancshares combines two relationship-focused community banks into a larger regional platform. Management highlights shared values around local decision-making and personalized service, with a goal of forming one of the strongest community banks in Central California.

Leadership continuity reduces execution uncertainty: the existing Community West executive team will lead the combined company, the Board will remain under Chairman Dan Doyle, and the headquarters will stay in Fresno. Both banks will continue to operate independently until closing, which is expected in the second quarter of 2026, so operational and systems integration will follow later.

For investors, the key implications will depend on future disclosures about transaction terms, cost synergies, and integration plans, which are not detailed here. The emphasis on expanded products, technology and reach into additional rural communities suggests a growth-oriented combination, but the realized financial impact will be clearer in subsequent communications as the closing date approaches.

Filed by Community West Bancshares pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934

Subject Company: United Security Bancshares

Commission File Number: 000-32897

December 17, 2025

Dear Valued Team Members,

We are pleased to announce that Community West Bancshares and Community West Bank have entered into a merger agreement to acquire United Security Bancshares and United Security Bank. This strategic partnership will combine two strong community banks and create an even greater ability to serve our clients and communities. This merger is more than a business decision – it’s a commitment to growth, innovation and the communities we serve. Both banks share a proud history of local leadership, personalized service and deep community roots. By joining forces, we will amplify these strengths, position ourselves for long-term success and create one of the strongest community banks in Central California.

Since 1980, Community West Bank has focused on building strong relationships and delivering creative, customized solutions, while United Security Bank, founded in 1987, has championed community banking principles with exceptional customer service and local decision-making. Together, we will uphold these shared values as we expand our reach into additional rural communities throughout Central California, providing greater convenience for our clients and a commitment to banking for the underserved. Together we will offer a broader range of products, technologies and enhanced services for both business and personal banking clients.

The merger is expected to be completed during the second quarter of 2026. Our existing Executive team will continue to lead and serve the combined companies. The Board of Directors will remain under the leadership of Chairman Dan Doyle, and our headquarters will remain in Fresno. Until the merger is finalized, both banks will continue to operate independently. Please remain focused on delivering exceptional service to our clients and communities during this transition.

The attached press release has been distributed to the media and explains the details of the merger. The Frequently Asked Questions (FAQs) attached provides internal information that you may find helpful. Both items will be housed on the Intranet with ongoing communications for your reference.

We are committed to keeping you informed at every step of the way. Merger update sessions will be scheduled for each bank and additional resources, including expanded FAQs and a merger timeline, will be made available. If you have questions, email jodi.milton@communitywestbank.com. Also, progress updates will be shared during regular team calls and through dedicated Merger Milestones newsletter communication.

Our team has always been – and will be – the cornerstone of our success. This merger opens the door to new opportunities and responsibilities for all of us, including those who will join from United Security Bank. While details will continue to unfold in the months ahead, we want to express our sincere gratitude for the exceptional service and professionalism you demonstrate every day. Together, we are building a stronger, more resilient future for our clients, communities and team. Your dedication makes us proud and positions us for even greater achievements ahead.

James J. Kim

CEO and President, Community West Bank and CEO, Community West Bancshares

7100 North Financial Drive, Ste 101 | Fresno, CA 93720 | 800.298.1775 | communitywestbank.com

FAQ

What did United Security Bancshares (UBFO) disclose in this communication?

It disclosed that Community West Bancshares and Community West Bank have entered into a merger agreement to acquire United Security Bancshares and United Security Bank.

When is the Community West and United Security Bancshares (UBFO) merger expected to close?

The merger is expected to be completed during the second quarter of 2026, subject to the usual closing conditions and processes.

Who will lead the combined company after the UBFO merger with Community West?

The existing Community West executive team will continue to lead the combined companies, and the Board of Directors will remain under the leadership of Chairman Dan Doyle.

Where will the combined Community West and United Security Bancshares organization be headquartered?

The combined organization’s headquarters will remain in Fresno, California, at Community West’s current head office location.

How will Community West Bank and United Security Bank operate before the merger closes?

Until the merger is finalized, both banks will continue to operate independently, and employees are asked to stay focused on delivering exceptional client service.

What is the strategic goal of the Community West and United Security Bancshares (UBFO) merger?

The merger aims to combine two strong community banks, expand reach into additional rural Central California communities, and offer a broader range of products, technologies, and services.

How will employees be kept informed about the UBFO and Community West merger process?

Management plans merger update sessions, expanded FAQs, a merger timeline, and regular progress updates through team calls and a dedicated Merger Milestones newsletter.