Form 12b-25: Notification of Late Filing

United States
Securities and Exchange Commission
Washington, D.C. 20549

FORM 12b-25

Notification of Late Filing

(Amendment No. 0)*

OMB Number
3235-0058
SEC File Number
000-32897
CUSIP Number
911460103
(Check one):   Form 10-K   Form 20-F   Form 11-KForm 10-Q   Form 10-D   Form N-SAR
  Form N-CSR
For Period Ended:September 30, 2011  
  Transition Report on Form 10-K
  Transition Report on Form 20-F
  Transition Report on Form 11-K
  Transition Report on Form 10-Q
  Transition Report on Form N-SAR
For the Transition Period Ended:  

Read Instruction (on back page) Before Preparing Form. Please Print or Type.

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:
 

Part I - Registrant Information

UNITED SECURITY BANCSHARES
Full Name of Registrant
 
Former Name if Applicable
2126 Inyo Street
Address of Principal Executive Office (Street and Number)
Fresno, CA 93721
City, State and Zip Code

Part II - Rules 12b-25(b) and (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed.(Check box if appropriate.)

(a)The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense.
(b)The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
(c)The accountant's statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

Part III - Narrative

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q,10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

Although management of United Security Bancshares (the “Company”), has been working diligently to complete all the required information for its Form 10-Q for the quarter ended September 30, 2011, and a substantial part of such information has been completed as of this date, the Company and its auditors require additional time to complete the preparation of the Company’s financial statements for the quarter ended September 30, 2010 and other related disclosures in the Form 10-Q. The Company’s ability to complete its Form 10Q for the quarter ended September 30, 2011 has been further impeded by the recent and unexpected illness of the Company’s Chief Financial Officer.

The Form 10-Q will be filed as soon as possible (and no later than the fifth calendar day following the prescribed due date).

Part IV - Other Information

  1. Name and telephone number of person to contact in regard to this notification

    Ken L. Donahue559248-0468
    (Name)(Area Code)(Telephone Number)
  2. Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed?

    Yes  No   
    If answer is no, identify report(s).
     
  3. Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?

    Yes  No   
    If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.
    At present, the Company’s best reasonable estimate is that it will report an after-tax net loss of approximately $4.8 million for the quarter ended September 30, 2011 and an after-tax net loss of approximately $7.5 million for the nine months ended September 30, 3011, as compared to an after-tax net income of $411,000 for the quarter ended September 30, 2010 and an after-tax net income of $1.4 million for the nine months ended September 30, 2010. The difference in the after-tax net loss of $4.8 million for the quarter ended September 30, 2011 and the after-tax net income of $411,000 for the quarter ended September 30, 2010, and the difference in the after-tax net loss of $7.5 million for the nine months ended September 30, 2011 and the after-tax net income of $1.4 million for the nine months ended September 30, 2010 is a result of additional pre-tax provisions for loan losses of approximately $6.9 million and $9.1 million, respectively. The largest factor contributing to the increased provisions is the continued protraction of real estate values in California, and specifically those counties in which the Company operates. At September 30, 2011, the Company’s subsidiary United Security Bank has an estimated total risk-based capital ratio of 13.64%, a Tier 1 capital ratio of 12.41% and a leverage ratio of 9.77%. The Company itself has an estimated total risk-based capital ratio of 13.15%, a Tier 1 capital ratio of 11.89% and a leverage ratio of 9.32% as of September 30, 2011.
United Security Bancshares
(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized

Date:11-14-2011By /s/Ken L. DonahueTitle:EVP/CAO

INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative's authority to sign on behalf of the registrant shall be filed with the form.

Attention

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).