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<P STYLE="margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">WASHINGTON, D.C. 20549</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">FORM 8-K</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">CURRENT REPORT PURSUANT</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">TO SECTION 13 OR 15(d) OF THE</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SECURITIES EXCHANGE ACT OF 1934</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">October 16, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Date of Report (Date of earliest event reported)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">UNITED SECURITY BANCSHARES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact Name of Registrant as Specified in
its Charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">California</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(State or Other Jurisdiction of Incorporation)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; padding: 0; text-align: center; text-indent: 0">000-32987</TD>
    <TD STYLE="width: 50%; padding: 0; text-align: center; text-indent: 0">91-2112732</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">(Commission</TD>
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">(IRS Employer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">File Number)</TD>
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">Identification No.)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">2126 Inyo Street, Fresno, CA</TD>
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">93721</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">(Address of Principal Executive Office)</TD>
    <TD STYLE="padding: 0; text-align: center; text-indent: 0">(Zip Code)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">559-248-4943</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Registrant's Telephone Number, Including
Area Code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Written communications pursuant to Rule 425 under the
Securities Act (17 CFR 230.425)</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Soliciting material pursuant to Rule 14a12 under the
Exchange Act (17 CFR 240.14a-12)</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">ITEM 2.02 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RESULTS OF OPERATIONS AND FINANCIAL CONDITION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">On October 16, 2012, United Security Bancshares issued a press
release reporting its financial results for the quarter ended September 30, 2012. A copy of such press release is attached, and
incorporated herein by reference as Exhibit 99.1</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">ITEM 9.01 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FINANCIAL STATEMENTS AND EXHIBITS.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(d)&#9;Exhibits.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">EXHIBIT #</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">99.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Press release of United Security Bancshares dated October
16, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SIGNATURES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">United Security Bancshares</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0; width: 50%">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 5%">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 45%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">Date: October 16, 2012</TD>
    <TD STYLE="padding: 0; text-indent: 0">By:</TD>
    <TD STYLE="padding: 0; text-indent: 0; border-bottom: Black 1pt solid">/s/ Richard Shupe</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Senior Vice President &amp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Chief Financial Officer</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">EXHIBIT INDEX</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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    <TD STYLE="width: 11%; padding-top: 0; padding-right: 0; border-bottom: Black 1pt solid; padding-left: 0; text-indent: 0">EXHIBIT #</TD>
    <TD STYLE="width: 1%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 88%; padding-top: 0; padding-right: 0; border-bottom: Black 1pt solid; padding-left: 0; text-indent: 0">DESCRIPTION</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">99.1</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Press release of United Security Bancshares dated September 30, 2012</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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</HTML>
[{"type": "8-K", "sequence": "1", "filename": "v325877_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 13052}]
{"company-data": {"conformed-name": "UNITED SECURITY BANCSHARES", "cik": "0001137547", "assigned-sic": "6021", "irs-number": "912112732", "state-of-incorporation": "CA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-32897", "film-number": "121146941"}, "business-address": {"street1": "1525 E SHAW AVENUE", "city": "FRESO", "state": "CA", "zip": "93710"}, "mail-address": {"street1": "1525 E SHAW AVENUE", "city": "FRESNO", "state": "CA", "zip": "93710"}}
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 16, 2012
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
(IRS Employer
File Number)
Identification No.)
2126 Inyo Street, Fresno, CA
93721
(Address of Principal Executive Office)
(Zip Code)
559-248-4943
(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))
ITEM 2.02      RESULTS OF OPERATIONS AND FINANCIAL CONDITION
On October 16, 2012, United Security Bancshares issued a press
release reporting its financial results for the quarter ended September 30, 2012. A copy of such press release is attached, and
incorporated herein by reference as Exhibit 99.1
ITEM 9.01      FINANCIAL STATEMENTS AND EXHIBITS.
(d)	Exhibits.
EXHIBIT #
99.1      Press release of United Security Bancshares dated October
16, 2012
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 16, 2012
By:
/s/ Richard Shupe
Senior Vice President &
Chief Financial Officer
EXHIBIT INDEX
EXHIBIT #
DESCRIPTION
99.1
Press release of United Security Bancshares dated September 30, 2012