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<TITLE>Filed by Bowne Pure Compliance</TITLE>
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<P style="font-size: 14pt" align="center"><B>UNITED STATES<BR>
SECURITIES AND
EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P style="font-size: 18pt" align="center"><B>FORM 8-K</B>

<P style="font-size: 12pt" align="center"><B>CURRENT REPORT<BR>
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P style="font-size: 10pt" align="center"><B>Date of Report (Date of earliest
event reported): September 17, 2008</B>


<P style="font-size: 20pt" align="center"><B>FIRST MERCURY FINANCIAL
CORPORATION<BR>
</B><FONT style="font-size: 10pt">(Exact name of registrant as
specified in its charter) </FONT>
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  <TD width="32%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
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  <TD width="32%">&nbsp;</TD>
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 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>Delaware</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>001-33077</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>38-3164336</B></TD>
 </TR>
 <TR valign="top">
  <TD>(State or other Jurisdiction of Incorporation)</TD>
  <TD>&nbsp;</TD>
  <TD>(Commission File Number)</TD>
  <TD>&nbsp;</TD>
  <TD>(IRS Employer Identification No.)</TD>
 </TR>

</TABLE>
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cellpadding="0" width="100%" border="0">

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  <TD width="49%">&nbsp;</TD>
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  <TD width="49%">&nbsp;</TD>
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 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>29110 Inkster Road<BR>
Suite
100<BR>
Southfield, Michigan<BR>
</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>48034</B></TD>
 </TR>
 <TR valign="top">
  <TD>(Address of Principal Executive Offices)</TD>
  <TD>&nbsp;</TD>
  <TD>(Zip Code)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="center">Registrant&#8217;s telephone number,
including area code: <B>(800) 762-6837</B>
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cellpadding="0" width="30%" border="0">

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  <TD style="border-bottom: #000000 1px solid" nowrap><B>Not
Applicable<BR>
</B></TD>
 </TR>
 <TR>
  <TD nowrap>(Former name or former address if changed since last report.)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="left">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 style="font-size: 10pt" align="left"><FONT face="Wingdings">o</FONT> Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P style="font-size: 10pt" align="justify"><B>Item&nbsp;7.01 Regulation&nbsp;FD
Disclosure</B>

<P style="font-size: 10pt" align="justify">First Mercury Financial Corporation
(&#8220;First Mercury&#8221;) posted a supplemental schedule on the Investor
Relations page of its website at <U>www.firstmercury.com</U> on Wednesday,
September&nbsp;17, 2008. The supplemental schedule contains information about
First Mercury&#8217;s investment holdings in the financial sector with specific
information about Freddie Mac, Lehman Brothers, and AIG. First Mercury is not
undertaking to update these materials. This report should not be deemed an
admission as to the materiality of any information contained in these materials.

<P style="font-size: 10pt" align="justify">The information furnished in this
report shall not be deemed &#8220;filed&#8221; for purposes of Section&nbsp;18
of the Securities Exchange Act of 1934, as amended, or otherwise subject to the
liabilities of that Section, nor shall such information be deemed incorporated
by reference in any filing under the Securities Act of 1933, as amended.

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<P style="font-size: 10pt; margin-left: 2%" align="justify"><B>SIGNATURE</B>

<P style="font-size: 10pt; margin-left: 2%; text-indent: 2%"
align="justify">Pursuant to the requirements of the Securities Exchange act of
1934, as amended, the company has duly caused this Report to be signed on its
behalf by the undersigned, thereunto duly authorized.
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  <TD>&nbsp;</TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid" nowrap align="center"><B>FIRST
MERCURY FINANCIAL CORPORATION</B></TD>
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<DIV style="margin-left: 0px; text-indent: 0px"><BR><B>DATE:</B> September&nbsp;18,
2008 </DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left"><BR><B>BY: /s/ John A. Marazza</B></TD>
 </TR>
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</TD>
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align="left">&nbsp;</TD>
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</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">John A. Marazza</TD>
 </TR>
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  <TD valign="top">
<DIV style="margin-left: 0px; text-indent: 0px">&nbsp;</DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Executive Vice President, Chief Financial
Officer and Corporate Secretary</TD>
 </TR>
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<P style="display: none; font-size: 10pt" align="center">3
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{"company-data": {"conformed-name": "FIRST MERCURY FINANCIAL CORP", "cik": "0000929186", "assigned-sic": "6331", "irs-number": "383164336", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-33077", "film-number": "081078440"}, "business-address": {"street1": "29621 NORTHWESTERN HWY", "street2": "PO BOX 5096", "city": "SOUTHFIELD", "state": "MI", "zip": "48034", "phone": "8103584010"}, "mail-address": {"street1": "29621 NORTHWESTERN HGWY", "street2": "PO BOX 5096", "city": "SOUTHFIELD", "state": "MI", "zip": "48086"}}
Filed by Bowne Pure Compliance
UNITED STATES
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
Date of Report (Date of earliest
event reported): September 17, 2008
FIRST MERCURY FINANCIAL
CORPORATION
(Exact name of registrant as
specified in its charter)
Delaware
001-33077
38-3164336
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
29110 Inkster Road
Suite
100
Southfield, Michigan
48034
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number,
including area code:
(800) 762-6837
Not
Applicable
(Former name or former address if changed since last report.)
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:
o
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
o
Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 7.01 Regulation FD
Disclosure
First Mercury Financial Corporation
("First Mercury") posted a supplemental schedule on the Investor
Relations page of its website at
www.firstmercury.com
on Wednesday,
September 17, 2008. The supplemental schedule contains information about
First Mercury's investment holdings in the financial sector with specific
information about Freddie Mac, Lehman Brothers, and AIG. First Mercury is not
undertaking to update these materials. This report should not be deemed an
admission as to the materiality of any information contained in these materials.
The information furnished in this
report shall not be deemed "filed" for purposes of Section 18
of the Securities Exchange Act of 1934, as amended, or otherwise subject to the
liabilities of that Section, nor shall such information be deemed incorporated
by reference in any filing under the Securities Act of 1933, as amended.
SIGNATURE
Pursuant to the requirements of the Securities Exchange act of
1934, as amended, the company has duly caused this Report to be signed on its
behalf by the undersigned, thereunto duly authorized.
FIRST
MERCURY FINANCIAL CORPORATION
DATE:
September 18,
2008
BY: /s/ John A. Marazza
John A. Marazza
Executive Vice President, Chief Financial
Officer and Corporate Secretary