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

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

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

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Pursuant to Section 13 or 15(d)<BR>
of the Securities Exchange Act of 1934</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Date of Report: <U>October 18, 2012</U></P>

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

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<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>

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    <TD STYLE="width: 34%; padding-right: 5.4pt; padding-left: 5.4pt; text-decoration: underline; text-align: center">Wisconsin</TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; text-decoration: underline; text-align: center">000-31207</TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; text-decoration: underline; text-align: center">39-2004336</TD></TR>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(State or other jurisdiction</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;(Commission</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;(I.R.S. Employer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">of incorporation)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">File Number</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">Identification No.)</TD></TR>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
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    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; text-decoration: underline; text-align: center">4949 West Brown Deer Road, Milwaukee, Wisconsin</TD>
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; text-decoration: underline; text-align: center">53223</TD></TR>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Address of principal executive offices)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Zip Code)</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Registrant&rsquo;s telephone number, including
area code:<BR>
<U>(414) 354-1500 </U></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">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
(see General Instruction A.2. below):</P>

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    <TD STYLE="width: 0.5in; padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><U>Item 2.02.&#9; Results of Operations and Financial Condition.</U></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">On October 18, 2012, Bank Mutual Corporation announced its results
for the three months and nine months ended September 30, 2012. A copy of Bank Mutual&rsquo;s related press release is furnished
to the Commission by attaching it as Exhibit 99.1 to this report.</P>

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

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

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<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>

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    <TD STYLE="padding: 0; text-indent: 0">Date:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; padding: 0; text-align: center">October 18, 2012</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">BANK MUTUAL CORPORATION</TD></TR>
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    <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>
    <TD COLSPAN="2" STYLE="padding: 0 0 0 0.36in; text-indent: 0">(Registrant)</TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
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    <TD STYLE="width: 5%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 20%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 33%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 4%; padding: 0; text-indent: 0">By:</TD>
    <TD STYLE="width: 38%; border-bottom: windowtext 1pt solid; padding: 0; text-indent: 0">/s/Michael W. Dosland</TD></TR>
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    <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>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Michael W. Dosland</TD></TR>
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    <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>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Senior Vice President and Chief Financial Officer</TD></TR>
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{"company-data": {"conformed-name": "BANK MUTUAL CORP", "cik": "0001123270", "assigned-sic": "6035", "irs-number": "392004336", "state-of-incorporation": "WI", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-31207", "film-number": "121151522"}, "business-address": {"street1": "4949 W. BROWN DEER RD", "city": "BROWN DEER", "state": "WI", "zip": "53223", "phone": "4143626113"}, "mail-address": {"street1": "4949 W. BROWN DEER RD", "city": "BROWN DEER", "state": "WI", "zip": "53223"}}
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:
October 18, 2012
BANK MUTUAL CORPORATION
(Exact name of registrant as specified in its charter)
Wisconsin
000-31207
39-2004336
(State or other jurisdiction
(Commission
(I.R.S. Employer
of incorporation)
File Number
Identification No.)
4949 West Brown Deer Road, Milwaukee, Wisconsin
53223
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including
area code:
(414) 354-1500
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
(see General Instruction A.2. below):
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 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 18, 2012, Bank Mutual Corporation announced its results
for the three months and nine months ended September 30, 2012. A copy of Bank Mutual's related press release is furnished
to the Commission by attaching it as Exhibit 99.1 to this report.
* * * * *
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.
Date:
October 18, 2012
BANK MUTUAL CORPORATION
(Registrant)
By:
/s/Michael W. Dosland
Michael W. Dosland
Senior Vice President and Chief Financial Officer
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2
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