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<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 12pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

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

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

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

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

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

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

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

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

<P STYLE="font: bold 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">Date of Report (Date of earliest event reported):&#9;<U>September
24, 2012</U></P>

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

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MUELLER
INDUSTRIES, INC.<FONT STYLE="font-weight: normal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
</FONT></U><FONT>(Exact name of registrant as specified in its charter)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left">&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: 34%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: left; text-decoration: underline"><U>&nbsp;&nbsp;&nbsp;<B>Delaware&nbsp;&nbsp;&nbsp;</B></U></TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold"><B><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1-6770&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></B></TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; text-decoration: underline">&nbsp;&nbsp;&nbsp;&nbsp;25-0790410&nbsp;&nbsp;&nbsp;&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">(State or other</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Commission File</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(IRS Employer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">jurisdiction of</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">Number)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">Identification No.)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">incorporation)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;</TD></TR>
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<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">&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-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold">&nbsp; 8285 Tournament Drive Suite 150</TD>
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; text-decoration: underline">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Memphis, Tennessee&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; text-decoration: underline">&nbsp;&nbsp;&nbsp;&nbsp;38125&nbsp;&nbsp;&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <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">&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">Registrant&rsquo;s telephone number, including
area code: &#9;<B> <U>(901) 753-3200</U></B></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">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>Not Applicable<BR>
</U></B>(Former name or former address, if changed since last report)</P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&#9;Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&#9;Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&#9;Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&#9;Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5.02 Departure of Directors or Certain Officers; Election
of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(b) The information set forth in Item
5.02 of the Current Report on Form 8-K filed by Mueller Industries, Inc. (the &ldquo;Company&rdquo;) with the Securities and
Exchange Commission at approximately 9 a.m. on September 24, 2012, is incorporated by reference into this Item 5.02. On
September 24, 2012, in connection with the closing of the Company&rsquo;s previously announced share repurchase transaction,
Ian M. Cumming and Joseph S. Steinberg resigned from the Board of Directors of the Company, effective immediately.</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"><B>Item 8.01 Other Events.</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The information set forth in Item 1.01 of
the Current Report on Form 8-K filed by the Company with the Securities and Exchange Commission at approximately 9 a.m. on September 24, 2012,
is incorporated by reference into this Item 8.01. On September 24, 2012, the Company and the other parties thereto consummated
the previously announced share repurchase transaction, pursuant to which the Company repurchased 10,422,859 shares of the Company&rsquo;s
common stock owned by BEI-Longhorn, LLC, a wholly owned subsidiary of Leucadia National Corporation, at a price per share of $41.00.</P>

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

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

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

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 40%; padding-top: 9pt; padding-bottom: 12pt; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 60%; padding-top: 9pt; padding-bottom: 12pt; padding-left: 0">MUELLER INDUSTRIES, INC.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 9pt; padding-left: 0">Dated:&nbsp; September 24, 2012</TD>
    <TD STYLE="padding-top: 9pt; padding-left: 0">By:<U>&nbsp;/s/ Gary C. Wilkerson&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-left: 0">Name:&nbsp; Gary C. Wilkerson</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-left: 0">Title: &nbsp;Vice President, General Counsel and Secretary</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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{"company-data": {"conformed-name": "MUELLER INDUSTRIES INC", "cik": "0000089439", "assigned-sic": "3350", "irs-number": "250790410", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-06770", "film-number": "121107133"}, "business-address": {"street1": "SUITE 150", "street2": "8285 TOURNAMENT DRIVE", "city": "MEMPHIS", "state": "TN", "zip": "38125", "phone": "(901)753-3200"}, "mail-address": {"street1": "SUITE 150", "street2": "8285 TOURNAMENT DRIVE", "city": "MEMPHIS", "state": "TN", "zip": "38125"}, "former-company": {"former-conformed-name": "SHARON STEEL CORP", "date-changed": "19910103"}}
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
24, 2012
MUELLER
INDUSTRIES, INC.
(Exact name of registrant as specified in its charter)
Delaware
1-6770
25-0790410
(State or other
(Commission File
(IRS Employer
jurisdiction of
Number)
Identification No.)
incorporation)
8285 Tournament Drive Suite 150
Memphis, Tennessee
38125
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including
area code:
(901) 753-3200
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:
¨
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 5.02 Departure of Directors or Certain Officers; Election
of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
(b) The information set forth in Item
5.02 of the Current Report on Form 8-K filed by Mueller Industries, Inc. (the "Company") with the Securities and
Exchange Commission at approximately 9 a.m. on September 24, 2012, is incorporated by reference into this Item 5.02. On
September 24, 2012, in connection with the closing of the Company's previously announced share repurchase transaction,
Ian M. Cumming and Joseph S. Steinberg resigned from the Board of Directors of the Company, effective immediately.
Item 8.01 Other Events.
The information set forth in Item 1.01 of
the Current Report on Form 8-K filed by the Company with the Securities and Exchange Commission at approximately 9 a.m. on September 24, 2012,
is incorporated by reference into this Item 8.01. On September 24, 2012, the Company and the other parties thereto consummated
the previously announced share repurchase transaction, pursuant to which the Company repurchased 10,422,859 shares of the Company's
common stock owned by BEI-Longhorn, LLC, a wholly owned subsidiary of Leucadia National Corporation, at a price per share of $41.00.
-
2
-
SIGNATURE
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.
MUELLER INDUSTRIES, INC.
Dated:  September 24, 2012
By:
/s/ Gary C. Wilkerson
Name:  Gary C. Wilkerson
Title:  Vice President, General Counsel and Secretary
-
3
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