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

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

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

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT<BR STYLE="mso-special-character: line-break">
<BR STYLE="mso-special-character: line-break">
</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section&nbsp;13 or 15(d)
of the<BR STYLE="mso-special-character: line-break">
</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Securities Exchange Act of 1934</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Date of Report (Date of Earliest Event
Reported): July 12, 2012</B></P>

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

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>MUSCLEPHARM CORPORATION</B></P>

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

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

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
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    <TD STYLE="width: 32%">
        <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></TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 31%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 31%">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">Nevada</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">000-53166</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">77-0664193</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center">(State or Other Jurisdiction<BR> of Incorporation)</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: center">(Commission File Number)</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: center">(IRS Employer Identification No.)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>4721 Ironton Street, Building A</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Denver, Colorado 80239</B>&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Address of Principal Executive Offices)<BR>
<BR>
<B>(303) 396-6100</B></P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Former Name or Former Address if Changed
Since Last Report)</P>

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

<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
(<I>see </I>General Instruction A.2. below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#9;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Wingdings">o</FONT>
Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Wingdings">o</FONT>
Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Wingdings">o</FONT>
Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)).</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Wingdings">o</FONT>
Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-14(c)).</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">&nbsp;</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="color: black">On July 12, 2012,
MusclePharm Corporation (the &ldquo;Company&rdquo;) announced </FONT>that three of its senior executives have voluntarily agreed
to return stock and cash bonuses received for 2011 and have relinquished 2012 bonus accruals associated with their existing employment
agreements. The 2011 bonuses were based in part on revenue growth that the Company determined recently had been incorrectly calculated
as previously reported in the Company's amended Current Reports on Form 8-K filed with the Securities and Exchange Commission on
May 25, 2012 and July 9, 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-indent: 0.5in"><FONT STYLE="color: black">In
May 2012, the Company revised the methodology for accruing revenues to more accurately portray the Company&rsquo;s
operations. Following the revision, gross revenues were restated downward for certain prior periods, including the year ended
December 31, 2011. The three executives have volunteered to reduce both the cash and share amounts awarded for 2011 based on
the restated revenue amounts, as well giving up such bonuses accrued for 2012. </FONT>In total for 2011, each of Brad J.
Pyatt (Principal Executive Officer), Jeremy DeLuca (President and Chief Marketing Officer) and Cory Gregory (Senior
President) are returning 26,357,328 shares of the Company&rsquo;s common stock and giving back cash bonuses of $30,000 or a
total for all executive officers of 79,071,084 shares and $90,000.<FONT STYLE="color: black"> No other executives received or were
entitled to any such bonuses. </FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</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"><B>SIGNATURES</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: justify">&nbsp;&nbsp;&#9;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; text-align: justify">&nbsp;</P>

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

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; font-weight: bold">MUSCLEPHARM CORPORATION</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; width: 49%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 3%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 31%">&nbsp;</TD>
    <TD STYLE="width: 15%">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">Dated: July 18, 2012</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">By:</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; border-bottom: Black 1pt solid">/s/ Brad J. Pyatt</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top">Brad J. Pyatt, Chief Executive Officer</TD></TR>
</TABLE>
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{"company-data": {"conformed-name": "MusclePharm Corp", "cik": "0001415684", "assigned-sic": "2834", "irs-number": "770664193", "state-of-incorporation": "NV", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-53166", "film-number": "12968329"}, "business-address": {"street1": "4721 IRONTON STREET", "city": "DENVER", "state": "CO", "zip": "80239", "phone": "(800) 210-7369"}, "mail-address": {"street1": "4721 IRONTON STREET", "city": "DENVER", "state": "CO", "zip": "80239"}, "former-company": {"former-conformed-name": "Tone in Twenty", "date-changed": "20071018"}}
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): July 12, 2012
MUSCLEPHARM CORPORATION
(Exact Name of Registrant as Specified in
Charter)
Nevada
000-53166
77-0664193
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
4721 Ironton Street, Building A
Denver, Colorado 80239
(Address of Principal Executive Offices)
(303) 396-6100
(Registrant's Telephone Number, Including
Area Code)
N/A
(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
(
see
General Instruction A.2. below):
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-14(c)).
Item 5.02. Departure of Directors or Certain Officers; Election
of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On July 12, 2012,
MusclePharm Corporation (the "Company") announced
that three of its senior executives have voluntarily agreed
to return stock and cash bonuses received for 2011 and have relinquished 2012 bonus accruals associated with their existing employment
agreements. The 2011 bonuses were based in part on revenue growth that the Company determined recently had been incorrectly calculated
as previously reported in the Company's amended Current Reports on Form 8-K filed with the Securities and Exchange Commission on
May 25, 2012 and July 9, 2012.
In
May 2012, the Company revised the methodology for accruing revenues to more accurately portray the Company's
operations. Following the revision, gross revenues were restated downward for certain prior periods, including the year ended
December 31, 2011. The three executives have volunteered to reduce both the cash and share amounts awarded for 2011 based on
the restated revenue amounts, as well giving up such bonuses accrued for 2012.
In total for 2011, each of Brad J.
Pyatt (Principal Executive Officer), Jeremy DeLuca (President and Chief Marketing Officer) and Cory Gregory (Senior
President) are returning 26,357,328 shares of the Company's common stock and giving back cash bonuses of $30,000 or a
total for all executive officers of 79,071,084 shares and $90,000.
No other executives received or were
entitled to any such bonuses.
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.
MUSCLEPHARM CORPORATION
Dated: July 18, 2012
By:
/s/ Brad J. Pyatt
Brad J. Pyatt, Chief Executive Officer