<SEC-DOCUMENT>0001188112-14-000730.txt : 20140319
<SEC-HEADER>0001188112-14-000730.hdr.sgml : 20140319
<ACCEPTANCE-DATETIME>20140319165206
ACCESSION NUMBER:		0001188112-14-000730
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20140319
DATE AS OF CHANGE:		20140319
EFFECTIVENESS DATE:		20140319

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SILICON LABORATORIES INC
		CENTRAL INDEX KEY:			0001038074
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				742793174
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-29823
		FILM NUMBER:		14704510

	BUSINESS ADDRESS:	
		STREET 1:		400 W CESAR CHAVEZ
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78701
		BUSINESS PHONE:		5124168500

	MAIL ADDRESS:	
		STREET 1:		400 W CESAR CHAVEZ
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78701
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>t78681_defa14a.htm
<DESCRIPTION>DEFINITIVE ADDITIONAL MATERIALS
<TEXT>

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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Washington, D.C. 20549</font></font></div>

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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt">SCHEDULE 14A INFORMATION</font></div>

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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Proxy Statement Pursuant to Section 14(a) of the Securities </font></font></div>

<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Exchange Act of 1934 (Amendment No. ___)</font></font></div>

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<td width="9%"><font size="2">Filed by the Registrant <font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">x</font></font></td>
<td width="33%"><font size="2">Filed by a Party other than the Registrant&#160;<font style="FONT-FAMILY: wingdings">o</font></font></td>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Check the appropriate box:</font><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font></div>

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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">o</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Preliminary Proxy Statement</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">o</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings">o</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Definitive Proxy Statement</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-FAMILY: wingdings">x</font></font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Definitive Additional Materials</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">o</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Soliciting Material Pursuant to <font style="DISPLAY: inline; FONT-FAMILY: times new roman">&#167;</font><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">240.14a-12</font></font></div>
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<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 12pt; FONT-WEIGHT: bold">Silicon&#160;Laboratories Inc.</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(Name of Registrant as Specified In Its Charter)</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman, serif; FONT-SIZE: 1pt">&#160; </font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Payment of Filing Fee (Check the appropriate box):</font></div>

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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">x</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">No fee required.</font></div>
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<td align="left" colspan="3" valign="top" width="70%">&#160;</td>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">o</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11. </font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(1)</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Title of each class of securities to which transaction applies:&#160; N/A</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(2)</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Aggregate number of securities to which transaction applies:&#160; N/A</font></div>
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<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font size="2">(3)</font></div>
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<td align="left" colspan="2" valign="top" width="67%"><font size="2">Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule</font></td>
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<td align="left" valign="top" width="2%">&#160;</td>
<td align="left" colspan="2" valign="top" width="67%"><font size="2">0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):</font></td>
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<td align="left" valign="top" width="2%">&#160;</td>
<td align="left" colspan="2" valign="top" width="67%"><font size="2">N/A</font></td>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(4)</font></div>
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<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Proposed maximum aggregate value of transaction:&#160; N/A</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(5)</font></div>
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<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Total fee paid:&#160; N/A</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<td align="left" valign="middle" width="2%">&#160;</td>
<td align="left" colspan="2" valign="middle" width="67%">&#160;</td>
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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: wingdings; FONT-SIZE: 10pt">o</font></div>
</td>
<td align="left" colspan="3" valign="top" width="70%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Fee paid previously with preliminary materials.</font></div>
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<td align="left" valign="top" width="2%">&#160;</td>
<td align="left" colspan="3" valign="top" width="70%">&#160;</td>
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<td align="left" valign="top" width="2%"><font size="2"><font style="FONT-FAMILY: wingdings">o</font><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></font></td>
<td align="left" colspan="3" valign="top" width="70%"><font size="2">Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the</font></td>
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<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font size="2">filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number,</font></div>
</td>
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<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font size="2">or the Form or Schedule and the date of its filing:</font></div>
</td>
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<td align="left" valign="top" width="2%">&#160;</td>
<td align="left" colspan="3" valign="top" width="70%">&#160;</td>
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</div>

<div>
<table cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(1)</font></div>
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<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Amount previously paid:&#160; N/A</font></div>
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<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(2)</font></div>
</td>
<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Form, Schedule or Registration Statement No.:&#160; N/A</font></div>
</td>
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<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(3)</font></div>
</td>
<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Filing party:&#160; N/A</font></div>
</td>
</tr><tr>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
</td>
<td align="left" valign="top" width="2%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(4)</font></div>
</td>
<td align="left" colspan="2" valign="top" width="67%">
<div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Date Filed:&#160; N/A</font></div>
</td>
</tr></table>
</div>
</div>

<div style="TEXT-ALIGN: left; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt">&#160;</DIV></DIV>

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<div style="TEXT-ALIGN: left; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt">&#160;<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SILICON LABORATORIES INC.<BR>
400 West Cesar Chavez<BR>
Austin, Texas 78701<BR>
<BR>
</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: center">_____________________________________________</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SUPPLEMENT TO THE PROXY STATEMENT<BR>
FOR THE ANNUAL MEETING OF STOCKHOLDERS<BR>
TO BE HELD ON APRIL 15, 2014</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">_____________________________________________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">Silicon Laboratories
Inc. (the &ldquo;Company,&rdquo; &ldquo;we,&rdquo; &ldquo;us,&rdquo; &ldquo;our&rdquo;) is providing this supplement to the proxy
statement (the &ldquo;Proxy Statement&rdquo;) that the Company furnished to its stockholders in connection with the solicitation
of proxies by the Board of Directors of the Company for the Annual Meeting of the Stockholders of the Company to be held on April
15, 2014 at 9:30 a.m. Central Time at the Lady Bird Johnson Wildflower Center, 4801 La Crosse Avenue, Austin, Texas 78739, or at
any adjournment thereof. This supplement (&ldquo;Supplement&rdquo;) to the Proxy Statement is being filed with the Securities and
Exchange Commission and made available to stockholders on March 19, 2014. Capitalized terms used in this Supplement and not otherwise
defined have the meaning given to such terms in the Proxy Statement. Only stockholders of record on the close of business on February
19, 2014 (the &ldquo;Record Date&rdquo;) are entitled to receive notice of and to vote at the Annual Meeting.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center; text-indent: 0in"><B>THE PROXY STATEMENT
CONTAINS IMPORTANT ADDITIONAL INFORMATION AND THIS SUPPLEMENT SHOULD BE READ IN CONJUNCTION WITH THE PROXY STATEMENT.</B></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 12pt">Supplemental Disclosure Concerning Proposal Four</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">In evaluating the
proposed amendment to the Company&rsquo;s 2009 Stock Incentive Plan (the &ldquo;2009 Plan&rdquo;) listed as Proposal Four of the
Proxy Statement, the Company&rsquo;s Board of Directors (the &ldquo;Board&rdquo;) approved an increase of the shares of common
stock available for future issuance under the 2009 Plan by 3,100,000, subject to stockholder approval.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">In determining
the number of additional shares of common stock to allocate to the 2009 Plan, the Company engaged a professional corporate governance
firm to analyze various metrics, including burn rate and dilution. The Company considered information published by Institutional
Shareholder Services (&ldquo;ISS&rdquo;) as well as the proxy voting guidelines of certain institutional shareholders.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">ISS utilizes its
proprietary modeling tools to (i) evaluate the estimated cost to stockholders of equity incentive plans (referred to by ISS as
the Shareholder Value Transfer (&ldquo;SVT&rdquo;)) and (ii) evaluate whether such cost is reasonable (in the opinion of ISS) by
comparing it to an allowable cap. ISS expresses SVT in dollar terms and as a percentage of market value (i.e., average share price
times shares of common stock outstanding). The allowable cap is industry-specific and market capitalization-based, and pegged to
the average amount paid by companies performing in the top quartile of their peer groupings. The Company estimated that the SVT
of the 2009 Plan (as amended, with an allocation of 3,100,000 additional shares of common stock) would be within the industry-specific
SVT cap that applies to the Company. Therefore, management believes that ISS&rsquo;s guidelines would support an increase in the
share limit for the 2009 Plan of 3,100,000 shares of common stock because the corresponding SVT should be considered reasonable
by ISS.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">In addition to
SVT criteria, ISS also considers a Company&rsquo;s historical gross burn rate. The gross burn rate is the gross number of equity
award shares granted in a given year divided by the weighted average shares of common stock outstanding for the same year. &ldquo;Full-value
awards&rdquo; (i.e., awards other than options or stock appreciation rights) are multiplied by a factor published by ISS relative
to stock price volatility (in the Company&rsquo;s case, this factor was 2.5 for purposes of gross burn rate calculation). Gross
burn rate, unlike net burn rate, excludes the add-back of cancelled or forfeited equity awards in the calculation. ISS also includes
performance shares in the gross burn rate computations once the shares are earned.</P></DIV>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">The Company&rsquo;s
calculated three-year average gross burn rate using ISS&rsquo;s calculation methodology at approximately 5.17%, which is below
our industry gross burn rate cap of 6.72% (as published by ISS for 2014 stockholder meetings after January 2014 for the semiconductors
and semiconductor equipment industry Russell 3000 companies). Disregarding the 2.5 multiplier applied by ISS, the three-year average
burn rate was 2.07%. The burn rate calculations are based on the following equity award grant activity for the previous three years:</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: #CCCCCC">
    <TD STYLE="width: 43%; border: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">&nbsp;</TD>
    <TD STYLE="width: 19%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center"><B>2011 (Actual)</B></TD>
    <TD STYLE="width: 19%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center"><B>2012 (Actual)</B></TD>
    <TD STYLE="width: 19%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center"><B>2013 (Actual)</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Shares Granted</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">752,649</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">778,282</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">1,119,003</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Shares Granted (Adjusted 2.5x for ISS)</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">1,881,623</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">1,945,705</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">2,797,508</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Weighted Avg. Basic Shares</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">43,421,146</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">42,135,708</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: right; text-indent: 0.5in">42,714,597</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 35.3pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 35.3pt">The Board considered
the Company&rsquo;s prospective equity compensation requirements and the dilutive impact of the proposed share increase under the
2009 Plan. The Board noted that the Company&rsquo;s full dilution ratio (measured as estimated total overhang divided by total
overhang plus estimated outstanding shares as of the Record Date) assuming approval of the proposed 3,100,000 share increase would
be less than the mean and median full dilution ratio of the companies in the Company&rsquo;s GICS industry classification.<FONT STYLE="font-size: 10pt"><SUP>[1]</SUP></FONT>
The dilution methodology considered by the Board and applying the share counts as of the Record Date is shown below.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="width: 80%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: #D9D9D9">
    <TD STYLE="width: 73%; border: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">&nbsp;</TD>
    <TD STYLE="width: 27%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in"><B>Shares</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Outstanding Options</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">897,869</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Outstanding Full Value Awards</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">2,121,192</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Shares Available</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">940,631<SUP>1</SUP></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">New Shares Requested</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">3,100,000</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Estimated Total Overhang <B>(A)</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">7,059,692</TD></TR>
<TR STYLE="vertical-align: top; background-color: #D9D9D9">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">&nbsp;</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.5in">Outstanding Shares on Record Date <B>(B)</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">43,213,599</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 17.1pt">Silicon Laboratories Basic Dilution Ratio (A/B)</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in">16.3%</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 17.1pt"><B>Silicon Laboratories Full Dilution Ratio (A/(A+B))</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in"><B>14.0%</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.55in"><B>GICS</B> <B>Full Dilution Ratio &ndash; Mean</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in"><B>21.5%</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-indent: 0.55in"><B>GICS Full Dilution Ratio &ndash; Median</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; text-align: center; text-indent: 0.5in"><B>19.7%</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 9pt 0 12pt; text-indent: 35.3pt">(1) The 940,631 Shares Available will
be reduced by 1.55 shares for each share subject to any full value award.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 9pt 0 12pt; text-align: justify; text-indent: 35.3pt">After considering
the foregoing, the Company forecasted that an increase of 3,100,000 shares would be appropriate to satisfy expected equity compensation
needs until the Company&rsquo;s annual meeting of stockholders in 2017. Accordingly, the stockholders are being asked to approve
Proposal Four which would increase the number of shares reserved for issuance pursuant to awards granted under 2009 Plan by 3,100,000
additional shares (for a total of 9,900,000 shares). If stockholders approve Proposal Four, approximately 4,040,631 shares of common
stock would be available for the grant of new awards under the 2009 Plan as of the Record Date.</P>



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<P STYLE="font: 10pt Calibri, Helvetica, Sans-Serif; margin: 0"><SUP>1</SUP><FONT STYLE="font-family: Times New Roman, Times, Serif">
The Global Industry Classification Standard (&ldquo;GICS&rdquo;) was developed by Standard &amp; Poor&rsquo;s and MSCI I to provide
a global standard industry classification system.</FONT></P>

<P STYLE="font: 10pt Calibri, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0; margin-right: 0; margin-left: 0">Note Regarding Forecasts and Forward-Looking Statements</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">We do not typically
make public forecasts as to our utilization of equity-based awards due to the unpredictability of the underlying assumptions and
estimates. The inclusion of the forecast in this Supplement should not be regarded as an indication that the forecast will be predictive
of actual future outcomes, and the forecast should not be relied upon as such. Neither we nor any other person makes any representation
to any of our stockholders regarding actual outcomes compared to the information contained in the forecasts set forth above. The
forecast is not fact and reflects numerous assumptions and estimates as to future events made by our management that our management
believed were reasonable at the time the forecast was prepared and other factors such as industry performance and general business,
economic, regulatory, market and financial conditions, as well as factors specific to our business (including any acquisition activity
that we may undertake) all of which are difficult to predict and many of which are beyond the control of our management. In addition,
the forecast does not take into account any circumstances or events occurring after the date that the forecast was prepared and,
accordingly, does not give effect to any changes to our operations or strategy that may be implemented in the future. Accordingly,
actual outcomes may be materially different than those reflected in the forecast. We do not intend to update or otherwise revise
the forecast to reflect circumstances existing after the date when made or to reflect the occurrence of future events even if any
or all of the assumptions underlying the forecast are shown to be in error. The forecast is a forward-looking statement within
the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21A of the Securities Exchange Act of 1934, as
amended. These statements involve risks and uncertainties that could cause actual outcomes to differ materially from those in the
forward-looking statements, including our ability to attract and retain talent, achievement of performance metrics with respect
to certain equity-based awards, and others described in our Form 10-K for the year ended December 28, 2013.</P>

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><B>IF YOU HAVE ALREADY VOTED AND DO NOT WISH
TO CHANGE YOUR VOTE, YOU DO NOT NEED TO DO ANYTHING. YOUR VOTE WILL BE TABULATED AS YOU INSTRUCTED. </B></P>

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


<DIV STYLE="text-align: left; display: block; margin-left: 0pt; margin-right: 0pt"><P STYLE="font: 10pt Times New Roman, Times, Serif"></P>

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