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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">As filed with the Securities and Exchange Commission on May&nbsp;18, 2007 Registration
No.&nbsp;333-<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>
<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>CAVIUM NETWORKS, INC.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
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<TR valign="bottom">
    <TD align="center" valign="top"><B>Delaware</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>77-0558625</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State of Incorporation)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Cavium Networks, Inc.<BR>
805 East Middlefield Road<BR>
Mountain View, California 94043<BR>
(650)&nbsp;623-7000</B></DIV>

<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>


<DIV align="center" style="font-size: 10pt">(Address of principal executive offices)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>2001 Stock Incentive Plan<BR>
2007 Equity Incentive Plan</B></DIV>

<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>


<DIV align="center" style="font-size: 10pt">(Full title of the plans)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Syed Ali<BR>
President and Chief Executive Officer<BR>
Mountain View, California 94043<BR>
(650)&nbsp;623-7000</B><BR>
(Name, address, including zip code, and telephone number, including area code, of agent for service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 1pt">Copies to:<BR>
<B>Vincent P. Pangrazio, Esq.<BR>
Cooley Godward Kronish LLP<BR>
Five Palo Alto Square<BR>
3000 El Camino Real<BR>
Palo Alto, CA 94306-2155<BR>
(650)&nbsp;843-5000</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>CALCULATION OF REGISTRATION FEE</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="11%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed Maximum</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed Maximum</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">Title of Securities</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Offering</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Aggregate</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount of</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">to be Registered</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount to be Registered <SUP style="font-size: 85%; vertical-align: text-top">(1)</SUP></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Price per Share</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Offering Price</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Registration Fee</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Stock, par value<BR>
$0.001 per share</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD colspan="3" align="center" style="border-top: 1px solid #000000">4,382,534 shares <SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" style="border-top: 1px solid #000000">8.39</TD>
    <TD nowrap style="border-top: 1px solid #000000"> <SUP style="font-size: 85%; vertical-align: text-top">(4)</SUP></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 1px solid #000000">$36,769,460.26</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" style="border-top: 1px solid #000000">1,128.82</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Stock, par value<BR>
$0.001 per share</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD colspan="3" align="center" style="border-top: 1px solid #000000">5,000,000 shares <SUP style="font-size: 85%; vertical-align: text-top">(3)</SUP></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" style="border-top: 1px solid #000000">17.32</TD>
    <TD nowrap style="border-top: 1px solid #000000"><SUP style="font-size: 85%; vertical-align: text-top"> (5)</SUP></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 1px solid #000000">$86,600,000.00</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" style="border-top: 1px solid #000000">2,658.62</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 0px solid #000000">&nbsp;</TD>

<TD align="center" style="border-top: 0px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Total</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 0px solid #000000">9,382,534</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 0px solid #000000">N/A</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 0px solid #000000">&nbsp;</TD>

<TD align="center" style="border-top: 0px solid #000000" nowrap>$123,369,460.26</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 0px solid #000000">&nbsp;</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 0px solid #000000">$</TD>
    <TD align="right" style="border-top: 0px solid #000000">3,787.44</TD>
    <TD style="border-top: 0px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 0px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

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</TABLE>
</DIV>


<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 3pt; width: 18%; border-top: 0px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;416(a), this Registration Statement shall also cover any additional
shares of Registrant&#146;s Common Stock that become issuable under the plan by reason of
any stock dividend, stock split, recapitalization or other similar transaction effected
without receipt of consideration that increases the number of outstanding shares of
Registrant&#146;s Common Stock.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Represents 4,382,534 shares of Common Stock reserved for future issuance upon the
exercise of options granted under the Cavium Networks, Inc. 2001 Stock Incentive Plan
(the &#147;2001 Plan&#148;). Upon the effective date of the initial public offering of the
Registrant&#146;s Common Stock, as set forth in the Registrant&#146;s Prospectus (the
&#147;Prospectus&#148;) filed with the Securities and Exchange Commission on May&nbsp;2, 2007 (File
No.&nbsp;333-140660), as amended, no further option grants were made under the 2001 Plan.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Represents 5,000,000 shares of Common Stock reserved for future grant under the Cavium
Networks, Inc. 2007 Equity Incentive Plan (the &#147;2007 EIP&#148;). The 2007 EIP provides that
an additional number of shares will automatically be added annually to the shares
authorized for issuance under the 2007 EIP on the first day of the Registrant&#146;s fiscal
year, from 2008 until 2017. The number of shares added each year will be equal to the
lesser of: (i)&nbsp;five percent (5.0%) of the aggregate number of shares of the Common
Stock outstanding on December&nbsp;31<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> of the preceding calendar year, (ii)
5,000,000 shares of Common Stock or (iii)&nbsp;a number determined each year by the
Registrant&#146;s board of directors that is less than (i)&nbsp;or (ii).</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(4)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the amount of the registration fee
pursuant to Rule 457(h) of the Securities Act. The proposed maximum aggregate offering
price per share and proposed maximum aggregate offering price are calculated using a
weighted average exercise price of approximately $8.43 per share for such shares issued
and outstanding under the 2001 Plan.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(5)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the amount of the registration fee
pursuant to Rule 457(h) of the Securities Act. The proposed maximum aggregate offering
price per share and proposed maximum aggregate offering price are calculated using the
average of the high and low prices of Registrant&#146;s Common Stock as reported on the
Nasdaq Global Market on May&nbsp;15, 2007.</TD>
</TR>

</TABLE>



<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>









<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
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	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">PART I</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">PART II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">ITEM 4. DESCRIPTION OF SECURITIES</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">ITEM 8. EXHIBITS</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">ITEM 9. UNDERTAKINGS</A></TD></TR>
<TR><TD colspan="9"><A HREF="#009">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#010">INDEX TO EXHIBITS</A></TD></TR>
<TR><TD colspan="9"><A HREF="f30459exv5w1.htm">EXHIBIT 5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="f30459exv23w1.htm">EXHIBIT 23.1</A></TD></TR>
</TABLE>
</CENTER>
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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>




<!-- link1 "PART I" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART I</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The information specified in Item&nbsp;1 and Item&nbsp;2 of Part&nbsp;I of this Registration Statement is
omitted from this filing in accordance with the provisions of Rule&nbsp;428 under the Securities Act of
1933, as amended (the &#147;Securities Act&#148;) and the introductory note to Part&nbsp;I of the Registration
Statement. The documents containing the information specified in Part&nbsp;I will be delivered to the
participants in the equity benefit plans covered by this Registration Statement as required by Rule
428(b)(1).
</DIV>
<!-- link1 "PART II" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>

<!-- link2 "ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by Cavium Networks, Inc. (the &#147;Registrant&#148;) with the Securities
and Exchange Commission (the &#147;Commission&#148;) are incorporated by reference into this Registration
Statement:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(a)&nbsp;</B>The Registrant&#146;s prospectus filed on May&nbsp;2, 2007 pursuant to Rule 424(b) under the
Securities Act, relating to the registration statement on Form S-1 (File No.&nbsp;333-140660), as
amended, that contains audited financial statements as of the latest fiscal years for which such
statements have been filed.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(b)&nbsp;</B>The description of the Registrant&#146;s Common Stock which is contained in the registration
statement on Form 8-A filed on April&nbsp;27, 2007 (File No.&nbsp;001-33435), under the Securities Exchange
Act of 1934, as amended (the &#147;Exchange Act&#148;), including any amendment or report filed for the
purpose of updating such description.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(c)&nbsp;</B>All other reports and other documents subsequently filed by the Company pursuant to
Sections&nbsp;13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing of a post-effective
amendment which indicates that all securities offered have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be
a part of this registration statement from the date of the filing of such reports and documents.
</DIV>
<!-- link2 "ITEM 4. DESCRIPTION OF SECURITIES" -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 4. DESCRIPTION OF SECURITIES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The validity of the issuance of the common stock offered pursuant to this Registration
Statement and certain other legal matters are being passed upon for the Registrant by Cooley
Godward Kronish LLP, Palo Alto, California.
</DIV>
<!-- link2 "ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant is incorporated under the laws of the State of Delaware. Section&nbsp;145 of the
Delaware General Corporation Law provides that a Delaware corporation may indemnify any persons who
are, or are threatened to be made, parties to any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative (other than an action by or in
the right of such corporation), by reason of the fact that such person was an officer, director,
employee or agent of such corporation, or is or was serving at the request of such person as an
officer, director, employee or agent of another corporation or enterprise. The indemnity may
include expenses (including attorneys&#146; fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred by such person in connection with such action, suit or proceeding,
provided that such person acted in good faith and in a manner he or she reasonably believed to be
in or not opposed to the corporation&#146;s best interests and, with respect to any criminal action or
proceeding, had no reasonable cause to believe that his or her conduct was illegal. A Delaware
corporation may indemnify any persons who are, or are threatened to be made, a party to any
threatened, pending or completed action or suit by or in the right of the corporation by reason of
the fact that such person was a director, officer, employee or agent of such corporation, or is or
was serving at the request of such corporation as a director, officer, employee or agent of another
corporation or enterprise. The indemnity may
include expenses (including attorneys&#146; fees) actually and reasonably incurred by such person
in connection with the defense or
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">settlement of such action or suit provided such person acted in
good faith and in a manner he or she reasonably believed to be in or not opposed to the
corporation&#146;s best interests except that no indemnification is permitted without judicial approval
if the officer or director is adjudged to be liable to the corporation. Where an officer or
director is successful on the merits or otherwise in the defense of any action referred to above,
the corporation must indemnify him or her against the expenses which such officer or director has
actually and reasonably incurred. The Registrant&#146;s amended and restated certificate of
incorporation and amended and restated bylaws provide for the indemnification of the Registrant&#146;s
directors and officers to the fullest extent permitted under the Delaware General Corporation Law.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;102(b)(7) of the Delaware General Corporation Law permits a corporation to provide in
its certificate of incorporation that a director of the corporation shall not be personally liable
to the corporation or its stockholders for monetary damages for breach of fiduciary duties as a
director, except for liability for any:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>transaction from which the director derives an improper personal benefit;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>unlawful payment of dividends or redemption of shares; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>breach of a director&#146;s duty of loyalty to the corporation or its stockholders.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s amended and restated certificate of incorporation and amended and restated
bylaws include such a provision. Expenses incurred by any officer or director in defending any such
action, suit or proceeding in advance of its final disposition shall be paid by the Registrant upon
delivery to it of an undertaking, by or on behalf of such director or officer, to repay all amounts
so advanced if it shall ultimately be determined that such director or officer is not entitled to
be indemnified by the Registrant.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;174 of the Delaware General Corporation Law provides, among other things, that a
director who willfully or negligently approves of an unlawful payment of dividends or an unlawful
stock purchase or redemption may be held liable for such actions. A director who was either absent
when the unlawful actions were approved, or dissented at the time, may avoid liability by causing
his or her dissent to such actions to be entered in the books containing minutes of the meetings of
the board of directors at the time such action occurred or immediately after such absent director
receives notice of the unlawful acts.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As permitted by the Delaware General Corporation Law, the Registrant has entered into
indemnity agreements with each of its directors and executive officers that require the Registrant
to indemnify such persons against expenses (including attorneys&#146; fees), witness fees, judgments,
fines, settlements and other amounts incurred (including expenses of a derivative action) in
connection with any action, suit or proceeding or alternative dispute resolution mechanism, inquiry
hearing or investigation, whether threatened, pending or completed, to which any such person may be
made a party by reason of the fact that such person is or was a director, an officer, an employee
or other agent of the Registrant or any of its affiliated enterprises, provided that such person&#146;s
conduct did not constitute a breach of his or her duty of loyalty to the Registrant or its
stockholders, and was not an act or omission not in good faith or which involved intentional
misconduct or a knowing violation of laws. The indemnity agreements also set forth certain
procedures that will apply in the event of a claim for indemnification thereunder. Currently, there
is no pending litigation or proceeding involving any of the Registrant&#146;s directors or executive
officers for which indemnification is required or permitted, and the Registrant is not aware of any
threatened litigation or proceeding that may result in a claim for indemnification.
</DIV>
<!-- link2 "ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED" -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "ITEM 8. EXHIBITS" -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 8. EXHIBITS</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 0px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1<SUP style="font-size: 85%; vertical-align: text-top">(1)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of the Registrant&#146;s Common Stock Certificate</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2<SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Certificate of Incorporation, currently in effect</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 0px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2<SUP style="font-size: 85%; vertical-align: text-top">(3)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws, currently in effect</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Cooley Godward Kronish <FONT style="font-variant: SMALL-CAPS">LLP</FONT></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Cooley Godward Kronish <FONT style="font-variant: SMALL-CAPS">llp</FONT>. Reference is made to Exhibit&nbsp;5.1.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney. Reference is made to the signature page of this Form&nbsp;S-8.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1<SUP style="font-size: 85%; vertical-align: text-top">(4)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2001 Stock Incentive Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.2<SUP style="font-size: 85%; vertical-align: text-top">(5)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2007 Equity Incentive Plan</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;4.2 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;3.3 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;3.5 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(4)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;10.2 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(5)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;10.3 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

</TABLE>


<!-- link2 "ITEM 9. UNDERTAKINGS" -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>ITEM 9. UNDERTAKINGS</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>1. </B>The undersigned Registrant hereby undertakes:

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(a)&nbsp;</B>To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(i) </B>To include any prospectus required by section 10(a)(3) of the Securities Act of 1933;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(ii) </B>To reflect in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of securities offered would not exceed that which was registered) and
any deviation from the low or high end of the estimated maximum offering range may be reflected in
the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20% change in the maximum aggregate offering
price set forth in the &#147;Calculation of Registration Fee&#148; table in the effective registration
statement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(iii) </B>To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such information in
the registration statement;
</DIV>
<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>Provided, however, </I>that paragraphs (a)(i) and (a)(ii) of the section do not apply if the
information required to be included in a post-effective amendment by those paragraphs is contained
in reports filed with or furnished to the Commission by the Registrant pursuant to section 13 or
section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the
registration statement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(b)&nbsp;</B>That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered herein, and the offering of such securities at that time shall be deemed to be
the initial <I>bona fide </I>offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(c)&nbsp;</B>To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(d)&nbsp;</B>That, for the purpose of determining liability of the Registrant under the Securities Act
of 1933 to any purchaser in the initial distribution of the securities, the undersigned Registrant
undertakes that in a primary offering of securities of the undersigned registrant pursuant to this
Registration Statement, regardless of the underwriting method used to sell the securities to the
purchaser, if the securities are offered or sold to such purchaser by means of any of the following
communications, the undersigned Registrant will be a seller to the purchaser and will be considered
to offer or sell such securities to such purchaser:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(i) </B>Any preliminary prospectus or prospectus of the undersigned Registrant relating to the
offering required to be filed pursuant to Rule&nbsp;424;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(ii) </B>Any free writing prospectus relating to the offering prepared by or on behalf of the
undersigned Registrant or used or referred to by the undersigned Registrant;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(iii) </B>The portion of any other free writing prospectus relating to the offering containing
material information about the undersigned Registrant or its securities provided by or on behalf of
the undersigned Registrant; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(iv) </B>Any other communication that is an offer in the offering made by the undersigned
Registrant to the purchaser.
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><B>2.</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The undersigned Registrant hereby undertakes that, for purposes of determining any liability
under the Securities Act, each filing of the registrant&#146;s annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each
filing of an employee benefit plan&#146;s annual report pursuant to section 15(d) of the Exchange
Act) that is incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered herein, and the offering of such
securities at that time shall be deemed to be the initial <I>bona fide </I>offering thereof.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><B>3.</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed
in the Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the Registrant will,
unless in the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such indemnification by it
is against public policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.</TD>
</TR>

</TABLE>
</DIV>
<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">



</TABLE>
</DIV>
<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="009"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Mountain View, State of California, on May&nbsp;18, 2007.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><FONT style="font-variant: SMALL-CAPS"><B>Cavium Networks, Inc.</B></FONT><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Syed Ali
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Syed Ali&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>POWER OF ATTORNEY</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<FONT style="font-variant: SMALL-CAPS"><B>Know All Persons By These Presents</B>,</FONT> that each person whose signature appears below
constitutes and appoints <FONT style="font-variant: SMALL-CAPS"><B>Syed Ali</B></FONT> and <FONT style="font-variant: SMALL-CAPS"><B>Arthur Chadwick</B></FONT>, and each or any one of
them, his true and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any
and all amendments (including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of
them, full power and authority to do and perform each and every act and thing requisite and
necessary to be done in connection therewith, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or
any of them, or their or his substitutes or substitute, may lawfully do or cause to be done by
virtue hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the dates indicated.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD>&nbsp;</TD>
</TR>

<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Syed Ali
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Syed Ali
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">President, Chief
Operating Officer
and Director
(<I>Principal
Executive Officer)</I>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Arthur Chadwick
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Arthur Chadwick
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Chief Financial
Officer and Vice
President of
Finance and
Administration
<I>(Principal
Financial Officer)</I>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Kris Chellam
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Kris Chellam
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John Jarve
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John Jarve
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Anthony Pantuso
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Anthony Pantuso
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ C.N. Reddy
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
C.N. Reddy
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Anthony Thornley
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Anthony Thornley
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;18, 2007</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "INDEX TO EXHIBITS" -->
<DIV align="left"><A NAME="010"></A></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INDEX TO EXHIBITS</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 0px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1<SUP style="font-size: 85%; vertical-align: text-top">(1)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of the Registrant&#146;s Common Stock Certificate</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2<SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Certificate of Incorporation, currently in effect</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2<SUP style="font-size: 85%; vertical-align: text-top">(3)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws, currently in effect</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Cooley Godward Kronish <FONT style="font-variant: SMALL-CAPS">LLP</FONT></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Cooley Godward Kronish <FONT style="font-variant: SMALL-CAPS">llp</FONT>. Reference is made to Exhibit&nbsp;5.1.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney. Reference is made to the signature page of this Form&nbsp;S-8.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1<SUP style="font-size: 85%; vertical-align: text-top">(4)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2001 Stock Incentive Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.2<SUP style="font-size: 85%; vertical-align: text-top">(5)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2007 Equity Incentive Plan</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;4.2 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;3.3 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;3.5 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(4)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;10.2 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(5)</TD>
    <TD>&nbsp;</TD>
    <TD>Previously filed as Exhibit&nbsp;10.3 to the Company&#146;s Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February&nbsp;13, 2007, and
incorporated by reference herein.</TD>
</TR>

</TABLE>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

</BODY>
</HTML>
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sv8
Table of Contents
As filed with the Securities and Exchange Commission on May 18, 2007 Registration
No. 333-
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
CAVIUM NETWORKS, INC.
(Exact name of registrant as specified in its charter)
Delaware
77-0558625
(State of Incorporation)
(I.R.S. Employer Identification No.)
Cavium Networks, Inc.
805 East Middlefield Road
Mountain View, California 94043
(650) 623-7000
(Address of principal executive offices)
2001 Stock Incentive Plan
2007 Equity Incentive Plan
(Full title of the plans)
Syed Ali
President and Chief Executive Officer
Mountain View, California 94043
(650) 623-7000
(Name, address, including zip code, and telephone number, including area code, of agent for service)
Copies to:
Vincent P. Pangrazio, Esq.
Cooley Godward Kronish LLP
Five Palo Alto Square
3000 El Camino Real
Palo Alto, CA 94306-2155
(650) 843-5000
CALCULATION OF REGISTRATION FEE
Proposed Maximum
Proposed Maximum
Title of Securities
Offering
Aggregate
Amount of
to be Registered
Amount to be Registered
(1)
Price per Share
Offering Price
Registration Fee
Common Stock, par value
$0.001 per share
4,382,534 shares
(2)
$
8.39
(4)
$36,769,460.26
$
1,128.82
Common Stock, par value
$0.001 per share
5,000,000 shares
(3)
$
17.32
(5)
$86,600,000.00
$
2,658.62
Total
9,382,534
N/A
$123,369,460.26
$
3,787.44
(1)
Pursuant to Rule 416(a), this Registration Statement shall also cover any additional
shares of Registrant's Common Stock that become issuable under the plan by reason of
any stock dividend, stock split, recapitalization or other similar transaction effected
without receipt of consideration that increases the number of outstanding shares of
Registrant's Common Stock.
(2)
Represents 4,382,534 shares of Common Stock reserved for future issuance upon the
exercise of options granted under the Cavium Networks, Inc. 2001 Stock Incentive Plan
(the "2001 Plan"). Upon the effective date of the initial public offering of the
Registrant's Common Stock, as set forth in the Registrant's Prospectus (the
"Prospectus") filed with the Securities and Exchange Commission on May 2, 2007 (File
No. 333-140660), as amended, no further option grants were made under the 2001 Plan.
(3)
Represents 5,000,000 shares of Common Stock reserved for future grant under the Cavium
Networks, Inc. 2007 Equity Incentive Plan (the "2007 EIP"). The 2007 EIP provides that
an additional number of shares will automatically be added annually to the shares
authorized for issuance under the 2007 EIP on the first day of the Registrant's fiscal
year, from 2008 until 2017. The number of shares added each year will be equal to the
lesser of: (i) five percent (5.0%) of the aggregate number of shares of the Common
Stock outstanding on December 31
st
of the preceding calendar year, (ii)
5,000,000 shares of Common Stock or (iii) a number determined each year by the
Registrant's board of directors that is less than (i) or (ii).
(4)
Estimated solely for the purpose of calculating the amount of the registration fee
pursuant to Rule 457(h) of the Securities Act. The proposed maximum aggregate offering
price per share and proposed maximum aggregate offering price are calculated using a
weighted average exercise price of approximately $8.43 per share for such shares issued
and outstanding under the 2001 Plan.
(5)
Estimated solely for the purpose of calculating the amount of the registration fee
pursuant to Rule 457(h) of the Securities Act. The proposed maximum aggregate offering
price per share and proposed maximum aggregate offering price are calculated using the
average of the high and low prices of Registrant's Common Stock as reported on the
Nasdaq Global Market on May 15, 2007.
TABLE OF CONTENTS
PART I
PART II
ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
ITEM 4. DESCRIPTION OF SECURITIES
ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL
ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS
ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED
ITEM 8. EXHIBITS
ITEM 9. UNDERTAKINGS
SIGNATURES
INDEX TO EXHIBITS
EXHIBIT 5.1
EXHIBIT 23.1
Table of Contents
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The information specified in Item 1 and Item 2 of Part I of this Registration Statement is
omitted from this filing in accordance with the provisions of Rule 428 under the Securities Act of
1933, as amended (the "Securities Act") and the introductory note to Part I of the Registration
Statement. The documents containing the information specified in Part I will be delivered to the
participants in the equity benefit plans covered by this Registration Statement as required by Rule
428(b)(1).
PART II
ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
The following documents filed by Cavium Networks, Inc. (the "Registrant") with the Securities
and Exchange Commission (the "Commission") are incorporated by reference into this Registration
Statement:
(a)
The Registrant's prospectus filed on May 2, 2007 pursuant to Rule 424(b) under the
Securities Act, relating to the registration statement on Form S-1 (File No. 333-140660), as
amended, that contains audited financial statements as of the latest fiscal years for which such
statements have been filed.
(b)
The description of the Registrant's Common Stock which is contained in the registration
statement on Form 8-A filed on April 27, 2007 (File No. 001-33435), under the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), including any amendment or report filed for the
purpose of updating such description.
(c)
All other reports and other documents subsequently filed by the Company pursuant to
Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing of a post-effective
amendment which indicates that all securities offered have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be
a part of this registration statement from the date of the filing of such reports and documents.
ITEM 4. DESCRIPTION OF SECURITIES
Not applicable.
ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL
The validity of the issuance of the common stock offered pursuant to this Registration
Statement and certain other legal matters are being passed upon for the Registrant by Cooley
Godward Kronish LLP, Palo Alto, California.
ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS
The Registrant is incorporated under the laws of the State of Delaware. Section 145 of the
Delaware General Corporation Law provides that a Delaware corporation may indemnify any persons who
are, or are threatened to be made, parties to any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative (other than an action by or in
the right of such corporation), by reason of the fact that such person was an officer, director,
employee or agent of such corporation, or is or was serving at the request of such person as an
officer, director, employee or agent of another corporation or enterprise. The indemnity may
include expenses (including attorneys' fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred by such person in connection with such action, suit or proceeding,
provided that such person acted in good faith and in a manner he or she reasonably believed to be
in or not opposed to the corporation's best interests and, with respect to any criminal action or
proceeding, had no reasonable cause to believe that his or her conduct was illegal. A Delaware
corporation may indemnify any persons who are, or are threatened to be made, a party to any
threatened, pending or completed action or suit by or in the right of the corporation by reason of
the fact that such person was a director, officer, employee or agent of such corporation, or is or
was serving at the request of such corporation as a director, officer, employee or agent of another
corporation or enterprise. The indemnity may
include expenses (including attorneys' fees) actually and reasonably incurred by such person
in connection with the defense or
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settlement of such action or suit provided such person acted in
good faith and in a manner he or she reasonably believed to be in or not opposed to the
corporation's best interests except that no indemnification is permitted without judicial approval
if the officer or director is adjudged to be liable to the corporation. Where an officer or
director is successful on the merits or otherwise in the defense of any action referred to above,
the corporation must indemnify him or her against the expenses which such officer or director has
actually and reasonably incurred. The Registrant's amended and restated certificate of
incorporation and amended and restated bylaws provide for the indemnification of the Registrant's
directors and officers to the fullest extent permitted under the Delaware General Corporation Law.
Section 102(b)(7) of the Delaware General Corporation Law permits a corporation to provide in
its certificate of incorporation that a director of the corporation shall not be personally liable
to the corporation or its stockholders for monetary damages for breach of fiduciary duties as a
director, except for liability for any:
•
transaction from which the director derives an improper personal benefit;
•
act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;
•
unlawful payment of dividends or redemption of shares; or
•
breach of a director's duty of loyalty to the corporation or its stockholders.
The Registrant's amended and restated certificate of incorporation and amended and restated
bylaws include such a provision. Expenses incurred by any officer or director in defending any such
action, suit or proceeding in advance of its final disposition shall be paid by the Registrant upon
delivery to it of an undertaking, by or on behalf of such director or officer, to repay all amounts
so advanced if it shall ultimately be determined that such director or officer is not entitled to
be indemnified by the Registrant.
Section 174 of the Delaware General Corporation Law provides, among other things, that a
director who willfully or negligently approves of an unlawful payment of dividends or an unlawful
stock purchase or redemption may be held liable for such actions. A director who was either absent
when the unlawful actions were approved, or dissented at the time, may avoid liability by causing
his or her dissent to such actions to be entered in the books containing minutes of the meetings of
the board of directors at the time such action occurred or immediately after such absent director
receives notice of the unlawful acts.
As permitted by the Delaware General Corporation Law, the Registrant has entered into
indemnity agreements with each of its directors and executive officers that require the Registrant
to indemnify such persons against expenses (including attorneys' fees), witness fees, judgments,
fines, settlements and other amounts incurred (including expenses of a derivative action) in
connection with any action, suit or proceeding or alternative dispute resolution mechanism, inquiry
hearing or investigation, whether threatened, pending or completed, to which any such person may be
made a party by reason of the fact that such person is or was a director, an officer, an employee
or other agent of the Registrant or any of its affiliated enterprises, provided that such person's
conduct did not constitute a breach of his or her duty of loyalty to the Registrant or its
stockholders, and was not an act or omission not in good faith or which involved intentional
misconduct or a knowing violation of laws. The indemnity agreements also set forth certain
procedures that will apply in the event of a claim for indemnification thereunder. Currently, there
is no pending litigation or proceeding involving any of the Registrant's directors or executive
officers for which indemnification is required or permitted, and the Registrant is not aware of any
threatened litigation or proceeding that may result in a claim for indemnification.
ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED
Not applicable.
ITEM 8. EXHIBITS
Exhibit
Number
4.1
(1)
Form of the Registrant's Common Stock Certificate
4.2
(2)
Amended and Restated Certificate of Incorporation, currently in effect
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Exhibit
Number
4.2
(3)
Amended and Restated Bylaws, currently in effect
5.1
Opinion of Cooley Godward Kronish
LLP
23.1
Consent of Independent Registered Public Accounting Firm
23.2
Consent of Cooley Godward Kronish
llp
. Reference is made to Exhibit 5.1.
24.1
Power of Attorney. Reference is made to the signature page of this Form S-8.
99.1
(4)
2001 Stock Incentive Plan
99.2
(5)
2007 Equity Incentive Plan
(1)
Previously filed as Exhibit 4.2 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(2)
Previously filed as Exhibit 3.3 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(3)
Previously filed as Exhibit 3.5 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(4)
Previously filed as Exhibit 10.2 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(5)
Previously filed as Exhibit 10.3 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
ITEM 9. UNDERTAKINGS
1.
The undersigned Registrant hereby undertakes:
(a)
To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
(i)
To include any prospectus required by section 10(a)(3) of the Securities Act of 1933;
(ii)
To reflect in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of securities offered would not exceed that which was registered) and
any deviation from the low or high end of the estimated maximum offering range may be reflected in
the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20% change in the maximum aggregate offering
price set forth in the "Calculation of Registration Fee" table in the effective registration
statement.
(iii)
To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such information in
the registration statement;
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Provided, however,
that paragraphs (a)(i) and (a)(ii) of the section do not apply if the
information required to be included in a post-effective amendment by those paragraphs is contained
in reports filed with or furnished to the Commission by the Registrant pursuant to section 13 or
section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the
registration statement.
(b)
That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered herein, and the offering of such securities at that time shall be deemed to be
the initial
bona fide
offering thereof.
(c)
To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
(d)
That, for the purpose of determining liability of the Registrant under the Securities Act
of 1933 to any purchaser in the initial distribution of the securities, the undersigned Registrant
undertakes that in a primary offering of securities of the undersigned registrant pursuant to this
Registration Statement, regardless of the underwriting method used to sell the securities to the
purchaser, if the securities are offered or sold to such purchaser by means of any of the following
communications, the undersigned Registrant will be a seller to the purchaser and will be considered
to offer or sell such securities to such purchaser:
(i)
Any preliminary prospectus or prospectus of the undersigned Registrant relating to the
offering required to be filed pursuant to Rule 424;
(ii)
Any free writing prospectus relating to the offering prepared by or on behalf of the
undersigned Registrant or used or referred to by the undersigned Registrant;
(iii)
The portion of any other free writing prospectus relating to the offering containing
material information about the undersigned Registrant or its securities provided by or on behalf of
the undersigned Registrant; and
(iv)
Any other communication that is an offer in the offering made by the undersigned
Registrant to the purchaser.
2.
The undersigned Registrant hereby undertakes that, for purposes of determining any liability
under the Securities Act, each filing of the registrant's annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each
filing of an employee benefit plan's annual report pursuant to section 15(d) of the Exchange
Act) that is incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered herein, and the offering of such
securities at that time shall be deemed to be the initial
bona fide
offering thereof.
3.
Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed
in the Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the Registrant will,
unless in the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such indemnification by it
is against public policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
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SIGNATURES
Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Mountain View, State of California, on May 18, 2007.
Cavium Networks, Inc.
By:
/s/ Syed Ali
Syed Ali
President and Chief Executive Officer
POWER OF ATTORNEY
Know All Persons By These Presents
,
that each person whose signature appears below
constitutes and appoints
Syed Ali
and
Arthur Chadwick
, and each or any one of
them, his true and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any
and all amendments (including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of
them, full power and authority to do and perform each and every act and thing requisite and
necessary to be done in connection therewith, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or
any of them, or their or his substitutes or substitute, may lawfully do or cause to be done by
virtue hereof.
Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/ Syed Ali
Syed Ali
President, Chief
Operating Officer
and Director
(
Principal
Executive Officer)
May 18, 2007
/s/ Arthur Chadwick
Arthur Chadwick
Chief Financial
Officer and Vice
President of
Finance and
Administration
(Principal
Financial Officer)
May 18, 2007
/s/ Kris Chellam
Kris Chellam
Director
May 18, 2007
/s/ John Jarve
John Jarve
Director
May 18, 2007
/s/ Anthony Pantuso
Anthony Pantuso
Director
May 18, 2007
/s/ C.N. Reddy
C.N. Reddy
Director
May 18, 2007
/s/ Anthony Thornley
Anthony Thornley
Director
May 18, 2007
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INDEX TO EXHIBITS
Exhibit
Number
4.1
(1)
Form of the Registrant's Common Stock Certificate
4.2
(2)
Amended and Restated Certificate of Incorporation, currently in effect
4.2
(3)
Amended and Restated Bylaws, currently in effect
5.1
Opinion of Cooley Godward Kronish
LLP
23.1
Consent of Independent Registered Public Accounting Firm
23.2
Consent of Cooley Godward Kronish
llp
. Reference is made to Exhibit 5.1.
24.1
Power of Attorney. Reference is made to the signature page of this Form S-8.
99.1
(4)
2001 Stock Incentive Plan
99.2
(5)
2007 Equity Incentive Plan
(1)
Previously filed as Exhibit 4.2 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(2)
Previously filed as Exhibit 3.3 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(3)
Previously filed as Exhibit 3.5 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(4)
Previously filed as Exhibit 10.2 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.
(5)
Previously filed as Exhibit 10.3 to the Company's Registration Statement on Form S-1, as
amended (333-140660), originally filed with the Commission on February 13, 2007, and
incorporated by reference herein.