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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 March&nbsp;14, 2006
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 12pt">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 align="right" style="font-size: 10pt; margin-top: 0pt">&nbsp;</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>UNITED STATES SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, DC 20549</B>
</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 15%; border-top: 1px solid #000000">&nbsp;</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">REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 15%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

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

<DIV align="center" style="font-size: 10pt">(Exact Name of Registrant as Specified in Its Charter)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Delaware</B></DIV>

<DIV align="center" style="font-size: 10pt">(State or Other Jurisdiction of Incorporation or Organization)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>36-2917389</B></DIV>

<DIV align="center" style="font-size: 10pt">(I.R.S. Employer Identification No.)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Eagle Test Systems, Inc.<BR>
2200 Millbrook Drive<BR>
Buffalo Grove, Illinois 60089</B><BR>
(Address of Principal Executive Offices) (Zip Code)</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 30%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>2003 Stock Option and Grant Plan<BR>
2006 Stock Option and Incentive Plan</B><BR>
(Full Title of the Plan)</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 30%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Leonard Foxman<BR>
Chief Executive Officer and President<BR>
Eagle Test Systems, Inc.<BR>
2200 Millbrook Drive<BR>
Buffalo Grove, Illinois 60089</B><BR>
(Name and Address of Agent for Service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>(847)&nbsp;367-8282</B><BR>
Telephone Number, Including Area Code, of Agent For Service.</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 30%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">Copies to:</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Michael S. Turner, Esq.<BR>
Goodwin Procter LLP<BR>
Exchange Place<BR>
Boston, Massachusetts 02109<BR>
(617)&nbsp;570-1000</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><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="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="8%">&nbsp;</TD>

    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">

<TD nowrap align="left" colspan="16" 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 nowrap align="center">Amount</TD>
    <TD style="border-right: 1px solid #000000">&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="2">Proposed Maximum</TD>

    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&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 Each Class of Securities</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">To Be</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">Proposed Maximum Offering</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">Aggregate Offering</TD>

    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">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" style="border-bottom: 0px solid #000000">To Be Registered</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 0px solid #000000">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" style="border-bottom: 0px solid #000000">Price Per Share</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>

<TD nowrap align="center" style="border-bottom: 0px solid #000000" colspan="2">Price</TD>

    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 0px solid #000000">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 style="border-top: 1px solid #000000"><DIV style="margin-left:15px; text-indent:-15px"><B>2003 Stock Option and Grant Plan</B></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 align="center" valign="bottom" style="border-top: 1px solid #000000">182,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;6.00</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;1,092,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 style="border-top: 1px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, par value $.01 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 align="center" valign="bottom" style="border-top: 1px solid #000000">37,500</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="center" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;6.60</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;247,500</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 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 align="center" valign="bottom" style="border-top: 1px solid #000000">150,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;7.00</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;1,050,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 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 align="center" valign="bottom" style="border-top: 1px solid #000000">80,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;8.00</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;640,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 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 align="center" valign="bottom" style="border-top: 1px solid #000000">325,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$10.00</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;3,250,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 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 align="center" valign="bottom" style="border-top: 1px solid #000000">50,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$11.40</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;570,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 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 align="center" valign="bottom" style="border-top: 1px solid #000000">140,000</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="center" valign="bottom" style="border-top: 1px solid #000000">$13.00</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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;1,820,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px"><B>2006 Stock Option and Incentive Plan</B></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 align="center" valign="top" style="border-top: 1px solid #000000">2,600,000</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="center" valign="top" style="border-top: 1px solid #000000">$15.50</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" valign="top" style="border-top: 1px solid #000000">$40,300,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000"><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 align="center" valign="bottom" 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 style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Stock, par value $.01 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 align="center" valign="bottom" 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="center" valign="bottom" 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="center" valign="bottom" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD width="1%" 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="center" valign="bottom" 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 style="border-top: 1px solid #000000"><DIV style="margin-left:30px; text-indent:-15px"><B>Total</B></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 align="center" valign="bottom" style="border-top: 1px solid #000000">3,564,500</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="center" valign="bottom" 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" valign="bottom" style="border-top: 1px solid #000000">$&nbsp;&nbsp;&nbsp;48,969,500</TD>
    <TD width="1%" 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="center" valign="bottom" style="border-top: 1px solid #000000">$5,240<SUP style="font-size: 85%; vertical-align: text-top">(4)</SUP></TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">

<TD nowrap align="left" colspan="17" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</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">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>In addition, pursuant to Rule&nbsp;416(a), this Registration Statement also covers such
indeterminate number of additional shares of Common Stock as is necessary to eliminate any
dilutive effect of any future stock split, stock dividend or similar transaction.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 3pt">
<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">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Such shares are issuable upon exercise of outstanding options with fixed exercise prices.
Estimated solely for purposes of calculating the filing fee pursuant to Rule&nbsp;457(h), the
aggregate offering price and the fee have been computed upon the basis of the price at which
the options may be exercised.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 3pt">
<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">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>An assumed price of $15.50 per share, which on March&nbsp;8, 2006 was determined to be the initial
public offering price of the Registrant&#146;s Common Stock is set forth solely for purposes of
calculating the filing fee pursuant to Rule 457(h) and has been used only for those shares
without a fixed exercise price.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 3pt">
<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">(4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Registration Statement No.&nbsp;333-117274, previously filed by Eagle Test Systems, Inc. on July
9, 2004, as amended, was withdrawn on June&nbsp;23, 2005. In accordance with Rule&nbsp;457(p), the
currently due filing fee of $5,240 is being offset by $5,240 of the aggregate registration fee
of $21,128 associated with the withdrawn registration statement.</TD>
</TR>

</TABLE>
</DIV>

<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">&nbsp;
</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>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<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></TD><TD colspan="8"><A HREF="#001">Item&nbsp;1.Plan Information*</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;2.Registrant Information and Employee Plan Annual Information*</A></TD></TR>
<TR><TD colspan="9"><A HREF="#003"> PART II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;3. Incorporation of Documents by Reference</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005"> Item&nbsp;4. Description of Securities</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;5. Interests of Named Experts and Counsel</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;6. Indemnification of Directors and Officers</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">Item&nbsp;7. Exemption From Registration Claimed</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#009">Item&nbsp;8. Exhibits</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#010">Item&nbsp;9. Undertakings</A></TD></TR>
<TR><TD colspan="9"><A HREF="#011"> INDEX TO EXHIBITS</A></TD></TR>
<TR><TD colspan="9"><A HREF="c03303exv5w1.htm">Opinion of Goodwin Procter LLP</A></TD></TR>
<TR><TD colspan="9"><A HREF="c03303exv23w2.htm">Consent of Independent Registered Public Accounting Firm</A></TD></TR>
</TABLE>
</CENTER>
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<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: 18pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>

<!-- link2 "Item&nbsp;1.Plan Information*" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;1. <U>Plan Information</U>.*
</DIV>

<!-- link2 "Item&nbsp;2.Registrant Information and Employee Plan Annual Information*" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;2. <U>Registrant Information and Employee Plan Annual Information</U>.*
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*The documents containing the information specified in this Part&nbsp;I will be sent or given to
employees, directors or others as specified by Rule&nbsp;428(b)(1). In accordance with the rules and
regulations of the Securities and Exchange Commission (the &#147;<U>Commission</U>&#148;) and the
Introductory Note to Part&nbsp;I of Form S-8, such documents are not being filed with the Commission
either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant
to Rule&nbsp;424.
</DIV>
<!-- link1 " PART II" -->
<DIV align="left"><A NAME="003"></A></DIV>

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


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</DIV>

<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;3. <U>Incorporation of Documents by Reference</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed with the Commission are incorporated by reference in this
Registration Statement:
</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">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Registrant&#146;s Prospectus dated March&nbsp;8, 2006, as filed on March&nbsp;9, 2006 pursuant to Rule
424(b) of the Securities Act of 1933, as amended (the &#147;<U>Securities Act</U>&#148;); and</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)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The section entitled &#147;Description of Registrant&#146;s Securities to be Registered&#148; contained in
the Registrant&#146;s Registration Statement on Form 8-A, filed pursuant to Section 12(g) of the
Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;) on March&nbsp;3, 2006.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed with the Commission by the Registrant pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, on or after the date of this Registration Statement
and prior to the filing of a post-effective amendment to this Registration Statement which
indicates that all securities offered herein have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference in this Registration
Statement and to be a part thereof from the date of filing of such documents.
</DIV>
<!-- link2 " Item&nbsp;4. Description of Securities" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;4. <U> Description of Securities</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel" -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;5. <U>Interests of Named Experts and Counsel</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers" -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;6. <U>Indemnification of Directors and Officers</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Delaware General Corporation Law and the Registrant&#146;s bylaws provide for indemnification
of the Registrant&#146;s directors and officers for liabilities and expenses that they may incur in such

capacities. In general, the Registrant will indemnify its directors and officers with respect to
actions taken
</DIV>

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

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">by them in good faith in a manner reasonably believed to be in, or not opposed to,
the Registrant&#146;s best interests and, with respect to any criminal action or proceeding, actions
that the indemnitee had no reasonable cause to believe were unlawful. Reference is made to the
Registrant&#146;s amended and restated bylaws filed as Exhibit&nbsp;3.3 to the Registration Statement on Form
S-1 (File No.&nbsp;333-130521).
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant is party to an underwriting agreement which provides that the underwriters are
obligated, under certain circumstances, to indemnify the Registrant&#146;s directors, officers and
controlling persons against certain liabilities, including liabilities under the Securities Act.
Reference is made to the form of Underwriting Agreement filed as Exhibit&nbsp;1.1 to the Registrant&#146;s
Registration Statement on Form S-1 (File No.&nbsp;333-130521).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has entered into agreements with certain of its officers and directors that
also provide for such indemnification and expenses and liability reimbursement. These agreements
require the Registrant to indemnify such persons against liabilities that may arise by reason of
their status or service as officers and directors and to advance their expenses incurred as a
result of any proceeding against them as to which they could be indemnified. In addition, the
Registrant has an existing directors and officers liability insurance policy to insure such persons
against certain liabilities.
</DIV>
<!-- link2 "Item&nbsp;7. Exemption From Registration Claimed" -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;7. <U>Exemption From Registration Claimed</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "Item&nbsp;8. Exhibits" -->
<DIV align="left"><A NAME="009"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;8. <U>Exhibits</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See the Exhibit&nbsp;Index on the page immediately preceding the exhibits for a list of exhibits
filed as part of this Registration Statement on Form S-8, which Exhibit&nbsp;Index is incorporated
herein by reference.
</DIV>
<!-- link2 "Item&nbsp;9. Undertakings" -->
<DIV align="left"><A NAME="010"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;9. <U>Undertakings.</U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;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; margin-left: 10%">(i)&nbsp;To include any prospectus required by Section&nbsp;10(a)(3) of the
Securities Act of 1933;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 10%">(ii)&nbsp;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 20&nbsp;percent change in the maximum aggregate
offering price set forth in the &#147;Calculation of Registration Fee&#148; table in
the effective Registration Statement;
</DIV>

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

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


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 10%">(iii)&nbsp;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>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%"><I>provided</I>, <I>however</I>, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
Registration Statement is on Form S-3, Form S-8 or Form F-3, and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed with or furnished to the Commission by the
Registrant pursuant to Section&nbsp;13 or 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; margin-left: 8%">(2)&nbsp;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 therein, 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; margin-left: 8%">(3)&nbsp;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; margin-left: 6%">(b)&nbsp;The undersigned Registrant hereby undertakes, that, for purposes of determining any
liability under the Securities Act of 1933, 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 of 1934) that is incorporated by reference in the
Registration Statement shall be deemed to be a new registration statement relating to the
securities offered therein, 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; margin-left: 6%">(c)&nbsp;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 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 Act and will be
governed by the final adjudication of such issue.
</DIV>

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

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<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;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, 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 Buffalo Grove, State of
Illinois, on March&nbsp;14, 2006.
</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">Eagle</FONT>
<FONT style="font-variant: SMALL-CAPS"> Test</FONT>
<FONT style="font-variant: SMALL-CAPS"> Systems</FONT>,
<FONT style="font-variant: SMALL-CAPS">  Inc</FONT>.</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/ Leonard A. Foxman
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Leonard A. Foxman&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left"><I>Chief Executive Officer and President</I>&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 AND SIGNATURES</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We, the undersigned officers and directors of Eagle Test Systems, Inc. (the
&#147;<U>Company</U>&#148;), hereby severally constitute and appoint Leonard A. Foxman and Stephen J.
Hawrysz, and each of them singly, our true and lawful attorneys, with full power to them, and to
each of them singly, to sign for us and in our names in the capacities indicated below, any and all
amendments to this Registration Statement, and all other documents in connection therewith to be
filed with the Securities and Exchange Commission, and generally to do all things in our names and
on our behalf in such capacities to enable the Company to comply with the provisions of the
Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities indicated on
March&nbsp;14, 2006:
</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="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="60%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" 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(s)</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR><TD align="left" valign="top">&nbsp;</TD></TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Leonard A. Foxman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Executive Officer, President and Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Leonard A. Foxman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;(Principal
Executive Officer)</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">/s/ Stephen J. Hawrysz
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Financial Officer and Treasurer&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Stephen J. Hawrysz
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(Principal Financial and Accounting Officer)</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">/s/ Theodore D. Foxman
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Operating Officer, Executive Vice President
and Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Theodore D. Foxman</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</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">/s/ Michael C. Child
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Michael C. Child</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</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">/s/ Ross W. Manire
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Ross W. Manire</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</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"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
William H. Gibbs
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">/s/ David B. Mullen
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">David B. Mullen</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">&nbsp;
</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="011"></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="5%">&nbsp;</TD>
    <TD width="90%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Exhibit No.</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Description of Exhibit</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">3.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of Second Amended and Restated Certificate of Incorporation of the
Registrant (filed as Exhibit&nbsp;3.2 to the Registrant&#146;s Registration Statement on
Form&nbsp;S-1 (File No.&nbsp;333-130521) and incorporated herein by reference)</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">3.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of Amended and Restated By-laws of the Registrant (filed as
Exhibit&nbsp;3.3 to the Registrant&#146;s Registration Statement on Form
S-1 (No.&nbsp;333-130521) and incorporated herein by reference)</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">4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Specimen Stock Certificate (filed as Exhibit&nbsp;4.1 to the
Registrant&#146;s Registration Statement on Form&nbsp;S-1 (No.&nbsp;333-130521)
and incorporated herein by reference)</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 Goodwin Procter LLP</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 Goodwin Procter LLP (included in 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">23.2
</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">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included as part of the signature page of
this Registration Statement)</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
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2003 Stock Option and Grant Plan (filed as Exhibit&nbsp;10.1 to the
Registrant&#146;s Registration Statement on Form&nbsp;S-1 (No.&nbsp;333-117274)
and incorporated herein by reference)</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
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2006 Stock Option and Incentive Plan (filed as Exhibit&nbsp;10.2 to
the Registrant&#146;s
Registration Statement on Form&nbsp;S-1 (No.&nbsp;333-130521) and
incorporated herein
by reference)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



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


</BODY>
</HTML>
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sv8
Table of Contents
As
filed with the Securities and Exchange Commission on March 14, 2006
Registration No. 333-
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
EAGLE TEST SYSTEMS, INC.
(Exact Name of Registrant as Specified in Its Charter)
Delaware
(State or Other Jurisdiction of Incorporation or Organization)
36-2917389
(I.R.S. Employer Identification No.)
Eagle Test Systems, Inc.
2200 Millbrook Drive
Buffalo Grove, Illinois 60089
(Address of Principal Executive Offices) (Zip Code)
2003 Stock Option and Grant Plan
2006 Stock Option and Incentive Plan
(Full Title of the Plan)
Leonard Foxman
Chief Executive Officer and President
Eagle Test Systems, Inc.
2200 Millbrook Drive
Buffalo Grove, Illinois 60089
(Name and Address of Agent for Service)
(847) 367-8282
Telephone Number, Including Area Code, of Agent For Service.
Copies to:
Michael S. Turner, Esq.
Goodwin Procter LLP
Exchange Place
Boston, Massachusetts 02109
(617) 570-1000
CALCULATION OF REGISTRATION FEE
Amount
Proposed Maximum
Title of Each Class of Securities
To Be
Proposed Maximum Offering
Aggregate Offering
Amount of
To Be Registered
Registered
(1)
Price Per Share
Price
Registration Fee
2003 Stock Option and Grant Plan
182,000
$  6.00
$   1,092,000
(2)
Common Stock, par value $.01 per share
37,500
$  6.60
$      247,500
(2)
150,000
$  7.00
$   1,050,000
(2)
80,000
$  8.00
$      640,000
(2)
325,000
$10.00
$   3,250,000
(2)
50,000
$11.40
$      570,000
(2)
140,000
$13.00
$   1,820,000
(2)
2006 Stock Option and Incentive Plan
2,600,000
$15.50
$40,300,000
(3)
Common Stock, par value $.01 per share
Total
3,564,500
$   48,969,500
$5,240
(4)
(1)
In addition, pursuant to Rule 416(a), this Registration Statement also covers such
indeterminate number of additional shares of Common Stock as is necessary to eliminate any
dilutive effect of any future stock split, stock dividend or similar transaction.
(2)
Such shares are issuable upon exercise of outstanding options with fixed exercise prices.
Estimated solely for purposes of calculating the filing fee pursuant to Rule 457(h), the
aggregate offering price and the fee have been computed upon the basis of the price at which
the options may be exercised.
(3)
An assumed price of $15.50 per share, which on March 8, 2006 was determined to be the initial
public offering price of the Registrant's Common Stock is set forth solely for purposes of
calculating the filing fee pursuant to Rule 457(h) and has been used only for those shares
without a fixed exercise price.
(4)
Registration Statement No. 333-117274, previously filed by Eagle Test Systems, Inc. on July
9, 2004, as amended, was withdrawn on June 23, 2005. In accordance with Rule 457(p), the
currently due filing fee of $5,240 is being offset by $5,240 of the aggregate registration fee
of $21,128 associated with the withdrawn registration statement.
TABLE OF CONTENTS
PART I
Item 1.Plan Information*
Item 2.Registrant Information and Employee Plan Annual Information*
PART II
Item 3. Incorporation of 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
INDEX TO EXHIBITS
Opinion of Goodwin Procter LLP
Consent of Independent Registered Public Accounting Firm
Table of Contents
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
Item 1.
Plan Information
.*
Item 2.
Registrant Information and Employee Plan Annual Information
.*
*The documents containing the information specified in this Part I will be sent or given to
employees, directors or others as specified by Rule 428(b)(1). In accordance with the rules and
regulations of the Securities and Exchange Commission (the "
Commission
") and the
Introductory Note to Part I of Form S-8, such documents are not being filed with the Commission
either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant
to Rule 424.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.
Incorporation of Documents by Reference
.
The following documents filed with the Commission are incorporated by reference in this
Registration Statement:
(a)
Registrant's Prospectus dated March 8, 2006, as filed on March 9, 2006 pursuant to Rule
424(b) of the Securities Act of 1933, as amended (the "
Securities Act
"); and
(b)
The section entitled "Description of Registrant's Securities to be Registered" contained in
the Registrant's Registration Statement on Form 8-A, filed pursuant to Section 12(g) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") on March 3, 2006.
All documents subsequently filed with the Commission by the Registrant pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, on or after the date of this Registration Statement
and prior to the filing of a post-effective amendment to this Registration Statement which
indicates that all securities offered herein have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference in this Registration
Statement and to be a part thereof from the date of filing of such documents.
Item 4.
Description of Securities
.
Not applicable.
Item 5.
Interests of Named Experts and Counsel
.
Not applicable.
Item 6.
Indemnification of Directors and Officers
.
The Delaware General Corporation Law and the Registrant's bylaws provide for indemnification
of the Registrant's directors and officers for liabilities and expenses that they may incur in such

capacities. In general, the Registrant will indemnify its directors and officers with respect to
actions taken
Table of Contents
by them in good faith in a manner reasonably believed to be in, or not opposed to,
the Registrant's best interests and, with respect to any criminal action or proceeding, actions
that the indemnitee had no reasonable cause to believe were unlawful. Reference is made to the
Registrant's amended and restated bylaws filed as Exhibit 3.3 to the Registration Statement on Form
S-1 (File No. 333-130521).
The Registrant is party to an underwriting agreement which provides that the underwriters are
obligated, under certain circumstances, to indemnify the Registrant's directors, officers and
controlling persons against certain liabilities, including liabilities under the Securities Act.
Reference is made to the form of Underwriting Agreement filed as Exhibit 1.1 to the Registrant's
Registration Statement on Form S-1 (File No. 333-130521).
The Registrant has entered into agreements with certain of its officers and directors that
also provide for such indemnification and expenses and liability reimbursement. These agreements
require the Registrant to indemnify such persons against liabilities that may arise by reason of
their status or service as officers and directors and to advance their expenses incurred as a
result of any proceeding against them as to which they could be indemnified. In addition, the
Registrant has an existing directors and officers liability insurance policy to insure such persons
against certain liabilities.
Item 7.
Exemption From Registration Claimed
.
Not applicable.
Item 8.
Exhibits
.
See the Exhibit Index on the page immediately preceding the exhibits for a list of exhibits
filed as part of this Registration Statement on Form S-8, which Exhibit Index is incorporated
herein by reference.
Item 9.
Undertakings.
(a) The undersigned Registrant hereby undertakes:
(1) 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 20 percent change in the maximum aggregate
offering price set forth in the "Calculation of Registration Fee" table in
the effective Registration Statement;
Table of Contents
(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;
provided
,
however
, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
Registration Statement is on Form S-3, Form S-8 or Form F-3, and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed with or furnished to the Commission by the
Registrant pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
that are incorporated by reference in the Registration Statement.
(2) 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 therein, and the offering of such
securities at that time shall be deemed to be the initial
bona fide
offering
thereof.
(3) 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.
(b) The undersigned Registrant hereby undertakes, that, for purposes of determining any
liability under the Securities Act of 1933, 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 of 1934) that is incorporated by reference in the
Registration Statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed
to be the initial
bona fide
offering thereof.
(c) 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 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 Act and will be
governed by the final adjudication of such issue.
Table of Contents
Pursuant to the requirements of the Securities Act of 1933, 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 Buffalo Grove, State of
Illinois, on March 14, 2006.
Eagle
Test
Systems
,
Inc
.
By:
/s/ Leonard A. Foxman
Leonard A. Foxman
Chief Executive Officer and President
POWER OF ATTORNEY AND SIGNATURES
We, the undersigned officers and directors of Eagle Test Systems, Inc. (the
"
Company
"), hereby severally constitute and appoint Leonard A. Foxman and Stephen J.
Hawrysz, and each of them singly, our true and lawful attorneys, with full power to them, and to
each of them singly, to sign for us and in our names in the capacities indicated below, any and all
amendments to this Registration Statement, and all other documents in connection therewith to be
filed with the Securities and Exchange Commission, and generally to do all things in our names and
on our behalf in such capacities to enable the Company to comply with the provisions of the
Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities indicated on
March 14, 2006:
Signature
Title(s)
/s/ Leonard A. Foxman
Chief Executive Officer, President and Director
Leonard A. Foxman
(Principal
Executive Officer)
/s/ Stephen J. Hawrysz
Chief Financial Officer and Treasurer
Stephen J. Hawrysz
(Principal Financial and Accounting Officer)
/s/ Theodore D. Foxman
Chief Operating Officer, Executive Vice President
and Director
Theodore D. Foxman
/s/ Michael C. Child
Director
Michael C. Child
/s/ Ross W. Manire
Director
Ross W. Manire
William H. Gibbs
Director
/s/ David B. Mullen
Director
David B. Mullen
Table of Contents
INDEX TO EXHIBITS
Exhibit No.
Description of Exhibit
3.1
Form of Second Amended and Restated Certificate of Incorporation of the
Registrant (filed as Exhibit 3.2 to the Registrant's Registration Statement on
Form S-1 (File No. 333-130521) and incorporated herein by reference)
3.2
Form of Amended and Restated By-laws of the Registrant (filed as
Exhibit 3.3 to the Registrant's Registration Statement on Form
S-1 (No. 333-130521) and incorporated herein by reference)
4.1
Specimen Stock Certificate (filed as Exhibit 4.1 to the
Registrant's Registration Statement on Form S-1 (No. 333-130521)
and incorporated herein by reference)
5.1
Opinion of Goodwin Procter LLP
23.1
Consent of Goodwin Procter LLP (included in Exhibit 5.1)
23.2
Consent of Independent Registered Public Accounting Firm
24.1
Power of Attorney (included as part of the signature page of
this Registration Statement)
99.1
2003 Stock Option and Grant Plan (filed as Exhibit 10.1 to the
Registrant's Registration Statement on Form S-1 (No. 333-117274)
and incorporated herein by reference)
99.2
2006 Stock Option and Incentive Plan (filed as Exhibit 10.2 to
the Registrant's
Registration Statement on Form S-1 (No. 333-130521) and
incorporated herein
by reference)