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<TITLE>sv8</TITLE>
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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 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<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, DC 20549<BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</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: 18pt"><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>TOMOTHERAPY INCORPORATED</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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<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 0px solid #000000"><B>Wisconsin</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 0px solid #000000"><B>39-1914727</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction of incorporation or organization)
</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: 18pt"><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: 12pt"><B>1240 Deming Way<BR>
Madison, Wisconsin 53717</B></DIV>

<DIV align="center" style="font-size: 10pt">(Address of principal executive office including zip code)</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; margin-top: 12pt"><B>TomoTherapy Incorporated 2007 Equity Incentive Plan, as amended</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>TomoTherapy Incorporated 2007 Employee Stock Purchase Plan, as amended</B></DIV>

<DIV align="center" style="font-size: 10pt">(Full title of the plan)</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">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="center"><B>Brenda S. Furlow</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Copy to:</B></TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="center"><B>Vice President, General Counsel, and Corporate Secretary</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Michael A. Gordon</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top">TomoTherapy Incorporated <BR>
1240 Deming Way <BR>
Madison, Wisconsin 53717
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Sidley Austin LLP<BR>
One South Dearborn<BR>
Chicago, Illinois 60603</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(608) 824-2800
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(312) 853-2217</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 0pt">(Name, address, and telephone number, including area code, of agent for service)</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate by check mark whether the registrant is a large accelerated filer, an accelerated
filer, a non-accelerated filer or a smaller reporting company. See the definitions of &#147;large
accelerated filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2 of the
Exchange Act. (Check one):
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<TABLE width="100%" style="font-size: 10pt; margin-top: 0pt">
<TR valign="top"><TD> Large accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT></TD><TD align="center">Accelerated filer&nbsp;<FONT face="Wingdings">&#254;</FONT>&nbsp;</TD><TD align="center">Non-accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT><BR>(Do not check if a smaller reporting company)</TD><TD align="right">Smaller reporting company&nbsp;<FONT face="Wingdings">&#111;</FONT></TD></TR></TABLE>
</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 style="font-size: 1px" valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&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: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>

    <TD style="border-right: 2px solid #000000">&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>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>

    <TD style="border-right: 2px 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>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Offering</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>

    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount to be</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Price per</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Aggregate</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Registration</B></TD>

    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>Title of Securities To Be Registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #ffffff"><B>Registered (1)</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Share</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #ffffff"><B>Offering Price</B></TD>

    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #ffffff"><B>Fee</B></TD>

    <TD width="1%">&nbsp;</TD>
</TR>


<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, par value $0.01 per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap colspan="3" align="center" style="border-top: 2px solid #000000">5,033,334 shares</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000 valign = top">$</TD>
    <TD align="right" style="border-top: 2px solid #000000 valign = bottom">2.48</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">12,482.668.32</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">696.53</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, par value $0.01 per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD colspan="3" nowrap align="center" style="border-top: 2px solid #000000">650,000  shares</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">2.48</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">1,612,000</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">89.95</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD width="1%" style="border-top: 2px 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>

<!-- End Table Body -->
</TABLE>
</DIV>



<DIV style="margin-top: 3pt">
<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 of the Securities Act of 1933, as amended (the &#147;Securities Act&#148;),
this registration statement shall also cover any additional shares of the Registrant&#146;s
common stock that become issuable under the Registrant&#146;s 2007 Equity Incentive Plan or 2007
Employee Stock Purchase Plan by reason of any stock dividend, stock split, recapitalization
or other similar transaction effected which results in an increase in the number of the
Registrant&#146;s outstanding shares of common stock issuable pursuant to awards granted under
such plan.</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the registration fee and, pursuant to
Rule 457(c) and (h)&nbsp;under the Securities Act, based upon the average of the high and low
prices of the Registrant&#146;s common stock as reported on the Nasdaq Global Select Market on
July&nbsp;10, 2009.</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"><!-- 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>
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	<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 II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;4. Description of Securities.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;5. Interests of Named Experts and Counsel.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;6. Indemnification of Directors and Officers.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;7. Exemption from Registration Claimed.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;8. Exhibits.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#008">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#009">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="c52312exv4w5.htm">EX-4.5</A></TD></TR>
<TR><TD colspan="9"><A HREF="c52312exv4w6.htm">EX-4.6</A></TD></TR>
<TR><TD colspan="9"><A HREF="c52312exv5w1.htm">EX-5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="c52312exv23w2.htm">EX-23.2</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>






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


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Registration Statement on Form S-8 is filed pursuant to General Instruction E to Form S-8
for the purpose of registering an additional 5,033,334 shares of the common stock, par value $0.01
per share (&#147;Common Stock&#148;), of TomoTherapy Incorporated (the &#147;Company&#148; or the &#147;Registrant&#148;) that
may be offered and sold under the TomoTherapy Incorporated 2007 Equity Incentive Plan (the &#147;2007
EIP&#148;) and an additional 650,000 shares of Common Stock that may be offered and sold under the
TomoTherapy Incorporated 2007 Employee Stock Purchase Plan (the &#147;2007 ESPP,&#148; together with the 2007
EIP, the &#147;Plans&#148;). The Company&#146;s shareholders approved the addition of these shares to the Plans
at the Company&#146;s annual meeting of shareholders on May&nbsp;1, 2009.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INCORPORATION OF EARLIER REGISTRATION STATEMENT BY REFERENCE</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The contents of the Company&#146;s previously filed Registration Statement on Form S-8 (File No.
333-144318) filed with the Securities and Exchange Commission (the &#147;SEC&#148;) on July&nbsp;3, 2007, relating
to the Plans, are hereby incorporated herein by reference to the extent not otherwise amended or
superseded by the contents hereof.
</DIV>

<!-- link1 "PART II" -->
<DIV align="left"><A NAME="000"></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: 6pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>

</DIV>

<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="001"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The following documents previously filed by the Company with the SEC are hereby incorporated herein
by reference:
</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">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Company&#146;s Annual Report on Form 10-K for the year ended December&nbsp;31, 2008, as
amended by Amendment No.&nbsp;1 on Form 10-K/A filed by the Company on April&nbsp;1, 2009 and
Amendment No.&nbsp;2 on Form 10-K/A filed by the Company on May&nbsp;12, 2009.</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)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Company&#146;s Quarterly Report on Form 10-Q for the quarter ended March&nbsp;31, 2009 filed
by the Company on May&nbsp;13, 2009;</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">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Company&#146;s Current Reports on Form 8-K filed by the Company on January&nbsp;16, February
10, February&nbsp;11, March&nbsp;19, April&nbsp;8, April&nbsp;13, April&nbsp;16, April&nbsp;21, April&nbsp;29, May&nbsp;5, May&nbsp;12,
and June&nbsp;11, 2009 and the Company&#146;s Current Report on Form 8-K/A filed by the Company
on March&nbsp;12, 2009;</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">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>All other reports filed by the Company pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), since December&nbsp;31, 2008;
and</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">(e)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Common Stock contained in the Company&#146;s Amendment No.&nbsp;1 to the
Registration Statement on Form S-1 filed by the Company on October&nbsp;1, 2007 (File No.
333-146219) under the heading &#147;Description of Capital Stock,&#148; including any amendment or
report filed for the purpose of updating such description, and the description of the
Company&#146;s anti-takeover provisions contained in its Quarterly Report on Form 10-Q filed
with the SEC on November&nbsp;7, 2008 (File No.&nbsp;001-33452) under the heading &#147;Item&nbsp;1A. Risk
Factors&#151;Anti-takeover provisions included in our amended and restated articles of
incorporation and bylaws could delay or prevent a change of control of our company, which
could materially adversely impact the value of our common stock and may prevent or
frustrate attempts by our shareholders to replace or remove our current management.&#148;</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents filed by the Company pursuant to Section&nbsp;13(a), 13(c), 14 or 15(d) of the
Exchange Act after the date of this Registration Statement and prior to the filing of a
post-effective amendment which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold are deemed to be incorporated by reference into
this Registration Statement and to be a part hereof from the respective dates of filing of such
documents (such documents, and the documents enumerated above, being hereinafter referred to as
&#147;Incorporated Documents&#148;).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained in an Incorporated Document shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a statement contained in
any other subsequently filed Incorporated Document modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
</DIV>
<!-- link2 "Item&nbsp;4. Description of Securities." -->
<DIV align="left"><A NAME="002"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;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&nbsp;5. Interests of Named Experts and Counsel." -->
<DIV align="left"><A NAME="003"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</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">

<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers." -->
<DIV align="left"><A NAME="004"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company&#146;s Amended and Restated Bylaws provide that the Company shall indemnify its
directors and executive officers and may indemnify its employees and other agents to the fullest
extent permitted by the Wisconsin Business Corporation Law.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The provisions of the Wisconsin Business Corporation Law concerning indemnification of
directors and officers are described in Item&nbsp;6 of the Company&#146;s Registration Statement on Form S-8
(File No.&nbsp;333-144318) filed with the SEC on July&nbsp;3, 2007 and are hereby incorporated herein by
reference.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company has entered into Indemnification Agreements with each of the Company&#146;s directors
and officers. Descriptions of the terms of the Indemnification Agreements are contained in the
Company&#146;s Quarterly Report on Form 10-Q filed with the SEC on November&nbsp;7, 2008, under the heading
&#147;Indemnification Agreements&#148; under &#147;Item&nbsp;5. Other Information&#148; and are hereby incorporated herein
by reference.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, we maintain directors&#146; and officers&#146; liability insurance that insures against
certain liabilities, including liabilities under the Securities Act of 1933, as amended (the
&#147;Securities Act&#148;), subject to applicable restrictions.
</DIV>

<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed." -->
<DIV align="left"><A NAME="005"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;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&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="006"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The exhibits to this Registration Statement are listed in the accompanying Exhibit&nbsp;Index.
</DIV>

<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="007"></A></DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</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">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The undersigned Registrant hereby undertakes:</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="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:</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="10%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any prospectus required by Section&nbsp;10(a)(3) of the Securities
Act;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="10%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To reflect in the prospectus any facts or events arising after the
effective date of this 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 this Registration Statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="10%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(iii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any material
change to such information in this Registration Statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="10%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><I>&nbsp;</I></TD>
    <TD width="1%"><I>&nbsp;</I></TD>
    <TD><I>provided, however</I>, that paragraphs (a)(1)(i) and (a)(1)(ii) 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 SEC by the Registrant pursuant to
Section&nbsp;13 or 15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.</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="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>That, for the purpose of determining any liability under the Securities Act, 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.</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="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>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.</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="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(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 15(d) of the Exchange Act that is incorporated by reference in this
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.</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="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Insofar as indemnification for liabilities arising under the Securities Act 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 SEC 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="008"></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 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 Madison, State of Wisconsin, on this 16th day of July,
2009.
</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"><B>TomoTherapy Incorporated</B><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/  Frederick A. Robertson
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Frederick A. Robertson, M.D.&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Chief Executive Officer and President&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;KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints each of Thomas E. Powell and Brenda S. Furlow his or her true and lawful
attorney-in-fact, with full power of substitution and resubstitution for him or her and in his or
her name, place and stead, in any and all capacities to sign any and all amendments (including
post-effective amendments) to this Registration Statement, including any filings under Rule&nbsp;462
promulgated under the Securities Act of 1933, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange Commission, hereby
ratifying and confirming all that said attorney-in-fact or his or her substitute, each acting
alone, may lawfully do or cause to be done by virtue thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&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 this 16th day of July, 2009.
</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="45%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="50%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Position</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frederick A. Robertson, M.D.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Frederick A. Robertson, M.D.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Chief Executive Officer, President and Director<br>&nbsp;(principal
executive officer)</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Thomas E. Powell
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Thomas E. Powell
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Chief Financial Officer and Treasurer<br>&nbsp;(principal
financial and accounting officer)</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ T. Rockwell Mackie, Ph.D.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
T. Rockwell Mackie, Ph.D.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John J. Greisch
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John J. Greisch
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Sam R. Leno
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Sam R. Leno
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ H. Jonathan McCloskey
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
H. Jonathan McCloskey
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John J. McDonough
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John J. McDonough
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Cary J. Nolan
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Cary J. Nolan
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Carlos A. Perez, M.D.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Carlos A. Perez, M.D.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Roy T. Tanaka
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Roy T. Tanaka
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frances S. Taylor
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Frances S. Taylor
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director&nbsp;</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 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="009"></A></DIV>
<DIV align="center" style="font-size: 10pt; margin-top: 18pt">EXHIBIT INDEX
</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="6%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="91%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<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 (1)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Articles of Incorporation of the Company</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 (1)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws of the Company</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">4.3 (2)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">TomoTherapy Incorporated 2007 Equity 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">4.4 (2)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">TomoTherapy Incorporated 2007 Employee Stock Purchase 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">4.5*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">TomoTherapy Incorporated First Amendment to 2007 Equity 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">4.6*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">TomoTherapy Incorporated First Amendment to 2007 Employee Stock Purchase 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">5.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Company&#146;s General Counsel regarding legality of securities</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 Company&#146;s General Counsel (included in Exhibit&nbsp;5.1 to 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">23.2*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Grant Thornton 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">24.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included in the Signature Page to this Registration Statement)</TD>
</TR>
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    <TD width="96"></TD>
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    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Filed herewith.</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated herein by reference to the Company&#146;s Quarterly Report on Form 10-Q
filed with the SEC on November&nbsp;7, 2008 (File No.&nbsp;001-33452).</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated herein by reference to Amendment No.&nbsp;2 to the Company&#146;s Registration
Statement on Form S-1 filed with the SEC on April&nbsp;16, 2007 (File No.&nbsp;333-140600).</TD>
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sv8
Table of Contents
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
TOMOTHERAPY INCORPORATED
(Exact name of registrant as specified in its charter)
Wisconsin
39-1914727
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification No.)
1240 Deming Way
Madison, Wisconsin 53717
(Address of principal executive office including zip code)
TomoTherapy Incorporated 2007 Equity Incentive Plan, as amended
TomoTherapy Incorporated 2007 Employee Stock Purchase Plan, as amended
(Full title of the plan)
Brenda S. Furlow
Copy to:
Vice President, General Counsel, and Corporate Secretary
Michael A. Gordon
TomoTherapy Incorporated
1240 Deming Way
Madison, Wisconsin 53717
Sidley Austin LLP
One South Dearborn
Chicago, Illinois 60603
(608) 824-2800
(312) 853-2217
(Name, address, and telephone number, including area code, of agent for service)
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated
filer, a non-accelerated filer or a smaller reporting company. See the definitions of "large
accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the
Exchange Act. (Check one):
Large accelerated filer
o
Accelerated filer
þ
Non-accelerated filer
o
(Do not check if a smaller reporting company)
Smaller reporting company
o
CALCULATION OF REGISTRATION FEE
Proposed
Maximum
Proposed
Offering
Maximum
Amount of
Amount to be
Price per
Aggregate
Registration
Title of Securities To Be Registered
Registered (1)
Share
Offering Price
Fee
Common Stock, par value $0.01 per share
5,033,334 shares
$
2.48
(2)
$
12,482.668.32
(2)
$
696.53
(2)
Common Stock, par value $0.01 per share
650,000  shares
$
2.48
(2)
$
1,612,000
(2)
$
89.95
(2)
(1)
Pursuant to Rule 416 of the Securities Act of 1933, as amended (the "Securities Act"),
this registration statement shall also cover any additional shares of the Registrant's
common stock that become issuable under the Registrant's 2007 Equity Incentive Plan or 2007
Employee Stock Purchase Plan by reason of any stock dividend, stock split, recapitalization
or other similar transaction effected which results in an increase in the number of the
Registrant's outstanding shares of common stock issuable pursuant to awards granted under
such plan.
(2)
Estimated solely for the purpose of calculating the registration fee and, pursuant to
Rule 457(c) and (h) under the Securities Act, based upon the average of the high and low
prices of the Registrant's common stock as reported on the Nasdaq Global Select Market on
July 10, 2009.
TABLE OF CONTENTS
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.
SIGNATURES
EXHIBIT INDEX
EX-4.5
EX-4.6
EX-5.1
EX-23.2
Table of Contents
EXPLANATORY NOTE
This Registration Statement on Form S-8 is filed pursuant to General Instruction E to Form S-8
for the purpose of registering an additional 5,033,334 shares of the common stock, par value $0.01
per share ("Common Stock"), of TomoTherapy Incorporated (the "Company" or the "Registrant") that
may be offered and sold under the TomoTherapy Incorporated 2007 Equity Incentive Plan (the "2007
EIP") and an additional 650,000 shares of Common Stock that may be offered and sold under the
TomoTherapy Incorporated 2007 Employee Stock Purchase Plan (the "2007 ESPP," together with the 2007
EIP, the "Plans"). The Company's shareholders approved the addition of these shares to the Plans
at the Company's annual meeting of shareholders on May 1, 2009.
INCORPORATION OF EARLIER REGISTRATION STATEMENT BY REFERENCE
The contents of the Company's previously filed Registration Statement on Form S-8 (File No.
333-144318) filed with the Securities and Exchange Commission (the "SEC") on July 3, 2007, relating
to the Plans, are hereby incorporated herein by reference to the extent not otherwise amended or
superseded by the contents hereof.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents previously filed by the Company with the SEC are hereby incorporated herein
by reference:
(a)
The Company's Annual Report on Form 10-K for the year ended December 31, 2008, as
amended by Amendment No. 1 on Form 10-K/A filed by the Company on April 1, 2009 and
Amendment No. 2 on Form 10-K/A filed by the Company on May 12, 2009.
(b)
The Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2009 filed
by the Company on May 13, 2009;
(c)
The Company's Current Reports on Form 8-K filed by the Company on January 16, February
10, February 11, March 19, April 8, April 13, April 16, April 21, April 29, May 5, May 12,
and June 11, 2009 and the Company's Current Report on Form 8-K/A filed by the Company
on March 12, 2009;
(d)
All other reports filed by the Company pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), since December 31, 2008;
and
(e)
The description of the Common Stock contained in the Company's Amendment No. 1 to the
Registration Statement on Form S-1 filed by the Company on October 1, 2007 (File No.
333-146219) under the heading "Description of Capital Stock," including any amendment or
report filed for the purpose of updating such description, and the description of the
Company's anti-takeover provisions contained in its Quarterly Report on Form 10-Q filed
with the SEC on November 7, 2008 (File No. 001-33452) under the heading "Item 1A. Risk
Factors—Anti-takeover provisions included in our amended and restated articles of
incorporation and bylaws could delay or prevent a change of control of our company, which
could materially adversely impact the value of our common stock and may prevent or
frustrate attempts by our shareholders to replace or remove our current management."
All documents filed by the Company pursuant to Section 13(a), 13(c), 14 or 15(d) of the
Exchange Act after the date of this Registration Statement and prior to the filing of a
post-effective amendment which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold are deemed to be incorporated by reference into
this Registration Statement and to be a part hereof from the respective dates of filing of such
documents (such documents, and the documents enumerated above, being hereinafter referred to as
"Incorporated Documents").
Any statement contained in an Incorporated Document shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a statement contained in
any other subsequently filed Incorporated Document modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
Not applicable.
Table of Contents
Item 6. Indemnification of Directors and Officers.
The Company's Amended and Restated Bylaws provide that the Company shall indemnify its
directors and executive officers and may indemnify its employees and other agents to the fullest
extent permitted by the Wisconsin Business Corporation Law.
The provisions of the Wisconsin Business Corporation Law concerning indemnification of
directors and officers are described in Item 6 of the Company's Registration Statement on Form S-8
(File No. 333-144318) filed with the SEC on July 3, 2007 and are hereby incorporated herein by
reference.
The Company has entered into Indemnification Agreements with each of the Company's directors
and officers. Descriptions of the terms of the Indemnification Agreements are contained in the
Company's Quarterly Report on Form 10-Q filed with the SEC on November 7, 2008, under the heading
"Indemnification Agreements" under "Item 5. Other Information" and are hereby incorporated herein
by reference.
In addition, we maintain directors' and officers' liability insurance that insures against
certain liabilities, including liabilities under the Securities Act of 1933, as amended (the
"Securities Act"), subject to applicable restrictions.
Item 7. Exemption from Registration Claimed.
Not applicable.
Item 8. Exhibits.
The exhibits to this Registration Statement are listed in the accompanying Exhibit Index.
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;
(ii)
To reflect in the prospectus any facts or events arising after the
effective date of this 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 this Registration Statement;
(iii)
To include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any material
change to such information in this Registration Statement;
provided, however
, that paragraphs (a)(1)(i) and (a)(1)(ii) 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 SEC by the Registrant pursuant to
Section 13 or 15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.
(2)
That, for the purpose of determining any liability under the Securities Act, 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, each filing of the Registrant's annual report pursuant
to Section 13(a) or 15(d) of the Exchange Act that is incorporated by reference in this
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 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 SEC 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.
Table of Contents
SIGNATURES
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 Madison, State of Wisconsin, on this 16th day of July,
2009.
TomoTherapy Incorporated
By:
/s/  Frederick A. Robertson
Frederick A. Robertson, M.D.
Chief Executive Officer and President
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints each of Thomas E. Powell and Brenda S. Furlow his or her true and lawful
attorney-in-fact, with full power of substitution and resubstitution for him or her and in his or
her name, place and stead, in any and all capacities to sign any and all amendments (including
post-effective amendments) to this Registration Statement, including any filings under Rule 462
promulgated under the Securities Act of 1933, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange Commission, hereby
ratifying and confirming all that said attorney-in-fact or his or her substitute, each acting
alone, may lawfully do or cause to be done by virtue thereof.
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 this 16th day of July, 2009.
Name
Position
/s/ Frederick A. Robertson, M.D.
Frederick A. Robertson, M.D.
Chief Executive Officer, President and Director
(principal
executive officer)
/s/ Thomas E. Powell
Thomas E. Powell
Chief Financial Officer and Treasurer
(principal
financial and accounting officer)
/s/ T. Rockwell Mackie, Ph.D.
T. Rockwell Mackie, Ph.D.
Director
/s/ John J. Greisch
John J. Greisch
Director
/s/ Sam R. Leno
Sam R. Leno
Director
/s/ H. Jonathan McCloskey
H. Jonathan McCloskey
Director
/s/ John J. McDonough
John J. McDonough
Director
/s/ Cary J. Nolan
Cary J. Nolan
Director
/s/ Carlos A. Perez, M.D.
Carlos A. Perez, M.D.
Director
/s/ Roy T. Tanaka
Roy T. Tanaka
Director
/s/ Frances S. Taylor
Frances S. Taylor
Director
Table of Contents
EXHIBIT INDEX
Exhibit
Number
Description
4.1 (1)
Amended and Restated Articles of Incorporation of the Company
4.2 (1)
Amended and Restated Bylaws of the Company
4.3 (2)
TomoTherapy Incorporated 2007 Equity Incentive Plan
4.4 (2)
TomoTherapy Incorporated 2007 Employee Stock Purchase Plan
4.5*
TomoTherapy Incorporated First Amendment to 2007 Equity Incentive Plan
4.6*
TomoTherapy Incorporated First Amendment to 2007 Employee Stock Purchase Plan
5.1*
Opinion of Company's General Counsel regarding legality of securities
23.1
Consent of Company's General Counsel (included in Exhibit 5.1 to this Registration Statement)
23.2*
Consent of Grant Thornton LLP
24.1*
Power of Attorney (included in the Signature Page to this Registration Statement)
*
Filed herewith.
(1)
Incorporated herein by reference to the Company's Quarterly Report on Form 10-Q
filed with the SEC on November 7, 2008 (File No. 001-33452).
(2)
Incorporated herein by reference to Amendment No. 2 to the Company's Registration
Statement on Form S-1 filed with the SEC on April 16, 2007 (File No. 333-140600).