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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="right" style="font-size: 10pt; margin-top: 12pt"><B>As
filed with the Securities and Exchange Commission on November&nbsp;21, 2005<BR>
Registration No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</B>
</DIV>


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




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

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


<DIV align="center" style="font-size: 10pt; margin-top: 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: 18pt; margin-top: 12pt"><B>FORM S-8<BR>
REGISTRATION STATEMENT</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>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>KLA-TENCOR CORPORATION</B>
</DIV>

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


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 18pt; 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>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>DELAWARE<BR>
(State of incorporation)</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>04-2564110<BR>
(I.R.S. Employer Identification No.)</B></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>160 Rio Robles<BR>
San Jose, CA 95134<BR>
(Address, including zip code, of principal executive offices)</B>
</DIV>

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



<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>AMENDED AND RESTATED 1997 EMPLOYEE STOCK PURCHASE PLAN<BR>
(Full Title of the Plan)</B><BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>STUART J. NICHOLS, ESQ.<BR>
VICE PRESIDENT, GENERAL COUNSEL<BR>
KLA-TENCOR CORPORATION<BR>
160 Rio Robles<BR>
San Jose, CA 95134<BR>
(Name and address of agent for service)</B><BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>(408)&nbsp;875-4200<BR>
(Telephone number, including area code, of agent for service)</B><BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV><BR>
</DIV>


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

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="21" 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"><B>Proposed Maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed Maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&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 nowrap align="center" colspan="2"><B>Amount to be</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Offering Price</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Aggregate Offering</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Registration</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><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="2"><B>Registered (1)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Per Share</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Price</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Fee (2)</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
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<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, $0.001 par value, to be issued under
the Amended and Restated Stock Purchase Plan</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 style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">1,000,000</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</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 align="center" valign="bottom" style="border-top: 2px solid #000000">$42.87</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">42,870,000</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</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 align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">5,045.80</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</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="21" style="border-top: 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>Amount of securities to be registered computed in accordance with Rule 457(h) of the Securities Act of 1933, as amended, (the &#147;<B>Securities
Act</B>&#148;) as the maximum number of the Registrant&#146;s Common Stock issuable under the plans covered by this Registration Statement. Pursuant to Rule
416(a) of the Securities Act, this Registration Statement shall also cover any additional shares of the Registrant&#146;s Common Stock that become
issuable under the plan covered by this Registration Statement by reason of any stock split, stock dividend, recapitalization or other similar
transaction effected without the Registrant&#146;s receipt of consideration that results in an increase in the number of the Registrant&#146;s outstanding
shares of Common Stock.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><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>Estimated in accordance with Rule 457(c) of the Securities Act solely for the purpose of calculating the registration fee based on 85% of the
average of the high and low prices per share of the Common Stock as
reported on The Nasdaq National Market on November&nbsp;17, 2005.</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>
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	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">PART II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Item&nbsp;3. <U>Incorporation of Documents by Reference</U>.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;4. <u>Description of Securities</u>.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;5. <u>Interests of Named Experts and Counsel</u>.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;6. <u>Indemnification of Directors and Officers</u>.</A></TD></TR>
<TR><TD colspan="9"><A HREF="f14390exv5w1.htm">EXHIBIT 5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="f14390exv23w1.htm">EXHIBIT 23.1</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 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: 18pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</DIV>

<!-- link2 "Item&nbsp;3. <U>Incorporation of Documents by Reference</U>." -->
<DIV align="left"><A NAME="001"></A></DIV>

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


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KLA-Tencor Corporation (the &#147;<B>Registrant</B>&#148; or the &#147;<B>Company</B>&#148;) hereby incorporates by reference in
this Registration Statement the following documents:
</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>Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended June&nbsp;30, 2005
(File No.&nbsp;000-09992) filed pursuant to Section 13(a) of the Securities Exchange Act of
1934, as amended (the &#147;<B>Exchange Act</B>&#148;);</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>All other reports filed by the Registrant pursuant to Section 13(a) or 15(d) of
the Exchange Act since the end of the fiscal year covered by the Annual Report referred
to in (a)&nbsp;above;</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 description of the Registrant&#146;s Common Stock as set forth in the
Registration Statement filed by the Registrant on Form 8-A on March&nbsp;29, 1989 (File No.
000-09992) pursuant to Section 12(g) of the Exchange Act and any amendments or reports
thereto filed with the Securities and Exchange Commission for the purpose of updating
such description including Amendment No.&nbsp;1 to Form 8-A filed September&nbsp;25, 1995 and
Amendment No.&nbsp;2 to Form 8-A filed September&nbsp;24, 1996; 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">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>All other descriptions of the Registrant&#146;s Common Stock contained in a
registration statement filed under the Exchange Act, including any amendment or report
filed for the purpose of updating such description.</TD>
</TR>

</TABLE>
</DIV>

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

<!-- link2 "Item&nbsp;4. <u>Description of Securities</u>." -->
<DIV align="left"><A NAME="002"></A></DIV>

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


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

<!-- link2 "Item&nbsp;5. <u>Interests of Named Experts and Counsel</u>." -->
<DIV align="left"><A NAME="003"></A></DIV>

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


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

<!-- link2 "Item&nbsp;6. <u>Indemnification of Directors and Officers</u>." -->
<DIV align="left"><A NAME="004"></A></DIV>

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


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145(a) of the Delaware General Corporation Law (the &#147;<B>DGCL</B>&#148;) provides in relevant part
that &#147;&#091;a&#093; corporation shall have power to indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action by or in the right
of the corporation) by reason of the fact that the person is or was a director, officer, employee
or agent of the corporation, or is or was serving at the request of the corporation as a director,
officer, employee or agent of another corporation, partnership, joint
</DIV>

<P align="right" style="font-size: 10pt">II-1
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">venture, trust or other enterprise, against expenses (including attorneys&#146; fees), judgments,
fines and amounts paid in settlement actually and reasonably incurred by the person in connection
with such action, suit or proceeding if the person acted in good faith and in a manner the person
reasonably believed to be in or not opposed to the best interests of the corporation, and, with
respect to any criminal action or proceeding, had no reasonable cause to believe the person&#146;s
conduct was unlawful.&#148; With respect to derivative actions, Section 145(b) of the DGCL provides in
relevant part that &#147;&#091;a&#093; corporation shall have power to indemnify any person who was or is a party
or is threatened to be made a party to any threatened, pending or completed action or suit by or in
the right of the corporation to procure a judgment in its favor by reason of the fact that the
person is or was a director, officer, employee or agent of the corporation, or is or was serving at
the request of the corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, against expenses (including attorneys&#146; fees)
actually and reasonably incurred by the person in connection with the defense or settlement of such
action or suit if the person acted in good faith and in a manner reasonably believed to be in or
not opposed to the best interests of the corporation and except that no indemnification shall be
made in respect of any claim, issue or matter as to which such person shall have been adjudged to
be liable to the corporation unless and only to the extent that the Court of Chancery or the court
in which such action or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case, such person is fairly
and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other
court shall deem proper.&#148;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s Amended and Restated Certificate of Incorporation provides that to the
fullest extent permitted by the DGCL, no director of the Registrant shall be personally liable to
the Registrant or its stockholders for monetary damages for breach of fiduciary duty as a director.
The Amended and Restated Certificate of Incorporation also provides that no amendment or repeal of
such provision shall apply to or have any effect on the right to indemnification permitted
thereunder with respect to claims arising from acts or omissions occurring in whole or in part
before the effective date of such amendment or repeal whether asserted before or after such
amendment or repeal.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s Bylaws provide that the Registrant shall indemnify to the fullest extent
permitted by the DGCL each of its directors, officers, employees and other agents against expenses
actually and reasonably incurred in connection with any proceeding arising by reason of the fact
that such person is or was an agent of the Registrant.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has entered into indemnification agreements with its directors and executive
officers and intends to enter into indemnification agreements with any new directors and executive
officers in the future.
</DIV>

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


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

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


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See Exhibit&nbsp;Index.
</DIV>

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


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

<P align="right" style="font-size: 10pt">II-2
</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;(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 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">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any prospectus required by Section
10(a)(3) of the Securities Act of 1933;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><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">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>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; 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="6%" 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 the Registration
Statement or any material change to such information in the Registration
Statement.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">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 periodic
reports filed by the Registrant pursuant to Section&nbsp;13 or Section 15(d) of the Securities Exchange
Act 1934 that are incorporated by reference in the Registration Statement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 bona fide offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Securities
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.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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="right" style="font-size: 10pt">II-3
</DIV>

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

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

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURE</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, as amended, 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 San Jose, State of California, on
November&nbsp;21, 2005.
</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>KLA-TENCOR CORPORATION</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/ Stuart J. Nichols</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Stuart J. Nichols, Vice President,&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">General Counsel&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<P align="right" style="font-size: 10pt">II-4
</DIV>

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

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

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><U><B>POWER OF ATTORNEY</B></U>
</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 Stuart J. Nichols, their true and lawful attorney and agent, with full power of
substitution, with the power to act alone, to sign and execute on behalf of the undersigned any
amendment or amendments to this Registration Statement on Form S-8 and to perform any acts
necessary in order to file such amendments, and each of the undersigned does hereby ratify and
confirm all that said attorney and agent, or his substitute, shall do or cause to be done by virtue
hereof. Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration
Statement has been signed by the following persons in the capacities and on the dates indicated.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Kenneth Levy<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Kenneth Levy</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Chairman of the Board of Directors
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Kenneth L. Schroeder<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Kenneth L. Schroeder</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Chief Executive Officer and Director
(Principal Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Edward W. Barholt<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Edward W. Barholt</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ H. Raymond Bingham<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
H. Raymond Bingham</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Robert T. Bond<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Robert T. Bond</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Stephen P. Kaufman<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Stephen P. Kaufman</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Michael E. Marks<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Michael E. Marks</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Jon D. Tompkins<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Jon D. Tompkins</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Lida Urbanek<BR>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Lida Urbanek</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;21, 2005</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="right" style="font-size: 10pt">II-5
</DIV>

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

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




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


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><U><B>REGISTRATION STATEMENT ON FORM S-8</B></U>
</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="7%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="90%">&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="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<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 Certificate of Incorporation, as amended.</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(2)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Certificate of Amendment of Amended and Restated Certificate of Incorporation.</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(3)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Bylaws of the Registrant, as amended.</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(4)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Rights Agreement dated as of April&nbsp;25, 1996, between the
Registrant and First National Bank of Boston, as Rights Agent. This
agreement includes the Form of Right Certificate as Exhibit&nbsp;A and the Summary
of Terms of Rights as Exhibit&nbsp;B thereto.</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 re: legality</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">10.1(5)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated 1997 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">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Independent Registered
Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>







<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Counsel (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">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (see Page II-5)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



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

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

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;3.1 to the Registrant&#146;s Quarterly Report on Form 10-Q
for the quarter ended March&nbsp;31, 1997 (Commission File No.&nbsp;000-09992).</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 by reference to Exhibit&nbsp;3.1 to the Registrant&#146;s Quarterly Report on Form 10-Q,
for the quarter ended December&nbsp;31, 2000 (Commission File No.&nbsp;000-09992).</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;3.2 to the Registrant&#146;s Registration Statement on Form
S-8, filed December&nbsp;4, 1998 (Commission File No.&nbsp;333-68415).</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(4)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;1 of the Registrant&#146;s report on Form 8-A/A Amendment No.
2 to the Registration Statement on Form 8-A filed September&nbsp;24, 1996 (Commission File No.
000-09992).</TD>
</TR>

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

<TR valign="top">
    <TD nowrap align="left">(5)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;10.1 to the Registrant&#146;s Registration Statement on Form
S-8, filed December&nbsp;26, 2001 (Commission File No.&nbsp;333-75944).</TD>
</TR>

</TABLE>




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

</BODY>
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sv8
Table of Contents
As
filed with the Securities and Exchange Commission on November 21, 2005
Registration No. 333-
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
Under
The Securities Act of 1933
KLA-TENCOR CORPORATION
(Exact name of registrant as specified in its charter)
DELAWARE
(State of incorporation)
04-2564110
(I.R.S. Employer Identification No.)
160 Rio Robles
San Jose, CA 95134
(Address, including zip code, of principal executive offices)
AMENDED AND RESTATED 1997 EMPLOYEE STOCK PURCHASE PLAN
(Full Title of the Plan)
STUART J. NICHOLS, ESQ.
VICE PRESIDENT, GENERAL COUNSEL
KLA-TENCOR CORPORATION
160 Rio Robles
San Jose, CA 95134
(Name and address of agent for service)
(408) 875-4200
(Telephone number, including area code, of agent for service)
CALCULATION OF REGISTRATION FEE
Proposed Maximum
Proposed Maximum
Amount of
Amount to be
Offering Price
Aggregate Offering
Registration
Title of Securities to be Registered
Registered (1)
Per Share
Price
Fee (2)
Common Stock, $0.001 par value, to be issued under
the Amended and Restated Stock Purchase Plan
1,000,000
$42.87
$
42,870,000
$
5,045.80
(1)
Amount of securities to be registered computed in accordance with Rule 457(h) of the Securities Act of 1933, as amended, (the "
Securities
Act
") as the maximum number of the Registrant's Common Stock issuable under the plans covered by this Registration Statement. Pursuant to Rule
416(a) of the Securities Act, this Registration Statement shall also cover any additional shares of the Registrant's Common Stock that become
issuable under the plan covered by this Registration Statement by reason of any stock split, stock dividend, recapitalization or other similar
transaction effected without the Registrant's receipt of consideration that results in an increase in the number of the Registrant's outstanding
shares of Common Stock.
(2)
Estimated in accordance with Rule 457(c) of the Securities Act solely for the purpose of calculating the registration fee based on 85% of the
average of the high and low prices per share of the Common Stock as
reported on The Nasdaq National Market on November 17, 2005.
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
.
EXHIBIT 5.1
EXHIBIT 23.1
Table of Contents
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.
Incorporation of Documents by Reference
.
KLA-Tencor Corporation (the "
Registrant
" or the "
Company
") hereby incorporates by reference in
this Registration Statement the following documents:
(a)
Registrant's Annual Report on Form 10-K for the fiscal year ended June 30, 2005
(File No. 000-09992) filed pursuant to Section 13(a) of the Securities Exchange Act of
1934, as amended (the "
Exchange Act
");
(b)
All other reports filed by the Registrant pursuant to Section 13(a) or 15(d) of
the Exchange Act since the end of the fiscal year covered by the Annual Report referred
to in (a) above;
(c)
The description of the Registrant's Common Stock as set forth in the
Registration Statement filed by the Registrant on Form 8-A on March 29, 1989 (File No.
000-09992) pursuant to Section 12(g) of the Exchange Act and any amendments or reports
thereto filed with the Securities and Exchange Commission for the purpose of updating
such description including Amendment No. 1 to Form 8-A filed September 25, 1995 and
Amendment No. 2 to Form 8-A filed September 24, 1996; and
(d)
All other descriptions of the Registrant's Common Stock contained in a
registration statement filed under the Exchange Act, including any amendment or report
filed for the purpose of updating such description.
All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and
15(d) of the Exchange Act, prior to the filing of a post-effective amendment to this Registration
Statement which indicates that all securities offered hereby have been sold or which deregisters
all securities remaining unsold, shall be deemed to be incorporated by reference in this
Registration Statement and to be a part hereof 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
.
Section 145(a) of the Delaware General Corporation Law (the "
DGCL
") provides in relevant part
that "[a] corporation shall have power to indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action by or in the right
of the corporation) by reason of the fact that the person is or was a director, officer, employee
or agent of the corporation, or is or was serving at the request of the corporation as a director,
officer, employee or agent of another corporation, partnership, joint
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venture, trust or other enterprise, against expenses (including attorneys' fees), judgments,
fines and amounts paid in settlement actually and reasonably incurred by the person in connection
with such action, suit or proceeding if the person acted in good faith and in a manner the person
reasonably believed to be in or not opposed to the best interests of the corporation, and, with
respect to any criminal action or proceeding, had no reasonable cause to believe the person's
conduct was unlawful." With respect to derivative actions, Section 145(b) of the DGCL provides in
relevant part that "[a] corporation shall have power to indemnify any person who was or is a party
or is threatened to be made a party to any threatened, pending or completed action or suit by or in
the right of the corporation to procure a judgment in its favor by reason of the fact that the
person is or was a director, officer, employee or agent of the corporation, or is or was serving at
the request of the corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, against expenses (including attorneys' fees)
actually and reasonably incurred by the person in connection with the defense or settlement of such
action or suit if the person acted in good faith and in a manner reasonably believed to be in or
not opposed to the best interests of the corporation and except that no indemnification shall be
made in respect of any claim, issue or matter as to which such person shall have been adjudged to
be liable to the corporation unless and only to the extent that the Court of Chancery or the court
in which such action or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case, such person is fairly
and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other
court shall deem proper."
The Registrant's Amended and Restated Certificate of Incorporation provides that to the
fullest extent permitted by the DGCL, no director of the Registrant shall be personally liable to
the Registrant or its stockholders for monetary damages for breach of fiduciary duty as a director.
The Amended and Restated Certificate of Incorporation also provides that no amendment or repeal of
such provision shall apply to or have any effect on the right to indemnification permitted
thereunder with respect to claims arising from acts or omissions occurring in whole or in part
before the effective date of such amendment or repeal whether asserted before or after such
amendment or repeal.
The Registrant's Bylaws provide that the Registrant shall indemnify to the fullest extent
permitted by the DGCL each of its directors, officers, employees and other agents against expenses
actually and reasonably incurred in connection with any proceeding arising by reason of the fact
that such person is or was an agent of the Registrant.
The Registrant has entered into indemnification agreements with its directors and executive
officers and intends to enter into indemnification agreements with any new directors and executive
officers in the future.
Item 7.
Exemption from Registration Claimed
Not applicable.
Item 8.
Exhibits
See Exhibit Index.
Item 9.
Undertakings
(a) The undersigned registrant hereby undertakes:
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(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; and
(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 information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed by the Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange
Act 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 Securities
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.
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SIGNATURE
Pursuant to the requirements of the Securities Act of 1933, as amended, 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 San Jose, State of California, on
November 21, 2005.
KLA-TENCOR CORPORATION
By:
/s/ Stuart J. Nichols
Stuart J. Nichols, Vice President,
General Counsel
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POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints Stuart J. Nichols, their true and lawful attorney and agent, with full power of
substitution, with the power to act alone, to sign and execute on behalf of the undersigned any
amendment or amendments to this Registration Statement on Form S-8 and to perform any acts
necessary in order to file such amendments, and each of the undersigned does hereby ratify and
confirm all that said attorney and agent, or his substitute, shall do or cause to be done by virtue
hereof. Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration
Statement has been signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/ Kenneth Levy
Kenneth Levy
Chairman of the Board of Directors
November 21, 2005
/s/ Kenneth L. Schroeder
Kenneth L. Schroeder
Chief Executive Officer and Director
(Principal Executive Officer)
November 21, 2005
/s/ Edward W. Barholt
Edward W. Barholt
Director
November 21, 2005
/s/ H. Raymond Bingham
H. Raymond Bingham
Director
November 21, 2005
/s/ Robert T. Bond
Robert T. Bond
Director
November 21, 2005
/s/ Stephen P. Kaufman
Stephen P. Kaufman
Director
November 21, 2005
/s/ Michael E. Marks
Michael E. Marks
Director
November 21, 2005
/s/ Jon D. Tompkins
Jon D. Tompkins
Director
November 21, 2005
/s/ Lida Urbanek
Lida Urbanek
Director
November 21, 2005
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KLA-TENCOR CORPORATION
REGISTRATION STATEMENT ON FORM S-8
INDEX TO EXHIBITS
Exhibit
Number
Description
4.1(1)
Amended and Restated Certificate of Incorporation, as amended.
4.2(2)
Certificate of Amendment of Amended and Restated Certificate of Incorporation.
4.3(3)
Bylaws of the Registrant, as amended.
4.4(4)
Amended and Restated Rights Agreement dated as of April 25, 1996, between the
Registrant and First National Bank of Boston, as Rights Agent. This
agreement includes the Form of Right Certificate as Exhibit A and the Summary
of Terms of Rights as Exhibit B thereto.
5.1
Opinion re: legality
10.1(5)
Amended and Restated 1997 Employee Stock Purchase Plan
23.1
Consent of Independent Registered
Public Accounting Firm
23.2
Consent of Counsel (included in Exhibit 5.1)
24.1
Power of Attorney (see Page II-5)
(1)
Incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly Report on Form 10-Q
for the quarter ended March 31, 1997 (Commission File No. 000-09992).
(2)
Incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly Report on Form 10-Q,
for the quarter ended December 31, 2000 (Commission File No. 000-09992).
(3)
Incorporated by reference to Exhibit 3.2 to the Registrant's Registration Statement on Form
S-8, filed December 4, 1998 (Commission File No. 333-68415).
(4)
Incorporated by reference to Exhibit 1 of the Registrant's report on Form 8-A/A Amendment No.
2 to the Registration Statement on Form 8-A filed September 24, 1996 (Commission File No.
000-09992).
(5)
Incorporated by reference to Exhibit 10.1 to the Registrant's Registration Statement on Form
S-8, filed December 26, 2001 (Commission File No. 333-75944).