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<TITLE>Komag Incorporated, S-8</TITLE>
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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>


<P align="right"><FONT size="2"><B>As filed with the Securities and
Exchange Commission on July&nbsp;23, 2003<BR>
Registration No.&nbsp;333-__________</B>
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<P align="center"><FONT size="5"><B>SECURITIES AND EXCHANGE COMMISSION</B>
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<DIV align="center"><FONT size="2"><B>Washington, D.C. 20549</B>
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<P align="center"><FONT size="5"><B>FORM S-8</B>
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<DIV align="center"><FONT size="4"><B>REGISTRATION STATEMENT</B>
</FONT></DIV>


<DIV align="center"><FONT size="3"><B>Under<br>
THE SECURITIES ACT OF 1933</B>
</FONT></DIV>


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<P align="center"><FONT size="6"><B>KOMAG, INCORPORATED</B>
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<DIV align="center"><FONT size="2">(Exact name of registrant as specified in its charter)
</FONT></DIV>


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    <TD align="center" valign="top"><FONT size="2"><B>Delaware</B></FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top"><FONT size="2">
<B>94-2914864</B></FONT></TD>
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    <TD align="center" valign="top"><FONT size="2">(State or other jurisdiction of<BR>
incorporation or organization)</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top"><FONT size="2">
(I.R.S. Employer Identification No.)</FONT></TD>
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<P align="center"><FONT size="2"><B>1710 Automation Parkway<BR>
San Jose, California 95131</B><BR>
(Address of Principal Executive Offices)
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<P align="center"><FONT size="2"><B>Amended and Restated 2002 Qualified Stock Plan<BR>
Amended and Restated 2002 Employee Stock Purchase Plan</B><BR>
(Full title of the plans)
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<P align="center"><FONT size="2"><B>Thian Hoo Tan<BR>
Chief Executive Officer<BR>
1710 Automation Parkway<BR>
San Jose, California 95131<BR>
(408)&nbsp;576-2000</B><BR>
(Name, address and telephone number of agent for service)
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<P align="center"><FONT size="2">Copy to:<BR>&nbsp;<br>
<B>Page Mailliard, Esq.<BR>
Wilson Sonsini Goodrich &#038; Rosati<BR>
Professional Corporation<BR>
650 Page Mill Road<BR>
Palo Alto, CA 94304<BR>
(650)&nbsp;493-9300</B>
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<P align="center"><FONT size="2"><B>CALCULATION OF REGISTRATION FEE</B>
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    <TD width="3%">&nbsp;</TD>
    <TD width="8%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
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    <TD colspan="17"><HR size="1" noshade></TD>
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<TR valign="bottom">
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Proposed</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Proposed</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
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<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Title of</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Maximum</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Maximum</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Amount</B></FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Securities</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Amount</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Offering</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Aggregate</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>of</B></FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>to be</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>to be</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Price Per</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Offering</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Registration</B></FONT></TD>
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<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Registered (1)</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Registered</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Share(2)</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Price</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center" colspan="3"><FONT size="1"><B>Fee</B></FONT></TD>
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    <TD colspan="17" align="left"><DIV style="margin-left:10px; text-indent:-10px"><HR size="1" noshade></DIV></TD>
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    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT size="2">Common Stock, $0.01 par value,
issuable pursuant to Amended and Restated 2002
Qualified Stock Plan</FONT></DIV></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD colspan="3" align="center"><FONT size="2">450,000 shares</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">12.70</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">5,715,000</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">462.34</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
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    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT size="2">Common Stock, $0.01 par value,
issuable pursuant to Amended and Restated 2002
Employee Stock Purchase Plan</FONT></DIV></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD colspan="3" align="center"><FONT size="2">300,000 shares</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">12.70</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">3,810,000</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">308.23</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
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    <TD colspan="17" align="left"><DIV style="margin-left:10px; text-indent:-10px"><HR size="1" noshade></DIV></TD>
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<TR valign="bottom" bgcolor="#eeeeee">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT size="2">TOTAL</FONT></DIV></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD colspan="3" align="center"><FONT size="2">750,000 shares</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">&#151;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">9,525,000</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right"><FONT size="2">$</FONT></TD>
    <TD align="right"><FONT size="2">770.57</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
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    <TD colspan="17" align="left"><DIV style="margin-left:10px; text-indent:-10px"><HR size="4" noshade></DIV></TD>
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<P>
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    <TD width="1%" align="left" nowrap><FONT size="2">(1)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="96%"><FONT size="2">This Registration Statement shall also cover any additional shares of Common Stock which
become issuable under the Registrant&#146;s Amended and Restated 2002 Qualified Stock Plan, (the &#147;Plan&#148;) and the
Registrant&#146;s Amended and Restated 2002 Employee Stock Purchase Plan (the &#147;ESPP&#148;) by reason of any stock dividend,
stock split, recapitalization or any other similar transaction effected without the Registrant&#146;s
receipt of consideration which results in an increase in the number of outstanding shares of the
Registrant&#146;s Common Stock.</FONT></TD>
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<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
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<TR valign="top">
    <TD width="1%" align="left" nowrap><FONT size="2">(2)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="96%"><FONT size="2">The Proposed Maximum Offering Price Per Share was estimated in part pursuant to Rule&nbsp;457(h)
under the Securities Act, and, in part, pursuant to Rule&nbsp;457(c) under the Securities Act. With
respect to 450,000 shares which are subject to outstanding options to purchase Common Stock
under the Plan and with respect to 300,000 shares of Common Stock available for future grant
under the ESPP, the Proposed Maximum Offering Price Per Share was estimated pursuant to Rule
457(c) whereby the per share price was determined by reference to the average of the high and
low prices for the Common Stock as reported by The Nasdaq National Market on July&nbsp;17, 2003,
which average was $12.70.</FONT></TD>
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<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
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<TR><TD colspan="9"><A HREF="#000">PART II<BR> INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</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&nbsp;INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="f91601exv4w1.txt">EXHIBIT 4.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="f91601exv4w2.txt">EXHIBIT 4.2</A></TD></TR>
<TR><TD colspan="9"><A HREF="f91601exv5w1.txt">EXHIBIT 5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="f91601exv23w1.txt">EXHIBIT 23.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="f91601exv23w2.txt">EXHIBIT 23.2</A></TD></TR>
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<!-- link1 "PART II<BR> INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
<DIV align="left"><A NAME="000"></A></DIV>

<P align="center"><FONT size="2"><B>PART II<BR>
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</FONT>

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

<P align="left"><FONT size="2">Item&nbsp;3. Incorporation of Documents by Reference.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents and information previously filed with the
Securities and Exchange Commission by Komag, Incorporated (&#147;Komag&#148;) are hereby
incorporated by reference into this Registration Statement and, pursuant to
Rule&nbsp;428 promulgated under the Securities Act of 1933, as amended, into the
Prospectuses relating to this Registration Statement:
</FONT>


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    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(1)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">Komag&#146;s Form&nbsp;10-K Annual Report for the fiscal year ended
December&nbsp;29, 2002, and Quarterly Report on Form&nbsp;10-Q for the
quarter ended March&nbsp;30, 2003.</FONT></TD>
</TR>
<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
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    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(2)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">The registration statement on Form&nbsp;S-8 (SEC File No.
333-101125) filed on November&nbsp;12, 2002, filed under the Securities
Act of 1933.</FONT></TD>
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<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed by Komag pursuant to Sections&nbsp;13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, prior
to the filing of a post-effective amendment which indicates that all securities
offered have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference in this registration
statement and to be part hereof from the date of filing such documents.
</FONT>

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<DIV align="left"><A NAME="002"></A></DIV>

<P align="left"><FONT size="2">Item&nbsp;4. Description of Securities.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</FONT>

<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel." -->
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<P align="left"><FONT size="2">Item&nbsp;5. Interests of Named Experts and Counsel.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</FONT>

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

<P align="left"><FONT size="2">Item&nbsp;6. Indemnification of Directors and Officers.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Komag&#146;s Certificate of Incorporation limits the liability of directors to
the maximum extent permitted by Delaware law. Delaware law provides that
directors of a company will not be personally liable for monetary damages for
breach of their fiduciary duties as directors, except for liability (i)&nbsp;for any
breach of their duty of loyalty to the company or its stockholders, (ii)&nbsp;for
acts or omissions not in good faith or which involve intentional misconduct or
a knowing violation of law, (iii)&nbsp;for unlawful payments of dividends or
unlawful stock repurchases or redemptions as provided in Section&nbsp;174 of the
Delaware General Corporation Law, or (iv)&nbsp;for any transaction from which the
director derived an improper personal benefit.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Komag&#146;s Bylaws provide that Komag shall indemnify its officers and
directors and may indemnify its employees and other agents to the fullest
extent permitted by law. Komag believes that indemnification under its Bylaws
covers at least negligence and gross negligence on the part of indemnified
parties. Komag&#146;s Bylaws also permit it to secure insurance on behalf of any
officer, director, employee or other agent for any liability arising out of his
or her actions in such capacity, regardless of whether the provisions of the
General Corporation Law of Delaware would permit indemnification.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Komag has entered into agreements to indemnify its directors and officers,
in addition to the indemnification provided for under Delaware law, and in
Komag&#146;s Certificate of Incorporation and Bylaws. These agreements, among other
things, indemnify Komag&#146;s directors and officers for certain expenses
(including attorneys&#146; fees), judgments, fines and settlement amounts incurred
by any such person in any action or proceeding, including any action by or in
the right of Komag, arising out of such person&#146;s services as a director or
officer of Komag, any subsidiary of Komag, or any other company or enterprise
to which the person provides services at the request of Komag. Komag believes
that these provisions and agreements are necessary to attract and retain
qualified persons as directors and officers.
</FONT>

<P align="center"><FONT size="2">II-1</FONT>

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<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The limited liability and indemnification provisions in our Certificate of
Incorporation and Bylaws may discourage stockholders from bringing a lawsuit
against our directors for breach of their fiduciary duty and may reduce the
likelihood of derivative litigation against our directors and officers, even
though a derivative action, if successful, might otherwise benefit us and our
stockholders. Moreover, a stockholder&#146;s investment in us may be adversely
affected to the extent we pay the costs of settlement or damage awards against
our directors and officers under these indemnification provisions.
</FONT>

<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed." -->
<DIV align="left"><A NAME="005"></A></DIV>

<P align="left"><FONT size="2">Item&nbsp;7. Exemption from Registration Claimed.
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</FONT>

<!-- link2 "Item&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="006"></A></DIV>

<P align="left"><FONT size="2">Item&nbsp;8. Exhibits.
</FONT>

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<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="86%">&nbsp;</TD>
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<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Exhibit</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Number</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
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    <TD><FONT size="1">&nbsp;</FONT></TD>
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    <TD valign="top" align="right"><FONT size="2">4.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Amended and Restated 2002 Qualified Stock Plan</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
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<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">4.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Amended and Restated 2002 Qualified Employee Stock Purchase Plan</FONT></TD>
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<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">5.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Opinion of Wilson Sonsini Goodrich &#038; Rosati, Professional Corporation</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of Ernst &#038; Young LLP, Independent Auditors</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of KPMG LLP, Independent Auditors</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.3</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of Counsel (Contained in Exhibit&nbsp;5.1)</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">24.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Power of Attorney (see page II-4)</FONT></TD>
</TR>
</TABLE>
</CENTER>

<P>
<HR size="1" width="18%" align="left" noshade>
<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="007"></A></DIV>

<P align="left"><FONT size="2">Item&nbsp;9. Undertakings.
</FONT>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(1)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">Komag hereby undertakes:</FONT></TD>
</TR>
</TABLE>

<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(a)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="88%"><FONT size="2">To file, during any period in which offers or sales
are being made, a post-effective amendment to this registration
statement 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.</FONT></TD>
</TR>
<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(b)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">That, for the purpose of determining any liability
under the Securities Act of 1933, as amended, 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.</FONT></TD>
</TR>
<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(c)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">To remove from registration by means of
post-effective amendment any of the securities being registered
which remain unsold at the termination of the offering.</FONT></TD>
</TR>
</TABLE>

<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(2)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">Komag hereby undertakes that, for purposes of determining
any liability under the Securities Act 1933, as amended, each
filing of Komag&#146;s annual report pursuant to Section&nbsp;13(a) or
Section&nbsp;15(d) of the Securities Exchange Act of 1934, as amended,
(and, where applicable, each filing of an employee benefit plan&#146;s
annual report pursuant to Section&nbsp;15(d) of the Exchange Act of
1934) that is incorporated by reference in the registration
statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of
such securities at that time shall be deemed to be the initial bona
fide offering thereof.</FONT></TD>
</TR>
<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
</TR>
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">(3)</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">Insofar as indemnification for liabilities arising under
the Securities Act of 1933, as amended, may be permitted to
directors, officers and controlling persons of Komag pursuant to
the Delaware General</FONT></TD>
</TR>
</TABLE>
<P align="center"><FONT size="2">II-2</FONT>

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


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%" align="left" nowrap><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="93%"><FONT size="2">Corporation Law, the Certificate of Incorporation or the Bylaws of
Komag, indemnification agreements entered into between Komag and its
officers and directors, or otherwise, Komag has been advised that in
the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the
Securities Act of 1933, as amended, and is, therefore, unenforceable.
In the event that a claim for indemnification against such
liabilities (other than the payment by Komag of expenses incurred or
paid by a director, officer or controlling person 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 hereunder, Komag 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 of 1933, as amended, and will be
governed by the final adjudication of such issue.</FONT></TD>
</TR>
</TABLE>
<P align="center"><FONT size="2">II-3</FONT>

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



<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="008"></A></DIV>

<P align="center"><FONT size="2"><B>SIGNATURES</B>
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act 1933, as amended, Komag
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form&nbsp;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 this 23rd day of
July 2003.
</FONT>

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="85%">
<TR valign="bottom">
    <TD width="45%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="42%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD colspan="3" valign="top" align="left"><FONT size="2">KOMAG, INCORPORATED</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
By:</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">/s/ Thian Hoo Tan</FONT></TD>
</TR>
<TR>
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><HR size="1" noshade></TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">Thian Hoo Tan<br>
<I>Chief Executive Officer and Chairman</I></FONT></TD>
</TR>
</TABLE>
</CENTER>

<P align="center"><FONT size="2"><B>POWER OF ATTORNEY</B>
</FONT>

<P align="left"><FONT size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL PERSONS BY THESE PRESENTS, that each such person whose signature
appears below constitutes and appoints each of Thian Hoo Tan and Kathleen A.
Bayless, as his attorney-in-fact, with full power of substitution, for him in
any and all capacities, to sign any and all amendments to this registration
statement on Form&nbsp;S-8 (including post-effective amendments), 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 substitute or substitutes, may do or
cause to be done by virtue hereof.
</FONT>

<P align="left"><FONT size="2">&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 and on the dates indicated.
</FONT>

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="100%">
<TR valign="bottom">
    <TD width="29%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="50%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="11%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Signature</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center"><FONT size="1"><B>Capacity</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center"><FONT size="1"><B>Date</B></FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><HR size="1" noshade></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center"><HR size="1" noshade></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD nowrap align="center"><HR size="1" noshade></TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;<BR>
/s/ Thian Hoo Tan<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Thian Hoo Tan</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
&nbsp;<BR>
Chief Executive Officer and Chairman
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;<BR>
July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Kathleen A. Bayless<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Kathleen A. Bayless</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Vice President and Chief Financial Officer
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Paul Brahe<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Paul Brahe</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Chris A. Eyre<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Chris A. Eyre</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Neil S. Subin<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Neil S. Subin</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Kenneth R. Swimm<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Kenneth R. Swimm</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ David G. Takata<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
David G. Takata</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Harry Van Wickle<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Harry Van Wickle</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Raymond H. Wechsler<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Raymond H. Wechsler</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
<TR><TD><FONT size="2">&nbsp;</FONT></TD></TR>
<TR valign="bottom">
    <TD valign="top"><FONT size="2">/s/ Michael Lee Workman<BR>
</FONT>
<HR size="1" noshade><FONT size="2">
Michael Lee Workman</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Director
</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">July 23, 2003</FONT></TD>
</TR>
</TABLE>
</CENTER>
<P align="center"><FONT size="2">&nbsp;</FONT>

<P align="center"><FONT size="2">II-4
</FONT>
<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<!-- link1 "EXHIBIT&nbsp;INDEX" -->
<DIV align="left"><A NAME="009"></A></DIV>

<P align="center"><FONT size="2"><B>EXHIBIT&nbsp;INDEX</B>
</FONT>

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="85%">
<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="86%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Exhibit</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><FONT size="1"><B>Number</B></FONT></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD><FONT size="1"><B>Description</B></FONT></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="center"><HR size="1" noshade></TD>
    <TD><FONT size="1">&nbsp;</FONT></TD>
    <TD align="left"><HR size="1" noshade width="10%"></TD>
</TR>
<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">4.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Amended and Restated 2002 Qualified Stock Plan</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">4.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Amended and Restated 2002 Qualified Employee Stock Purchase Plan</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">5.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Opinion of Wilson Sonsini Goodrich &#038; Rosati, Professional Corporation</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of Ernst &#038; Young LLP, Independent Auditors</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of KPMG LLP, Independent Auditors</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">23.3</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Consent of Counsel (Contained in Exhibit&nbsp;5.1)</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="right"><FONT size="2">24.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top"><FONT size="2">
Power of Attorney (see page II-4)</FONT></TD>
</TR>
</TABLE>
</CENTER>


<P align="center"><FONT size="2">&nbsp;</FONT>



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Komag Incorporated, S-8
Table of Contents
As filed with the Securities and
Exchange Commission on July 23, 2003
Registration No. 333-__________
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
Under
THE SECURITIES ACT OF 1933
KOMAG, INCORPORATED
(Exact name of registrant as specified in its charter)
Delaware
94-2914864
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer Identification No.)
1710 Automation Parkway
San Jose, California 95131
(Address of Principal Executive Offices)
Amended and Restated 2002 Qualified Stock Plan
Amended and Restated 2002 Employee Stock Purchase Plan
(Full title of the plans)
Thian Hoo Tan
Chief Executive Officer
1710 Automation Parkway
San Jose, California 95131
(408) 576-2000
(Name, address and telephone number of agent for service)
Copy to:
Page Mailliard, Esq.
Wilson Sonsini Goodrich & Rosati
Professional Corporation
650 Page Mill Road
Palo Alto, CA 94304
(650) 493-9300
CALCULATION OF REGISTRATION FEE
Proposed
Proposed
Title of
Maximum
Maximum
Amount
Securities
Amount
Offering
Aggregate
of
to be
to be
Price Per
Offering
Registration
Registered (1)
Registered
Share(2)
Price
Fee
Common Stock, $0.01 par value,
issuable pursuant to Amended and Restated 2002
Qualified Stock Plan
450,000 shares
$
12.70
$
5,715,000
$
462.34
Common Stock, $0.01 par value,
issuable pursuant to Amended and Restated 2002
Employee Stock Purchase Plan
300,000 shares
$
12.70
$
3,810,000
$
308.23
TOTAL
750,000 shares
—
$
9,525,000
$
770.57
(1)
This Registration Statement shall also cover any additional shares of Common Stock which
become issuable under the Registrant's Amended and Restated 2002 Qualified Stock Plan, (the "Plan") and the
Registrant's Amended and Restated 2002 Employee Stock Purchase Plan (the "ESPP") by reason of any stock dividend,
stock split, recapitalization or any other similar transaction effected without the Registrant's
receipt of consideration which results in an increase in the number of outstanding shares of the
Registrant's Common Stock.
(2)
The Proposed Maximum Offering Price Per Share was estimated in part pursuant to Rule 457(h)
under the Securities Act, and, in part, pursuant to Rule 457(c) under the Securities Act. With
respect to 450,000 shares which are subject to outstanding options to purchase Common Stock
under the Plan and with respect to 300,000 shares of Common Stock available for future grant
under the ESPP, the Proposed Maximum Offering Price Per Share was estimated pursuant to Rule
457(c) whereby the per share price was determined by reference to the average of the high and
low prices for the Common Stock as reported by The Nasdaq National Market on July 17, 2003,
which average was $12.70.
TABLE OF CONTENTS
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
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
EXHIBIT 4.1
EXHIBIT 4.2
EXHIBIT 5.1
EXHIBIT 23.1
EXHIBIT 23.2
Table of Contents
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents and information previously filed with the
Securities and Exchange Commission by Komag, Incorporated ("Komag") are hereby
incorporated by reference into this Registration Statement and, pursuant to
Rule 428 promulgated under the Securities Act of 1933, as amended, into the
Prospectuses relating to this Registration Statement:
(1)
Komag's Form 10-K Annual Report for the fiscal year ended
December 29, 2002, and Quarterly Report on Form 10-Q for the
quarter ended March 30, 2003.
(2)
The registration statement on Form S-8 (SEC File No.
333-101125) filed on November 12, 2002, filed under the Securities
Act of 1933.
All documents subsequently filed by Komag pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, prior
to the filing of a post-effective amendment which indicates that all securities
offered have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference in this registration
statement and to be part hereof from the date of filing 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.
Komag's Certificate of Incorporation limits the liability of directors to
the maximum extent permitted by Delaware law. Delaware law provides that
directors of a company will not be personally liable for monetary damages for
breach of their fiduciary duties as directors, except for liability (i) for any
breach of their duty of loyalty to the company or its stockholders, (ii) for
acts or omissions not in good faith or which involve intentional misconduct or
a knowing violation of law, (iii) for unlawful payments of dividends or
unlawful stock repurchases or redemptions as provided in Section 174 of the
Delaware General Corporation Law, or (iv) for any transaction from which the
director derived an improper personal benefit.
Komag's Bylaws provide that Komag shall indemnify its officers and
directors and may indemnify its employees and other agents to the fullest
extent permitted by law. Komag believes that indemnification under its Bylaws
covers at least negligence and gross negligence on the part of indemnified
parties. Komag's Bylaws also permit it to secure insurance on behalf of any
officer, director, employee or other agent for any liability arising out of his
or her actions in such capacity, regardless of whether the provisions of the
General Corporation Law of Delaware would permit indemnification.
Komag has entered into agreements to indemnify its directors and officers,
in addition to the indemnification provided for under Delaware law, and in
Komag's Certificate of Incorporation and Bylaws. These agreements, among other
things, indemnify Komag's directors and officers for certain expenses
(including attorneys' fees), judgments, fines and settlement amounts incurred
by any such person in any action or proceeding, including any action by or in
the right of Komag, arising out of such person's services as a director or
officer of Komag, any subsidiary of Komag, or any other company or enterprise
to which the person provides services at the request of Komag. Komag believes
that these provisions and agreements are necessary to attract and retain
qualified persons as directors and officers.
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Table of Contents
The limited liability and indemnification provisions in our Certificate of
Incorporation and Bylaws may discourage stockholders from bringing a lawsuit
against our directors for breach of their fiduciary duty and may reduce the
likelihood of derivative litigation against our directors and officers, even
though a derivative action, if successful, might otherwise benefit us and our
stockholders. Moreover, a stockholder's investment in us may be adversely
affected to the extent we pay the costs of settlement or damage awards against
our directors and officers under these indemnification provisions.
Item 7. Exemption from Registration Claimed.
Not applicable.
Item 8. Exhibits.
Exhibit
Number
4.1
Amended and Restated 2002 Qualified Stock Plan
4.2
Amended and Restated 2002 Qualified Employee Stock Purchase Plan
5.1
Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation
23.1
Consent of Ernst & Young LLP, Independent Auditors
23.2
Consent of KPMG LLP, Independent Auditors
23.3
Consent of Counsel (Contained in Exhibit 5.1)
24.1
Power of Attorney (see page II-4)
Item 9. Undertakings.
(1)
Komag hereby undertakes:
(a)
To file, during any period in which offers or sales
are being made, a post-effective amendment to this registration
statement 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.
(b)
That, for the purpose of determining any liability
under the Securities Act of 1933, as amended, 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.
(c)
To remove from registration by means of
post-effective amendment any of the securities being registered
which remain unsold at the termination of the offering.
(2)
Komag hereby undertakes that, for purposes of determining
any liability under the Securities Act 1933, as amended, each
filing of Komag's annual report pursuant to Section 13(a) or
Section 15(d) of the Securities Exchange Act of 1934, as amended,
(and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act of
1934) that is incorporated by reference in the registration
statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of
such securities at that time shall be deemed to be the initial bona
fide offering thereof.
(3)
Insofar as indemnification for liabilities arising under
the Securities Act of 1933, as amended, may be permitted to
directors, officers and controlling persons of Komag pursuant to
the Delaware General
II-2
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Corporation Law, the Certificate of Incorporation or the Bylaws of
Komag, indemnification agreements entered into between Komag and its
officers and directors, or otherwise, Komag has been advised that in
the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the
Securities Act of 1933, as amended, and is, therefore, unenforceable.
In the event that a claim for indemnification against such
liabilities (other than the payment by Komag of expenses incurred or
paid by a director, officer or controlling person 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 hereunder, Komag 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 of 1933, as amended, and will be
governed by the final adjudication of such issue.
II-3
Table of Contents
SIGNATURES
Pursuant to the requirements of the Securities Act 1933, as amended, Komag
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 this 23rd day of
July 2003.
KOMAG, INCORPORATED
By:
/s/ Thian Hoo Tan
Thian Hoo Tan
Chief Executive Officer and Chairman
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each such person whose signature
appears below constitutes and appoints each of Thian Hoo Tan and Kathleen A.
Bayless, as his attorney-in-fact, with full power of substitution, for him in
any and all capacities, to sign any and all amendments to this registration
statement on Form S-8 (including post-effective amendments), 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 substitute or substitutes, may do or
cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
Signature
Capacity
Date
/s/ Thian Hoo Tan
Thian Hoo Tan
Chief Executive Officer and Chairman
July 23, 2003
/s/ Kathleen A. Bayless
Kathleen A. Bayless
Vice President and Chief Financial Officer
July 23, 2003
/s/ Paul Brahe
Paul Brahe
Director
July 23, 2003
/s/ Chris A. Eyre
Chris A. Eyre
Director
July 23, 2003
/s/ Neil S. Subin
Neil S. Subin
Director
July 23, 2003
/s/ Kenneth R. Swimm
Kenneth R. Swimm
Director
July 23, 2003
/s/ David G. Takata
David G. Takata
Director
July 23, 2003
/s/ Harry Van Wickle
Harry Van Wickle
Director
July 23, 2003
/s/ Raymond H. Wechsler
Raymond H. Wechsler
Director
July 23, 2003
/s/ Michael Lee Workman
Michael Lee Workman
Director
July 23, 2003
II-4
Table of Contents
EXHIBIT INDEX
Exhibit
Number
Description
4.1
Amended and Restated 2002 Qualified Stock Plan
4.2
Amended and Restated 2002 Qualified Employee Stock Purchase Plan
5.1
Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation
23.1
Consent of Ernst & Young LLP, Independent Auditors
23.2
Consent of KPMG LLP, Independent Auditors
23.3
Consent of Counsel (Contained in Exhibit 5.1)
24.1
Power of Attorney (see page II-4)