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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
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SCHEDULE 13G
(RULE 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13D-1(b) (c), AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)
(AMENDMENT NO. 1)(1)
KOMAG, INCORPORATED
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(Name of Issuer)
Common Stock, Par Value $.01 Per Share
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(Title of Class of Securities)
500453-10-5
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(CUSIP Number)
September 14, 2000
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ] Rule 13d-1(d)
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(1) The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
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CUSIP No. 500453-10-5 13G Page 2 of 5 Pages
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1 NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Western Digital Corporation (95-2647125)
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2 CHECK APPROPRIATE BOX IF A MEMBER OF A GROUP* (a)[ ]
(b)[ ]
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3 SEC USE ONLY
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4 CITIZEN OR PLACE OF ORGANIZATION
Delaware
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5 SOLE VOTING POWER
5,930,722
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NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 0
OWNED BY ----------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON WITH 5,930,722
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8 SHARED DISPOSITIVE POWER
0
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
5,930,722
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ]
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
8.9%
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12 TYPE OF REPORTING PERSON
CO
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*SEE INSTRUCTIONS BEFORE FILLING OUT!
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ITEM 1(a). NAME OF ISSUER
Komag, Incorporated
ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
1704 Automation Parkway, San Jose, California 95131
ITEM 2(a). NAME OF PERSON FILING
Western Digital Corporation
ITEM 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE
8105 Irvine Center Drive, Irvine, California 92618
ITEM 2(c). CITIZENSHIP
Delaware
ITEM 2(d). TITLE OF CLASS OF SECURITIES
Common Stock, Par Value $.01 Per Share
ITEM 2(e). CUSIP NUMBER
500453-10-5
ITEM 3. This statement is filed pursuant to Rule 13d-1(c)
ITEM 4. OWNERSHIP
(a) Amount Beneficially Owned: 5,930,722
(b) Percent of Class: 8.9%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
5,930,722
(ii) shared power to vote or to direct the
vote: 0
(iii) sole power to dispose or to direct the
disposition of: 5,930,722
(iv) shared power to dispose or to direct the
disposition of: 0
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ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
Not Applicable
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
PERSON
Not Applicable
ITEM 7. IDENTIFICATION AND CLARIFICATION OF THE SUBSIDIARY WHICH
ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY
Not Applicable
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
Not Applicable
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
Not Applicable
ITEM 10. CERTIFICATION
By signing below I certify that, to the best of my
knowledge and belief, the securities referred to above were
not acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in
connection with or as a participant in any transaction
having that purpose or effect.
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SIGNATURE
After reasonable inquiry and to the best of the undersigned's knowledge
and belief, the undersigned certifies that the information set forth in the this
statement is true, complete and correct.
DATED: 11-2-00
By: /s/ Raymond M. Bukaty
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Raymond M. Bukaty
Vice President, Corporate Law
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