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Exhibit 10.13
 KOMAG INCORPORATED
 AMENDMENT TO STOCK OPTION AGREEMENTS
 Amendment Participant Company
 WHEREAS Option Options Shares Plan Agreements
 WHEREAS
 WHEREAS
 WHEREAS Board
 NOW, THEREFORE,
 Vesting upon Commencement of Employment by Participants Successor
 Stock Option Agreement
 No Guarantee of Continued Service




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Assignment successor
 Entire Agreement
 Counterparts
 Headings
 Governing Law
 IN WITNESS WHEREOF
  KOMAG
INCORPORATEDBy:Its:
 
   -2-




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KOMAG INCORPORATED
AMENDMENT TO RESTRICTED STOCK PURCHASE AGREEMENTS
 Amendment Participant Company
 WHEREAS Restricted Stock Award Restricted Stock Awards Plan Agreements
 WHEREAS
 WHEREAS
 WHEREAS Board
 NOW, THEREFORE,
 Vesting upon Commencement of Employment by Participants Successor
 Restricted Stock Purchase Agreements
 No Guarantee of Continued Service




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Assignment successor
 Entire Agreement
 Counterparts
 Headings
 Governing Law
 IN WITNESS WHEREOF
  KOMAG, INCORPORATEDBy:Its:
 
   -2-




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KOMAG INCORPORATED
AMENDED AND RESTATED 2002 QUALIFIED STOCK PLAN   NOTICE OF GRANT OF STOCK PURCHASE RIGHT
  
  Date of Grant
    
    February 15, 2006Price Per Share
    
    $0.01Total Number of Shares Subject
to This Stock Purchase Right
    
    35,000Expiration Date:
    
    March 17, 2006Vesting Schedule:
    
    Subject to any vesting acceleration provisions set forth in the Plan and
the attached Restricted Stock Purchase Agreement, one-third (1/3rd) of the
Shares shall vest on each of the first three (3) anniversaries of the Date of Grant,
subject to Purchaser continuing to be a Service Provider through such dates.
 Exhibit A-1




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EXHIBIT A-1   KOMAG INCORPORATED
AMENDED AND RESTATED 2002 QUALIFIED STOCK PLAN   RESTRICTED STOCK PURCHASE AGREEMENT
     Sale of Stock
 Payment of Purchase Price
 Repurchase Option




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Release of Shares From Repurchase Option.
 rd
   Restriction on Transfer
  Escrow of Shares
  -2-




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Exhibit A-2
      Legends
 -3-




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Withholding of Taxes
 Tax Consequences Exhibit A-3
  General Provisions
   -4-




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-5-




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EXHIBIT A-2
 ASSIGNMENT SEPARATE FROM CERTIFICATE
    
 
   INSTRUCTIONS:




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EXHIBIT A-3
 ELECTION UNDER SECTION 83(b)
OF THE INTERNAL REVENUE CODE OF 1986
  1.
    
    The name, address, taxpayer identification number and taxable year of the undersigned are
as follows:
 NAME:
    
    TAXPAYER:
    
    SPOUSE:ADDRESS:IDENTIFICATION NO.:
    
    TAXPAYER:
    
    SPOUSE:TAXABLE YEAR:
 2.
    
    The property with respect to which the election is made is described as follows:____________ shares (the Shares) of the Common Stock of Komag Incorporated (the Company).3.
    
    The date on which the property was transferred is: ____________, ______.4.
    
    The property is subject to the following restrictions:The Shares may be repurchased by the Company, or its assignee, upon certain events. This
right lapses with regard to a portion of the Shares based on the continued performance of
services by the taxpayer over time.5.
    
    The fair market value at the time of transfer, determined without regard to any restriction
other than a restriction which by its terms will never lapse, of such property is:
$____________.6.
    
    The amount (if any) paid for such property is: $____________.
  The undersigned understands that the foregoing election may not be revoked except with the
consent of the Commissioner




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CONSULTING SERVICES AGREEMENT
 Agreement Thian Hoo Tan Consultant Komag Company
 Resignation; Consulting Term
 New CEO
Employment Date
 later of Section 11 Consulting Term
 Independent Contractor Status Section 10
 Warranties




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TH Tan Consulting Agreement
Page 2 of 7
 Services Services Exhibit A
 Employment of Assistants
  Obligations of Consultant
 Exhibit A
   Reporting to Komags Facilities
 Compensation




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TH Tan Consulting Agreement
Page 3 of 7
 Exhibit A Section 8
 Exhibit B provided
 provided Exhibit B
 Confidential Information
 Proprietary Information




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TH Tan Consulting Agreement
Page 4 of 7
  Company Documents
 Restricted
Period
 Inventions
 Rights




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TH Tan Consulting Agreement
Page 5 of 7
    Non-Compete
 Survival
 Enforceability of Agreement
 Assignment
 Arbitration




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TH Tan Consulting Agreement
Page 6 of 7
  Entire Understanding
 Notices
 a.
    
    To Komag:Komag, Incorporated
ATTN: Human Resources
1710 Automation Parkway
San Jose, CA 95131b.
    
    To Consultant:Thian Hoo Tan
21925 Arrowhead Lane
Saratoga, CA 95070
 Attorneys Fees
 Severability




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TH Tan Consulting Agreement
Page 7 of 7
  CONSULTANTDated:     _______________, 2006.
    By:Name:
    Thian Hoo TanKOMAG, INCORPORATEDDated: _______________, 2006.
    By:Name:Title:




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EXHIBIT A
 DUTIES OF INDEPENDENT CONTRACTOR
 AND PAYMENT SCHEDULE FOR COMPLETION OF SAME
   Consultant Name:
    
    Tan
    
    Thian
    
    Hoo(Last)
    
    (First)
    
    (MI)Address:
    
    21925 Arrowhead Lane
Saratoga, CA 95070Mgr/Supv:
    
    
    
    Dept. Name/Number:
 Date:SS#:G&A Executive Mgmt. / 19506
    AnticipatedCompletionScope of Work
    
    Dates Consultant will provide consulting and advisory services relating to matters and to projects or work in process that had been within the
Consultants areas of responsibility while he served as Chief Executive Officer of the Company, including such appropriate tasks as the
Companys Board of Directors (the Board) may request as necessary and appropriate to assist the individual who becomes the Companys
Chief Executive Officer (CEO) transition into that position. The services which the Consultant will provide hereunder may include,
without limitation, introducing the CEO to the Companys major clients and business people with whom the Consultant had business
relationships relating to the Companys business while Consultant served as CEO.
    
    later of 3 months from
effective date or
January 2, 2007


Retainer:
    
    $10,000.00 per full calendar month for
    
    Anticipated Contract Length:
    
    Up to 3 monthsfour (4) days of services per month*.Additional days to be billed at $2,500.00 per day.***A month would be completed on the same day of any subsequent
month on which the Consultant commences providing services as
a consultant.**A day of service would require at least8 hoursof services
to the Company during such day.


Expense Reimbursement:
    
    The Consultant shall be reimbursed for the usual and customary expenses associated with conducting company
related business.


Billing Terms:
    
    Net 15




Approvals:
 Manager/SupervisorBOD, non-executive Chairman
    
    DateHuman Resources
    
    Date
 DateCEO
    
    Date




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EXHIBIT B




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Exhibit B   RELEASE AGREEMENT
 Agreement Tan Komag Company Parties Consulting Agreement
 Confidential Information
 Payment of Salary and Benefits
 Release of Claims Releasees




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Acknowledgement of Waiver of Claims Under ADEA ADEA
 prior
     Civil Code Section 1542
 A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR
SUSPECT TO EXIST IN HIS FAVOR AT THE




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TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY AFFECTED HIS SETTLEMENT WITH THE DEBTOR.
  No Pending or Future Lawsuits
 Confidentiality Severance Information
 Entire Agreement
 No Waiver
 No Oral Modification
 Governing Law
 Effective Date
 Counterparts




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Voluntary Execution of Agreement




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THIAN HOO TANDated:
    
    
    By:Name:
    Thian Hoo TanKOMAG, INCORPORATEDDated:
    
    
    By:Name:Title: