Amendment No.10 to Schedule 13G

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

SCHEDULE 13G

 

Under the Securities Exchange Act of 1934

(Amendment No. 10)*

 

 

 

 

Dril-Quip, Inc.

(Name of Issuer)

 

 

Common Stock

(Title of Class of Securities)

 

 

262037 10 4

(CUSIP Number)

 

 

December 31, 2007

(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)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

 

 

*   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 the disclosures provided in a prior cover page.

The information required in 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).


CUSIP No.   262037 10 4

 

  1.  

NAMES OF REPORTING PERSONS.

I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only).

 

            J. Mike Walker

   
  2.  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨

(b)  ¨

   
  3.  

SEC USE ONLY

 

   
  4.  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

            United States of America

   

 

NUMBER OF  

SHARES  

BENEFICIALLY  

OWNED BY  

EACH  

REPORTING  

PERSON  

WITH:  

 

 

  5.    Sole Voting Power

 

            4,177,345

 

  6.    Shared Voting Power

 

            None

 

  7.    Sole Dispositive Power

 

            4,177,345

 

  8.    Shared Dispositive Power

 

            None

  9.  

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

            4,177,345

   
10.  

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

 

            ¨

   
11.  

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

            10.12%

   
12.  

TYPE OF REPORTING PERSON

 

            IN

   

 

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Item 1.

 

Item 1(a)

   Name of Issuer:    Dril-Quip, Inc.   

Item 1(b)

   Address of Issuer’s    13550 Hempstead Highway   
   Principal Executive Offices:    Houston, Texas 77040   
        
Item 2.         

Item 2(a)

   Name of Person Filing:    J. Mike Walker   

Item 2(b)

   Address of Principal    13550 Hempstead Highway   
   Business Office:    Houston, Texas 77040   

Item 2(c)

   Citizenship:    U.S.   

Item 2(d)

   Title of Class of Securities:    Common Stock   

Item 2(e)

   CUSIP Number:    262037 10 4   
        
Item 3.    If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a:   
   (a)      ¨    Broker or dealer registered under section 15 of the Act.   
   (b)      ¨    Bank as defined in section 3(a)(6) of the Act.   
   (c)      ¨    Insurance company as defined in section 3(a)(19) of the Act.   
   (d)      ¨    Investment company registered under section 8 of the Investment Company Act of 1940.   
   (e)      ¨    Investment adviser in accordance with §240.13d-1(b)(1)(ii)(E).   
   (f)      ¨    Employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F).   
   (g)      ¨    Parent holding company or control person, in accordance with § 240.13d-1(b)(ii)(G).   
   (h)      ¨    Savings Associations as defined in Section 3(b) of the Federal Deposit Insurance Act.   
   (i)      ¨    Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940.   

 

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   (j)      ¨    Group, in accordance with § 240.13d-1(b)(1)(ii)(J).   
             
Item 4.    Ownership      

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

  
   (a)      Amount Beneficially Owned:    4,177,345(1)   
   (b)      Percent of Class:    10.12%(1)   
   (c)      Number of shares as to which such person has:      
        (i)    Sole power to vote or to direct the vote:    4,177,345(1)   
        (ii)    Shared power to vote or to direct the vote:    None   
        (iii)    Sole power to dispose or to direct the disposition of:    4,177,345(1)   
        (iv)    Shared power to dispose or to direct the disposition:    None   
                
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 Classification 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   
   Not Applicable   

 

 

 

 

 

 

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Explanation of Responses:

 

  (1) Includes 468,045 shares of Common Stock subject to exercisable options.

 

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SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 11, 2008

 

/S/    J. MIKE WALKER        
J. Mike Walker

 

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