Amendment No.10 to Schedule 13G

-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, A2mVFj/jAE1wowxN3SDviBZ3Jnu2Cp+YITMBsmMXp0KB9DaF+TC4FoEjZjKXTPi+ 9+fReDx8xAqGGni7HtA1iA== 0001193125-08-025604.txt : 20080211 0001193125-08-025604.hdr.sgml : 20080211 20080211150337 ACCESSION NUMBER: 0001193125-08-025604 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20080211 DATE AS OF CHANGE: 20080211 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: DRIL-QUIP INC CENTRAL INDEX KEY: 0001042893 STANDARD INDUSTRIAL CLASSIFICATION: OIL & GAS FILED MACHINERY & EQUIPMENT [3533] IRS NUMBER: 742162088 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-53041 FILM NUMBER: 08592986 BUSINESS ADDRESS: STREET 1: 13550 HEMPSTEAD HIGHWAY CITY: HOUSTON STATE: TX ZIP: 77040 BUSINESS PHONE: 7139397711 MAIL ADDRESS: STREET 1: 180 EAST FIFTH STREET CITY: HOUSTON STATE: TX ZIP: 77040 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: WALKER J MIKE CENTRAL INDEX KEY: 0001054902 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 13550 HEMPSTEAD HIGHWAY CITY: HOUSTON STATE: TX ZIP: 77040 BUSINESS PHONE: 7139397711 SC 13G/A 1 dsc13ga.htm AMENDMENT NO.10 TO SCHEDULE 13G 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

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.



	(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

Explanation of Responses:

(1)

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

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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