FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * ANADARKO PETROLEUM CORP   2. Issuer Name and Ticker or Trading Symbol Western Gas Partners LP [WES] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1201 LAKE ROBBINS DR. 3. Date of Earliest Transaction (Month/Day/Year) 06/11/2008 (Street) THE WOODLANDS, TX 77380 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Units representing limited partner interests 06/11/2008   A   751,625 A $ 16.5 5,725,431 (1) (2) I See footnotes (1) and (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ANADARKO PETROLEUM CORP 1201 LAKE ROBBINS DR. THE WOODLANDS, TX 77380		X
WESTERN GAS RESOURCES INC 1201 LAKE ROBBINS DR. THE WOODLANDS, TX 77380		X
WGR Holdings LLC 1201 LAKE ROBBINS DR. THE WOODLANDS, TX 77380		X

Signatures

/s/ David L. Siddall, Assistant Secretary of Anadarko Petroleum Corporation		06/11/2008
**Signature of Reporting Person		Date
/s/ David L. Siddall, Assistant Secretary of Western Gas Resources, Inc.		06/11/2008
**Signature of Reporting Person		Date
/s/ David L. Siddall, Assistant Secretary of WGR Holdings, LLC		06/11/2008
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	As of June 11, 2008, (i) WGR Holdings, LLC ("WGR Holdings") owns all of the membership interests in the General Partner, (ii) Western Gas Resources, Inc. ("WGR") owns all of the membership interests of WGR Holdings and (iii) Anadarko Petroleum Corp ("Anadarko") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGR Holdings.
(2)	In connection with the closing of the initial public offering of the Issuer (the "Offering"), the Issuer granted the underwriters a 30-day option to purchase up to an additional 2,812,500 Common Units. Pursuant to that certain Contribution Agreement, dated May 14, 2008, upon the earlier to occur of the expiration of the over-allotment option period or the exercise in full of the over-allotment option, WGR Holdings was to be issued a number of additional Common Units equal to the excess, if any, of (x) 2,812,500 over (y) the aggregate number of Common Units, if any, actually purchased by the underwriters pursuant to the exercise of the over-allotment option. On June 11, 2008, the underwriters exercised the over-allotment option in an amount of 2,060,875 common units, and as such 751,625 Common Units were issued to WGR Holdings.

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