SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
ANADARKO PETROLEUM CORP

(Last) (First) (Middle)
1201 LAKE ROBBINS DRIVE

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
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)
3. Date of Earliest Transaction (Month/Day/Year)
03/14/2016
4. If Amendment, Date of 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
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 03/14/2016 P 1,253,761 A $29.91 51,307,585 I See footnotes(1)(2)(3)
Common Units representing limited partner interests 03/14/2016 P 835,841 A $29.91 52,143,426 I See footnotes(1)(2)(3)
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 Securities Underlying Derivative Security (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: 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
1. Name and Address of Reporting Person*
ANADARKO PETROLEUM CORP

(Last) (First) (Middle)
1201 LAKE ROBBINS DRIVE

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
1. Name and Address of Reporting Person*
WESTERN GAS RESOURCES INC

(Last) (First) (Middle)
1201 LAKE ROBBINS DR.

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Western Gas Equity Partners, LP

(Last) (First) (Middle)
1201 LAKE ROBBINS DR.

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Western Gas Equity Holdings, LLC

(Last) (First) (Middle)
1201 LAKE ROBBINS DR.

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
1. Name and Address of Reporting Person*
ANADARKO MARCELLUS MIDSTREAM, L.L.C.

(Last) (First) (Middle)
1201 LAKE ROBBINS DR.

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
1. Name and Address of Reporting Person*
APC Midstream Holdings, LLC

(Last) (First) (Middle)
1201 LAKE ROBBINS DR.

(Street)
THE WOODLANDS TX 77380

(City) (State) (Zip)
Explanation of Responses:
1. On March 14, 2016, as partial consideration for an acquisition of assets from Anadarko Petroleum Corporation ("Anadarko"), Western Gas Partners, LP ("WES") issued 1,253,761 common units to an indirect wholly owned subsidiary of Anadarko, APC Midstream Holdings, LLC ("AMH"), at $29.91 per unit, pursuant to a Contribution Agreement dated as of February 24, 2016. Separately, Western Gas Partners, LP issued 835,841 common units to Western Gas Equity Partners, LP at $29.91 per unit, pursuant to a Common Unit Purchase Agreement dated February 24, 2016.
2. As of March 14, 2016, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 11,735,446 Class C units, (ii) Western Gas Resources, Inc. ("WGR") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC ("WGP GP"), the general partner of WGP, (B) 87.3% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation ("Anadarko") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH.
3. As of March 14, 2016, (i) AMM owns 449,129 WES common units, (ii) Kerr-McGee Worldwide Corporation ("KWC") owns 100% of the membership interests in AMM, (iii) Kerr-McGee Corporation ("KMG") owns 100% of KWC, and (iv) Anadarko owns 100% of KMG. Accordingly, KWC, KMG and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMM.
Remarks:
/s/ Philip H. Peacock, Authorized Signatory of Anadarko Petroleum Corporation 03/16/2016
/s/ Philip H. Peacock, Authorized Signatory of Western Gas Resources, Inc. 03/16/2016
/s/ Philip H. Peacock, Vice President, General Counsel and Corporate Secretary of the general partner of Western Gas Equity Partners, LP 03/16/2016
/s/ Philip H. Peacock, Vice President, General Counsel and Corporate Secretary of Western Gas Equity Holdings, LLC 03/16/2016
/s/ Philip H. Peacock, Authorized Signatory for Anadarko Marcellus Midstream, L.L.C. 03/16/2016
/s/ Philip H. Peacock, Authorized Signatory for APC Midstream Holdings, LLC 03/16/2016
** Signature of Reporting Person Date
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