Ownership Submission
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 *
Arnold Steven D
  2. Issuer Name and Ticker or Trading Symbol
Western Midstream Operating, LP [NONE]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
1201 LAKE ROBBINS DR
3. Date of Earliest Transaction (Month/Day/Year)
02/28/2019
(Street)

THE WOODLANDS, TX 77380
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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 Partnership Interests 02/28/2019   D   37,938 D (1) (2) 0 D  

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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
Phantom Units (3) 02/28/2019   D     2,005 05/08/2019 05/08/2019 Common Units Representig Limited Partnership Interests 2,005 (3) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Arnold Steven D
1201 LAKE ROBBINS DR
THE WOODLANDS, TX 77380
  X      

Signatures

 /s/ Courtney H. Landry by power of atty. for Steven D. Arnold   03/04/2019
**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) Disposition in connection with the merger of a wholly owned subsidiary of Western Gas Equity Partners, LP ("WGP") with Western Gas Partners, LP ("WES"), with WES continuing as the surviving entity and becoming a wholly owned subsidiary of WGP (the "Merger"). On February 27, 2019, the last trading day for the WES common units, the closing price of WES's common units was $49.55 per unit and the closing price of WGP's common units was $32.72 per unit. Each WES common unit outstanding was converted into the right to receive 1.525 WGP common units.
(2) (Continued from footnote 1) As part of the Merger, WES changed its name to "Western Midstream Operating, LP" and its common units, which previously traded on the New York Stock Stock Exchanged ("NYSE") under the "WES" ticker symbol, ceased trading, and WGP changed its name to "Western Midstream Partners, LP" and its common units, which previously traded on the NYSE under the "WGP" ticker symbol, began trading on the NYSE under the "WES" ticker symbol when the market opened on Thursday, February 28, 2019.
(3) In connection with the Merger, Mr. Arnold's grant of 2,005 WES phantom units was converted into a grant of 3,058 WGP phantom units, which reflects the conversion ratio of 1.525 WGP common units for each WES common unit set forth in the Merger transaction document. Each WES phantom unit represented the economic equivalent of one WES common unit that, upon vesting, entitled the holder to receive a WES common unit

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