FORM 10-Q (Mark One) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to WESTERN MIDSTREAM PARTNERS, LP WESTERN MIDSTREAM OPERATING, LP (Exact name of registrant as specified in its charter) | | State or other jurisdiction of | | ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) WESTERN MIDSTREAM PARTNERS, LP WESTERN MIDSTREAM OPERATING, LP (Exact name of registrant as specified in its charter) | | | State or other jurisdiction of | | | | --- | --- | --- | --- | --- | | | Commission file number: | incorporation or organization: | | I.R.S. Employer Identification No.: | | Western Midstream Partners, LP | 001-35753 | Delaware | | 46-0967367 | | Western Midstream Operating, LP | 001-34046 | De ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 (Address of principal executive offices) (Zip Code) (832) 636-6000 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35753 WESTERN GAS EQUITY PARTNERS, LP (Exact name of registrant as s ...