Western Midstream Operating, LP

Management is responsible for establishing and maintaining adequate internal control over financial reporting. The Partnership’s and WES Operating’s internal control system was designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of the Partnership’s and WES Operating’s internal control over financial reporting as of December 31, 2025. This assessment was based on criteria established in the Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on our assessment using the COSO criteria, we concluded the Partnership’s and WES Operating’s internal control over financial reporting was effective as of December 31, 2025. The Partnership acquired Aris Water Solutions, Inc. during 2025 and management excluded from its assessment of the effectiveness of the Partnership’s internal control over financial reporting as of December 31, 2025, Aris Water Solutions, Inc.’s internal control over financial reporting associated with total assets of $2.3 billion and total revenues of $116.4 million included in the consolidated financial statements of Western Midstream Partners, LP and subsidiaries as of and for the year ended December 31, 2025.

KPMG LLP, the Partnership’s independent registered public accounting firm, has issued an attestation report on the effectiveness of the Partnership’s internal control over financial reporting as of December 31, 2025.

WESTERN MIDSTREAM PARTNERS, LP

/s/ Oscar K. Brown

Oscar K. BrownPresident and Chief Executive OfficerWestern Midstream Holdings, LLC(as general partner of Western Midstream Partners, LP)

/s/ Kristen S. Shults

Kristen S. ShultsSenior Vice President and Chief Financial OfficerWestern Midstream Holdings, LLC(as general partner of Western Midstream Partners, LP)

WESTERN MIDSTREAM OPERATING, LP

/s/ Oscar K. Brown

Oscar K. BrownPresident and Chief Executive OfficerWestern Midstream Operating GP, LLC(as general partner of Western Midstream Operating, LP)

/s/ Kristen S. Shults

Kristen S. ShultsSenior Vice President and Chief Financial OfficerWestern Midstream Operating GP, LLC(as general partner of Western Midstream Operating, LP)