Western Midstream Partners, LP

Item 5. Other Information

Insider Trading Arrangements

Rule 10b5-1 under the Exchange Act provides an affirmative defense that enables prearranged transactions in securities in a manner that avoids concerns about initiating transactions at a future date while possibly in possession of material nonpublic information. Our Insider Trading Policy permits our directors and executive officers to enter into trading plans designed to comply with Rule 10b5-1. During the three months ended March 31, 2025, none of our executive officers or directors adopted or terminated a Rule 10b5-1 trading arrangement (as defined in Item 408(a)(1)(i) of Regulation S-K) or adopted or terminated a non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K).

Appointment of Independent Director

On May 4, 2025, Robert G. Phillips was appointed as a member of the Board. Mr. Phillips will also serve on the Special Committee and Compensation Committee of the Board.

The Board has determined that Mr. Phillips qualifies as an independent director under the applicable listing standards of the New York Stock Exchange and the Securities Exchange Act of 1934. Mr. Phillips’ compensation as a member of the Board will be consistent with the compensation of other independent members of the Board, which is described under the section titled “Executive Compensation—Director Compensation” of the Partnership’s Annual Report on Form 10-K filed with the SEC on February 26, 2025, except that his cash compensation for 2025 will be prorated based on the term of his service.

There are no arrangements or understandings between Mr. Phillips and any other person pursuant to which he was selected to be a director. There are no related person transactions regarding Mr. Phillips that require disclosure under Item 404(a) of Regulation S-K.

Mr. Phillips will have rights to indemnification by the Partnership and the General Partner pursuant to the organizational documents of the Partnership and the General Partner, and an Indemnification Agreement, the form of which has been previously filed by the Partnership.