Western Midstream Announces Availability of 2022 Schedule K-3

Western Midstream Partners, LP (NYSE: WES) today announced that its 2022 Schedule K-3 reflecting items of international tax relevance is available online. Unitholders requiring this information may access their Schedules K-3 at www.taxpackagesupport.com/westernmidstream.

A limited number of unitholders (primarily foreign unitholders, unitholders computing a foreign tax credit on their tax return and certain corporate and/or partnership unitholders) may need the detailed information disclosed on Schedule K-3 for their specific reporting requirements. To the extent Schedule K-3 is applicable to your federal income tax return filing needs, we encourage you to review the information contained on this form and refer to the appropriate federal laws and guidance or consult with your tax advisor.

To receive an electronic copy of your Schedule K-3 via email, unitholders may call Tax Package Support toll free at 833-618-2034.

ABOUT WESTERN MIDSTREAM

Western Midstream Partners, LP (“WES”) is a Delaware master limited partnership formed to acquire, own, develop, and operate midstream assets. With midstream assets located in the Rocky Mountains, North-central Pennsylvania, Texas, and New Mexico, WES is engaged in the business of gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, NGLs, and crude oil; and gathering and disposing of produced water for its customers. In addition, in its capacity as a processor of natural gas, WES also buys and sells natural gas, NGLs, and condensate on behalf of itself and as an agent for its customers under certain of its contracts.

For more information about Western Midstream Partners, LP and Western Midstream Flash Feed updates, please visit www.westernmidstream.com.

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WESTERN MIDSTREAM CONTACTS Daniel Jenkins Director, Investor Relations [e-mail] 866-512-3523

Rhianna Disch Manager, Investor Relations [e-mail] 866-512-3523