Tax Information

Western Midstream Partners, LP K-1 Information

Western Midstream Partners, LP (NYSE: WES) unitholders may access K-1 tax information online at www.taxpackagesupport.com/westernmidstream.

For additional information regarding K-1 information, please contact Tax Package Support at (833) 618-2034.

Western Gas Partners, LP K-1 Information

Investors who held units in Western Gas Partners, LP (formerly traded on the NYSE under the ticker “WES”) prior to February 28, 2019, may access K-1 tax information for January and February of 2019, as well as historical information, online at www.taxpackagesupport.com/westernmidstream.

For additional information regarding K-1 information, please contact Tax Package Support at (833) 618-2034.

Western Gas Equity Partners, LP K-1 Information

Investors who held units in Western Gas Equity Partners, LP (formerly traded on the NYSE under the ticker “WGP”) prior to February 28, 2019, may access current and historical K-1 tax information online at www.taxpackagesupport.com/westernmidstream.

For additional information regarding K-1 information, please contact Tax Package Support at (833) 618-2034.

Western Midstream Partners, LP K-3 Information

Western Midstream Partners, LP 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.

Investor Account Changes and Other Information

Computershare is the transfer agent and registrar for Western Midstream Partners, LP’s common units. Please contact Computershare regarding the following:

• Unitholder registration or change of address requests
• Certificate transfer or lost certificate replacement
• Missing distribution checks

Unitholders may contact Computershare directly at:

-or-

Visit the Computershare website at www.computershare.com.