Tax Withholding Notice To Brokers And Nominees Of Non-U.S. Unitholders

HOUSTON, May 10, 2017

Note regarding Non-United States Investors: This is intended to be notice under Treasury Regulation Section 1.1446-4(b) with respect to the quarterly distributions to be paid by Western Gas Partners, LP on May 12, 2017, and Western Gas Equity Partners, LP on May 22, 2017, in each case to holders of record as of May 1, 2017. Brokers and nominees should treat one hundred percent (100.0%) of Western Gas Partners, LP's and Western Gas Equity Partners, LP's distributions to non-U.S. investors as being attributable to income that is effectively connected with a United States trade or business. Accordingly, Western Gas Partners, LP's and Western Gas Equity Partners, LP's distributions to non-U.S. investors are subject to federal income tax withholding at the highest applicable effective tax rate.

Western Gas Partners, LP ("WES") is a growth-oriented Delaware master limited partnership formed by Anadarko Petroleum Corporation to acquire, own, develop and operate midstream energy assets. With midstream assets located in the Rocky Mountains, North-central Pennsylvania and Texas, WES is engaged in the business of gathering, compressing, treating, processing and transporting natural gas, and gathering, stabilizing and transporting condensate, natural gas liquids and crude oil for Anadarko, as well as for other producers and customers.

Western Gas Equity Partners, LP ("WGP") is a Delaware master limited partnership formed by Anadarko to own the following types of interests in WES: (i) the general partner interest and all of the incentive distribution rights in WES, both owned through WGP's 100% ownership of WES's general partner, and (ii) a significant limited partner interest in WES.

For more information about Western Gas Partners, LP, Western Gas Equity Partners, LP, and Western Gas Flash Feed updates, please visit www.westerngas.com.

WESTERN GAS PARTNERS, LP and WESTERN GAS EQUITY PARTNERS, LP CONTACT:

Jonathon E. VandenBrand
Director, Investor Relations
jon.vandenbrand@anadarko.com
832.636.6000