X0306 4 2016-03-01 0 0001433270 ANTERO RESOURCES Corp AR 0001157334 Warburg Pincus Private Equity VIII, L.P. C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001621224 Warburg Pincus Partners GP LLC C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0000929408 WARBURG PINCUS & CO. C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001239318 KAYE CHARLES R C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001220638 Landy Joseph P. C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001621242 Warburg Pincus Partners, L.P. C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001162870 WARBURG PINCUS LLC C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 Common stock, par value $0.01 per share 2016-03-01 4 S 0 4751186 21.502 D 26533286 D Common stock, par value $0.01 per share 2016-03-01 4 S 0 137716 21.502 D 769080 I See footnotes Common stock, par value $0.01 per share 2016-03-01 4 S 0 13777 21.502 D 76903 I See footnotes This Form 4 is filed on behalf of Warburg Pincus Private Equity VIII, L.P., a Delaware limited partnership ("WP VIII", and together with its two affiliated partnerships, Warburg Pincus Netherlands Private Equity VIII C.V. I, a company formed under the laws of the Netherlands ("WP VIII CV I"), and WP-WPVIII Investors, L.P., a Delaware limited partnership ("WP-WPVIII Investors"), collectively, the "WP VIII Funds"). WP-WPVIII Investors GP L.P., a Delaware limited partnership ("WP-WPVIII GP"), is the general partner of WP-WPVIII Investors. WPP GP LLC, a Delaware limited liability company ("WPP GP"), is the general partner of WP-WPVIII GP. Warburg Pincus Partners, L.P., a Delaware limited partnership ("WP Partners"), is (i) the managing member of WPP GP, and (ii) the general partner of WP VIII and WP VIII CV I. Warburg Pincus Partners GP LLC, a Delaware limited liability company ("WP Partners GP"), is the general partner of WP Partners. Warburg Pincus & Co., a New York general partnership ("WP"), is the managing member of WP Partners GP. Warburg Pincus LLC, a New York limited liability company ("WP LLC"), is the manager of the WP VIII Funds. Charles R. Kaye and Joseph P. Landy are each Managing General Partners of WP and Managing Members and Co-Chief Executive Officers of WP LLC and may be deemed to control the Warburg Pincus Entities (as defined below). Messrs. Kaye and Landy disclaim beneficial ownership of all shares held by the Warburg Pincus Entities. Each of Messrs. Kaye and Landy, together with the WP VIII Funds, WP VIII Investors GP, WPP GP, WP Partners, WP Partners GP, WP and WP LLC are collectively referred to herein as the "Warburg Pincus Entities". Certain affiliates of the Warburg Pincus Entities, Warburg Pincus Private Equity X, L.P., a Delaware limitation partnership ("WP X"), Warburg Pincus X Partners, L.P., a Delaware limited partnership ("WP X Partners"), and Warburg Pincus Private Equity X O&G, L.P., a Delaware limited partnership ("WP X O&G"), also hold common stock ("Common Stock") of Antero Resources Corporation (the "Issuer") and report on a separate Form 4. There have been no changes in ownership of the Common Stock of the Issuer held by WP X, WP X Partners or WP X O&G. WP X currently owns 11,790,102 share of Common Stock of the Issuer. WP X Partners currently owns 1,758,730 shares of Common Stock of the Issuer. WP X O&G currently owns 43,158,261 shares of Common Stock of the Issuer. The Warburg Pincus Entities, Messrs. Kaye and Landy each disclaim beneficial ownership of the shares of Common Stock of the Issuer held by WP X, WP X Partners and WP X O&G. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Warburg Pincus Entities and certain affiliates may be deemed to be beneficial owners of 27,379,269 shares of Common Stock of the Issuer held collectively by the WP VIII Funds. The Warburg Pincus Entities and such affiliates disclaim beneficial ownership of such shares of Common Stock of the Issuer except to the extent of their direct pecuniary interest therein. The WP VIII Funds, WP Partners, WP Partners GP and WP are directors-by-deputization solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. Information with respect to each of the Warburg Pincus Entities is given solely by such Warburg Pincus Entity, and no Warburg Pincus Entity has responsibility for the accuracy or completeness of information supplied by another Warburg Pincus Entity. Common Stock is held directly by WP VIII CV I. Common Stock is held directly by WP-WPVIII Investors. ***The Power of Attorney given by each of Mr. Kaye and Mr. Landy was previously filed with the U.S. Securities & Exchange Commission on January 15, 2013 as an exhibit to a statement on Schedule 13D/A filed by Warburg Pincus Private Equity X, L.P. with respect to Talon Therapeutics, Inc. and is hereby incorporated by reference. WARBURG PINCUS PRIVATE EQUITY VIII, L.P. By: Warburg Pincus Partners, L.P., its general partner By: Warburg Pincus Partners GP LLC, its general partner By: Warburg Pincus & Co., its managing member By: Name: Robert B. Knauss Title: Partner 2016-03-02 Warburg Pincus Partners, L.P. By: Warburg Pincus Partners GP LLC, its general partner By: Warburg Pincus Co., its managing member By: Name: Robert B Knauss Title: Partner 2016-03-02 WARBURG PINCUS PARTNERS GP LLC By: Warburg Pincus & Co., its managing member By: Name: Robert B Knauss Title: Partner 2016-03-02 Warburg Pincus LLC By: Name: Robert B. Knauss Title: Managing Director 2016-03-02 WARBURG PINCUS & CO. By: Name: Robert B Knauss Title: Partner 2016-03-02 CHARLES R. KAYE By: Robert B Knauss, attorney-in-fact 2016-03-02 JOSEPH P. LANDY By: Robert B Knauss, attorney-in-fact 2016-03-02