X0306 4 2019-06-10 1 0001433270 ANTERO RESOURCES Corp AR 0001162870 WARBURG PINCUS LLC C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001239318 KAYE CHARLES R C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001220638 Landy Joseph P. C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 Common stock, par value $0.01 per share 2019-06-10 4 S 0 16094190 6.17 D 0 I See Footnotes Effective June 10, 2019, WP X Partners (as defined below) and WP X O&G (as defined below) sold an aggregate total of 16,094,190 shares of common stock, par value $0.01 per share ("Common Stock"), of Antero Resources Corporation (the "Issuer") (the "Sale"). This Form 4 is filed on behalf of Warburg Pincus LLC, a New York limited liability company ("WP LLC") and Charles R. Kaye and Joseph P. Landy, each a Managing General Partner of Warburg Pincus & Co., a New York general partnership ("WP") and the Co-Chief Executive Officers and Managing Members of WP LLC (WP LLC, together with Messrs. Kaye and Landy, the "Warburg Pincus Reporting Persons"). Warburg Pincus Private Equity X O&G, L.P., a Delaware limited partnership ("WP X O&G"), was a shareholder of the Company prior to the sale by WP X O&G as reported on a separate Form 4 (the "WP X O&G Sale") and currently holds no shares of Common Stock. Warburg Pincus X Partners, L.P., a Delaware limited partnership ("WP X Partners"), was a shareholder of the Company prior to the sale by WP X Partners as reported on a Separate Form 4 (the "WP X Partners Sale" and, together with the WP X O&G Sale, the "Sale") and currently owns no shares of Common Stock. WP LLC manages each of WP X O&G and WP X Partners (collectively, the "WP Funds") and WP is the ultimate general partner of the WP Funds. Therefore, the consummation of the Sale altered the indirect beneficial ownership of the Reporting Persons in the shares of Common Stock. 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 Reporting Persons. Each of Charles R. Kaye and Joseph P. Landy serves as Managing General Partner of WP and Co-Chief Executive Officer and Managing Member of WP LLC. Therefore, the consummation of the sale by WP X Partners and WP X O&G reported hereunder altered the indirect beneficial ownership of the Reporting Persons in the shares of Common Stock. Mr. Kaye currently owns, directly and indirectly, 121,270 shares of Common Stock. Mr. Landy currently owns 565,799 shares of Common Stock. This Form 4 is one of two Forms 4 filed relating to the same event. The Form 4 has been split into two filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 reporting persons. WARBURG PINCUS LLC By: /s/ Robert B. Knauss Name: Robert B. Knauss Title: Managing Director 2019-06-12 CHARLES R. KAYE By: /s/ Robert B. Knauss Name: Robert B. Knauss, attorney-in-fact for Charles R. Kaye 2019-06-12 JOSEPH P. LANDY By: /s/ Robert B. Knauss Name: Robert B. Knauss, attorney-in-fact for Joseph P. Landy 2019-06-12