CUSIP No. 03675Y 103
INTRODUCTION
This Amendment No. 2 (this “Amendment”) amends and supplements the Schedule 13D relating to the Shares that was filed on May 22, 2017 and amended by Amendment No. 1 on June 13, 2017 (the “Original Schedule 13D” and, together with this Amendment, the “Schedule 13D”) with the SEC by 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 limited partnership formed under the laws of the Netherlands (“WP VIII CV I”), andWP-WPVIII Investors, L.P., a Delaware limited partnership(“WP-WPVIII Investors”), collectively, the “WP VIII Funds”); Warburg Pincus Private Equity X O&G, L.P., a Delaware limited partnership (“WP X O&G” and, together with its affiliated partnership, Warburg Pincus X Partners, L.P., a Delaware limited partnership, the “WP X O&G Funds”); Warburg Pincus X, L.P., a Delaware limited partnership (“WP X GP”), which is the general partner of each of the WP X O&G Funds; Warburg Pincus X GP L.P., a Delaware limited partnership (“WP X GP LP”), which is the general partner of WP X GP; WPP GP LLC, a Delaware limited liability company (“WPP GP”), which is the general partner of WP X GP LP andWP-WPVIII Investors GP L.P., a Delaware limited partnership(“WP-WPVIII GP”), which is the general partner ofWP-WPVIII Investors; Warburg Pincus Partners, L.P., a Delaware limited partnership (“WP Partners”), which 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”), which is the general partner of WP Partners; Warburg Pincus & Co., a New York general partnership (“WP”), which is the managing member of WP Partners GP; Warburg Pincus LLC, a New York limited liability company (“WP LLC”), which is the manager of each of the WP VIII Funds and the WP X O&G Funds; and Charles R. Kaye and Joseph P. Landy, who are the Managing General Partners of WP and the Managing Members andCo-Chief Executive Officers of WP LLC and may be deemed to control the Warburg Pincus Entities (as defined below). Each of the WP VIII Funds, the WP X O&G Funds, WP X GP, WP X GP LP, WPP GP, WP Partners, WP Partners GP, WP and WP LLC are collectively referred to herein as the “Warburg Pincus Entities” and, together with Charles R. Kaye and Joseph P. Landy, the “Reporting Persons.” Unless set forth below, all previous Items of the Original Schedule 13D are unchanged. Capitalized terms used but not defined herein shall have the meaning set forth in the Original Schedule 13D.
Item 2. Identity and Background
Schedule A attached hereto, which amends the Schedule A included in the Original Schedule 13D, sets forth lists of all directors/managers and executive officers or persons holding equivalent positions (the “Scheduled Persons”) of each Reporting Person.
Item 4. Purpose of Transaction.
This Item 4 shall be deemed to amend and restate Item 4 to the Original Schedule 13D in its entirety:
The following describes plans or proposals that the Reporting Person may have with respect to the matters set forth in Item 4(a)-(j) of Schedule 13D:
(a)
Simplification Agreement
On October 9, 2018, the Issuer and Antero Midstream Partners LP, a Delaware limited partnership (“Antero Midstream”), announced that they had entered into a Simplification Agreement (the “Simplification Agreement”), dated as of October 9, 2018, by and among AMGP GP LLC, a Delaware limited liability company and the general partner of the Issuer (“AMGP GP”), the Issuer, Antero IDR Holdings LLC, a Delaware limited liability company and subsidiary of the Issuer (“IDR Holdings”), Arkrose Midstream Preferred Co LLC, a Delaware limited liability company and wholly owned subsidiary of the Issuer (“Preferred Co”), Arkrose Midstream Newco Inc., a Delaware corporation and wholly owned subsidiary of the Issuer (“NewCo”), Arkrose Midstream Merger Sub LLC, a Delaware limited liability company and wholly owned subsidiary of NewCo (“Merger Sub”), Antero Midstream Partners GP LLC (“AMP GP”), a Delaware limited liability company and the general partner of the Issuer, and Antero Midstream (collectively, the “Parties”).
Pursuant to the Simplification Agreement, the Parties will, on the terms and subject to the satisfaction of certain conditions contained therein, consummate a series of transactions pursuant to which: (1) AMP GP will execute and deliver an amendment (the “Antero Midstream Partnership Agreement Amendment”) to the Agreement of Limited Partnership of Antero Midstream, dated as of November 10, 2014, as amended by Amendment No. 1, dated as of February 23, 2016, and Amendment No. 2, dated as of December 20, 2017 (the “Antero Midstream Partnership Agreement”), pursuant to which, among other things, (i) the “General Partner” as defined in the Antero Midstream