X0306 4 2022-06-03 0 0001389050 Archrock, Inc. AROC 0001783517 Old Ocean Reserves, LP 1111 TRAVIS STREET, SUITE 2300 HOUSTON TX 77002 0 0 1 0 0001783561 Hildebrand Enterprises Co 1111 TRAVIS STREET, SUITE 2300 HOUSTON TX 77002 0 0 1 0 0001783560 Hildebrand Enterprises, LP 1111 TRAVIS STREET, SUITE 2300 HOUSTON TX 77002 0 0 1 0 0001783513 Hildebrand Jeffery D 1111 TRAVIS STREET, SUITE 2300 HOUSTON TX 77002 0 0 1 0 0001783511 Hildebrand Melinda B 1111 TRAVIS STREET, SUITE 2300 HOUSTON TX 77002 0 0 1 0 Common Stock 2022-06-03 4 S 0 94583 10.18 D 16999200 D Common Stock 2022-06-06 4 S 0 65519 10.11 D 16933681 D On June 3, 2022, Old Ocean Reserves, LP ("OO Reserves") sold 94,583 shares of common stock ("Common Stock") of Archrock, Inc. (the "Issuer"), which was effected through open market sales. Shares of Common Stock of the Issuer are held directly by OO Reserves. Hildebrand Enterprises Company ("Hildebrand Company") is the general partner of OO Reserves. Hildebrand Enterprises, LP ("Hildebrand Enterprises") is the sole limited partner of OO Reserves. Hildebrand Enterprises and Hildebrand Company are wholly owned by Jeffery D. Hildebrand and Melinda B. Hildebrand. Each of the Reporting Persons may be deemed to be the beneficial owner of all or a portion of the securities reported herein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein, and the Reporting Persons disclaim beneficial ownership of such securities except to the extent of the pecuniary interest therein. On June 6, 2022, OO Reserves sold 65,519 shares of Common Stock of the Issuer, which was effected through open market sales. Old Ocean Reserves, LP by Hildebrand Enterprises Company, its general partner by/s/Douglas C. Kelly, Secretary 2022-06-06