SCHEDULE 13G/A 0000947871-22-000250 0001667954 XXXXXXXX LIVE 1 Class A common stock, par value $0.01 per share 03/31/2025 0001865187 Aris Water Solutions, Inc. 04041L106 9651 Katy Freeway Suite 400 Houston TX 77024 Rule 13d-1(d) Yorktown Energy Partners XI, L.P. DE 9304608 0 9304608 0 9304608 N 22.18 PN YORKTOWN XI COMPANY LP DE 9304608 0 9304608 0 9304608 N 22.18 PN YORKTOWN XI ASSOCIATES LLC DE 9304608 0 9304608 0 9304608 N 22.18 OO Aris Water Solutions, Inc. 9651 Katy Freeway, Suite 400, Houston, Texas, 77024 This statement is jointly filed by Yorktown Energy Partners XI, L.P., a Delaware limited partnership ("Yorktown XI"), Yorktown XI Company LP, a Delaware limited partnership and the general partner of Yorktown XI ("Yorktown XI Company"), and Yorktown XI Associates LLC, a Delaware limited liability company and the general partner of Yorktown XI Company ("Yorktown XI Associates", and collectively, with Yorktown XI and Yorktown XI Company, the "Reporting Persons"). The principal business office address of Yorktown XI, Yorktown XI Company and Yorktown XI Associates is 410 Park Avenue, 20th Floor, New York, New York 10022. Each of Yorktown XI, Yorktown XI Company and Yorktown XI Associates is organized under the laws of the state of Delaware. Y Beneficial ownership of the Class A common stock, par value $0.01 per share ("Class A Common Stock"), of Aris Water Solutions, Inc., a Delaware corporation (the "Issuer") referred to herein is being reported hereunder solely because the reporting person directly owns or may be deemed to beneficially own 9,304,608 shares of Class B common stock of the Issuer ("Class B Common Stock") and 9,304,608 membership interests ("Solaris LLC Units") in Solaris Midstream Holdings, LLC ("Solaris LLC"), which are exchangeable for shares of Class A Common Stock on a one-for-one basis, pursuant to the Fourth Amended and Restated Limited Liability Company Agreement of Solaris LLC. Neither the filing of this Schedule 13G nor any of its contents shall be deemed to constitute an admission by any reporting person that it is the beneficial owner of any of the securities referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed. Based on 32,641,526 shares of Class A Common Stock of the Issuer issued and outstanding as of May 5, 2025 as reported on the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 7, 2025 and 9,304,608 shares of Class A Common Stock issuable upon the exchange of shares of Class B Common Stock together with Solaris LLC Units as described above. These securities are directly held by Yorktown XI. Yorktown XI Company is the sole general partner of Yorktown XI and Yorktown XI Associates is the sole general partner of Yorktown XI Company. As a result, Yorktown XI Company and Yorktown XI Associates may be deemed to have the power to vote or direct the vote or to dispose or direct the disposition of the shares owned by Yorktown XI. Yorktown XI Company and Yorktown XI Associates disclaim beneficial ownership of the securities owned by Yorktown XI in excess of its pecuniary interests therein. The information provided in Item 4(c)(i) is incorporated herein by reference into this Item 4(c)(iii). Y Y Y Y Y Y Yorktown Energy Partners XI, L.P. /s/ Robert A. Signorino 05/15/2025 YORKTOWN XI COMPANY LP /s/ Robert A. Signorino 05/15/2025 YORKTOWN XI ASSOCIATES LLC /s/ Robert A. Signorino 05/15/2025