SCHEDULE 13G/A 0001172661-25-002324 0001541901 XXXXXXXX LIVE 2 Common Stock, par value $0.001 per share 09/30/2025 0001273441 GRAN TIERRA ENERGY INC. 38500T200 500 Centre Street SE Calgary A0 T2G 1A6 Rule 13d-1(c) Encompass Capital Advisors LLC b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 IA Todd J. Kantor b X1 0.00 0.00 0.00 0.00 0.00 N 0.00 HC IN Encompass Capital Partners LLC b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 OO GRAN TIERRA ENERGY INC. 500 Centre Street SE, Calgary, Alberta T2G 1A6 Encompass Capital Advisors LLC Todd J. Kantor Encompass Capital Partners LLC Encompass Capital Advisors LLC: 200 Park Avenue, Suite 1604, New York, NY 10166 Todd J. Kantor: c/o Encompass Capital Advisors LLC, 200 Park Avenue, Suite 1604, New York, NY 10166 Encompass Capital Partners LLC: 200 Park Avenue, Suite 1604, New York, NY 10166 Encompass Capital Advisors LLC is a Delaware Limited Liability Company Todd J. Kantor is a US citizen Encompass Capital Partners LLC is a Delaware Limited Liability Company Y Encompass Capital Advisors LLC 0 Todd J. Kantor 0 Encompass Capital Partners LLC 0 Encompass Capital Advisors LLC 0.00% Todd J. Kantor 0.00% Encompass Capital Partners LLC 0.00% Encompass Capital Advisors LLC 0 Todd J. Kantor 0 Encompass Capital Partners LLC 0 Encompass Capital Advisors LLC 0 Todd J. Kantor 0 Encompass Capital Partners LLC 0 Encompass Capital Advisors LLC 0 Todd J. Kantor 0 Encompass Capital Partners LLC 0 Encompass Capital Advisors LLC 0 Todd J. Kantor 0 Encompass Capital Partners LLC 0 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. JOINT FILING AGREEMENT The undersigned hereby agree that the statement on SCHEDULE 13G with respect to the shares of Class A Common Stock of Gran Tierra Energy Inc., dated as of September 30, 2025 is, and any amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. Date: November 14, 2025 Encompass Capital Advisors LLC By: Todd J. Kantor Name: Todd J. Kantor Title: Managing Member Todd J. Kantor By: Todd J. Kantor Name: Todd J. Kantor Encompass Capital Partners LLC By: Todd J. Kantor Name: Todd J. Kantor Title: Managing Member Encompass Capital Advisors LLC Todd J. Kantor 11/14/2025 Todd J. Kantor Todd J. Kantor 11/14/2025 Encompass Capital Partners LLC Todd J. Kantor 11/14/2025