X0202 SCHEDULE 13G 0001090012 XXXXXXXX LIVE Class A Common Stock 06/30/2026 0001853868 Fervo Energy Company 31556C106 811 Main Street Suite 1700 Houston TX 77002 Rule 13d-1(d) DEVON ENERGY CORP/DE DE 35728296 0 35728296 0 35728296 N 12.5 CO Fervo Energy Company 811 Main Street, Suite 1700 Houston, TX, 77002 DEVON ENERGY CORP/DE THREE MEMORIAL CITY PLAZA 840 GESSNER ROAD, SUITE 1400, HOUSTON TEXAS 77024 Delaware Y 35,728,296 Devon Technology Ventures Holdings, L.L.C. ("Devon Technology Ventures"), a wholly-owned subsidiary of Devon Energy Corporation ("Devon"), is the record holder of the shares of Class A common stock, par value $0.0001 ("Class A Common Stock"). Devon has sole voting and investment power with respect to the shares held by Devon Technology Ventures. 12.5% The percent of class beneficially owned by Devon was calculated assuming 286,859,562, shares of Class A Common Stock of Fervo Energy Company (the "Issuer") outstanding as of June 17, 2026, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on June 23, 2026. 35,728,296 0 35,728,296 0 Y Y Y Y Y Y DEVON ENERGY CORP/DE /s/ Gregory F. Conaway 08/13/2026