Gran Tierra Energy Inc. Announces Completion of Conditions Precedent for Tisquirama Contract

CALGARY, Alberta, May 27, 2026 (GLOBE NEWSWIRE) -- Gran Tierra Energy Inc. (“Gran Tierra” or the “Company”) (NYSE American:GTE)(TSX:GTE)(LSE:GTE) is pleased to announce today that the Company has satisfied all outstanding conditions precedent to the effectiveness of the contract previously announced on March 17, 2026 with Ecopetrol S.A., by which the Company will earn a 49 percent working interest in the Tisquirama block located in the Middle Magdalena Valley Basin of Colombia (the “Block”), which contains the Tisquirama and San Roque fields (the “Fields”) (the “Tisquirama Contract”). Production is expressed in barrels of oil equivalent (“boe”) per day (“boepd”). All dollar amounts are in United States (“U.S.”) dollars unless otherwise indicated.