Gran Tierra Energy Inc. ("Gran Tierra" or the "Company") (NYSE:GTE) (TSX:GTE) (LSE:GTE) today announced that its stockholders have approved the previously announced sale of Gran Tierra’s Colombian and Ecuadorian businesses to Maurel & Prom for total consideration of approximately US$1.33 billion, including the assumption of debt and subject to adjustment (the "Sale"). The vote took place at the Company’s special meeting of stockholders held on October 9, 2026 (the "Special Meeting"). The Sale is to be effected pursuant to the Share Sale and Purchase Agreement entered into on August 5, 2026 (the "Share Purchase Agreement"). Gran Tierra expects to receive total net cash proceeds from the Sale of approximately US$315 million, of which approximately US$250 million is payable on closing and approximately US$65 million is payable 364 days thereafter.