Gran Tierra Energy Inc. reported its year-end 2025 reserves and resources results, highlighting greater than 100% reserve replacement in South America on both a proved developed producing $(PDP)$ and proved plus probable (2P) basis. The company’s South American reserves base benefited from new discoveries in multi-zone, waterfloodable reservoirs, and the strategic acquisition of the Perico and Espejo blocks in Ecuador, which added scale and high-quality inventory. Recent exploration successes, including the Conejo discoveries, contributed material reserves, while the Chanangue Este reactivation added incremental reserves and extended productive field life. At December 31, 2025, Gran Tierra reported before-tax net asset values $(NAV)$ of $0.8 billion for 1P, $1.8 billion for 2P, and $2.7 billion for 3P reserves. The company holds approximately 118 million barrels (MMBBL) of mean unrisked prospective resources across its South American portfolio. Core producing assets such as Acordionero and Cohembi continued steady base production, while operational focus is being increased on waterflood surveillance and optimization at Costayaco and Moqueta for 2026. In Canada, Gran Tierra reclassified certain Glauconitic drilling locations from reserves to contingent resources to align with commodity price assumptions and expected activity levels. The reclassification did not have a material impact on the company’s NAV.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Gran Tierra Energy Inc. published the original content used to generate this news brief via GlobeNewswire (Ref. ID: GNW9644945-en) on January 29, 2026, and is solely responsible for the information contained therein.