Exhibit 99.1 Gran Tierra Energy Inc. Reports Robust Reserves Replacement and Record High Reserves CALGARY, Alberta – January 23, 2025 – Gran Tierra Energy Inc. ("Gran Tierra" or the "Company") (NYSE American:GTE) (TSX:GTE)(LSE:GTE), an independent international energy company focused on oil and natural gas exploration and production in Canada, Colombia and Ecuador, today announced the Company's 2024 year-end reserves as evaluated by the Company's independent qualified reserves evaluator McDaniel & Associate ...

Sixth Consecutive Year of 1P Total Reserves Growth Resulting in Highest Total Reserves in Company HistoryDelivered 702% 1P and 1,249% 2P Reserves Replacement Including Recent AcquisitionTotal Liquids 1P and 2P Reserves Increased to 128 and 217 Million Barrels of Oil Equivalent with 1P and 2P Reserve Life Index increasing to 10 and 17 Years, RespectivelyAdded Total Reserves of 89 MMBOE 1P, 159 MMBOE 2P and 191 MMBOE 3PNet Present Value Before Tax Discounted at 10% of $2.0 Billion (1P), $3.2 Billion (2P), and ...

2025 Capital Expenditure Budget of $240-280 Million and Expected 2025 Cash Flow1 of $260-300 Million2025 Capital Program Includes 10-14 Development Wells and 6-8 High Impact Exploration WellsForecast 2025 Production of 47,000-53,000 BOEPD, Representing at the Midpoint, an Increase of 44% from 2024 Forecast 2025 Free Cash Flow2 of $90 Million Before Exploration, $20 Million After Exploration in Base CasePlan to Allocate Up To 50% of After Exploration Free Cash Flow to Share BuybacksAchieved Total Company Pro ...

| --- | --- | |---------------------|-------| | | | | November 2024 | | | | | | DIVERSIFIED | | | | | | PRODUCER FOCUSED ON | LONG | | | | | TERM VALUE CREATION | | www.grantierra.com GENERAL ADVISORY The information contained in this presentation does not purport to be all-inclusive or contain all information that readers may require. You are encouraged to conduct your own analysis and review of Gran Tierra Energy Inc. ("Gran Tierra", "GTE", or the "Company") and of the information contained in this presen ...

Gran Tierra Energy Inc. (NYSE:GTE) Q3 2024 Earnings Conference Call November 4, 2024 11:00 AM ET Company Participants Gary Guidry – President and Chief Executive Officer Ryan Ellson – Executive Vice President and Chief Financial Officer Sebastien Morin – Chief Operating Officer Conference Call Participants Greg Pardy – RBC Capital Markets Anne Milne – Bank of America Peter Bowley – Jefferies LLC Alejandra Andrade – JPM Operator Good morning, ladies and gentlemen, and welcome to the Gran Tierra Energy's Resu ...

Gran Tierra Energy Inc. Reports Third Quarter 2024 Results and Announces its Sixth Consecutive Ecuador Oil Discovery from the Charapa-B7 Well • Gran Tierra Announces its Sixth Consecutive Ecuador Oil Discovery from the Charapa-B7 Well and Has Achieved Cumulative Production of Over 1 Million Barrels of Oil in Ecuador • Gran Tierra Achieved $1 Million in Net Income and Generated $60 Million in Funds Flow from Operations , an Increase of 31% from Prior Quarter (2) • Third Quarter 2024 Total Average WI Producti ...

CALGARY, Alberta, Nov. 04, 2024 (GLOBE NEWSWIRE) -- Gran Tierra Energy Inc. (“Gran Tierra”) (NYSE American: GTE)(TSX: GTE)(LSE: GTE), today announces that the Toronto Stock Exchange (“TSX”) has approved its notice of intention to make a normal course issuer bid (the “Bid”) for its shares of common stock (the “Shares”). As of October 31, 2024, there were 36,460,141 Shares issued and outstanding and the public float was 35,458,717 Shares. Pursuant to the Bid, Gran Tierra will be able to purchase for cancellat ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission file number 001-34018 GRAN TIERRA ENERGY INC. (Exact name of registrant as specified in its charter) Delaware 98-04799 ...

Gran Tierra Announces its Sixth Consecutive Ecuador Oil Discovery from the Charapa-B7 Well and Has Achieved Cumulative Production of Over 1 Million Barrels of Oil in Ecuador Gran Tierra Achieved $1 Million in Net Income and Generated $60 Million in Funds Flow from Operations(2), an Increase of 31% from Prior QuarterThird Quarter 2024 Total Average WI Production of 32,764 BOPDOperating Netback of $101 Million and Adjusted EBITDA of $93 Million(1)(4)Exited the Quarter with $278 Million in Cash Entered into ne ...

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION FOR IMMEDIATE RELEASE CALGARY, Alberta, Oct. 31, 2024 (GLOBE NEWSWIRE) -- 31 October 2024 RECOMMENDED AND FINAL CASH AND SHARE ACQUISITION for i3 Energy plc ("i3 Energy") by Gran Tierra Energy Inc. ("Gran Tierra") to be implemented by way of a scheme of arrangement under Part 26 of t ...