Gran Tierra shareholders approve 1-for-10 reverse stock split, elect all director nominees

Proposal 3 - Approval of Named Executive Officer Compensation Gran Tierra’s stockholders approved, on an advisory basis, the compensation of Gran Tierra’s named executive officers, as disclosed in the Proxy Statement. The tabulation of votes on this matter was as follows: Shares voted for: 120,250,269 Shares voted against: 15,696,298 Shares abstaining: 2,272,409 Broker non-votes: 71,279,915

Proposal 4 - Approval of 1-for-10 Reverse Stock Split Gran Tierra’s stockholders approved an amendment to Gran Tierra’s Certificate of Incorporation to effect a 1-for-10 reverse stock split of Gran Tierra’s common stock. The tabulation of votes on this matter was as follows: Shares voted for: 177,137,400 Shares voted against: 31,365,266 Shares abstaining: 996,222 Broker non-votes: 3

Proposal 2 - Ratification of Appointment of Independent Registered Public Accounting Firm Gran Tierra’s stockholders ratified the selection of KPMG LLP as Gran Tierra’s independent registered public accounting firm for the fiscal year ending December 31, 2023. The tabulation of votes on this matter was as follows: Shares voted for: 201,486,930 Shares voted against: 6,616,831 Shares abstaining: 1,395,129 Broker non-votes: 1

Proposal 1 - Election of Directors Gran Tierra’s stockholders duly elected each of the nominees proposed by Gran Tierra to serve until Gran Tierra’s 2024 Annual Meeting of Stockholders or until their respective successor has been duly elected and qualified. The tabulation of votes on this matter was as follows: Nominee Shares Voted For Shares Voted Against Shares Abstaining Broker Non-Votes Gary S. Guidry 128,908,156 7,934,258 1,376,562 71,279,915 Peter J. Dey 106,689,895 29,468,121 2,060,959 71,279,916 Evan Hazell 123,472,188 11,116,598 3,630,190 71,279,915 Robert B. Hodgins 119,081,520 17,067,177 2,070,279 71,279,915 Alison Redford 122,566,277 13,586,524 2,066,175 71,279,915 Ronald W. Royal 128,919,291 7,256,324 2,043,361 71,279,915 Sondra Scott 122,720,697 13,455,629 2,042,650 71,279,915 David P. Smith 128,755,514 7,392,838 2,070,624 71,279,915 Brooke Wade 123,561,136 12,591,957 2,065,883 71,279,915