GRAN TIERRA ENERGY INC

2024 Annual Meeting

The Board of Directors of Gran Tierra Energy Inc. has established May 2, 2024 as the date of the Company’s 2024 Annual Meeting of Stockholders (the “2024 Annual Meeting”) and March 6, 2024 as the record date for determining stockholders entitled to notice of, and to vote at, the 2024 Annual Meeting. The time and location of the 2024 Annual Meeting will be as set forth in the Company’s proxy materials for the 2024 Annual Meeting.

Credit Facility

The Amendment made various changes to the Credit Facility, including: (i) the initial commitment was adjusted from $100 million to $50 million (maintaining the potential option of up to an additional $50 million, subject to approval by the lender) (ii) the availability period for the draw under the Credit Facility was extended from August 20, 2023 (extended under the Amended Credit Facility) until December 31, 2023.

The Credit Facility, as amended and restated, remains secured by Gran Tierra’s Colombian assets and economic rights and its remaining commercial terms remain unchanged. The Credit Facility has a final maturity date of August 15, 2024. As of February 20, 2024, the credit facility has been drawn by $36 million.

Trading Arrangements

During the three months ended December 31, 2023, no director or Section 16 officer adopted orterminated any Rule 10b5-1 trading arrangements or non-Rule 10b5-1 trading arrangements (in each case, as defined in Item 408(a) of Regulation S-K).