Pricing of an Additional $100 Million Aggregate Principal Amount of its 9.500% Senior Secured Amortizing Notes due 2029

Gran Tierra previously had outstanding US$487,590,000 aggregate principal amount of 9.500% Senior Secured Amortizing Notes due 2029 (the “Original Notes”). The Notes will have the same terms and provisions as the Original Notes, except for the issue price, and will form the same series as the Original Notes, including with respect to interest payments. Gran Tierra expects to close the offering on February 6, 2024. Gran Tierra expects to receive net proceeds, after initial purchasers’ discounts and commissions and estimated fees and offering expenses, of approximately $88.3 million. Upon settlement, the Notes are expected to trade under the same CUSIP number as the Original Notes, except that the Notes sold pursuant to Regulation S under the Securities Act will have a different CUSIP number than the Original Notes until 40 days after the issue date of the Notes.

The Notes will be guaranteed by certain subsidiaries of Gran Tierra. Gran Tierra intends to use the net proceeds from the offering to repay the outstanding amounts borrowed under its existing credit facility (after which the credit facility will be terminated), and any remaining net proceeds from the offering for general corporate purposes, which may include additional capital to appraise and develop exploration discoveries, repayment of other indebtedness, working capital and/or acquisitions.

Gary Guidry, President & Chief Executive Officer

Ryan Ellson, Executive Vice President & Chief Financial Officer

Rodger Trimble, Vice President, Investor Relations