Mr. Gary Guidry reports

GRAN TIERRA ENERGY INC. ANNOUNCES EARLY PARTICIPATION DEADLINE RESULTS FOR THE PREVIOUSLY ANNOUNCED EXCHANGE OFFER OF CERTAIN EXISTING NOTES FOR NEW NOTES AND THE SOLICITATION OF CONSENTS TO PROPOSED AMENDMENTS TO THE EXISTING INDENTURE

Gran Tierra Energy Inc. has released the early participation results of its previously announced offer to eligible holders (as defined herein) to exchange any and all of the company's outstanding 9.500 per cent senior secured amortizing notes due 2029 (Cusip: 38500T AC5/U37016 AC3; ISIN: US38500TAC53/USU37016AC37) (the existing notes) for newly issued 9.750 per cent senior secured amortizing notes due 2031 (the new notes), pursuant to the terms and subject to the conditions set forth in the exchange offer memorandum and consent solicitation statement, dated Jan. 29, 2026, in respect of the exchange offer and the solicitation of consents (as amended and supplemented by the supplement to the exchange offer memorandum, dated Feb. 5, 2026, and as further amended or supplemented hereby, the exchange offer memorandum). Any capitalized terms used in this press release without definition have the respective meanings assigned to such terms in the exchange offer memorandum.

As of 5 p.m. ET on Feb. 11, 2026 (the early participation deadline), $636.74-million (U.S.) aggregate principal amount of existing notes outstanding, representing approximately 88.89 per cent of the total aggregate principal amount of existing notes outstanding, had been validly tendered for exchange and not validly withdrawn, as confirmed by the Information agent and exchange agent for the exchange offer.

Since the company received consents from eligible holders of existing notes that, in the aggregate, represent not less than 66.66 per cent in aggregate principal amount of existing notes outstanding from eligible holders of existing notes to effect certain proposed amendments to the indenture dated as of Oct. 20, 2023, under which the existing notes were issued, satisfying the requirements under the existing indenture to adopt the proposed amendments, the company has executed and delivered a supplemental indenture to the existing indenture, with respect to the proposed amendments, but such supplemental indenture will become operative only upon consummation of the exchange offer on the early settlement date. The proposed amendments provide for, among other things, (i) the elimination of substantially all of the restrictive covenants and associated events of default and related provisions with respect to the existing notes, (ii) the release of the collateral securing the existing notes, and (iii) the amendment of certain defined terms and covenants in the existing indenture.

The withdrawal deadline has not been extended and expired at 5 p.m. ET on Feb. 11, 2026. Accordingly, holders may no longer withdraw existing notes tendered in the exchange offer, except in certain limited circumstances as set forth in the exchange offer memorandum. Except as modified by the terms of this press release, all other terms and conditions of the exchange offer and the solicitation of consents, as previously announced and described in the exchange offer memorandum, remain unchanged.

Eligible holders who validly tendered existing notes and delivered consents, and did not validly revoke such tenders and consents, on or prior to the early participation deadline, and whose existing notes are accepted for exchange by the company will receive, on Feb. 18, 2026, for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn) on or prior to the early participation deadline, $1,000 (U.S.), a portion of which will be payable in cash and the remainder will be payable in principal amount of new notes. The total consideration includes an early participation premium for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn) on or prior to the early participation deadline equal to $50 (U.S.), payable on the early settlement date.

The aggregate cash consideration payable as part of the total consideration (which includes the early participation premium) to all eligible holders whose existing notes were validly tendered (and not validly withdrawn) on or prior to the early participation deadline and whose existing notes are accepted for exchange is equal to $125.0-million (U.S.). The pro rata portion of the $125.0-million (U.S.) cash consideration as part of the total consideration for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn) on or prior to the early participation deadline will be based on the aggregate principal amount of existing notes validly tendered (and not validly withdrawn) on or prior to the early participation deadline and accepted for exchange. Assuming all $636.74-million (U.S.) aggregate principal amount of the existing notes that were validly tendered for exchange, and not validly withdrawn, on or prior to the early participation deadline are accepted for exchange, each eligible holder is expected to receive, for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn on or prior to the early participation deadline), approximately $196.31 (U.S.) in cash and approximately $803.69 (U.S.) in aggregate principal amount of new notes. Notwithstanding the foregoing, we will not accept any tender of existing notes that would result in the issuance of less than the minimum denomination of $200,000 (U.S.) in principal amount of new notes. As a result, the actual amount of existing notes accepted in the exchange offer and the portion of the cash consideration and amount of new notes that eligible holders will receive in exchange for existing notes validly tendered (and not validly withdrawn) on or prior to the early participation deadline may differ.

The exchange offer and the solicitation of consents will expire at 5 p.m. ET on Feb. 27, 2026, unless extended or earlier terminated by the company, in its sole discretion. The company currently expects the settlement for the existing notes validly tendered after the early participation deadline but before the expiration deadline to be on March 2, 2026, which is the first business day after the expiration deadline.

The company is hereby amending the exchange offer to increase the exchange consideration for eligible holders who validly tender existing notes and deliver consents, and do not validly revoke such tenders and consents, after the early participation deadline and on or prior to the expiration deadline and whose existing notes are accepted for exchange, to receive, for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn), $1,000 (U.S.) aggregate principal amount of new notes. No cash consideration will be paid for any existing notes validly tendered, and consents validly delivered, after the early participation deadline and on or prior to the expiration deadline. Any tender of existing notes on or prior to the early participation deadline that is not accepted for exchange because it would result in the issuance of less than the minimum denomination of $200,000 (U.S.) in principal amount of new notes, due to the payment of the cash consideration as a portion of the total consideration, will be able to tender such existing notes after the early participation deadline, but on or prior to the expiration deadline, and be eligible to receive the exchange consideration of $1,000 (U.S.) in principal amount of new notes for each $1,000 (U.S.) aggregate principal amount of existing notes validly tendered (and not validly withdrawn) on or prior to the expiration deadline.

The company is hereby amending the definition of accrued interest to deduct accrued interest on the new notes from the early settlement date to, but not including, the settlement date. As a result, eligible holders whose existing notes are accepted for exchange will be paid (i) accrued and unpaid interest on such existing notes from, and including, the most recent date on which interest was paid on such holder's existing notes to, but not including, the early settlement date or the settlement date, as applicable, less (ii) accrued and unpaid interest on the new notes from the early settlement date to, but not including, the settlement date for the existing notes which are accepted for exchange after the early participation deadline but at or prior to the expiration deadline, payable on the early settlement date or the settlement date, as applicable. Accrued interest will be paid in cash on the early settlement date or the settlement date, as applicable. Interest will cease to accrue on the early settlement date or the settlement date, as applicable, for all existing notes accepted for exchange in the exchange offer.

The company's obligation to accept existing notes validly tendered, and not validly withdrawn, pursuant to the exchange offer and consents validly delivered, and not validly revoked, pursuant to the solicitation is subject to the satisfaction of certain conditions described in the exchange offer memorandum, which include (i) the non-occurrence of an event or events or the likely non-occurrence of an event or events that would or might reasonably be expected to prohibit, restrict or delay the consummation of the exchange offer or materially impair the contemplated benefits to the company of the exchange offer, (ii) the valid tender (and not valid withdrawal) of existing notes by eligible holders in the exchange offer that, in the aggregate, represent not less than 80 per cent in aggregate principal amount of existing notes outstanding prior to the early participation deadline, (iii) the consummation of an incurrence of new indebtedness, on terms and subject to conditions satisfactory to us, that results in the receipt of net proceeds that are sufficient to pay the cash consideration, and (iv) certain other customary conditions. The company reserves the right to waive the conditions to the exchange offer at any time. However, because the aggregate principal amount of existing notes validly tendered pursuant to the exchange offer, and the consents delivered in the solicitation, and not validly withdrawn is greater than the minimum exchange condition, and the financing condition is expected to be satisfied on or prior to the early settlement date, the company expects to accept for exchange all existing notes validly tendered and not validly withdrawn at or prior to the early participation deadline, except that we will not accept any tender of existing notes that would result in the issuance of less than the minimum denomination of $200,000 (U.S.) in principal amount of new notes and subject to the satisfaction of the other conditions described in the exchange offer memorandum.

The company will not receive any cash proceeds from the issuance of the new notes in the exchange offer and the solicitation of consents. existing notes tendered in connection with the exchange offer, and accepted for exchange, will be cancelled.

The exchange offer is being made, and the new notes are being offered and issued, only (a) in the United States to holders of existing notes who are reasonably believed to be qualified institutional buyers (as defined in Rule 144A under the Securities Act of 1933, as amended) in reliance upon the exemption from the registration requirements of the Securities Act, and (b) outside the United States to holders of existing notes who are persons other than U.S. persons (as defined in Rule 902 under the Securities Act) in reliance upon Regulation S under the Securities Act and who are non-U.S. qualified offerees and eligible purchasers in other jurisdictions as set forth in the exchange offer memorandum. Holders who have returned a duly completed eligibility letter certifying that they are within one of the categories described in the immediately preceding sentences are authorized to receive and review the exchange offer memorandum and to participate in the exchange offer and the solicitation of consents. Holders who desire to obtain copies of the exchange offer memorandum, including copies of the supplement, and to obtain and complete an eligibility letter should either visit the D.F. King website for this purpose, or call D.F. King & Co. Inc., the information agent and exchange agent for the exchange offer and the solicitation of consents at 1-888-628-9011 (toll free), 1-646-582-9168 (banks and brokers) or e-mail at gte@dfking.com.

About Gran Tierra Energy Inc.

Gran Tierra Energy, together with its subsidiaries, is an independent international energy company currently focused on oil and natural gas exploration and production in Canada, Colombia and Ecuador. The company is currently developing its existing portfolio of assets in Canada, Colombia and Ecuador, and will continue to pursue additional new growth opportunities that would further strengthen the company's portfolio. The company's common stock trades on the NYSE American, the Toronto Stock Exchange and the London Stock Exchange under the ticker symbol GTE.

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