Gran Tierra Energy Inc. announces that its common stock is expected to be admitted today to the standard listing segment of the Official List of the Financial Conduct Authority and to trading on the main market of the London Stock Exchange (“LSE”) for listed securities under the ticker “GTE”. The Company’s common stock will also continue to trade on the NYSE American and on the Toronto Stock Exchange. All dollar amounts are in United States (“U.S.”) dollars. Production amounts are on an average working interest before royalties (“WI”) basis. Per barrel of oil equivalent (“BOE”) amounts are based on WI sales before royalties. All numbers and values have been previously disclosed by the Company in prior press releases and regulatory filings.

Gary Guidry, President and Chief Executive Officer (“CEO”) of Gran Tierra, commented: 
“Commencement of trading on the LSE today marks an important milestone for Gran Tierra, as we continue to profitably grow our exploration and production business in Colombia. We are seeking to expand our investor base at a very exciting time for the Company. Our senior management team is very pleased to be returning to the LSE where we previously achieved a supportive shareholder following in the past at Caracal Energy Inc. (“Caracal”). As with previous companies we have managed such as Caracal, we are committed to creating long-term shareholder value through employing capital discipline and focusing on increasing net asset value three to five times over the next five years. With an excellent track record of profitably growing production, reserves and our resource base in Colombia, we look forward to sharing Gran Tierra’s potential future successes with the London and European investment communities.”