Mr. Gary Guidry reports

PETER DEY ANNOUNCES RETIREMENT FROM GRAN TIERRA'S BOARD OF DIRECTORS

For personal reasons, Peter Dey will be stepping down from the board of Gran Tierra Energy Inc. at the end of June, 2025. Mr. Dey has agreed to make himself available to consult with the board as required until the end of 2025, while a search is conducted for a replacement director.

"On behalf of the board of directors of Gran Tierra, I want to thank Peter for his leadership and guidance since 2015," said Bob Hodgins, chairman of Gran Tierra.

"We have worked with Peter for almost 15 years across multiple companies and continents. Peter is a distinguished expert in board governance, and his broad commercial background and strategic input have been instrumental in navigating a volatile and evolving industry," said Gary Guidry, chief executive officer of Gran Tierra.

About Gran Tierra Energy Inc.

Gran Tierra, 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.