REG-Gran Tierra Energy Inc. Provides AGM Update and Announces Board Changes

Gran Tierra EnergyAnnouncement

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CALGARY, Alberta, March 17, 2026 (GLOBE NEWSWIRE) -- Gran Tierra Energy Inc.
(“Gran Tierra” or the “Company”) (NYSE American:GTE) (TSX:GTE)
(LSE:GTE) announces that the Company has scheduled its 2026 Annual Meeting of
Stockholders to be held on Friday, May 8, 2026, at 10:00 a.m. Mountain Time,
12:00 p.m. Eastern Time. Our Annual Meeting will be held as a virtual-only
stockholder meeting with participation occurring electronically as explained
further in our Proxy Statement. Shareholders will be able obtain a free copy
of the Proxy Statement and other documents the Company files with the SEC
(when available) through the website maintained by the SEC at www.sec.gov. The
Company will also make available free of charge on its investor relations
website copies of materials it files with, or furnishes to, the SEC.

Further, Evan Hazell, Sondra Scott, David Smith and Brad Virbitsky have each
notified the Board of Directors of Gran Tierra Energy Inc. of their respective
decisions to resign as members of the Board effective immediately. Further
details of the resignations are found on a Form 8-K filing with today’s date
located on the website maintained by the SEC at www.sec.gov and SEDAR+ at
http://www.sedarplus.ca. As a result the Board of Gran Tierra has decreased
the size of the Board from nine to five directors.

Contact Information

For investor and media inquiries please contact:

Gary Guidry, Chief Executive Officer

Ryan Ellson, Executive Vice President & Chief Financial Officer

+1-403-265-3221
info@grantierra.com

About Gran Tierra Energy Inc.

Gran Tierra Energy Inc., together with its subsidiaries, is an independent
international energy company currently focused on oil and natural gas
exploration and production in Canada, Colombia, Ecuador and Azerbaijan. The
Company is currently developing its existing portfolio of assets in Canada,
Colombia and Ecuador; however, we have recently entered into an exploration,
development and production sharing agreement with SOCAR and may eventually
expand our operations into Azerbaijan 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. Additional information concerning Gran Tierra is available at
www.grantierra.com. Except to the extent expressly stated otherwise,
information on the Company’s website or accessible from our website or any
other website is not incorporated by reference into and should not be
considered part of this press release. Investor inquiries may be directed to
info@grantierra.com or (403) 265-3221.

Gran Tierra’s filings with the U.S. Securities and Exchange Commission (the
“SEC”) are available on the SEC website at http://www.sec.gov. Gran
Tierra’s Canadian securities regulatory filings are available on SEDAR+ at
http://www.sedarplus.ca and UK regulatory filings are available on the
National Storage Mechanism website at
https://data.fca.org.uk/#/nsm/nationalstoragemechanism