CALGARY, Alberta, Aug. 29, 2022 (GLOBE NEWSWIRE) —

Gran Tierra Energy Inc. (“Gran Tierra”) (NYSE American: GTE)(TSX: GTE)(LSE: GTE)

, today announces that the Toronto Stock Exchange (“

TSX

”) has approved its notice of intention to make a normal course issuer bid (the “

Bid

”) for its shares of common stock (the “

Shares

”). As of August 22, 2022, there were 368,871,685 Shares issued and outstanding and the public float was 360,339,690 Shares. Pursuant to the Bid, Gran Tierra will be able to purchase for cancellation up to 36,033,969 Shares, representing 10% of the public float, at prevailing market prices at the time of purchase, through the facilities of the TSX or alternative trading platforms in Canada, if eligible, or by such other means as may be permitted by the TSX, for a one year period commencing on September 1, 2022 and ending on August 31, 2023. Gran Tierra may purchase up to 514,658 Shares on the TSX during any trading day, which represents approximately 25% of 2,058,635, which represents the average daily trading volume on the TSX for the most recently completed six calendar months prior to the TSX’s acceptance of the notice of the Bid. Gran Tierra may effect repurchases from time to time in the open market; provided that the aggregate purchase price under the Bid shall not exceed USD$37.5 million without further consideration of and approval by Gran Tierra’s board of directors.

Management of Gran Tierra believes that the Shares, at times, have been trading in a price range which does not adequately reflect their value in relation to Gran Tierra’s current operations, growth prospects and financial position. At such times, the purchase of Shares for cancellation or to satisfy awards granted under Gran Tierra’s 2007 Equity Incentive Plan may be advantageous to stockholders by increasing the value of the Shares.

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 Colombia and Ecuador. Gran Tierra is currently developing its existing portfolio of assets in Colombia and Ecuador and will continue to pursue additional growth opportunities that would further strengthen Gran Tierra’s portfolio. Gran Tierra’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. Information on Gran Tierra does not constitute a part of this press release. Investor inquiries may be directed to [email protected] or (403) 265-3221.

Gran Tierra’s U.S. Securities and Exchange Commission (“

SEC

”) filings are available on the SEC website at www.sec.gov. Gran Tierra’s Canadian securities regulatory filings are available on SEDAR at www.sedar.com and UK regulatory filings are available on the National Storage Mechanism (the “

NSM

”) website at https://data.fca.org.uk/#/nsm/nationalstoragemechanism. Gran Tierra’s filings on the SEC, SEDAR and NSM websites are not incorporated by reference into this press release.

Forward-Looking Statements and Advisories

This press release contains statements about future events that constitute forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and forward looking information within the meaning of applicable Canadian securities laws (collectively, “

forward-looking statements

”). Such forward-looking statements include, but are not limited to, the belief of Gran Tierra’s management that the Bid will be advantageous to stockholders, potential purchases of the Shares for cancellation or redeployment under Gran Tierra’s 2007 Equity Incentive Plan, the potential value of the Bid for Gran Tierra’s stockholders and other benefits to be derived from the Bid. There can be no assurance as to how many Shares, if any, will ultimately be acquired by Gran Tierra.

The forward-looking statements contained in this news release are subject to risks, uncertainties and other factors that could cause actual results or outcomes to differ materially from those contemplated by the forward-looking statements, including, among others, unexpected changes in general market and economic conditions. Accordingly, readers should not place undue reliance on the forward-looking statements contained herein. Further information on potential factors that could affect Gran Tierra are included in risks detailed from time to time in Gran Tierra’s reports filed with the Securities and Exchange Commission, including, without limitation, under the caption “Risk Factors” in Gran Tierra’s Annual Report on Form 10-K filed February 23, 2022 and its subsequent quarterly reports on Form 10-Q. These filings are available on a Website maintained by the SEC at http://www.sec.gov and on SEDAR at www.sedar.com.

All forward-looking statements are made as of the date of this press release and the fact that this press release remains available does not constitute a representation by Gran Tierra that Gran Tierra believes these forward-looking statements continue to be true as of any subsequent date. Actual results may vary materially from the expected results expressed in forward-looking statements. Gran Tierra disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as expressly required by applicable securities laws. Gran Tierra’s forward-looking statements are expressly qualified in their entirety by this cautionary statement.

No Offer or Solicitation

The information in this press release is for informational purposes only and is neither an offer to purchase, nor a solicitation of an offer to sell, subscribe for or buy any securities or otherwise, nor shall there be any purchase in any jurisdiction in contravention of applicable law.

Contact Information:

For investor and media inquiries please contact:

Gary Guidry

President & Chief Executive Officer

Ryan Ellson

Executive Vice President & Chief Financial Officer

Rodger Trimble

Vice President, Investor Relations

+1-403-265-3221

[email protected]