CALGARY, ALBERTA--(Marketwired - July 28, 2017) - Gran Tierra Energy Inc. ("Gran Tierra") (NYSE MKT:GTE)(TSX:GTE), announces that the Company will release its 2017 second quarter financial and operating results on Thursday, August 3, 2017, after market close. A conference call to discuss the 2017 second quarter results will be held at 11:00 a.m. Eastern Time (9:00 a.m. Mountain Time) the following day, Friday, August 4, 2017. Details of the conference call are as follows:

Interested parties may also access the live webcast on the investor relations page of Gran Tierra's website at www.grantierra.com. An archive of the webcast will be available on Gran Tierra's website until August 11, 2017. In addition, an audio replay of the conference call will be available following the call until August 8, 2017. To access the replay, dial toll-free 1-855-859-2056 (North America), or 1-404-537-3406 (outside of Canada and USA), Conference ID: 57318699.

About Gran Tierra Energy Inc.

Gran Tierra Energy Inc. together with its subsidiaries is an independent international energy company focused on oil and natural gas exploration and production in Colombia. The Company also has business activities in Peru.

Gran Tierra's Securities and Exchange Commission filings are available on a web site maintained by the Securities and Exchange Commission at http://www.sec.gov and on SEDAR at http://www.sedar.com.