 CALGARY, Alberta, Oct. 25, 2021 GLOBE NEWSWIRE -- Gran Tierra Energy Inc. Gran Tierra NYSE American:GTETSX:GTELSE:GTE , announces that the Company will release its 2021 third quarter financial and operating results on Monday, November 1, 2021, after market close. A conference call to discuss the 2021 third quarter results will be held at 11:00 a.m. Eastern Time 9:00 a.m. Mountain Time the following day, Tuesday November 2, 2021. Details of the conference call are as follows: 