Gran Tierra Energy Inc.

CALGARY, May 10 /CNW/ --
CALGARY, May 10 /CNW/ - Notification of live webcast event:

Gran Tierra Energy Inc. (TSX: GTE)

Live webcast presentation

Tuesday, May 17, 2011 9:55 AM ET

To listen and view this online event, please visit:

http://jetslides.tv/lobby/461 

The presentation will be available in an archived version at this link
for 30 days following the live presentation.

To view this news release in HTML

CALGARY, May 9 /CNW/ --
Quarter highlighted by additional reserve potential at the Moqueta field
and successful closing of Petrolifera Acquisition

CALGARY, May 9 /CNW/ - Gran Tierra Energy Inc. ('Gran Tierra Energy') (NYSE Amex: GTE) (TSX: GTE), a company focused on oil and gas exploration and production in South
America, today announced financial and operating results for the
quarter ended March 31, 2011.  All

CALGARY, May 4 /CNW/ --
CALGARY, May 4 /CNW/ - Gran Tierra Energy Inc. (NYSE AMEX: GTE; TSX: GTE) ('Gran Tierra Energy'), a company focused on oil and gas exploration and production in South
America, announced today that it plans to release its financial and
operating results the evening of Monday, May 9, 2011 and host its first
quarter 2011 results conference call on Tuesday, May 10, 2011 at 8:00
a.m. Mountain Time

CALGARY, April 11 /CNW/ --
Drilling additional wells to delineate reserves in Colombia, explore in Colombia and Peru, and manage
production in Argentina

CALGARY, April 11 /CNW/ - Gran Tierra Energy Inc. (NYSE AMEX: GTE; TSX: GTE) ('Gran Tierra Energy'), a company focused on oil and gas exploration and production in South
America, today announced capital spending plans on the recently
acquired Petrolifera Petroleum

CALGARY, April 6 /CNW/ --
San Angel Exploration Well Encounters Gas Shows, Testing Initiated;
Canangucho-1 Exploration Well Plugged and Abandoned and Moqueta-5
Delineation Well Expected to Spud This Week

CALGARY, April 6 /CNW/ - Gran Tierra Energy Inc. (NYSE AMEX: GTE; TSX: GTE) ('Gran Tierra Energy'), a company focused on oil and gas exploration and production in South
America, today announced a drilling and

CALGARY, March 18 /CNW/ --
Acquisition Adds Substantial Underdeveloped Assets to Portfolio in
Colombia, Peru and Argentina

CALGARY, March 18 /CNW/ - Gran Tierra Energy Inc. (NYSE AMEX: GTE; TSX: GTE) ('Gran Tierra Energy'), a company focused on oil and gas exploration and production in South
America, is pleased to announce the successful completion of its
acquisition of all the issued and outstanding common shares

CALGARY, March 7 /CNW/ --
Kanatari-1 in Peru finds reservoir but no oil; Moqueta-4 flows 1,674 barrels of oil per day without pumps

CALGARY, March 7 /CNW/ - Gran Tierra Energy Inc. (NYSE AMEX: GTE; TSX: GTE) ('Gran Tierra Energy'), a company focused on oil and gas exploration and production in South
America, today announced the Kanatari-1 exploration well in Peru
encountered a thick, excellent reservoir-quality