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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1273441	Gran Tierra Energy Inc.	GTE	Crude Petroleum & Natural Gas (1311)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1469328	Dias Cesar Julio Moreira	C/O Gran Tierra Energy Inc. 300, 625 - 11Th Avenue Sw Calgary A0 T2R 0E1	Pres., Gt Brasil Ltda.	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-03-08	75,000	$3.95	75,000	No	4	X	Direct
Common Stock	Disposition	2012-03-08	75,000	$6.12	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	X	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Rt to Buy)	Disposition	2012-03-08	75,000	$0.00	75,000	$3.95

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
50,000	2010-09-08	2019-09-07	No	4	X	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,000	Indirect	By Saba Investment Holdings Ltd.

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.10 to $6.17,inclusive. The reporting person undertakes to provide to Gran Tierra Energy Inc., any security holder of Gran Tierra Energy Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.
1/3rd of the option shares shall vest on 9/8/10, an additional 1/3rd of the option shares shall vest on 9/8/11 and the balance of the option shares shall vest on 9/8/12.