FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Hardy David Eldon   2. Issuer Name and Ticker or Trading Symbol GRAN TIERRA ENERGY INC. [GTE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP Legal and General Counsel (Last) (First) (Middle) C/O GRAN TIERRA ENERGY INC., 200, 150 13 AVENUE SW 3. Date of Earliest Transaction (Month/Day/Year) 05/07/2016 (Street) CALGARY, A0 T2R 0V2 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/07/2016   M   35,001 A (1) 35,001 D   Common Stock 05/07/2016   D   35,001 D $ 2.7 0 D   Common Stock               54,527 I By Spouse

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(1)

05/07/2016

M

11,667

(2)

(2)

Common Stock

11,667

(1)

0

D

Restricted Stock Units

(1)

05/07/2016

M

23,334

(3)

(3)

Common Stock

23,334

(1)

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Hardy David Eldon C/O GRAN TIERRA ENERGY INC. 200, 150 13 AVENUE SW CALGARY, A0 T2R 0V2			VP Legal and General Counsel

Signatures

/s/ David Hardy		05/10/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Reflects vesting of shares subject to a restricted stock unit previously reported for which settlement was solely in cash.
(2)	Each restricted stock unit represents a contingent right to receive one share of Gran Tierra Energy Inc. common stock. The restricted stock units originally vested in three equal installments on March 1, 2015, March 1, 2016 and March 1, 2017. Due to an amendment of the Reporting Person's employment agreement, the remaining restricted stock units fully vested on May 7, 2016.
(3)	Each restricted stock unit represents a contingent right to receive one share of Gran Tierra Energy Inc. common stock. The restricted stock units originally vested in three equal installments on March 1, 2016, March 1, 2017 and March 1, 2018. Due to an amendment of the Reporting Person's employment agreement, the remaining restricted stock units fully vested on May 7, 2016.

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