Washington, D.C. 20549 





(Rule 14a-101)  


Proxy Statement Pursuant to Section 14(a) of  

the Securities Exchange Act of 1934  

(Amendment No.      )


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o Preliminary Proxy Statement
o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o Definitive Proxy Statement
o Definitive Additional Materials
x Soliciting Material under §240.14a-12

Gran Tierra Energy Inc. 

(Name of Registrant as Specified In Its Charter)


West Face SPV (Cayman) I L.P. 

West Face Capital Inc. 

West Face SPV (Cayman) General Partners Inc. 

West Face Long Term Opportunities Global Master L.P. 

Gregory A. Boland 

Peter Dey 

Ryan Ellson 

James Evans 

Gary S. Guidry 

Robert B. Hodgins 

Ronald W. Royal 

David P. Smith 

Brooke N. Wade 

Laurence West 

Dulat Zhurgenbay


(Name of Person(s) Filing Proxy Statement, if other than the Registrant)


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On April 28, 2015, West Face Capital Inc. (“West Face Capital”) released its presentation entitled “Proposal for Change.” The presentation is attached hereto as Exhibit 1 and may be provided to stockholders of Gran Tierra Energy, Inc. by West Face Capital, West Face SPV (Cayman) I L.P., West Face SPV (Cayman) General Partners Inc., West Face Long Term Opportunities Global Master L.P., Gregory A. Boland, Peter Dey, Ryan Ellson, James Evans, Gary S. Guidry, Robert B. Hodgins, Ronald W. Royal, David P. Smith, Brooke N. Wade, Laurence West and Dulat Zhurgenbay. This presentation is being filed by West Face Capital in HTML and PDF formats as a convenience for readers.