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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section 13 or 15(d) of the</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Securities Exchange Act of 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Date of Report (Date of earliest event
reported): </B>June 27, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>GRAN TIERRA ENERGY INC.</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Exact name of Registrant as specified
in its charter)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font-family: Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 52%; font-size: 10pt; font-weight: bold; text-align: center; padding-right: 0; padding-left: 0">Nevada</TD>
    <TD STYLE="width: 48%; font-size: 10pt; font-weight: bold; text-align: center; padding-right: 0; padding-left: 0">98-0479924</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; font-weight: bold; text-align: center; padding-right: 0; padding-left: 0">(State or other jurisdiction of incorporation)</TD>
    <TD STYLE="font-size: 10pt; font-weight: bold; text-align: center; padding-right: 0; padding-left: 0">(I.R.S. Employer Identification No.)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Commission file number:</B> 000-34018</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">300, 625 - 11th Avenue S.W.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Calgary, Alberta, Canada T2R 0E1</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Address of principal executive offices
and zip code)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registrant's telephone number, including
area code: </B>(403) 265-3221</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[ ] Written communications pursuant to Rule 425 under the Securities
Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange
Act (17 CFR 240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[ ] Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[ ] Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5.02. Departure of Directors or Principal Officers;
Election of Directors; Appointment of Principal Officers; Compensatory Arrangements of Certain Officers</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">On June 27, 2012, the stockholders of Gran Tierra Energy Inc.
approved Gran Tierra Energy&rsquo;s 2007 Equity Incentive Plan, as amended and restated, referred to as the &ldquo;<B><I>Incentive
Plan</I></B>,&rdquo; to make the following changes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 48px; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 24px; padding-right: 0; padding-left: 0">&middot;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">increase the aggregate number of shares issuable under the Incentive Plan from 23,306,100 shares to 39,806,100;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 48px; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 24px; padding-right: 0; padding-left: 0">&middot;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">provide that the number of shares available for issuance under the Incentive Plan will be reduced by one share for each share of common stock issued pursuant to an option or stock appreciation right and 1.55 shares for each share of common stock issued pursuant to a Full Value Award (generally an award other than an option or stock appreciation right, as defined below); and</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 48px; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 24px; padding-right: 0; padding-left: 0">&middot;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">provide that shares forfeited in connection with any stock awards and shares not issued or reacquired to satisfy tax withholding obligations in connection with Full Value Awards will again become available for issuance and clarify that in connection with options and stock appreciation rights, shares not issued or reacquired to satisfy tax withholding obligations, shares used as consideration for the exercise of options or stock appreciation rights or shares repurchased by Gran Tierra Energy on the open market with the proceeds of option or stock appreciation right exercise price will not again become available for issuance under the Incentive Plan.</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Incentive Plan provides for the grant of stock options,
restricted stock awards, stock appreciation rights, restricted stock units and other stock awards. Stock options granted under
the Incentive Plan are not intended to qualify as incentive stock options within the meaning of Section 422 of the Internal Revenue
Code of 1986, as amended.&nbsp;&nbsp;Stock appreciation rights granted under the Incentive Plan may be tandem rights, concurrent
rights or independent rights. To date, Gran Tierra has granted only stock options under the Incentive Plan.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The above description of the Incentive Plan is a summary only
and is qualified in its entirety by reference to the complete text of the Incentive Plan, which is appended to Gran Tierra Energy&rsquo;s
Proxy Statement filed with the Securities and Exchange Commission on April 30, 2012, and available on the SEC&rsquo;s website.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5.07.&#9;Submission of Matters to a Vote of Security
Holders</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Gran Tierra Energy Inc. held its Annual Meeting of Stockholders
on June 27, 2012. The following is a brief description of each matter voted upon at the Annual Meeting, as well as the final tally
of the number of votes cast for or withheld for each director, and for or against each other matter, and the number of abstentions
and broker non-votes with respect to each matter. A more complete description of each matter is set forth in the Gran Tierra Energy&rsquo;s
definitive proxy statement filed with the Securities and Exchange Commission on April 30, 2012 (the &ldquo;<B><I>Proxy Statement</I></B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">1. Gran Tierra Energy&rsquo;s stockholders
elected each of the directors proposed by Gran Tierra Energy for re-election, to serve until Gran Tierra Energy&rsquo;s 2013 Annual
Meeting of Stockholders or until his respective successor has been elected and qualified. The tabulation of votes on this matter
was as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="width: 80%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 63%; padding: 5.75pt 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Nominee</B></P></TD>
    <TD STYLE="width: 19%; padding: 5.75pt 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Shares
Voted For</B>&nbsp;</P></TD>
    <TD STYLE="width: 18%; padding: 5.75pt 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Shares
Withheld&nbsp;</B></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding: 6pt 0">Dana Coffield</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">167,987,352</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">386,486</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding: 6pt 0">Jeffrey Scott</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">167,953,319</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">420,519</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding: 6pt 0">Verne Johnson</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">167,965,438</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">408,400</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding: 6pt 0">Nicholas G. Kirton</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">167,637,366</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">736,472</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding: 6pt 0">Ray Anthony</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">164,365,336</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">4,008,502</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding: 6pt 0">J. Scott Price</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">123,500,754</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">44,873,084</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding: 6pt 0">Gerald Macey</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">167,633,806</TD>
    <TD STYLE="padding: 6pt 0; text-align: right">740,032</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">There were 35,297,136 broker non-votes for
this proposal.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&#9;</B>2.&#9; Gran Tierra Energy&rsquo;s stockholders approved
Gran Tierra Energy&rsquo;s 2007 Equity Incentive Plan, as amended and restated, as described in the Proxy Statement. The tabulation
of votes on this matter was as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="width: 90%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="width: 75%; padding-right: 0; padding-left: 0">Shares voted for:</TD>
    <TD STYLE="width: 25%; padding-right: 0; padding-left: 0; text-align: right">141,116,918</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares voted against:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">27,171,163</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares abstaining:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">85,757</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Broker non-votes</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">35,297,136</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&#9;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">3.&#9; Gran Tierra Energy&rsquo;s stockholders approved,
on an advisory basis, a resolution approving the compensation of Gran Tierra Energy&rsquo;s named executive officers, as disclosed
in the Proxy Statement. The tabulation of votes on this matter was as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="width: 90%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="width: 75%; padding-right: 0; padding-left: 0">Shares voted for:</TD>
    <TD STYLE="width: 25%; padding-right: 0; padding-left: 0; text-align: right">166,147,880</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares voted against:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">2,099,735</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares abstaining:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">126,223</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Broker non-votes</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">35,297,136</TD></TR>
</TABLE>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&#9;4.&#9; Gran Tierra Energy&rsquo;s stockholders ratified
the selection of Deloitte &amp; Touche LLP as the independent registered public accounting firm of Gran Tierra Energy for its fiscal
year ending December&nbsp;31, 2012. The tabulation of votes on this matter was as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="width: 90%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="width: 75%; padding-right: 0; padding-left: 0">Shares voted for:</TD>
    <TD STYLE="width: 25%; padding-right: 0; padding-left: 0; text-align: right">203,227,218</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares voted against:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">296,584</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding-right: 0; padding-left: 0">Shares abstaining:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">147,172</TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="padding-right: 0; padding-left: 0">Broker non-votes</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-align: right">0</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Pursuant to the requirements of the Securities Exchange Act
of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">Dated: June 29, 2012</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0">GRAN TIERRA ENERGY INC.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; width: 50%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 5%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 45%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">By:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; border-bottom: Black 1pt solid">/s/ James Rozon</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">James Rozon</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Chief Financial Officer</TD></TR>
</TABLE>
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[{"type": "8-K", "sequence": "1", "filename": "v317450_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 23882}]
{"company-data": {"conformed-name": "GRAN TIERRA ENERGY, INC.", "cik": "0001273441", "assigned-sic": "1311", "irs-number": "000000000", "state-of-incorporation": "NV", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-34018", "film-number": "12936611"}, "business-address": {"street1": "300, 611-10TH AVENUE S.W.", "city": "CALGARY", "state": "A0", "zip": "T2R 0B2", "phone": "(403) 265-3221"}, "mail-address": {"street1": "300, 611-10TH AVENUE S.W.", "city": "CALGARY", "state": "A0", "zip": "T2R 0B2"}, "former-company": [{"former-conformed-name": "GOLDSTRIKE INC", "date-changed": "20040113"}, {"former-conformed-name": "GOLKSTRIKE INC", "date-changed": "20031216"}]}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (Date of earliest event
reported):
June 27, 2012
GRAN TIERRA ENERGY INC.
(Exact name of Registrant as specified
in its charter)
Nevada
98-0479924
(State or other jurisdiction of incorporation)
(I.R.S. Employer Identification No.)
Commission file number:
000-34018
300, 625 - 11th Avenue S.W.
Calgary, Alberta, Canada T2R 0E1
(Address of principal executive offices
and zip code)
Registrant's telephone number, including
area code:
(403) 265-3221
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):
[ ] Written communications pursuant to Rule 425 under the Securities
Act (17 CFR 230.425)
[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange
Act (17 CFR 240.14a-12)
[ ] Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))
[ ] Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))
Item 5.02. Departure of Directors or Principal Officers;
Election of Directors; Appointment of Principal Officers; Compensatory Arrangements of Certain Officers
On June 27, 2012, the stockholders of Gran Tierra Energy Inc.
approved Gran Tierra Energy's 2007 Equity Incentive Plan, as amended and restated, referred to as the "
Incentive
Plan
," to make the following changes:
·
increase the aggregate number of shares issuable under the Incentive Plan from 23,306,100 shares to 39,806,100;
·
provide that the number of shares available for issuance under the Incentive Plan will be reduced by one share for each share of common stock issued pursuant to an option or stock appreciation right and 1.55 shares for each share of common stock issued pursuant to a Full Value Award (generally an award other than an option or stock appreciation right, as defined below); and
·
provide that shares forfeited in connection with any stock awards and shares not issued or reacquired to satisfy tax withholding obligations in connection with Full Value Awards will again become available for issuance and clarify that in connection with options and stock appreciation rights, shares not issued or reacquired to satisfy tax withholding obligations, shares used as consideration for the exercise of options or stock appreciation rights or shares repurchased by Gran Tierra Energy on the open market with the proceeds of option or stock appreciation right exercise price will not again become available for issuance under the Incentive Plan.
The Incentive Plan provides for the grant of stock options,
restricted stock awards, stock appreciation rights, restricted stock units and other stock awards. Stock options granted under
the Incentive Plan are not intended to qualify as incentive stock options within the meaning of Section 422 of the Internal Revenue
Code of 1986, as amended.  Stock appreciation rights granted under the Incentive Plan may be tandem rights, concurrent
rights or independent rights. To date, Gran Tierra has granted only stock options under the Incentive Plan.
The above description of the Incentive Plan is a summary only
and is qualified in its entirety by reference to the complete text of the Incentive Plan, which is appended to Gran Tierra Energy's
Proxy Statement filed with the Securities and Exchange Commission on April 30, 2012, and available on the SEC's website.
Item 5.07.	Submission of Matters to a Vote of Security
Holders
Gran Tierra Energy Inc. held its Annual Meeting of Stockholders
on June 27, 2012. The following is a brief description of each matter voted upon at the Annual Meeting, as well as the final tally
of the number of votes cast for or withheld for each director, and for or against each other matter, and the number of abstentions
and broker non-votes with respect to each matter. A more complete description of each matter is set forth in the Gran Tierra Energy's
definitive proxy statement filed with the Securities and Exchange Commission on April 30, 2012 (the "
Proxy Statement
").
1. Gran Tierra Energy's stockholders
elected each of the directors proposed by Gran Tierra Energy for re-election, to serve until Gran Tierra Energy's 2013 Annual
Meeting of Stockholders or until his respective successor has been elected and qualified. The tabulation of votes on this matter
was as follows:
Nominee
Shares
Voted For
Shares
Withheld
Dana Coffield
167,987,352
386,486
Jeffrey Scott
167,953,319
420,519
Verne Johnson
167,965,438
408,400
Nicholas G. Kirton
167,637,366
736,472
Ray Anthony
164,365,336
4,008,502
J. Scott Price
123,500,754
44,873,084
Gerald Macey
167,633,806
740,032
There were 35,297,136 broker non-votes for
this proposal.
2.	 Gran Tierra Energy's stockholders approved
Gran Tierra Energy's 2007 Equity Incentive Plan, as amended and restated, as described in the Proxy Statement. The tabulation
of votes on this matter was as follows:
Shares voted for:
141,116,918
Shares voted against:
27,171,163
Shares abstaining:
85,757
Broker non-votes
35,297,136
3.	 Gran Tierra Energy's stockholders approved,
on an advisory basis, a resolution approving the compensation of Gran Tierra Energy's named executive officers, as disclosed
in the Proxy Statement. The tabulation of votes on this matter was as follows:
Shares voted for:
166,147,880
Shares voted against:
2,099,735
Shares abstaining:
126,223
Broker non-votes
35,297,136
4.	 Gran Tierra Energy's stockholders ratified
the selection of Deloitte & Touche LLP as the independent registered public accounting firm of Gran Tierra Energy for its fiscal
year ending December 31, 2012. The tabulation of votes on this matter was as follows:
Shares voted for:
203,227,218
Shares voted against:
296,584
Shares abstaining:
147,172
Broker non-votes
0
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act
of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Dated: June 29, 2012
GRAN TIERRA ENERGY INC.
By:
/s/ James Rozon
James Rozon
Chief Financial Officer