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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>UNITED
      STATES</strong></font></div>
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      AND EXCHANGE COMMISSION </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Washington,
      D.C. 20549 </strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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      <hr style="COLOR: black" align="center" noshade size="1" width="12%">&#160;<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
      REPORT </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Pursuant
      to Section 13 or 15(d) of the Securities Exchange Act of 1934
</strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Date
      of Report (Date of earliest event reported): June 29, 2006</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">
      <hr style="COLOR: black" align="center" noshade size="1" width="12%">
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>GRAN
      TIERRA ENERGY INC.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>(</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>f/k/a
      GOLDSTRIKE INC.</strong></font><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>)
      </strong></font></div>
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      name of registrant as specified in its charter) </strong></font></div>
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          <tr>
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            <td align="left" valign="bottom" width="1%">&#160;</td>
            <td align="left" valign="middle" width="25%">&#160;</td>
            <td align="left" valign="bottom" width="1%">&#160;</td>
            <td align="left" valign="middle" width="25%">&#160;</td>
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                or other jurisdiction</strong></font></div>
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                incorporation)</strong></font></div>
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                File Number)</strong></font></div>
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            </td>
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                Employer</strong></font></div>
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                Number)</strong></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>300,
                611 - 10</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><sup><strong>th</strong></sup></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>
                Avenue S.W.</strong></font></div>
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            <td valign="bottom" width="2%">&#160;</td>
            <td valign="middle" width="37%">&#160;</td>
          </tr>
          <tr>
            <td valign="top" width="39%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Calgary,
                Alberta, Canada</strong></font></div>
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            <td valign="top" width="37%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>T2R
                0B2</strong></font></div>
            </td>
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          <tr>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman"><strong>(Address
                of principal executive offices)</strong></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman"><strong>(Zip
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(403)
      265-3221</strong></font></div>
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      the
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      satisfy the filing obligation of the registrant under any of the following
      provisions (see General Instruction A.2. below): </font></div>
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                communications pursuant to Rule 425 under the Securities Act (17
                CFR
                230.425) </font></div>
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                material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
                240.14a-12) </font></div>
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                communications pursuant to Rule 14d-2(b) under the Exchange Act (17
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">
      <hr style="COLOR: black" align="center" noshade size="1" width="12%">
    </div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
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      </div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
      3.02</strong></font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>UNREGISTERED
      SALE OF EQUITY SECURITIES.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">As
      previously disclosed by Gran Tierra Energy Inc. (the &#8220;Company&#8221;) in its Current
      Report on Form 8-K filed with the Securities and Exchange Commission (the &#8220;SEC&#8221;)
      on June 21, 2006, the Company conducted an initial closing of its private
      offering (the &#8220;Offering&#8221;) of units (the &#8220;Units,&#8221; each Unit consisting of one
      share of common stock of the Company and one warrant to purchase one-half of
      a
      share of common stock of the Company for five years at a purchase price of
      $1.75
      per whole share) on June 20, 2006. In the June 20, 2006 closing, the Company
      sold 43,336,051 Units, deriving gross proceeds of $65,004,076.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      June
      29, 2006, the Company conducted a second closing of the Offering deriving
      additional gross proceeds of $5,454,944 from the sale of 3,636,629 additional
      Units. Units sold in this second closing were sold pursuant to that certain
      Securities Purchase Agreement, dated as of June 20, 2006, by and among the
      Company and such investors, a form of which was attached as Exhibit 10.20 to
      the
      Company&#8217;s Current Report on Form 8-K filed on June 21, 2006. The investors
      additionally executed Subscription Agreements, dated as of June 20, 2006, with
      the Company in connection with their purchases of Units in the Offering. A
      form
      of the Subscription Agreement was attached as Exhibit Exhibit 10.21 to the
      Company&#8217;s Current Report on Form 8-K filed on June 21, 2006. A form of the
      warrants issued to the investors was attached as Exhibit 4.2 to the Company&#8217;s
      Current Report on Form 8-K filed on June 21, 2006.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      June
      30, 2006, the Company conducted a final closing of the Offering deriving
      additional gross proceeds of $4,540,980 from the sale of 3,027,320 additional
      Units. Units sold in this final closing were sold pursuant to that certain
      Securities Purchase Agreement, dated as of June 30, 2006, by and among the
      Company and such investors, a form of which is attached hereto as Exhibit 10.28.
      The investors additionally executed Subscription Agreements, dated as of June
      30, 2006, with the Company in connection with their purchases of Units in the
      Offering. A form of the Subscription Agreement is attached hereto as Exhibit
      10.29. A form of the warrants issued to the investors was attached as Exhibit
      4.2 to the Company&#8217;s Current Report on Form 8-K filed on June 21,
      2006.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Following
      the above-described closings on June 29, 2006 and June 30, 2006, the Company
      has
      completed the Offering and has sold a total of 50,000,000 Units for gross
      proceeds totaling $75,000,000. In the Offering, Deutsche Bank, Sanders Morris
      Harris Inc. and Canaccord Capital Corporation acted as placement agents and
      earned commissions of $2,205,582, $2,375,644 and $454,097, respectively.
</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
      to registration rights agreements among the Company and the investors in the
      Offering, the Company has committed to file a registration statement covering
      the shares of Common Stock issued in connection with the Offering, the warrants
      issued in the Offering and the shares of Common Stock underlying the warrants,
      within 75 days of June 20, 2006. The Company shall use its reasonable efforts
      to
      cause such registration statement to become effective no later than 120 days
      after the date it is filed, unless the registration statement is subject to
      review by the SEC, in which case the Company will have 150 days from the filing
      date in which to have the registration statement declared effective. The Company
      will be required to maintain the effectiveness of such registration statement
      until all shares registered thereunder have been sold or until the holding
      period of Rule 144(k) of the Securities Act has been satisfied with respect
      to
      all of the shares of Common Stock (including the shares underlying the warrants)
      issued in the Offering, whichever is earlier. The registration rights agreements
      provide that the Company will be liable for customary penalties if the
      registration statement is not effective on the date by which the Company is
      required to cause it to become effective, or if the Company fails to maintain
      the effectiveness of the registration statement for the require period.
</font></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      foregoing description of the registration rights agreements is qualified in
      its
      entirety by reference to each of the registration rights agreements. The
      registration rights agreements executed with the investors in the June 20,
      2006
      and June 29, 2006 closings were filed as Exhibits 10.23, 10.24 and 10.25 to
      the
      Company&#8217;s Current Report on Form 8-K, filed with the SEC on June 21, 2006. A
      form of the Registration Rights Agreement executed with each of the investors
      in
      the June 30, 2006 closing is attached hereto as Exhibit 10.30. Each of the
      above-described registration rights agreements is incorporated herein by
      reference.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">No
      underwriters were involved in connection with the sale of the securities
      described above.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
      9.01.</strong></font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>FINANCIAL
      STATEMENTS AND EXHIBITS.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(d)</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Exhibits.</font></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="top" width="12%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                No.</strong></font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.28</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Securities Purchase Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.29</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Subscription Agreement, dated as of June 30, 2006, by and among
                Gran
                Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of the
                Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.30</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Registration Rights Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">99.1</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press
                Release of Gran Tierra Energy Inc., dated July 5,
                2006.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SIGNATURES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
      accordance with 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.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div align="left">
      <table border="0" cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Gran
                Tierra Energy Inc</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">By:</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
                /s/ James Hart</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Name:
                James Hart</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Title:
                Chief Financial Officer</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="60%">&#160;</td>
            <td align="left" valign="top" width="40%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date:
                July 5, 2006</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>EXHIBIT
      INDEX</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="top" width="12%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                No.</strong></font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.28</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Securities Purchase Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.29</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Subscription Agreement, dated as of June 30, 2006, by and among
                Gran
                Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of the
                Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">10.30</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                of Registration Rights Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering. </font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">99.1</font></div>
            </td>
            <td width="5%">&#160;</td>
            <td align="left" valign="top" width="58%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press
                Release of Gran Tierra Energy Inc., dated July 5,
                2006.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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{"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": "333-111656", "film-number": "06944119"}, "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"}]}
Unassociated Document
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 29, 2006
GRAN
      TIERRA ENERGY INC.
(
f/k/a
      GOLDSTRIKE INC.
)
(Exact
      name of registrant as specified in its charter)
Nevada
333-111656
98-0479924
(State
                or other jurisdiction
of
                incorporation)
(Commission
                File Number)
(I.R.S.
                Employer
Identification
                Number)
300,
                611 - 10
th
Avenue S.W.
Calgary,
                Alberta, Canada
T2R
                0B2
(Address
                of principal executive offices)
(Zip
                Code)
(403)
      265-3221
(Registrant's
      telephone number, including area code)
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
      3.02
UNREGISTERED
      SALE OF EQUITY SECURITIES.
As
      previously disclosed by Gran Tierra Energy Inc. (the "Company") in its Current
      Report on Form 8-K filed with the Securities and Exchange Commission (the "SEC")
      on June 21, 2006, the Company conducted an initial closing of its private
      offering (the "Offering") of units (the "Units," each Unit consisting of one
      share of common stock of the Company and one warrant to purchase one-half of
      a
      share of common stock of the Company for five years at a purchase price of
      $1.75
      per whole share) on June 20, 2006. In the June 20, 2006 closing, the Company
      sold 43,336,051 Units, deriving gross proceeds of $65,004,076.
On
      June
      29, 2006, the Company conducted a second closing of the Offering deriving
      additional gross proceeds of $5,454,944 from the sale of 3,636,629 additional
      Units. Units sold in this second closing were sold pursuant to that certain
      Securities Purchase Agreement, dated as of June 20, 2006, by and among the
      Company and such investors, a form of which was attached as Exhibit 10.20 to
      the
      Company's Current Report on Form 8-K filed on June 21, 2006. The investors
      additionally executed Subscription Agreements, dated as of June 20, 2006, with
      the Company in connection with their purchases of Units in the Offering. A
      form
      of the Subscription Agreement was attached as Exhibit Exhibit 10.21 to the
      Company's Current Report on Form 8-K filed on June 21, 2006. A form of the
      warrants issued to the investors was attached as Exhibit 4.2 to the Company's
      Current Report on Form 8-K filed on June 21, 2006.
On
      June
      30, 2006, the Company conducted a final closing of the Offering deriving
      additional gross proceeds of $4,540,980 from the sale of 3,027,320 additional
      Units. Units sold in this final closing were sold pursuant to that certain
      Securities Purchase Agreement, dated as of June 30, 2006, by and among the
      Company and such investors, a form of which is attached hereto as Exhibit 10.28.
      The investors additionally executed Subscription Agreements, dated as of June
      30, 2006, with the Company in connection with their purchases of Units in the
      Offering. A form of the Subscription Agreement is attached hereto as Exhibit
      10.29. A form of the warrants issued to the investors was attached as Exhibit
      4.2 to the Company's Current Report on Form 8-K filed on June 21,
      2006.
Following
      the above-described closings on June 29, 2006 and June 30, 2006, the Company
      has
      completed the Offering and has sold a total of 50,000,000 Units for gross
      proceeds totaling $75,000,000. In the Offering, Deutsche Bank, Sanders Morris
      Harris Inc. and Canaccord Capital Corporation acted as placement agents and
      earned commissions of $2,205,582, $2,375,644 and $454,097, respectively.
Pursuant
      to registration rights agreements among the Company and the investors in the
      Offering, the Company has committed to file a registration statement covering
      the shares of Common Stock issued in connection with the Offering, the warrants
      issued in the Offering and the shares of Common Stock underlying the warrants,
      within 75 days of June 20, 2006. The Company shall use its reasonable efforts
      to
      cause such registration statement to become effective no later than 120 days
      after the date it is filed, unless the registration statement is subject to
      review by the SEC, in which case the Company will have 150 days from the filing
      date in which to have the registration statement declared effective. The Company
      will be required to maintain the effectiveness of such registration statement
      until all shares registered thereunder have been sold or until the holding
      period of Rule 144(k) of the Securities Act has been satisfied with respect
      to
      all of the shares of Common Stock (including the shares underlying the warrants)
      issued in the Offering, whichever is earlier. The registration rights agreements
      provide that the Company will be liable for customary penalties if the
      registration statement is not effective on the date by which the Company is
      required to cause it to become effective, or if the Company fails to maintain
      the effectiveness of the registration statement for the require period.
The
      foregoing description of the registration rights agreements is qualified in
      its
      entirety by reference to each of the registration rights agreements. The
      registration rights agreements executed with the investors in the June 20,
      2006
      and June 29, 2006 closings were filed as Exhibits 10.23, 10.24 and 10.25 to
      the
      Company's Current Report on Form 8-K, filed with the SEC on June 21, 2006. A
      form of the Registration Rights Agreement executed with each of the investors
      in
      the June 30, 2006 closing is attached hereto as Exhibit 10.30. Each of the
      above-described registration rights agreements is incorporated herein by
      reference.
No
      underwriters were involved in connection with the sale of the securities
      described above.
ITEM
      9.01.
FINANCIAL
      STATEMENTS AND EXHIBITS.
(d)
Exhibits.
Exhibit
                No.
Description
10.28
Form
                of Securities Purchase Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering.
10.29
Form
                of Subscription Agreement, dated as of June 30, 2006, by and among
                Gran
                Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of the
                Offering.
10.30
Form
                of Registration Rights Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering.
99.1
Press
                Release of Gran Tierra Energy Inc., dated July 5,
                2006.
SIGNATURES
In
      accordance with 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.
Gran
                Tierra Energy Inc
.
By:
/s/ James Hart
Name:
                James Hart
Title:
                Chief Financial Officer
Date:
                July 5, 2006
EXHIBIT
      INDEX
Exhibit
                No.
Description
10.28
Form
                of Securities Purchase Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering.
10.29
Form
                of Subscription Agreement, dated as of June 30, 2006, by and among
                Gran
                Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of the
                Offering.
10.30
Form
                of Registration Rights Agreement, dated as of June 30, 2006, by and
                among
                Gran Tierra Energy Inc. and the investors in the June 30, 2006 closing
                of
                the Offering.
99.1
Press
                Release of Gran Tierra Energy Inc., dated July 5,
                2006.