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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>
    <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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    <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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    <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>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>
    <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>Date
      of Report (Date of earliest event reported): June 15, 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="10%">
    </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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      <hr style="COLOR: black" align="center" noshade size="1" width="10%">
    </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>
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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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                Employer</strong></font></div>
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                Number)</strong></font></div>
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          <tr>
            <td valign="middle" width="39%">
              <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="middle" width="37%">&#160;</td>
          </tr>
          <tr>
            <td valign="top" width="39%">
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                Alberta, Canada</strong></font></div>
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                0B2</strong></font></div>
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            </td>
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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>(Zip
                Code)</strong></font></div>
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      265-3221</strong></font></div>
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      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): </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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          <tr>
            <td align="left" valign="top" width="3%">
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    <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
      1.01.</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>ENTRY
      INTO MATERIAL DEFINITIVE AGREEMENT.</strong></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">Reference
      is made to the disclosures regarding the securities purchase agreements,
      subscription agreements&#160;and registration rights agreements executed by the
      Company on June 20, 2006, which disclosures are set forth under Items
      2.01,&#160;3.02 and 8.01 of this Current Report on Form 8-K, and which
      disclosures are 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">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><strong><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
      2.01. COMPLETION OF ACQUISITION OR DISPOSITION OF ASSETS.</font></strong></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</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">As
      previously disclosed in the Company&#8217;s Current Report on Form 8-K, filed with the
      Securities and Exchange Commission on June 1, 2006, the Company entered into
      a
      Securities Purchase Agreement, dated as of May 25, 2006, with Crosby Capital,
      LLC (&#8220;Crosby&#8221;) to acquire all of the limited partnership interests of Argosy
      Energy International (&#8220;Argosy&#8221;) and all of the issued and outstanding capital
      stock of Argosy Energy Corp. (the &#8220;Argosy Acquisition&#8221;). On June 20, 2006, the
      Company closed the Argosy Acquisition and paid consideration to Crosby
      consisting of $37,500,000 cash, 870,647 shares of the Company&#8217;s Common Stock and
      overriding and net profits interests in certain of Argosy&#8217;s assets, valued at
      $1,000,000. The Securities Purchase Agreement between the Company and Crosby
      was
      filed with the Securities and Exchange Commission on June 1, 2006 as Exhibit
      10.18 to the Company&#8217;s Current Report on Form 8-K. </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">The
      Company additionally agreed to register the 870,647 shares of its Common Stock
      issued as consideration to Crosby in the Argosy Acquisition. On June 20, 2006,
      the Company executed a registration rights agreement with Crosby, pursuant
      to
      which the Company has committed to file a registration statement covering such
      shares within 45 days of the effective date of the registration statement
      covering the securities issued to investors in the Offering. The Company shall
      use 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 registration exemption provided in Rule 144(k) promulgated
      under the Securities Act has been satisfied with respect to all of the shares
      of
      Common Stock issued to Crosby, 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><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>.</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      The
      foregoing description is qualified by the Registration Rights Agreement by
      and
      between the Company and Crosby attached hereto as Exhibit 10.27. </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#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>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: 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">On
      June
      20, 2006 (the &#8220;Closing Date&#8221;), Gran Tierra Energy Inc. (the &#8220;Company&#8221;) completed
      the sale of 43,336,051 units of its securities (the &#8220;Units&#8221;), deriving gross
      proceeds of $65,004,076 (the &#8220;Offering&#8221;). Each Unit consists of one share of the
      Company&#8217;s common stock, par value $0.001 (the &#8220;Common Stock), and a warrant to
      purchase one-half share of the Company&#8217;s Common Stock for a period of five years
      at an exercise price of $1.75 per whole share. The Offering was exempt from
      registration pursuant to Section 4(2) of the Securities Act of 1933, as amended,
      and Rule 506 of Regulation D promulgated thereunder. The Units were offered
      and
      sold to &#8220;accredited investors,&#8221; as that term is defined under Rule 501 of
      Regulation D, some of which were institutional investors, and to less than
      35
      unaccredited investors, in compliance with Rule 506. Deutsche Bank and Sanders
      Morris Harris Inc. acted as placement agents in the Offering and earned
      commissions of $2,205,582 and $2,455,582, respectively.</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">Units
      consisting of 24,567,995 shares of Common Stock and warrants for the purchase
      of
      12,283,998 shares of Common Stock were sold to institutional investors (the
      &#8220;Institutional Investors&#8221;) pursuant to that certain Securities Purchase
      Agreement by and between the Company and such institutional investors and dated
      as of June 20, 2006, the form of which is attached hereto as Exhibit 10.19.
      A
      form of the warrants issued to the Institutional Investors is attached hereto
      as
      Exhibit 4.2.</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: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Units
      consisting of 18,101,389 shares of Common Stock and warrants for the purchase
      of
      9,050,695 shares of Common Stock were sold to retail investors (the &#8220;Retail
      Investors&#8221;) pursuant to that certain Securities Purchase Agreement, dated as of
      June 20, 2006, by and between the Company and such investors, a form of which
      is
      attached hereto as Exhibit 10.20. The retail 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 is attached hereto as Exhibit 10.21. A form of the
      warrants issued to the Retail Investors is attached hereto as Exhibit
      4.2.</font></div>
    <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">Units
      consisting of 666,667 shares of Common Stock and warrants for the purchase
      of
      333,334 shares of Common Stock were sold to CD Investment Partners, Ltd. (&#8220;CD
      Investment&#8221;) pursuant to that certain Securities Purchase Agreement by and
      between the Company and CD Investment and dated as of June 20, 2006. The
      Securities Purchase Agreement between the Company and CD Investment is attached
      hereto as Exhibit 10.22. A form of the warrant issued to CD Investment is
      attached hereto as Exhibit 4.3.</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: 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 from the Closing Date. The Company shall use 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>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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    <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"><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 agreements, each of which is attached
      as an
      Exhibit to this Current Report on Form 8-K. A form of the Registration Rights
      Agreement, dated as of June 20, 2006, by and among the Company and the
      Institutional Investors, is attached hereto as Exhibit 10.23. A form of the
      Registration Rights Agreement, dated as of June 20, 2006, by and among the
      Company and the Retail Investors, is attached hereto as Exhibit 10.24. The
      Registration Rights Agreement, dated as of June 20, 2006, by and between the
      Company and CD Investment, is attached hereto as Exhibit 10.25. 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: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
      connection with the Offering and as of the Closing Date, all of the Company&#8217;s
      executive officers and directors entered into a Lock-Up Agreement with Sanders
      Morris Harris Inc., pursuant to which the executive officers and directors
      agreed not to offer, sell or otherwise dispose of any shares of the Company&#8217;s
      capital stock or any securities convertible into, exercisable or exchangeable
      for such capital stock, without the consent of the Sanders Morris Harris Inc.,
      during the period commencing on the Closing Date and ending either 180 days
      after the closing of the Offering or upon the effective date of the registration
      statement covering the resale of the Units, whichever is earlier. The Lock-Up
      Agreement is attached hereto as Exhibit 10.26 and 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="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
      5.03.</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>AMENDMENT
      TO BYLAWS. </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="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      June
      15, 2006, the Company&#8217;s Board of Directors (the &#8220;Board&#8221;) unanimously approved
      the amendment and restatement of the Company&#8217;s bylaws (the &#8220;Amended and Restated
      Bylaws,&#8221; and the former bylaws herein referred to as the &#8220;Original Bylaws&#8221;) to
      be effective June 15, 2006. The Amended and Restated Bylaws, among other things,
      contain the following changes from the Original Bylaws:</font></div>
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          <tr valign="top" style="line-height: 1.25;">
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            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">A
                record date to determine stockholders entitled to notice of or to
                vote at
                any meeting of the stockholders shall not be more than 60 days nor
                less
                than 10 days before the date of such meeting, and such notice of
                a
                stockholder meeting shall be delivered to the stockholder within
                the same
                time period. The Original Bylaws required a record date to be set
                no more
                than 60 days before a stockholder meeting, but did not provide the
                minimum
                10-day requirement, and required notice of stockholder meetings to
                be sent
                to stockholders at least 10 days before the meeting, but did not
                limit the
                notice to 60 days prior to the
                meeting.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">A
                quorum at a stockholder meeting shall be the majority of the outstanding
                shares of the capital stock entitled to vote. The Original Bylaws
                provided
                that a quorum consisted of two stockholders present or being represented
                by proxy at a stockholder meeting.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Provides
                procedure for stockholders to give notice and propose business to
                be
                considered by stockholders at an annual meeting. The Original Bylaws
                did
                not provide such a procedure.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Directors
                shall be elected by a plurality of the votes cast by ballot. The
                Original
                Bylaws did not specify the required vote for the election of
                directors.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Provides
                for appointment of one or more inspectors of elections, and the duties
                thereof, which the Original Bylaws did not
                address.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div><br>
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        </div>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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        </div>
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      <div id="HDR">
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        </div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; 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">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">A
                stockholder may vote by proxy, but no proxy shall be voted after
                eleven
                months from its date, unless such proxy provides for a longer period.
                Also, a stockholder may revoke any proxy which is not irrevocable
                by
                attending the meeting and voting in person or by filing with the
                person
                recording the proceedings of the meeting an instrument in writing
                revoking
                the proxy or another duly executed proxy bearing a later date. The
                Original Bylaws did not set a default time period for the voting
                of a
                proxy and did provide a procedure for the revocation of a
                proxy.</font></div>
            </td>
          </tr>

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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
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              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Directors
                shall hold office until the next meeting of stockholders held for
                the
                purpose of electing the Board or until their successors have been
                duly
                elected and qualified, or until a director&#8217;s prior death, resignation or
                removal. The Original Bylaws did not provide for the continuation
                of the
                directorships if no stockholder meeting was held for the purpose
                of
                electing the Board.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Between
                successive meetings, directors have the power to appoint one or more
                additional directors to fill any vacancies and any director so appointed
                shall hold office until the next annual meeting of the Company or
                until
                his successor is duly elected and qualified but such director shall
                be
                eligible for election at the next meeting of stockholders held for
                the
                purpose of electing directors and the number of directors will be
                increased accordingly. The Original Bylaws limit the number of directors
                that can be appointed between successive annual meetings to no more
                than
                one-half of the number of directors fixed at the last stockholder
                meeting
                at which directors were elected.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
            <td style="width: 18pt;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Symbol, serif">&#183;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Provides
                notice requirements for regular and special meetings of the Board
                of
                Directors, and what is deemed to constitute such notice. The Original
                Bylaws did not contain such detail.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
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                director may be removed from office only for cause and only by the
                affirmative vote of at least 67% of the voting power of all of the
                outstanding voting stock. The Original Bylaws allowed a director
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                removed without cause by two-thirds vote of the
                stockholders.</font></div>
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                shall not receive any stated salary for their services as Directors
                or as
                members of any committees of the board of directors, but by resolution
                of
                the Board a fixed fee and the expenses of attendance may be allowed
                for
                attendance at each meeting. The Original Bylaws provided that remuneration
                may be determined from time to time by the Board, or if directors
                decide,
                by the stockholders.</font></div>
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          <tr valign="top" style="line-height: 1.25;">
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                the Chairman of the Board as an elected officer of the Company and
                provides for the duties of the officers of the Company. The Original
                Bylaws did not contain similar
                provisions.</font></div>
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          <tr valign="top" style="line-height: 1.25;">
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                fiscal year of the Company shall begin on the first day of January
                and end
                on the thirty-first day of December of each year. The Original Bylaws
                allowed the Board to determine the Company&#8217;s fiscal year from time to time
                without amending the Original
                Bylaws.</font></div>
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          <tr valign="top" style="line-height: 1.25;">
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                may be declared by the Board from time to time on its outstanding
                shares
                of capital stock, pursuant to the terms of the Company&#8217;s Articles of
                Incorporation. The Original Bylaws required the approval of the holders
                of
                a majority of the class or series of capital stock to be issued
                dividends.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
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                Chairman of the Board, President or any Vice President may appoint
                an
                attorney or agent of the Company, in the name of and on behalf of
                the
                Company, to cast the votes which the Company may be entitled to cast
                as
                the holder of stock or securities in any other corporation. The Original
                Bylaws did not contain a similar
                provision.</font></div>
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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="justify">&#160;</div>
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          <tr valign="top" style="line-height: 1.25;">
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                permissions and restrictions on conflict of interests involving directors
                of the&#160;Company, as addressed under Nevada law, are not included in
                the Amended and Restated Bylaws. Such provisions of Nevada law were
                summarized in the Original Bylaws.</font></div>
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      <div id="HDR">
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top" style="line-height: 1.25;">
            <td style="width: 18pt;">&#160;</td>
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                shall be provided to officers, directors and employees to the extent
                allowed under Nevada law. The Original Bylaws provided circumstances
                under
                which directors, officers and employees would be indemnified. The
                Amended
                and Restated Bylaws further allow for the advancement of expenses
                and
                provide that indemnification shall continue for persons who are no
                longer
                directors, officers or employees for actions taken while they were
                acting
                in such capacities, which was not provided for in the Original
                Bylaws.</font></div>
            </td>
          </tr>

      </table>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</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">The
      descriptions of the new provisions of the Amended and Restated Bylaws and the
      provisions of the Original Bylaws contained in this Current Report are qualified
      in their entirety by reference to the full text of the Company&#8217;s Amended and
      Restated Bylaws, a copy of which is attached hereto as Exhibit 3.5 and
      incorporated herein by reference.</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"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
      8.01.</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>OTHER
      EVENTS.</strong></font></div>
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    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
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        </div>
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    <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"><strong>Closing
      of the Golden Oil Transaction</strong></font></div>
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    <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">On
      May
      15, 2006, Gran Tierra Energy Argentina S.A., a subsidiary of the Company (&#8220;Gran
      Tierra Argentina&#8221;), entered into a Farm In Agreement with Golden Oil Corporation
      (&#8220;Golden Oil&#8221;) whereby Golden Oil agreed to assign Gran Tierra Argentina a 50%
      interest in the El Vinalar Block in the Noroeste Basin of Argentina, which
      encompasses both producing and prospective lands. On June 20, 2006, concurrent
      with the closing of the Offering, Gran Tierra Argentina initiated closing of
      its
      agreement with Golden Oil. Total consideration for the acquisition is $950,000
      and includes a commitment to fund up to $2.7 million of the cost of a planned
      sidetrack well. The agreement with Golden Oil contained standard
      representations, warranties and conditions to closing.</font></div>
    <div>&#160;</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"><strong>Press
      Release</strong></font></div>
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    <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
      Company announced the closing of its Offering, the closing of the Argosy
      Acquisition, and the closing of the Golden Oil transaction in a press release
      issued on June 21, 2006, a copy of which is filed herewith as Exhibit 99.1.
      </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"><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
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    <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">(a)
      Financial Statements of Business Acquired.</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: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      registrant intends to amend this Current Report on Form 8-K to include financial
      statements required under this Item 9.01 as soon as they are prepared, but
      in no
      event later than 71 calendar days after the deadline for filing this
      report</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.</font><br></div>
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      Exhibits.</font></div>
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          <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="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                No.</strong></font></div>
            </td>
            <td width="2%">&#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 bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">3.5</font></div>
            </td>
            <td width="2%">&#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">Amended
                and Restated Bylaws of Gran Tierra Energy Inc.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">4.2</font></div>
            </td>
            <td width="2%">&#160;</td>
            <td align="left" valign="top" width="58%">
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                of Warrant issued to institutional and retail investors in connection
                with
                the private offering on June 20, 2006.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">4.3</font></div>
            </td>
            <td width="2%">&#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">Warrant
                issued to CD Investment Partners, Ltd. in connection with the private
                offering on June 20, 2006.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.19</font></div>
            </td>
            <td width="2%">&#160;</td>
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                of Securities Purchase Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.20</font></div>
            </td>
            <td width="2%">&#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 20, 2006, by and
                among
                the Company and retail investors purchasing units of Gran Tierra
                Energy
                Inc. securities in a private offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.21</font></div>
            </td>
            <td width="2%">&#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 20, 2006, by and among
                Gran
                Tierra Energy Inc. and retail investors subscribing for units of
                Gran
                Tierra Energy Inc. securities in a private offering. </font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">&#160;</td>
            <td width="2%">&#160;</td>
            <td align="left" valign="top" width="58%">&#160;</td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.22</font></div>
            </td>
            <td width="2%">&#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">Securities
                Purchase Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.23</font></div>
            </td>
            <td width="2%">&#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 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.24</font></div>
            </td>
            <td width="2%">&#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 20, 2006, by and
                among
                Gran Tierra Energy Inc. and retail investors purchasing units of
                Gran
                Tierra Energy Inc. securities in a private offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.25</font></div>
            </td>
            <td width="2%">&#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">Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners,
                Ltd.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div>&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; 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>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.26</font></div>
            </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">Lock-Up
                Agreement, dated June 20, 2006, by and among Sanders Morris Harris
                Inc.
                and the executive officers and directors of Gran Tierra Energy
                Inc.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.27</font></div>
            </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">Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and Crosby Capital, LLC.
</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>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="top" width="37%">&#160;</td>
            <td align="left" valign="top" width="33%">
              <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="37%">&#160;</td>
            <td align="left" valign="top" width="33%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="37%">&#160;</td>
            <td align="left" valign="top" width="33%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="37%" style="border-bottom: medium none;">&#160;</td>
            <td align="left" valign="top" width="33%" style="border-bottom: medium none;">
              <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 id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>/s/James
                Hart&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
                </u></font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="37%">&#160;</td>
            <td align="left" valign="top" width="33%">
              <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="37%">&#160;</td>
            <td align="left" valign="top" width="33%">
              <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="37%">&#160;</td>
            <td align="left" valign="top" width="33%">&#160;</td>
          </tr>
          <tr>
            <td align="left" valign="top" width="37%">&#160;</td>
            <td align="left" valign="top" width="33%">
              <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:
                June 21, 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="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                No.</strong></font></div>
            </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 bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">3.5</font></div>
            </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">Amended
                and Restated Bylaws of Gran Tierra Energy Inc.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">4.2</font></div>
            </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 Warrant issued to institutional and retail investors in connection
                with
                the private offering on June 20, 2006.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">4.3</font></div>
            </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">Warrant
                issued to CD Investment Partners, Ltd. in connection with the private
                offering on June 20, 2006.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.19</font></div>
            </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 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.20</font></div>
            </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 20, 2006, by and among
                the Company and retail investors purchasing units of Gran Tierra
                Energy
                Inc. securities in a private offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.21</font></div>
            </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 20, 2006, by and among
                Gran
                Tierra Energy Inc. and retail investors subscribing for units of
                Gran
                Tierra Energy Inc. securities in a private offering. </font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">&#160;</td>
            <td align="left" valign="top" width="58%">&#160;</td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.22</font></div>
            </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">Securities
                Purchase Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.23</font></div>
            </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 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.24</font></div>
            </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 20, 2006, by and
                among
                Gran Tierra Energy Inc. and retail investors purchasing units of
                Gran
                Tierra Energy Inc. securities in a private offering.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.25</font></div>
            </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">Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.</font></div>
            </td>
          </tr>
          <tr bgcolor="white">
            <td align="left" valign="top" width="12%">
              <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">10.26</font></div>
            </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">Lock-Up
                Agreement, dated June 20, 2006, by and among Sanders Morris Harris
                Inc.
                and the executive officers and directors of Gran Tierra Energy
                Inc.</font></div>
            </td>
          </tr>
          <tr bgcolor="#ccfacc">
            <td align="left" valign="top" width="12%">
              <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">10.27</font></div>
            </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">Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and Crosby Capital, LLC.
</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>
    <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": "06918038"}, "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 15, 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
      1.01.
ENTRY
      INTO MATERIAL DEFINITIVE AGREEMENT.
Reference
      is made to the disclosures regarding the securities purchase agreements,
      subscription agreements and registration rights agreements executed by the
      Company on June 20, 2006, which disclosures are set forth under Items
      2.01, 3.02 and 8.01 of this Current Report on Form 8-K, and which
      disclosures are incorporated herein by reference.
Item
      2.01. COMPLETION OF ACQUISITION OR DISPOSITION OF ASSETS.
As
      previously disclosed in the Company's Current Report on Form 8-K, filed with the
      Securities and Exchange Commission on June 1, 2006, the Company entered into
      a
      Securities Purchase Agreement, dated as of May 25, 2006, with Crosby Capital,
      LLC ("Crosby") to acquire all of the limited partnership interests of Argosy
      Energy International ("Argosy") and all of the issued and outstanding capital
      stock of Argosy Energy Corp. (the "Argosy Acquisition"). On June 20, 2006, the
      Company closed the Argosy Acquisition and paid consideration to Crosby
      consisting of $37,500,000 cash, 870,647 shares of the Company's Common Stock and
      overriding and net profits interests in certain of Argosy's assets, valued at
      $1,000,000. The Securities Purchase Agreement between the Company and Crosby
      was
      filed with the Securities and Exchange Commission on June 1, 2006 as Exhibit
      10.18 to the Company's Current Report on Form 8-K.
The
      Company additionally agreed to register the 870,647 shares of its Common Stock
      issued as consideration to Crosby in the Argosy Acquisition. On June 20, 2006,
      the Company executed a registration rights agreement with Crosby, pursuant
      to
      which the Company has committed to file a registration statement covering such
      shares within 45 days of the effective date of the registration statement
      covering the securities issued to investors in the Offering. The Company shall
      use 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 registration exemption provided in Rule 144(k) promulgated
      under the Securities Act has been satisfied with respect to all of the shares
      of
      Common Stock issued to Crosby, 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 is qualified by the Registration Rights Agreement by
      and
      between the Company and Crosby attached hereto as Exhibit 10.27.
ITEM
      3.02.
UNREGISTERED
      SALE OF EQUITY SECURITIES.
On
      June
      20, 2006 (the "Closing Date"), Gran Tierra Energy Inc. (the "Company") completed
      the sale of 43,336,051 units of its securities (the "Units"), deriving gross
      proceeds of $65,004,076 (the "Offering"). Each Unit consists of one share of the
      Company's common stock, par value $0.001 (the "Common Stock), and a warrant to
      purchase one-half share of the Company's Common Stock for a period of five years
      at an exercise price of $1.75 per whole share. The Offering was exempt from
      registration pursuant to Section 4(2) of the Securities Act of 1933, as amended,
      and Rule 506 of Regulation D promulgated thereunder. The Units were offered
      and
      sold to "accredited investors," as that term is defined under Rule 501 of
      Regulation D, some of which were institutional investors, and to less than
      35
      unaccredited investors, in compliance with Rule 506. Deutsche Bank and Sanders
      Morris Harris Inc. acted as placement agents in the Offering and earned
      commissions of $2,205,582 and $2,455,582, respectively.
Units
      consisting of 24,567,995 shares of Common Stock and warrants for the purchase
      of
      12,283,998 shares of Common Stock were sold to institutional investors (the
      "Institutional Investors") pursuant to that certain Securities Purchase
      Agreement by and between the Company and such institutional investors and dated
      as of June 20, 2006, the form of which is attached hereto as Exhibit 10.19.
      A
      form of the warrants issued to the Institutional Investors is attached hereto
      as
      Exhibit 4.2.
Units
      consisting of 18,101,389 shares of Common Stock and warrants for the purchase
      of
      9,050,695 shares of Common Stock were sold to retail investors (the "Retail
      Investors") pursuant to that certain Securities Purchase Agreement, dated as of
      June 20, 2006, by and between the Company and such investors, a form of which
      is
      attached hereto as Exhibit 10.20. The retail 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 is attached hereto as Exhibit 10.21. A form of the
      warrants issued to the Retail Investors is attached hereto as Exhibit
      4.2.
Units
      consisting of 666,667 shares of Common Stock and warrants for the purchase
      of
      333,334 shares of Common Stock were sold to CD Investment Partners, Ltd. ("CD
      Investment") pursuant to that certain Securities Purchase Agreement by and
      between the Company and CD Investment and dated as of June 20, 2006. The
      Securities Purchase Agreement between the Company and CD Investment is attached
      hereto as Exhibit 10.22. A form of the warrant issued to CD Investment is
      attached hereto as Exhibit 4.3.
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 from the Closing Date. The Company shall use 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 agreements, each of which is attached
      as an
      Exhibit to this Current Report on Form 8-K. A form of the Registration Rights
      Agreement, dated as of June 20, 2006, by and among the Company and the
      Institutional Investors, is attached hereto as Exhibit 10.23. A form of the
      Registration Rights Agreement, dated as of June 20, 2006, by and among the
      Company and the Retail Investors, is attached hereto as Exhibit 10.24. The
      Registration Rights Agreement, dated as of June 20, 2006, by and between the
      Company and CD Investment, is attached hereto as Exhibit 10.25. Each of the
      above-described registration rights agreements is incorporated herein by
      reference.
In
      connection with the Offering and as of the Closing Date, all of the Company's
      executive officers and directors entered into a Lock-Up Agreement with Sanders
      Morris Harris Inc., pursuant to which the executive officers and directors
      agreed not to offer, sell or otherwise dispose of any shares of the Company's
      capital stock or any securities convertible into, exercisable or exchangeable
      for such capital stock, without the consent of the Sanders Morris Harris Inc.,
      during the period commencing on the Closing Date and ending either 180 days
      after the closing of the Offering or upon the effective date of the registration
      statement covering the resale of the Units, whichever is earlier. The Lock-Up
      Agreement is attached hereto as Exhibit 10.26 and is incorporated herein by
      reference.
No
      underwriters were involved in connection with the sale of the securities
      described above.
ITEM
      5.03.
AMENDMENT
      TO BYLAWS.
On
      June
      15, 2006, the Company's Board of Directors (the "Board") unanimously approved
      the amendment and restatement of the Company's bylaws (the "Amended and Restated
      Bylaws," and the former bylaws herein referred to as the "Original Bylaws") to
      be effective June 15, 2006. The Amended and Restated Bylaws, among other things,
      contain the following changes from the Original Bylaws:
·
A
                record date to determine stockholders entitled to notice of or to
                vote at
                any meeting of the stockholders shall not be more than 60 days nor
                less
                than 10 days before the date of such meeting, and such notice of
                a
                stockholder meeting shall be delivered to the stockholder within
                the same
                time period. The Original Bylaws required a record date to be set
                no more
                than 60 days before a stockholder meeting, but did not provide the
                minimum
                10-day requirement, and required notice of stockholder meetings to
                be sent
                to stockholders at least 10 days before the meeting, but did not
                limit the
                notice to 60 days prior to the
                meeting.
·
A
                quorum at a stockholder meeting shall be the majority of the outstanding
                shares of the capital stock entitled to vote. The Original Bylaws
                provided
                that a quorum consisted of two stockholders present or being represented
                by proxy at a stockholder meeting.
·
Provides
                procedure for stockholders to give notice and propose business to
                be
                considered by stockholders at an annual meeting. The Original Bylaws
                did
                not provide such a procedure.
·
Directors
                shall be elected by a plurality of the votes cast by ballot. The
                Original
                Bylaws did not specify the required vote for the election of
                directors.
·
Provides
                for appointment of one or more inspectors of elections, and the duties
                thereof, which the Original Bylaws did not
                address.
·
A
                stockholder may vote by proxy, but no proxy shall be voted after
                eleven
                months from its date, unless such proxy provides for a longer period.
                Also, a stockholder may revoke any proxy which is not irrevocable
                by
                attending the meeting and voting in person or by filing with the
                person
                recording the proceedings of the meeting an instrument in writing
                revoking
                the proxy or another duly executed proxy bearing a later date. The
                Original Bylaws did not set a default time period for the voting
                of a
                proxy and did provide a procedure for the revocation of a
                proxy.
·
Directors
                shall hold office until the next meeting of stockholders held for
                the
                purpose of electing the Board or until their successors have been
                duly
                elected and qualified, or until a director's prior death, resignation or
                removal. The Original Bylaws did not provide for the continuation
                of the
                directorships if no stockholder meeting was held for the purpose
                of
                electing the Board.
·
Between
                successive meetings, directors have the power to appoint one or more
                additional directors to fill any vacancies and any director so appointed
                shall hold office until the next annual meeting of the Company or
                until
                his successor is duly elected and qualified but such director shall
                be
                eligible for election at the next meeting of stockholders held for
                the
                purpose of electing directors and the number of directors will be
                increased accordingly. The Original Bylaws limit the number of directors
                that can be appointed between successive annual meetings to no more
                than
                one-half of the number of directors fixed at the last stockholder
                meeting
                at which directors were elected.
·
Provides
                notice requirements for regular and special meetings of the Board
                of
                Directors, and what is deemed to constitute such notice. The Original
                Bylaws did not contain such detail.
·
Any
                director may be removed from office only for cause and only by the
                affirmative vote of at least 67% of the voting power of all of the
                outstanding voting stock. The Original Bylaws allowed a director
                to be
                removed without cause by two-thirds vote of the
                stockholders.
·
Directors
                shall not receive any stated salary for their services as Directors
                or as
                members of any committees of the board of directors, but by resolution
                of
                the Board a fixed fee and the expenses of attendance may be allowed
                for
                attendance at each meeting. The Original Bylaws provided that remuneration
                may be determined from time to time by the Board, or if directors
                decide,
                by the stockholders.
·
Establishes
                the Chairman of the Board as an elected officer of the Company and
                provides for the duties of the officers of the Company. The Original
                Bylaws did not contain similar
                provisions.
·
The
                fiscal year of the Company shall begin on the first day of January
                and end
                on the thirty-first day of December of each year. The Original Bylaws
                allowed the Board to determine the Company's fiscal year from time to time
                without amending the Original
                Bylaws.
·
Dividends
                may be declared by the Board from time to time on its outstanding
                shares
                of capital stock, pursuant to the terms of the Company's Articles of
                Incorporation. The Original Bylaws required the approval of the holders
                of
                a majority of the class or series of capital stock to be issued
                dividends.
·
The
                Chairman of the Board, President or any Vice President may appoint
                an
                attorney or agent of the Company, in the name of and on behalf of
                the
                Company, to cast the votes which the Company may be entitled to cast
                as
                the holder of stock or securities in any other corporation. The Original
                Bylaws did not contain a similar
                provision.
·
The
                permissions and restrictions on conflict of interests involving directors
                of the Company, as addressed under Nevada law, are not included in
                the Amended and Restated Bylaws. Such provisions of Nevada law were
                summarized in the Original Bylaws.
·
Indemnification
                shall be provided to officers, directors and employees to the extent
                allowed under Nevada law. The Original Bylaws provided circumstances
                under
                which directors, officers and employees would be indemnified. The
                Amended
                and Restated Bylaws further allow for the advancement of expenses
                and
                provide that indemnification shall continue for persons who are no
                longer
                directors, officers or employees for actions taken while they were
                acting
                in such capacities, which was not provided for in the Original
                Bylaws.
The
      descriptions of the new provisions of the Amended and Restated Bylaws and the
      provisions of the Original Bylaws contained in this Current Report are qualified
      in their entirety by reference to the full text of the Company's Amended and
      Restated Bylaws, a copy of which is attached hereto as Exhibit 3.5 and
      incorporated herein by reference.
ITEM
      8.01.
OTHER
      EVENTS.
Closing
      of the Golden Oil Transaction
On
      May
      15, 2006, Gran Tierra Energy Argentina S.A., a subsidiary of the Company ("Gran
      Tierra Argentina"), entered into a Farm In Agreement with Golden Oil Corporation
      ("Golden Oil") whereby Golden Oil agreed to assign Gran Tierra Argentina a 50%
      interest in the El Vinalar Block in the Noroeste Basin of Argentina, which
      encompasses both producing and prospective lands. On June 20, 2006, concurrent
      with the closing of the Offering, Gran Tierra Argentina initiated closing of
      its
      agreement with Golden Oil. Total consideration for the acquisition is $950,000
      and includes a commitment to fund up to $2.7 million of the cost of a planned
      sidetrack well. The agreement with Golden Oil contained standard
      representations, warranties and conditions to closing.
Press
      Release
The
      Company announced the closing of its Offering, the closing of the Argosy
      Acquisition, and the closing of the Golden Oil transaction in a press release
      issued on June 21, 2006, a copy of which is filed herewith as Exhibit 99.1.
ITEM
      9.01.
FINANCIAL
      STATEMENTS AND EXHIBITS
(a)
      Financial Statements of Business Acquired.
The
      registrant intends to amend this Current Report on Form 8-K to include financial
      statements required under this Item 9.01 as soon as they are prepared, but
      in no
      event later than 71 calendar days after the deadline for filing this
      report
.
(d)
      Exhibits.
Exhibit
                No.
Description
3.5
Amended
                and Restated Bylaws of Gran Tierra Energy Inc.
4.2
Form
                of Warrant issued to institutional and retail investors in connection
                with
                the private offering on June 20, 2006.
4.3
Warrant
                issued to CD Investment Partners, Ltd. in connection with the private
                offering on June 20, 2006.
10.19
Form
                of Securities Purchase Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.
10.20
Form
                of Securities Purchase Agreement, dated as of June 20, 2006, by and
                among
                the Company and retail investors purchasing units of Gran Tierra
                Energy
                Inc. securities in a private offering.
10.21
Form
                of Subscription Agreement, dated as of June 20, 2006, by and among
                Gran
                Tierra Energy Inc. and retail investors subscribing for units of
                Gran
                Tierra Energy Inc. securities in a private offering.
10.22
Securities
                Purchase Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.
10.23
Form
                of Registration Rights Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.
10.24
Form
                of Registration Rights Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and retail investors purchasing units of
                Gran
                Tierra Energy Inc. securities in a private offering.
10.25
Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners,
                Ltd.
10.26
Lock-Up
                Agreement, dated June 20, 2006, by and among Sanders Morris Harris
                Inc.
                and the executive officers and directors of Gran Tierra Energy
                Inc.
10.27
Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and Crosby Capital, LLC.
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:
                June 21, 2006
EXHIBIT
      INDEX
Exhibit
                No.
Description
3.5
Amended
                and Restated Bylaws of Gran Tierra Energy Inc.
4.2
Form
                of Warrant issued to institutional and retail investors in connection
                with
                the private offering on June 20, 2006.
4.3
Warrant
                issued to CD Investment Partners, Ltd. in connection with the private
                offering on June 20, 2006.
10.19
Form
                of Securities Purchase Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.
10.20
Form
                of Securities Purchase Agreement, dated as of June 20, 2006, by and among
                the Company and retail investors purchasing units of Gran Tierra
                Energy
                Inc. securities in a private offering.
10.21
Form
                of Subscription Agreement, dated as of June 20, 2006, by and among
                Gran
                Tierra Energy Inc. and retail investors subscribing for units of
                Gran
                Tierra Energy Inc. securities in a private offering.
10.22
Securities
                Purchase Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.
10.23
Form
                of Registration Rights Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and institutional investors purchasing units
                of
                Gran Tierra Energy Inc. securities in a private
                offering.
10.24
Form
                of Registration Rights Agreement, dated as of June 20, 2006, by and
                among
                Gran Tierra Energy Inc. and retail investors purchasing units of
                Gran
                Tierra Energy Inc. securities in a private offering.
10.25
Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and CD Investment Partners, Ltd.
10.26
Lock-Up
                Agreement, dated June 20, 2006, by and among Sanders Morris Harris
                Inc.
                and the executive officers and directors of Gran Tierra Energy
                Inc.
10.27
Registration
                Rights Agreement, dated as of June 20, 2006, by and between Gran
                Tierra
                Energy Inc. and Crosby Capital, LLC.