X0202 4 2008-03-07 0 0001273441 GRAN TIERRA ENERGY, INC. GTRE 0001304096 Greywolf Capital Management LP 4 MANHATTANVILLE ROAD SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% 0001267114 GREYWOLF CAPITAL PARTNERS II LP C/O GREYWOLF CAPITAL MANAGEMENT LP 4 MANHATTANVILLE ROAD, SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% 0001272848 GREYWOLF CAPITAL OVERSEAS FUND C/O GREYWOLF CAPITAL MANAGEMENT LP 4 MANHATTANVILLE ROAD, SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% 0001304265 Greywolf Advisors LLC C/O GREYWOLF CAPITAL MANAGEMENT LP 4 MANHATTANVILLE ROAD, SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% 0001304271 Greywolf GP LLC C/O GREYWOLF CAPITAL MANAGEMENT LP 4 MANHATTANVILLE ROAD, SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% 0001304264 Savitz Jonathan C/O GREYWOLF CAPITAL MANAGEMENT LP 4 MANHATTANVILLE ROAD, SUITE 201 PURCHASE NY 10577 0 0 1 1 Member of Group Owning 10% Common Stock, par value $0.001 per share 2008-03-07 4 S 0 47600 3.5184 D 1780747 D Common Stock, par value $0.001 per share 2008-03-10 4 S 0 46200 3.5971 D 1734547 D Common Stock, par value $0.001 per share 2008-03-11 4 S 0 16800 3.5755 D 1717747 D Common Stock, par value $0.001 per share 2008-03-07 4 S 0 122400 3.5184 D 4568920 D Common Stock, par value $0.001 per share 2008-03-10 4 S 0 118800 3.5971 D 4450120 D Common Stock, par value $0.001 per share 2008-03-11 4 S 0 43200 3.5755 D 4406920 D Common Stock, par value $0.001 per share 1780747 I See Footnotes Common Stock, par value $0.001 per share 1734547 I See Footnotes Common Stock, par value $0.001 per share 1717747 I See Footnotes Common Stock, par value $0.001 per share 6349667 I See Footnotes Common Stock, par value $0.001 per share 6184667 I See Footnotes Common Stock, par value $0.001 per share 6124667 I See Footnotes Common Stock, par value $0.001 per share 6349667 I See Footnotes Common Stock, par value $0.001 per share 6184667 I See Footnotes Common Stock, par value $0.001 per share 6124667 I See Footnotes Common Stock, par value $0.001 per share 6349667 I See Footnotes Common Stock, par value $0.001 per share 6184667 I See Footnotes Common Stock, par value $0.001 per share 6124667 I See Footnotes The amount of securities shown in this row is owned directly by Greywolf Capital Partners II LP ("Greywolf Capital II"). The amount of securities shown in this row is owned directly by Greywolf Capital Overseas Fund ("Greywolf Overseas"). The amount of securities shown in this row is directly owned by Greywolf Capital II. As the general parter of Greywolf Capital II, Greywolf Advisors LLC (the "General Partner") may be deemed to be the beneficial owner of the Issuer's securities held by Greywolf Capital II. The amount of securities shown in this row represents the General Partner's deemed beneficial ownership of securities of the Issuer attributable to shares of common stock held by Greywolf Capital II as of March 7, 2008, March 10, 2008 and March 11, 2008, respectively. Such entity hereby disclaims any beneficial ownership of any such securities for purposes of Section 16 under the Securities Exchange Act of 1934, as amended (the "34 Act") or otherwise, except as to securities representing its pro rata interest in, and interest in the profits of, Greywolf Capital II. The amount of securities shown in this row is directly owned by Greywolf Capital II and Greywolf Overseas (together, the "Greywolf Funds"). As the investment manager of the Greywolf Funds, Greywolf Capital Management LP (the "Investment Manager") may be deemed to be the beneficial owner of the Issuer's securities held by the Greywolf Funds. The amount of securities shown in this row represents the Investment Manager's deemed beneficial ownership of securities of the Issuer attributable to shares of common stock held by the Greywolf Funds as of March 7, 2008, March 10, 2008 and March 11, 2008, respectively. Such entity hereby disclaims any beneficial ownership of any such securities for purposes of Section 16 under the 34 Act or otherwise, except to the extent of its pecuniary interest, if any. The amount of securities shown in this row is directly owned by the Greywolf Funds. As the general partner of the Investment Manager, Greywolf GP LLC (the "Investment Manager General Partner") may be deemed to be the beneficial owner of the Issuer's securities held by the Greywolf Funds. The amount of securities shown in this row represents the Investment Manager General Partner's deemed beneficial ownership of securities of the Issuer attributable to shares of common stock held by the Greywolf Funds as of March 7, 2008, March 10, 2008 and March 11, 2008, respectively. Such entity hereby disclaims any beneficial ownership of any such securities for purposes of Section 16 under the 34 Act or otherwise, except as to securities representing its pro rata interest in, and interest in the profits of, the Investment Manager. The amount of securities shown in this row is directly owned by the Greywolf Funds. As the senior managing member of the General Partner and the sole managing member of the Investment Manager General Partner, Jonathan Savitz may be deemed to be the beneficial owner of the Issuer's securities held by the Greywolf Funds. The amount of securities shown in this row represents Jonathan Savitz's deemed beneficial ownership of securities of the Issuer attributable to shares of common stock held by the Greywolf Funds as of March 7, 2008, March 10, 2008 and March 11, 2008, respectively. Such person hereby disclaims any beneficial ownership of any such securities for purposes of Section 16 under the 34 Act or otherwise, except to the extent of his pecuniary interest, if any. The entities and individuals identified in the footnotes of this Form 4 may be deemed members of a group with each other with respect to the holding of equity securities of the Issuer. The filing of this Form 4 shall not be deemed to be an admission that such entities and individuals are members of such group. /s/ Jonathan Savitz, on his own behalf and as authorized signatory for each of the entities listed in footnotes (1) through (5) 2008-03-11 . 2008-03-11 . 2008-03-11 . 2008-03-11 . 2008-03-11 . 2008-03-11