X0203 3 2010-09-21 0 0001473061 PostRock Energy Corp PSTR 0001500938 Edelman & Guill Energy L.P. 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0001467859 White Deer Energy L.P. 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0001477741 White Deer Energy TE L.P. 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0001492479 White Deer Energy FI, L.P. 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0001500937 Edelman & Guill Energy Ltd. 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0000935356 EDELMAN THOMAS J 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 0001201989 GUILL BEN A 700 LOUISIANA, SUITE 4770 HOUSTON TX 77002 1 0 1 0 Series A Cumulative Redeemable Preferred Stock 5612 I By White Deer Energy L.P. Series A Cumulative Redeemable Preferred Stock 187 I By White Deer Energy TE L.P. Series A Cumulative Redeemable Preferred Stock 201 I By White Deer Energy FI L.P. Common Stock Warrants (right to buy) 3.15 2011-01-19 2018-03-21 Common Stock 17817143 I By White Deer Energy L.P. Common Stock Warrants (right to buy) 3.15 2011-01-19 2018-03-21 Common Stock 592381 I By White Deer Energy TE L.P. Common Stock Warrants (right to buy) 3.15 2011-01-19 2018-03-21 Common Stock 638095 I By White Deer Energy FI L.P. These securities are owned of record by White Deer Energy L.P. (5,612 Shares of Series A Cumulative Redeemable Preferred Stock and Common Stock Warrants for 17,817,143 shares of Common Stock), White Deer Energy TE L.P. (187 Shares of Series A Cumulative Redeemable Preferred Stock and Common Stock Warrants for 592,381 shares of Common Stock) and White Deer Energy FI L.P. (201 Shares of Series A Cumulative Redeemable Preferred Stock and Common Stock Warrants for 638,095 shares of Common Stock) (collectively, the "Funds"), which are members of a "group" for purposes of Section 13(d) of the Exchange Act. Such group includes Edelman & Guill Energy L.P., Edelman & Guill Energy Ltd., Thomas J. Edelman and Ben A. Guill. Mr. Edelman has been appointed as a director of the Issuer. Edelman & Guill Energy L.P. is the general partner of the Funds, Edelman & Guill Energy Ltd. is the general partner of Edelman & Guill Energy L.P., and Messrs. Edelman and Guill are the directors of Edelman & Guill Energy Ltd. Accordingly, each of Edelman & Guill Energy Ltd, Edelman & Guill Energy L.P., and Messrs. Edelman and Guill may be deemed to control the investment decisions of the Funds. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interests therein, and this report shall not be deemed an admission that the reporting persons are beneficial owners of the reported securities for purposes of Section 16 or for any other purpose. /s/ Thomas Edelman, Director of Edelman & Guill Energy Ltd., general partner of Edelman & Guill Energy L.P., general partner of White Deer Energy L.P. 2010-10-01 /s/ Thomas Edelman, Director of Edelman & Guill Energy Ltd., general partner of Edelman & Guill Energy L.P., general partner of White Deer Energy TE L.P. 2010-10-01 /s/ Thomas Edelman, Director of Edelman & Guill Energy Ltd., general partner of Edelman & Guill Energy L.P., general partner of White Deer Energy FI L.P. 2010-10-01 /s/ Thomas Edelman, Director of Edelman & Guill Energy Ltd., general partner of Edelman & Guill Energy L.P. 2010-10-01 /s/ Thomas Edelman, Director of Edelman & Guill Energy Ltd. 2010-10-01 /s/ Thomas Edelman 2010-10-01 /s/ Ben Guill 2010-10-01