Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Common Stock Warrants (right to buy)^F1,F2	$2.86	Jun 30, 2015	J	641,807	A	Jun 30, 2015	Dec 31, 2022	Common Stock	641,807	641,807	I
Common Stock Warrants (right to buy)^F1,F2	$2.86	Jun 30, 2015	J	21,386	A	Jun 30, 2015	Dec 31, 2022	Common Stock	21,386	21,386	I
Common Stock Warrants (right to buy)^F1,F2	$2.86	Jun 30, 2015	J	22,988	A	Jun 30, 2015	Dec 31, 2022	Common Stock	22,988	22,988	I
Common Stock Warrants (right to buy)^F3,F2	$19.50	Jun 30, 2015	J	11,836	A	Jun 30, 2015	Dec 31, 2022	Common Stock	11,836	11,836	I
Common Stock Warrants (right to buy)^F3,F2	$19.50	Jun 30, 2015	J	394	A	Jun 30, 2015	Dec 31, 2022	Common Stock	394	394	I
Common Stock Warrants (right to buy)^F3,F2	$19.50	Jun 30, 2015	J	424	A	Jun 30, 2015	Dec 31, 2022	Common Stock	424	424	I
Common Stock Warrants (right to buy)^F4,F2	$14.20	Jun 30, 2015	J	16,823	A	Jun 30, 2015	Dec 31, 2022	Common Stock	16,823	16,823	I
Common Stock Warrants (right to buy)^F4,F2	$14.20	Jun 30, 2015	J	559	A	Jun 30, 2015	Dec 31, 2022	Common Stock	559	559	I
Common Stock Warrants (right to buy)^F4,F2	$14.20	Jun 30, 2015	J	602	A	Jun 30, 2015	Dec 31, 2022	Common Stock	602	602	I

Explanation of responses

F1Pursuant to a Securities Purchase Agreement dated September 2, 2010 between the Reporting Persons and the Issuer, the Reporting Persons acquired, among other securities of the Issuer, warrants to purchase an aggregate 19,047,619 shares of the Issuer's common stock. The Reporting Persons also acquired the right to receive additional warrants on each quarterly dividend payment date of the Issuer's Series A Preferred Stock on which dividends are not paid in cash but instead accrue. On June 30, 2015, one such date passed, and thus the Reporting Persons acquired an aggregate of 686,181 warrants on June 30, 2015.
F2Mr. Edelman has been appointed as a director of the Issuer. Edelman & Guill Energy L.P. is the general partner of each of White Deer Energy L.P., White Deer Energy TE L.P. and White Deer Energy FI L.P. (collectively, 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 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 the beneficial owners of these securities for purposes of Section 16 or for any other purpose.
F3Pursuant to a Securities Purchase Agreement dated August 1, 2012 between the Reporting Persons and the Issuer, the Reporting Persons acquired, among other securities of the Issuer, warrants to purchase an aggregate 3,076,923 shares of the Issuer's common stock. The Reporting Persons also acquired the right to receive additional warrants on each quarterly dividend payment date of the Issuer's Series A Preferred Stock on which dividends are not paid in cash but instead accrue. On June 30, 2015, one such date passed, and thus the Reporting Persons acquired an aggregate of 12,654 warrants on June 30, 2015.
F4Pursuant to a Securities Purchase Agreement dated December 17, 2012 between the Reporting Persons and the Issuer, the Reporting Persons acquired, among other securities of the Issuer, warrants to purchase an aggregate 4,577,464 shares of the Issuer's common stock. The Reporting Persons also acquired the right to receive additional warrants on each quarterly dividend payment date of the Issuer's Series A Preferred Stock on which dividends are not paid in cash but instead accrue. On June 30, 2015, one such date passed, and thus the Reporting Persons acquired an aggregate of 17,984 warrants on June 30, 2015.