PostRock Energy (PSTR) S-3 Shelf registration

Exhibit 12.1

POSTROCK ENERGY CORPORATION
RATIOS OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS

	Year Ended December 31,
	2006		2007			2008			2009			January 1 - March 5, 2010		March 6 - December 31, 2010
	($ in thousands)
	Predecessor													Successor
EARNINGS:
Income (loss) before income taxes and minority interests		29,494		(47,058	)		(239,652	)		(292,320	)		21,736		45,221
Interest expense		18,888		32,824			23,509			21,812			3,246		14,416
Loan cost amortization		2,069		11,220			2,100			7,761			2,094		5,753
Interest included in operating lease expense		296		412			688			692			100		524
Amortization of capitalized interest		—		39			52			59			—		—
Earnings	$	50,747	$	(2,563	)	$	(213,303	)	$	(261,996	)	$	27,176	$	65,914
FIXED CHARGES:
Interest expense		18,888		32,824			23,509			21,812			3,246		14,416
Capitalized interest		1,081		385			626			—			—		—
Interest included in operating lease expense		296		412			688			692			100		524
Loan cost amortization		2,069		11,220			2,100			7,761			2,094		5,753
Fixed Charges	$	22,334	$	44,841		$	26,923		$	30,265		$	5,440	$	20,693
Preferred dividend requirements		—		—			—			—			—		1,980
COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS	$	22,334	$	44,841		$	26,923		$	30,265		$	5,440	$	22,673
RATIO OF EARNINGS TO FIXED CHARGES		2.3		(0.1	)		(7.9	)		(8.7	)		5.0		3.2
INSUFFICIENT COVERAGE	$	—	$	47,404		$	240,226		$	292,261		$	—	$	—
RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS		2.3		(0.1	)		(7.9	)		(8.7	)		5.0		2.9
INSUFFICIENT COVERAGE	$	—	$	47,404		$	240,226		$	292,261		$	—	$	—