Omeros (OMER) 10-Q 2016 Q2 Quarterly report

							EXHIBIT 12.1
Omeros Corporation
Computation of Deficiency in the Coverage of Fixed Charges by Earnings Before Fixed Charges
	For the
	six months
	ended
	June 30,						Year Ended December 31,
	2016			2015			2014			2013			2012			2011
	(in thousands)			(in thousands)
Earnings before fixed charges:
Loss from continuing operations before income taxes	$	(33,151	)	$	(75,096	)	$	(73,673	)	$	(39,796	)	$	(38,444	)	$	(28,546	)
Add fixed charges	4,771			8,295			6,824			5,621			2,305			2,144
Add amortization of capitalized interest	—			—			—			—			—			—
Add distributed income of equity investees	—			—			—			—			—			—
Subtract capitalized interest	—			—			—			—			—			—
Loss before fixed charges	$	(28,380	)	$	(66,801	)	$	(66,849	)	$	(34,175	)	$	(36,139	)	$	(26,402	)
Fixed Charges:
Interest expense	$	2,548		$	2,709		$	2,710		$	1,865		$	1,355		$	1,532
Amortization of debt expense and loss from extinguishment of debt	683			2,177			759			502			374			352
Estimate of interest expense within rental expense	1,540			3,409			3,355			3,254			576			260
Preference security dividend requirements of consolidated subsidiaries	—			—			—			—			—			—
Total fixed charges	$	4,771		$	8,295		$	6,824		$	5,621		$	2,305		$	2,144
Deficiency of earnings available to cover fixed charges	$	(20,539	)	$	(75,096	)	$	(73,673	)	$	(39,796	)	$	(38,444	)	$	(28,546	)