Common Stock

9 Months Ended

Sep. 30, 2012

Common Stock

Common Stock

8.  Common Stock

During the first quarter of 2012, the Company amended its certificate of incorporation to increase the number of authorized shares of common stock to 200.0 million shares of $0.01 par value common stock. As of December 31, 2011 and September 30, 2012, the Company had 138.5 million shares and 200.0 million shares, respectively, of $0.01 par value common stock authorized. There were 11,834,000 and 94,029,000 shares of common stock issued and outstanding as of December 31, 2011 and September 30, 2012, respectively. The shares reserved for future issuance as of December 31, 2011 and September 30, 2012 consisted of the following:

(in thousands)	December 31, 2011	September 30, 2012
Conversion of Series B, Series C, Series D, Series E, Series F and Series G convertible preferred stock	66,256	—
Convertible preferred stock warrants	302	—
Common stock warrants	2,640	2,891
Options to purchase common stock	17,617	19,812
	86,815	22,703