8. Common Stock

In July 2013, the Company sold an aggregate of 5,750,000 shares of its common stock at a price to the public of $5.00 per share in an underwritten public offering and received net proceeds of approximately $26.7 million, after deducting underwriting discounts and commissions and offering expenses payable by the Company.

As of December 31, 2012 and September 30, 2013, the Company had 200.0 million shares of $0.01 par value common stock authorized. There were 95.8 million and 102.3 million shares of common stock issued and outstanding as of December 31, 2012 and September 30, 2013, respectively.

The shares reserved for future issuance as of December 31, 2012 and September 30, 2013 consisted of the following:

(in thousands)	December 31, 2012	September 30, 2013

Common stock warrants	2,842	2,777
Options to purchase common stock	18,066	20,355
Conversion premium on the Notes	—	25,000
	20,908	48,132