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STOCKHOLDERS' EQUITY
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12 Months Ended |
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Dec. 31, 2013
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| STOCKHOLDERS' EQUITY | |
| STOCKHOLDERS' EQUITY |
9. STOCKHOLDERS' EQUITY Preferred Stock We are authorized to issue 10,000,000 shares of preferred stock. As of December 31, 2013 and 2012, there were no issued and outstanding shares of preferred stock. Our board of directors is authorized to fix or alter the designation, powers, preferences and rights of the shares of each series of preferred shares, and the qualifications, limitations or restrictions of any wholly unissued shares, to establish from time to time the number of shares constituting any such series, and to increase or decrease the number of shares, if any. Common Stock In May 2012, our stockholders approved an amendment to our Amended and Restated Certificate of Incorporation to increase the authorized number of shares of our common stock from 100,000,000 to 200,000,000 shares. The increase in the authorized number of shares of our common stock was effected pursuant to a Certificate of Amendment of the Amended and Restated Certificate of Incorporation filed with the Secretary of State of the State of Delaware in May 2012. In October 2012, we completed an underwritten public offering in which we sold 15,237,750 shares of our common stock pursuant to an effective registration statement at a price to the public of $9.50 per share. We received net proceeds of approximately $135.7 million after deducting underwriting discounts and commissions and offering expenses. Warrants In conjunction with the facilities lease entered into in May 2001, we issued a warrant to the lessor to purchase 16,666 shares of our common stock at an exercise price of $80.21 per share, a 15% premium to market at the time of issuance. This warrant expired unexercised in May 2006. The fair market value of this warrant, as determined using the Black-Scholes valuation model, was approximately $683,000. This amount has been capitalized in other long-term assets and is being amortized into expense over the life of the lease. As of December 31, 2013, approximately $186,000 remained to be amortized over the remaining term of the lease. In conjunction with the facilities lease amendment in October 2002, we issued a warrant to the lessor to purchase 55,555 shares of our common stock at an exercise price of $17.73 per share. The warrant expired unexercised in October 2007. The fair value of this warrant, as determined using the Black-Scholes valuation model, was approximately $565,000. This amount has been capitalized in other long-term assets and is being amortized into expense over the life of the lease. As of December 31, 2013, approximately $154,000 remained to be amortized over the term of the lease. In conjunction with the facilities lease amendment in July 2006, we issued a warrant to the lessor to purchase 100,000 shares of our common stock at an exercise price of $10.57 per share. The fair value of this warrant, as determined using the Black-Scholes valuation model, was approximately $801,000. This amount has been included in other long-term assets and is being amortized into expense over the term of the lease. As of December 31, 2013, approximately $283,000 remained to be amortized over the term of the lease. The build-to-suit lease agreement was further amended in March 2009. The lease amendment provided for the cancellation of the abovementioned warrant to purchase 100,000 shares of common stock and the issuance of a new warrant granting our landlord the right to purchase 200,000 shares of common stock. The exercise price per share of the new warrant is $6.61. The new warrant is outstanding as of December 31, 2013 and remains exercisable at any time up to February 2016. We applied modification accounting and determined the fair value of this warrant using the Black-Scholes valuation model. The incremental fair value of the new warrant as a result of the modification is $616,000. This amount has been included in other long-term assets and is being amortized into expense over the term of the lease. As of December 31, 2013, approximately $285,000 remained to be amortized over the term of the lease. |