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Stockholders' Equity
9 Months Ended
Sep. 30, 2012
Stockholders' Equity Attributable to Parent [Abstract]  
Stockholders' Equity
Stockholders' Equity

Common Stock
During the nine months ended September 30, 2012 the Company issued 724,458 shares of common stock, of which 703,440 shares resulted from the exercise of stock options and 21,018 shares were awarded as equity compensation. Additionally, the Company repurchased 60,125 shares of unvested early-exercised stock options.

The Company had reserved shares of common stock for future issuance as follows:
 
September 30,
 
December 31,
 
2012
 
2011
Options outstanding under the stock option plans
 
 
 
2000 Equity Incentive Plan (1)
6,539,099

 
6,312,041

Options available for future grants under the stock option plans
 
 
 
2000 Equity Incentive Plan
832,838

 
803,237

2012 Equity Incentive Plan (1)
3,050,000

 

Convertible preferred stock outstanding
17,597,258

 
17,597,258

Total shares reserved for future issuance
28,019,195

 
24,712,536



(1) See Note 8 for a description of these plans.

Subsequent to September 30, 2012, the Company closed its IPO and issued 7,836,250 shares of common stock on October 3, 2012. Additionally, immediately prior to the closing of the IPO, 17,597,258 outstanding shares of convertible preferred stock converted into an equivalent number of shares of common stock. If the IPO had closed on September 30, 2012, the Company would have had 37,937,228 shares of common stock outstanding on a fully diluted basis, taking into consideration the exercise of 6,539,099 outstanding options as of September 30, 2012. Refer to Note 13 for additional information regarding the Company’s IPO.

Convertible Preferred Stock
As of September 30, 2012, the Company was authorized to issue 176,400,000 shares of convertible preferred stock with a par value of $0.001 per share. The Company had designated 48,079,860 shares as Series A Preferred Stock, 110,314,114 shares as Series B Preferred Stock, and 18,006,026 shares as Series C Preferred Stock (cumulatively referred to as “Series Preferred”).

During 2000 and 2001, the Company issued 1,498,137 shares and 574,998 shares, respectively, of Series A Preferred Stock at an issuance price of $14.00 per share.

During 2003, the Company issued 11,031,387 shares of Series B Preferred Stock at an issuance price of $2.60 per share. Certain of these shares were issued upon the conversion of the Company’s then existing notes payable and related accrued interest at a conversion price per share equal to the price paid by other investors that purchased Series B Preferred Stock for cash.

In connection with the issuance of the Series B Preferred Stock in 2003, holders of Series A Preferred Stock were entitled to additional shares of Series A Preferred Stock in accordance with the antidilution provisions of the Company’s amended certificate of incorporation. The additional shares issued from the recapitalization resulted in a decrease to the average price of Series A Preferred Stock from $14.00 per share at issuance to $6.00 per share.

During 2004, the Company issued 1,729,636 shares of Series C Preferred Stock at an issuance price of $3.76 per share.

On October 3, 2012, all of the 17,597,258 outstanding shares of convertible preferred stock converted into an equivalent number of shares of common stock immediately prior to the closing of the IPO.

Preferred Stock
Effective October 3, 2012, the Company is authorized to issue 20,000,000 shares of undesignated preferred stock with a par value of $0.001 per share.

Dividends
The holders of Series Preferred are entitled to receive dividends, as may be declared by the Board of Directors, at the rate of eight percent of the original issuance price, as adjusted for any stock dividends, combinations, splits, recapitalizations and the like, in preference to holders of any other capital stock. Holders of Series C Preferred Stock are entitled to receive dividends in preference to holders of Series A Preferred Stock and Series B Preferred Stock. Further, holders of Series B Preferred Stock are entitled to receive dividends in preference to holders of Series A Preferred Stock. On October 3, 20102, all of the 17,597,258 outstanding shares of convertible preferred stock converted into an equivalent number of shares of common stock immediately prior to the closing of the IPO.

Conversion
Any share of Series Preferred is convertible at any time, at the option of holder, into fully paid and nonassessable shares of common stock. The number of shares of common stock to which a holder of Series Preferred is entitled upon conversion is the product obtained by multiplying the conversion rate by the number of shares being converted, subject to certain antidilution provisions. The conversion rate is the quotient obtained by dividing the original issuance price by the conversion price. The conversion price is the original issuance price, as adjusted from time to time due to any recapitalizations, dividends, or distributions. As of September 30, 2012 and December 31, 2011, Series Preferred shares are convertible at a ratio of 1-to-1 into common stock.

Each share of Series Preferred automatically converts into shares of common stock at the effective conversion rate immediately upon the earlier to occur of (i) the Company’s sale of its common stock in a bona fide firm commitment underwriting pursuant to a registration statement filed under the Securities Act of 1933, as amended, at the public offering price of not less than $12.00 per share (as adjusted to reflect subsequent stock dividends, stock splits, or recapitalizations) and $20 million in the aggregate or (ii) the date specified by written consent of agreement of the holders of a majority of the outstanding shares of Series C Preferred Stock. Such conversion took place on October 3, 2012 immediately prior to the closing of the IPO.

Liquidation Rights
Initial Distribution—Series C Preferred

In the event of any liquidation, dissolution, or winding up of the Company, whether voluntary or involuntary, the holders of Series C Preferred Stock are entitled to receive a liquidation payment prior and in preference to any distribution of any of the assets of the Company to holders of Series B Preferred Stock, Series A Preferred Stock, and common stock by reason of their ownership. The liquidation rights will be in an amount per share of Series C Preferred Stock equal to the original issuance price, adjusted for any stock dividends, combinations, or splits with respect to such shares and amounts equal to declared but unpaid dividends on such shares. At liquidation, if the assets of the Company are insufficient to make payment in full to all holders of Series C Preferred Stock outstanding at that date, then such assets shall be distributed among the holders of Series C Preferred Stock, ratably in proportion to the full amounts to which they would otherwise be respectively entitled.

Secondary Distribution—Series B Preferred

After payment of the full liquidation preference of the Series C Preferred Stock, holders of Series B Preferred Stock are entitled to receive a liquidation payment prior and in preference to any distribution of any of the assets of the Company to holders of Series A Preferred Stock and common stock. The liquidation rights will be in an amount per share of Series B Preferred Stock equal to the original issuance price, adjusted for any stock dividends, combinations, or splits with respect to such shares and amounts equal to declared but unpaid dividends on such shares. At liquidation, if the remaining assets of the Company are insufficient to make payment in full to all holders of Series B Preferred Stock outstanding at that date, then such assets shall be distributed among the holders of Series B Preferred Stock, ratably in proportion to the full amounts to which they would otherwise be respectively entitled.

Tertiary Distribution—Series A Preferred

After full payment of the liquidation preference of the Series C Preferred Stock and Series B Preferred Stock, the holders of Series A Preferred Stock are entitled to receive a liquidation payment prior and in preference to any distribution of any assets of the Company to holders of common stock. The liquidation rights will be in an amount per share of Series A Preferred Stock equal to the original issuance price, adjusted for any stock dividends, combinations, or splits with respect to such shares and amounts equal to declared but unpaid dividends on such shares. At liquidation, if the remaining assets of the Company are insufficient to make payment in full to all holders of Series A Preferred Stock outstanding at that date, then such assets shall be distributed among the holders of Series A Preferred, ratably in proportion to the full amounts to which they would otherwise be entitled.

Remaining Assets Distribution—Common Stock

After full payment of the liquidation preference of the Series Preferred stockholders, any remaining assets of the Company legally available shall be distributed among the holders of common stock on a pro rata basis based on the number of shares of common stock held by each.

Voting

The holder of each share of Series Preferred is entitled to the number of votes equal to the number of shares of common stock into which each share of preferred stock can be converted.