Annual report pursuant to Section 13 and 15(d)

6. STOCKHOLDERS' EQUITY

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6. STOCKHOLDERS' EQUITY
12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
6. STOCKHOLDERS' EQUITY

On May 3, 2016, the Company completed an underwritten public offering of 2,176,154 shares of its common stock, for gross proceeds of approximately $14.1 million. Net proceeds from this offering were approximately $13.0 million, after payment of underwriting discounts and offering expenses of approximately $1.1 million. The shares were sold under a shelf registration statement on Form S-3 (File No. 333-200638) that was declared effective by the SEC on December 23, 2014.

 

On March 18, 2015, the Company closed an underwritten sale of 1,225,000 shares of its common stock, as well as 183,750 additional shares of its common stock pursuant to the full exercise of the over-allotment option granted to the underwriters, for gross proceeds of approximately $11.3 million. Net proceeds from this offering were approximately $10.2 million, net of underwriting discounts and offering expenses of approximately $1.1 million. The shares were sold under a shelf registration statement on Form S-3 (File No. 333-200638) that was declared effective by the SEC on December 23, 2014.

 

Oxford and Hercules Debt Financing Warrant Issuance

 

In May 2016, the Company issued to Oxford warrants to purchase an aggregate of up to 24,800 shares of the Company’s common stock at an exercise price equal to $6.37 per share. The warrants became exercisable on May 13, 2016 for cash or by net exercise and will expire seven years after their issuance on May 13, 2023. In connection with the LSA with Oxford, on June 19, 2015, the Company issued to Oxford a seven year warrant, expiring on June 19, 2022, to purchase 74,309 shares of common stock at an exercise price of $8.51 per share. In connection with the Prior Loan Agreement with Hercules, on December 21, 2012, the Company issued to Hercules a warrant to purchase 31,750 shares of common stock with an exercise price of $7.56, subject to customary anti-dilution adjustments. In connection with the Loan Amendment, the Company issued to Hercules a warrant to purchase 23,200 and 34,800 shares of common stock of the Company in February and December 2014, respectively, with an exercise price set at the lower of (i) $7.50 per share or (ii) the price per share of the next round of financing from the expiration of the exercise price adjustment, subject to customary anti-dilution adjustments. The warrant expires after 10 years and has piggyback registration rights with respect to the shares of common stock underlying the warrant. The down round warrant protection feature resulting in the warrant liability’s quarterly “mark-to-market” valuation has terminated as of the end of the one-year period following the amended Loan Closing on February 24, 2014 (see Note 5).