Item 8.01. Other Events.

On February 7, 2013, we issued a press release announcing that the underwriter of our recent common stock public offering, which closed on February 4, 2013 along with our concurrent Series A Non-Voting Convertible preferred stock public offering, exercised in full its over-allotment option to purchase an additional 870,000 shares of common stock at $2.50 per share, less underwriting discount and commissions and offering expenses. A copy of this press release is attached.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. Description

99.1 Press release dated February 7, 2013.