Stockholders' equity

12 Months Ended

Dec. 31, 2011

Stockholders' equity

Note 8 - Stockholders' equity

On September 5, 2008, the Company’s shelf registration statement on Form S-3 (the “Shelf Registration”) was declared effective by the SEC.

On July 31, 2009, Hudson entered into a Placement Agent Agreement with Roth Capital Partners, (“Roth”), engaging Roth to act as placement agent for a registered direct offering under the Shelf Registration to sell, on a best efforts basis, 3,870,000 shares of the Company’s common stock at a sale price of $1.15 per share (the “2009 Offering”).

A closing of the 2009 Offering was held on August 5, 2009, at which time, Hudson sold 1,470,000 shares of its common stock at $1.15 per share and received net proceeds of approximately $1,400,000 and no other closings were completed. As placement agent for the 2009 Offering, Roth received $101,000 and a warrant to purchase 73,500 shares of common stock at an exercise price of $1.4375 per share, plus reimbursement of its expenses of $56,000. The estimated fair value of the warrant was approximately $48,000 and such warrant was charged to additional paid in capital as compensation expense to Roth. As of October 1, 2009, the Company discontinued, and ceased pursuing further sales under, the 2009 Offering.

In September 2009, the Company issued an aggregate of 32,173 shares of its common stock to certain vendors and the Company expensed approximately $44,000 as professional fees for these services.

On July 7, 2010, the Company sold 2,737,500 units, with the aggregate units consisting of 2,737,500 shares of the Company’s common stock and warrants to purchase 1,368,750 shares, at a price of $2.00 per unit in a registered direct offering (the “2010 Offering”) pursuant to the Shelf Registration. The warrants issued as part of the 2010 Offering have an exercise price of $2.60 per share and are exercisable for a five-year period, which commenced on January 7, 2011. The net proceeds pursuant to the 2010 Offering were approximately $4,900,000. The value of the aggregate number of warrants issued pursuant to the 2010 Offering was approximately $1,300,000 and such amount was charged as a component of stockholders’ equity to additional paid in capital.

Effective as of March 4, 2011, the Company re-purchased warrants to purchase 150,000 shares of the Company’s common stock, at a price of $0.60 per share, which warrants were issued in connection with the 2010 Offering.

On March 7, 2011, the remaining 1,218,750 warrants issued in connection with the 2010 Offering were amended on consent of the holders of more than two-thirds of the remaining warrants, to among other things, extend the expiration date of the warrants to July 7, 2016.