19.

Share warrants

On September 19, 2008, the Company issued to WestPark Capital warrants to purchase 52,500 shares of common stock at an exercise price of $3.90 per share in connection with the initial public offering. The warrants have a term of five years and are exercisable no sooner than one year and no later than five years.

The fair value of the warrants at September 19, 2008, the issuance date, is $276,000. All warrants were evaluated for liability treatment and were determined to be equity instruments.

On December 16, 2009, a warrant holder exercised 5,000 shares of the warrants via a cashless exercise. The Company issued 2,510 shares of common stock upon the exercise of the warrants at no consideration. At September 30, 2012, warrants to purchase 47,500 shares of common stock were still outstanding.