On December 21, 2009, the Company issued $2,400,000 in principal of convertible promissory notes (the “Exchange Notes”) and warrants to purchase an aggregate of 935,040 shares of the Company’s common stock (the “Exchange Warrants”) in exchange for 480 shares of outstanding Series A preferred stock (the “Exchange”). The Exchange Warrants had an exercise price of $5.08 and expired three years from issuance. The Exchange Notes bore interest at 1% per annum, matured three years from the date of issuance and were convertible into 450,281 shares of common stock at a fixed conversion price of $5.33. There were no price-based anti-dilution provisions in the Exchange Notes or Exchange Warrants.

At issuance, the value allocated to the Exchange Notes of $2,150,448 was less than the face value of $2,472,000. This original issue discount of $321,552 was being amortized through periodic charges to interest expense using the effective method. Amortization charges amounted to $27,225 during the six months ended June 30, 2012.

On February 28, 2012, the Company and the holders of the Exchange Notes amended the Exchange Notes. As of the amendment date, the Exchange Notes bore interest at 10% per annum and matured on June 30, 2013. Interest on the outstanding principal amount of the Exchange Notes was due and payable on the maturity date. The Exchange Notes remained convertible into 450,281 shares of common stock at a fixed conversion price of $5.33.

The notes were extinguished during 2012. The Exchange Warrants issued in conjunction with the Exchange Notes expired on December 21, 2012.