12. Warrants

At November 30, 2012 and 2011, the Company had 945,594 warrants issued and outstanding. The warrants were issued to stockholders that invested in the Company’s initial private placements and became exercisable on February 7, 2007 (the closing date of the Company’s initial public offering of common shares), subject to a lock-up period with respect to the underlying common shares. As of November 30, 2012, each warrant entitles the holder to purchase one common share at the exercise price of $11.41 per common share. Warrants were issued as separate instruments from the common shares and are permitted to be transferred independently from the common shares. The warrants have no voting rights and the common shares underlying the unexercised warrants have no voting rights until such common shares are received upon exercise of the warrants. All warrants expire on February 6, 2014.