The Company had 7,128,176 and 7,136,078 warrants outstanding at March 31, 2019 and December 31, 2018, respectively, with a weighted average exercise price of $2.62 per share. During the three months ended March 31, 2019, 7,902 warrants expired. At March 31, 2019, all warrants are exercisable, although for the Company’s two largest beneficial owners their warrants may be exercised only to the extent that the total number of shares of common stock then beneficially owned by these shareholders does not exceed 9.99% of the outstanding shares of the Company’s common stock.