Net (loss) earnings per common stock

6 Months Ended

Jun. 30, 2019

10. Net (loss) earnings per common stock

Basic and diluted net (loss) earnings per common stock is computed by dividing net (loss) earnings by the weighted average number of common stock outstanding. For the three and six months ended June 30, 2019, the Company reported a net loss and therefore excluded outstanding stock options to purchase 2,631,097 shares as the effect would have been antidilutive for the periods presented. For the three months ended June 30, 2018, the Company reported net income and therefore included the dilutive effect of 324,537

shares that might be issued upon the exercise of stock options. For the six months ended June 30, 2018, the Company reported a net loss and therefore excluded

2,744,109

shares from the computation of basic and diluted net loss per common stock as the effect would have been antidilutive.