| Schedule of Earnings Per Share |
The following shows the amounts used in computing net loss per share for the nine months ended September 30, 2017 and 2016: | | | Nine Months Ended September 30, | | | | | 2017 | | 2016 | | | Net loss | | $ | (5,629,332) | | $ | (8,829,366) | | | Add: | | | | | | | | | Undeclared cumulative preferred dividends | | | — | | | (75,460) | | | Net loss attributable to common stockholders | | $ | (5,629,332) | | $ | (8,904,826) | | | Weighted average common shares issued and outstanding - basic and diluted | | | 22,093,169 | | | 13,336,013 | | | Basic and diluted net loss per share attributable to common stockholders | | $ | (0.25) | | $ | (0.67) | | | | | Three Months Ended September 30, | | | | | 2017 | | 2016 | | | Net loss | | $ | (1,979,664) | | $ | (2,184,468) | | | Add: | | | | | | | | | Undeclared cumulative preferred dividends | | | — | | | — | | | Net loss attributable to common stockholders | | $ | (1,979,664) | | $ | (2,184,468) | | | Weighted average common shares issued and outstanding - basic and diluted | | | 24,632,169 | | | 15,120,479 | | | Basic and diluted net loss per share attributable to common stockholders | | $ | (0.08) | | $ | (0.14) | | The following table sets forth the number of shares excluded from the computation of diluted loss per share, as their inclusion would have been anti-dilutive: | | | Nine Months Ended September 30, | | | | | 2017 | | 2016 | | | Stock options | | | 1,236,253 | | | 71,213 | | | Warrants | | | 4,956,509 | | | 532,314 | | | | | | 6,192,762 | | | 603,527 | |
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