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Net Loss Per Common Share | 6 Months Ended
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Jun. 30, 2021
Net Loss Per Common Share |
Note 3. Net Loss Per Common Share | 3. Net Loss Per Common Share Basic and diluted net loss per common share is determined by dividing net loss attributable to common stockholders by the weighted-average common shares outstanding during the period. For all periods presented, the common shares underlying the options and warrants have been excluded from the calculation because their effect would be anti-dilutive. Therefore, the weighted-average shares outstanding used to calculate both basic and diluted loss per common share are the same. For the three and six months ended June 30, 2021 and 2020, potentially dilutive securities excluded from the computations of diluted weighted-average shares outstanding were options to purchase 1,023,513 and 723,194 shares of common stock, respectively, warrants to purchase 378,442 and 353,585 shares of common stock, respectively, and 2,964 and 15,686 shares of restricted common stock, respectively.

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