Basic net loss per share is computed using the weighted-average number of common shares outstanding during the period except that it does not include unvested common shares subject to repurchase or cancellation. Diluted net income per share is computed using the weighted-average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options, warrants and convertible preferred shares (see Note 7, Stockholders’ Equity and Stock-Based Compensation). The dilutive effect of outstanding stock options, warrants and convertible preferred shares is not reflected in diluted earnings per share because the Company incurred net losses for the three months and nine months ended September 30, 2020 and 2019, and the effect of including these potential common shares in the net loss per share calculations would be anti-dilutive, therefore not included in the calculations.