12. INCOME (LOSS) PER SHARE

Basic net income (loss) per common share is calculated by dividing net income (loss) attributable to common shareholders by the weighted-average number of common shares outstanding for the respective period. Diluted net income per common share is calculated by dividing adjusted net income by the diluted weighted average number of common shares outstanding, which includes the effect of potentially dilutive securities. Potentially dilutive securities for this calculation consist of stock options and unvested shares of restricted common stock, which are measured using the treasury stock method. When the Company recognizes a net loss, all potentially dilutive shares are anti-dilutive and are consequently excluded from the calculation of dilutive net loss per common share. Unvested shares of restricted stock participate in dividend distributions; however, they do not participate in losses. Therefore, dividends, if any, attributable to participating securities are not included as a reduction in the calculation of loss attributable to common shareholders.

The following table sets forth the calculation of basic and diluted net income (loss) per share for the three and six months ended June 30, 2025 and 2024:

For the three and six months ended June 30, 2025 and 2024, potentially dilutive securities excluded from the calculation of weighted average shares because they were anti-dilutive were as follows: