Note 7. Loss per Common Share

Basic loss per share is computed by dividing the net loss adjusted for preferred stock dividends by the weighted average number of common shares outstanding during the period. Diluted loss per share includes the weighted average common shares outstanding and potentially dilutive common stock equivalents. Because of the net losses for all periods presented, the basic and diluted weighted average shares outstanding are the same since including the additional shares would have an anti-dilutive effect on loss per share. The reconciliation of the numerators and denominators of the basic and diluted net loss per share computations are as follows:

​

(1) See Note 2, Summary of Significant Accounting Policies.

The table below shows the approximate number of shares of common stock issuable upon the exercise, vesting or conversion of outstanding options, warrants, unvested restricted stock units (including those subject to performance conditions), convertible notes, and convertible preferred stock (including undeclared dividends) that were not included in

the computation of basic and diluted weighted average number of shares of common stock outstanding for the periods presented:

​

​