Note 23 - Earnings Per Share

Basic earnings per share is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock; however, potential common equivalent shares are excluded if their effect is anti-dilutive.

The following table sets forth the reconciliation of basic and diluted net income per share for the three and nine months ended September 30, 2019 and 2018:

The calculation of diluted earnings per share for the three months ended September 30, 2019 and 2018, excluded from the denominator 7,029,569 and 6,942,133 shares, respectively, of common stock warrants because their effect would have been anti-dilutive. The calculation of diluted earnings per share for the nine months ended September 30, 2019 and 2018, excluded from the denominator 7,029,569 and 7,029,569 shares, respectively, of common stock warrants because their effect would have been anti-dilutive.

The assumed conversion of Series Q Preferred Stock into Common Stock will always be anti-dilutive based on the conversion rate of 1.05% of the Mentor share price. Therefore, the calculation of diluted earnings per share for the three months ended September 30, 2019 and 2018, excluded from the denominator 869,249 and 142,859, respectively, of Series Q Preferred Stock because the conversion value would have been anti-dilutive. The calculation of diluted earnings per share for the nine months ended September 30, 2019 and 2018, excluded from the denominator 869,249 and 142,859 shares, respectively, of common stock warrants because their effect would have been anti-dilutive.