Per Share Amounts

Per share information has been computed based on the weighted average number of common shares and dilutive common share equivalents outstanding. The computation for the three and six-month periods ended June 30, 2019 excluded approximately 181,000 and 513,000, respectively, of the Company’s stock options because the exercise price of the options was higher than the average market price during those periods. The computation for the three and six-month periods ended June 30, 2018 excluded approximately 547,000 of the Company's stock options because the exercise price of the options was higher than the average market price during those periods.

Based on the guidance provided in accordance with ASC 260 Earnings Per Share (“ASC 260”), the weighted average common shares for basic earnings per share, for the three and six-month periods ended June 30, 2019 and 2018, excluded the weighted average impact of the unvested performance share awards, discussed below. These awards are legally outstanding but are not deemed participating securities and therefore are excluded from the calculation of basic earnings per share. The unvested shares are also excluded from the denominator for diluted earnings per share because they are considered contingent shares not deemed probable as of June 30, 2019.

The following table sets forth the computation of basic and diluted earnings per share for the three and six-month periods ended June 30, 2019 and 2018:



	Three Months ended June 30,				Six Months ended June 30,
	2019		2018		2019		2018
Net income attributable to American Shared Hospital Services	$	31,000	$	287,000	$	301,000	$	677,000

Weighted average common shares for basic earnings per share	5,876,000		5,834,000		5,862,000		5,826,000
Diluted effect of stock options and restricted stock	30,000		28,000		33,000		29,000
Weighted average common shares for diluted earnings per share	5,906,000		5,862,000		5,895,000		5,855,000

Basic earnings per share	$	0.01	$	0.05	$	0.05	$	0.12
Diluted earnings per share	$	0.01	$	0.05	$	0.05	$	0.12