Note 2. 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, 2017 included all of the Company’s outstanding stock options because the exercise price of the options was lower than the average market price during those periods. The computation for the three and six month periods ended June 30, 2016 excluded approximately 605,000 and 627,000 of the Company’s stock options, respectively, 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, 2017, excluded the weighted average impact of the 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. These 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, 2017.

The following table sets forth the computation of basic and diluted earnings per share for the three and six month periods ended June 30, 2017 and 2016:

	Three months ended June 30,				Six months ended June 30,
	2017		2016		2017		2016
Net income attributable to American Shared Hospital Services	$	113,000	$	93,000	$	406,000	$	144,000

Weighted average common shares for basic earnings per share		5,935,000		5,552,000		5,725,000		5,548,000
Diluted effect of stock options and restricted stock		208,000		16,000		196,000		16,000
Weighted average common shares for diluted earnings per share		6,143,000		5,568,000		5,921,000		5,564,000

Basic earnings per share	$	0.02	$	0.02	$	0.07	$	0.03
Diluted earnings per share	$	0.02	$	0.02	$	0.07	$	0.03