EARNINGS PER SHARE

Basic earnings per share ("EPS") is computed by dividing net income attributable to the Company by the weighted-average number of common shares outstanding during the period. The computation of diluted EPS is similar to the computation of basic EPS except that the numerator is increased to exclude charges that would not have been incurred, and the denominator is increased to include the number of additional common shares that would have been outstanding (using the if-converted and treasury stock methods), if securities containing potentially dilutive common shares (stock options and restricted stock units but excluding options to purchase fractional shares resulting from the Company's December 2010 1-for-10 reverse stock split) had been converted to common shares, and if such assumed conversion is dilutive.

The following is a reconciliation of the weighted-average shares outstanding used in the calculation of basic and diluted EPS for the three months ended March 31, 2019 and 2018 (in thousands, except per share data):



	Three Months Ended March 31,
	2019		2018
Net income attributable to Heska Corporation	$	814	$	2,155

Basic weighted-average common shares outstanding	7,459		7,102
Assumed exercise of dilutive stock options and restricted shares	506		609
Diluted weighted-average common shares outstanding	$	7,965	$	7,711

Basic earnings per share attributable to Heska Corporation	$	0.11	$	0.30
Diluted earnings per share attributable to Heska Corporation	$	0.10	$	0.28

The following stock options and restricted shares were excluded from the computation of diluted EPS because they would have been anti-dilutive (in thousands):



	Three Months Ended March 31,
	2019	2018
Stock options	86	244