Earnings per Share

12 Months Ended

Sep. 27, 2020

The following table sets forth the number of weighted-average shares used to compute basic and diluted EPS:


	Fiscal Year Ended
	September 27, 2020		September 29, 2019		September 30, 2018
	(in thousands, except per share data)
Net income attributable to Tetra Tech	$	173,859	$	158,668	$	136,883
Weighted-average common shares outstanding – basic	54,235		54,986		55,670
Effect of diluted stock options and unvested restricted stock	787		950		928
Weighted-average common stock outstanding – diluted	55,022		55,936		56,598

Earnings per share attributable to Tetra Tech:
Basic	$	3.21	$	2.89	$	2.46
Diluted	$	3.16	$	2.84	$	2.42

For fiscal 2020 and 2019, no options were excluded from the calculation of dilutive potential common shares. For fiscal 2018, 0.1 million options were excluded from the calculation of dilutive potential common shares. These options were not included in the computation of dilutive potential common shares because the assumed proceeds per share exceeded the average market price per share for that period. Therefore, their inclusion would have been anti-dilutive.