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Earnings per Share | 12 Months Ended
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Oct. 03, 2021
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per ShareThe following table sets forth the number of weighted-average shares used to compute basic and diluted EPS:
| Fiscal Year Ended
| October 3, 2021 |  | September 27, 2020 |  | September 29, 2019
| (in thousands, except per share data)
Net income attributable to Tetra Tech | $ | 232,810 |  |  | $ | 173,859 |  |  | $ | 158,668 |
Weighted-average common shares outstanding – basic | 54,078 |  |  | 54,235 |  |  | 54,986 |
Effect of diluted stock options and unvested restricted stock | 597 |  |  | 787 |  |  | 950 |
Weighted-average common stock outstanding – diluted | 54,675 |  |  | 55,022 |  |  | 55,936 |
Earnings per share attributable to Tetra Tech: |  |  |  |  |
Basic | $ | 4.31 |  |  | $ | 3.21 |  |  | $ | 2.89 |
Diluted | $ | 4.26 |  |  | $ | 3.16 |  |  | $ | 2.84 |
For fiscal 2021, 2020 and 2019, no options were excluded from the calculation of dilutive potential common shares.

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