10.   Earnings Per Share

The following table reconciles the numerators and denominators used in computations of the basic and diluted EPS for the three and nine months ended September 30:

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Approximately 4.6 million, and 4.3 million weighted average shares issuable under stock-based awards were not included in the diluted EPS calculation in the three and nine months ended September 30, 2021, respectively, because they were antidilutive. Approximately 9.2 million, and 7.5 million weighted average shares issuable under stock-based awards were not included in the diluted EPS calculation in the three and nine months ended September 30, 2020, respectively, because they were also antidilutive.

11. Earnings Per Share

The following table reconciles the numerators and denominators used in computations of the basic and diluted EPS:

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Approximately 7,516, 9,265, and 17,962 weighted average shares issuable under stock-based awards were not included in the diluted EPS calculation for the years ended December 31, 2020, 2019 and 2018, respectively, because they were antidilutive.