Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation

Stock-Based Compensation
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
We recorded stock-based compensation expense, including expense related to our employee stock purchase plan, as follows:
Three Months Ended June 30, Six Months Ended June 30,
2021 2020 2021 2020
Stock-based compensation expense $ 1,349  $ 430  $ 2,115  $ 859 
Our compensation expense is included in selling, general and administrative expenses in the condensed consolidated statements of income. As of June 30, 2021, there was $29,160 of unrecognized compensation expense related to non-vested stock option awards that is expected to be recognized over a weighted-average period of 3.0 years.
Stock Option Grants
During the six months ended June 30, 2021, we granted 911 common stock options to certain employees under our 2020 Stock Incentive Plan, which have a contractual life of ten years and vest over a five-year period. We did not grant awards to individuals who were not either an employee or director of ours during the six months ended June 30, 2021 and 2020.