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Stock-Based Incentive Compensation Plans (Tables)
3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Available for Grant
A summary of shares available for grant under the Company’s 2021 Equity Incentive Plan, or the 2021 Plan, is as follows:
Shares Available for Grant
Shares available for grant as of January 1, 20241,314,502 
Authorized1,391,173 
Granted/Awarded(770,044)
Cancelled188,145 
Withheld for taxes37,541 
Shares available for grant as of March 31, 2024
2,161,317 
Schedule of Stock Option Activity
A summary of stock option activity for the three months ended March 31, 2024 is set forth below:
Options Outstanding
Number of SharesWeighted-Average Exercise PriceWeighted Average Remaining Contractual Term (in Years)
Balances as of January 1, 20242,588,765 $4.51 7.17
Granted288,170 $16.02 
Exercised(409,045)$1.76 
Cancelled(50,622)$9.67 
Balances at March 31, 2024
2,417,268 $6.23 7.86
Vested and exercisable at March 31, 2024
1,357,081 $5.00 7.03
Vested and expected to vest at March 31, 2024
2,417,268 $6.23 7.86
Schedule of Restricted Stock Units
Activity with respect to restricted stock units was as follows:
Number of Shares Underlying Outstanding Restricted Stock UnitsWeighted Average Grant Date Fair Value
Unvested, January 1, 20242,430,803 $6.52 
Granted481,874 $14.73 
Vested(522,483)$5.87 
Cancelled(137,523)$5.92 
Unvested, March 31, 2024
2,252,671 $8.46 
Schedule of Share-based Payment Arrangement, Expensed and Capitalized, Amount
The Company recognized stock-based compensation as follows (in thousands):
Three Months Ended March 31,
20242023
Cost of goods sold$162 $146 
Research and development809 500 
Selling, general and administrative1,569 1,479 
Total stock-based compensation$2,540 $2,125 
The above stock-based compensation expense related to the following equity-based awards (in thousands):
Three Months Ended March 31,
20242023
Stock options and restricted stock units$2,404 $2,071 
ESPP136 54 
Total stock-based compensation$2,540 $2,125