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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Summary of Options Granted and Outstanding The following table summarizes information about these options granted and outstanding:
Number of
Shares
Subject to
Options
Outstanding
Weighted-
Average
Exercise Price
Per Share
Weighted-
Average
Remaining
Contractual
Life (In Years)
Aggregate
Intrinsic Value
(In Thousands)
Outstanding — December 31, 2022
8,428,441 $3.65 7.7$115 
Granted612,276 3.79 
Expired— — 
Cancelled(161,374)6.82 
Exercised(4,094)0.83 
Outstanding — March 31, 2023
8,875,249 $3.61 7.6$9,755 
Vested and expected to vest at March 31, 2023
8,497,717 $3.57 7.6$9,630 
Vested and exercisable at March 31, 2023
4,890,492 $3.02 6.7$7,562 
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
The following table summarizes information about RSUs granted and outstanding under the 2021 Plan:
Number of AwardsWeighted-Average Grant Date Fair Value
Outstanding — December 31, 2022— $— 
Granted347,824 3.79 
Forfeited(388)3.80 
Vested— — 
Outstanding — March 31, 2023347,436 $3.79 
Schedule of Impact of Stock-based Compensation Expense in the Statements of Operations
The following table presents the impact of stock-based compensation expense in the statements of operations for the periods indicated (in thousands):
Three Months Ended
March 31,
20232022
Research and development expense$349 $383 
Sales and marketing expense184 313 
General and administrative expense771 526 
Total employee stock-based compensation$1,304 $1,222 
Share-Based Payment Arrangement, Nonvested Award, Cost
The information about unrecognized stock-based compensation expense for outstanding unvested stock options and RSUs as of March 31, 2023 was as follows (in thousands, except years):
Unrecognized Stock-Based Compensation ExpenseWeighted-Average Period of Recognition (in years)
Stock Options$10,071 2.4
RSUs1,013 3.9
Total unrecognized stock-based compensation expense$11,084