XML 105 R26.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation​ (Tables)
 3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Option, Activity
A summary of the Company’s stock option activity is as follows:
Number of
Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Life (Years)
Aggregate
Intrinsic
Value
(In millions)
Outstanding as of January 1, 20229,444,221 $0.12 8.66$55.9 
Exercised(753,261)0.12 2.7 
Expired/forfeited(86,324)0.13 
Outstanding as of March 31, 2022
8,604,636 0.12 8.4140.4 
Exercisable as of March 31, 2022
952,603 0.12 8.304.5 
Vested and expected to vest as of March 31, 2022
8,604,636 0.12 8.4140.4 
Share-based Payment Arrangement, Restricted Stock Unit, Activity
A summary of the Company’s RSU activity is as follows:
Number of
Shares
Weighted
Average
Grant Price
Outstanding as of January 1, 202236,249,396 $6.53 
Granted1,462,209 3.06 
Vested(300,014)5.07 
Forfeited(624,223)7.19 
Outstanding as of March 31, 2022
36,787,368 6.39 
Share-based Payment Arrangement, Expensed and Capitalized, Amount
The following table presents stock-based compensation expense included in each respective expense category in the statements of operations and comprehensive loss (in millions):
Three Months Ended March 31,
20222021
Research and development$5.4 $0.7 
General and administrative19.1 0.2 
Total stock-based compensation expense$24.5 $0.9 
Share-based Payment Arrangement, Warrant Activity
A summary of the Company’s warrant activity is as follows:
Number of
Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Life (Years)
Aggregate
Intrinsic
Value
(In millions)
Outstanding as of January 1, 20228,644,932 $0.01 8.87$52.1 
Issued— — 
Exercised— — — 
Outstanding as of March 31, 2022
8,644,932 0.01 8.8752.1 
Vested and exercisable as of March 31, 2022
1,775,202 $0.01 3.82$8.5