XML 42 R28.htm IDEA: XBRL DOCUMENT v3.24.3
Share-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity
The following table summarizes the stock option activity during the nine months ended September 30, 2024:
Stock
Option
Shares		Weighted Average
Exercise
Price		Weighted Average
Remaining
Contractual
Term (in Years)		Aggregate
Intrinsic
Value (in thousands)
Outstanding, January 1, 20244,579,659 $14.11 8.37$25 
Granted1,461,715 1.87 
Exercised— — 
Expired/cancelled(785,145)11.79 
Outstanding as of September 30, 20245,256,229 $10.99 8.15$290 
Options exercisable as of September 30, 20242,629,899 $14.04 7.57$78 
Vested and expected to vest as of September 30, 20245,256,229 $10.99 8.15$290 
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
Activity with respect to the Company’s restricted stock units during the nine months ended September 30, 2024 is as follows:
SharesWeighted Average
Grant Date Fair Value
Nonvested shares at January 1, 202432,558 $4.30 
Granted308,700 1.92 
Forfeited(23,850)1.92 
Nonvested shares at current period end317,408 $2.16 
Schedule of Recognized Compensation Cost Related to Employee and Non-employee Stock-Based Compensation Activity
The Company recognized the following compensation cost related to employee and non-employee share-based compensation activity for the periods presented (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2024202320242023
Selling, general and administrative$1,590 $1,931 $5,704 $5,417 
Research and development967 1,118 3,281 3,426 
Total$2,557 $3,049 $8,985 $8,843 
Schedule of Stock Options Valuation Assumptions
The calculation was based on the following assumptions:
Three Months Ended September 30, (1)Nine Months Ended September 30,
202320242023
Weighted average grant date fair value (per share)$4.77$1.39$7.78
Risk-free interest rate
4.06% - 4.34%
4.13% - 4.29%
3.42% - 4.33%
Expected volatility
97.58% - 101.03%
89.22% - 91.46%
89.94% - 101.03%
Expected term (in years)
5.15 - 6.08
5.00 - 6.08
5.15 - 6.08
Expected dividend yield———
(1) No awards were granted during the three months ended September 30, 2024