v3.26.1
STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Mar. 31, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Fair Values of Stock Options Granted and Assumptions Used in Black-Scholes Model The weighted average fair value of stock options granted, and the assumptions used for the Black-Scholes option pricing model were as follows:

Three Months Ended March 31,
20262025
Weighted average fair value of stock options granted$1.84 $1.83 
Assumptions:
Risk-free interest rate
3.6%
4.1%
Expected volatility
109.7%
106.2% - 106.6%
Expected term (in years)
5.0
6.0
Schedule of Information on Stock Option Activity Information on stock option activity is as follows:
 
Options
Exercisable
Weighted Average
Exercise
Price Per
Share
Options
Outstanding
Weighted Average
Exercise
Price Per
Share
Balance as of December 31, 2025382,808$99.71 1,358,797$30.25 
Granted—— 81,1412.30 
Vested151,1302.60 —— 
Exercised—— —— 
Expired(5,305)352.41 (5,305)352.41 
Forfeited—— —— 
Balance as of March 31, 2026528,633$69.41 1,434,633$27.48 
Schedule of Stock-Based Compensation Expense

Stock-based compensation expense related to stock option awards is as follows:
 Three Months Ended March 31,
In Thousands20262025
Stock-based compensation expense$455 $232 
Stock-based compensation expense related to RSAs is as follows:
 Three Months Ended March 31,
In Thousands20262025
Stock-based compensation expense$619 $1,840 


Stock-based compensation expense related to RSUs is as follows:
 Three Months Ended March 31,
In Thousands20262025
Stock-based compensation expense$497 $427 
Certain consolidated statement of operations amounts were as follows:
Three Months Ended March 31,
In Thousands20262025
Stock-based compensation expense:
Research and development$528 $968 
Selling, general, and administrative1,043 1,531 
Total$1,571 $2,499 
Schedule of Nonvested Share Activity Information on RSA activity is as follows:
 
Restricted Stock
Awards
Weighted Average Grant
Date Fair Value
Unvested balance as of December 31, 202585,185$31.50 
Granted—— 
Vested(21,235)31.50 
Forfeited(1,309)31.50 
Unvested balance as of March 31, 202662,641$31.50 


Information on RSU activity is as follows:
 
Restricted Stock
Units
Weighted Average Grant
Date Fair Value
Unvested balance as of December 31, 20251,359,207$3.73 
Granted—— 
Vested(155,296)5.01 
Forfeited(32,647)2.75 
Unvested balance as of March 31, 20261,171,264$3.59 
Schedule of Grant Date Fair Value of Awards Vested

The total fair value of RSAs that vested is as follows:
 Three Months Ended March 31,
In Thousands20262025
Fair value of shares vested$54 $131 

The total fair value of RSUs that vested is as follows:
 Three Months Ended March 31,
In Thousands20262025
Fair value of shares vested$400 $34