XML 81 R31.htm IDEA: XBRL DOCUMENT v3.25.0.1
STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of fair value of options granted
Fair value of options granted is determined using the Black-Scholes option-pricing model with the following weighted average assumptions:
20242023
Risk-free interest rate3.8 %5.3 %
Expected dividend yield— %— %
Expected volatility128 %128.0 %
Expected term (in years)10.05.0
Schedule of stock option activity
The stock option activity consists of the following:
Number of
Options 		Weighted
Average
Exercise
Price Per
Share		Weighted
Average
Remaining
Contractual
Term
(years)
Aggregate
Intrinsic
Value (1)
Outstanding as of December 31, 20222,314$2,040.00 3.9$— 
Granted1,661150.00 5.0— 
Exercised—— —— 
Forfeited(328)— —— 
Expired(2)— —— 
Outstanding as of December 31, 20233,6451,197.00 4.0— 
Granted144,2042.83 9.6— 
Exercised—— —— 
Forfeited(224)— —— 
Expired(9)— —— 
Outstanding as of December 31, 2024147,61627.13 9.5— 
Exercisable as of December 31, 202420,634
(2)
124.42 8.8— 
(1)
Calculated based on the difference between the estimated fair value of our stock and the exercise price of the underlying option. The estimated stock values used in the calculation was $2.83 and $150.00 per share for the years ended December 31, 2024 and 2023, respectively.
(2)
Includes options related to 603 shares that are inducement awards and not granted under the 2018 Plan.
Schedule of restricted stock unit activity
The restricted stock unit activity consists of the following:
Number of
Units		Weighted Average
Grant Date Fair Value Per Unit
Outstanding as of December 31, 2022156$325.20 
Granted—— 
Vested(156)325.20 
Forfeited—— 
Outstanding as of December 31, 2023—— 
Granted—— 
Vested—— 
Forfeited—— 
Outstanding as of December 31, 2024—— 
Schedule of stock-based compensation expense
The stock-based compensation expense was recorded as following (in thousands):
Years Ended December 31,
20242023
Research and development$13 $17 
General and administrative313 538 
(1)
Total stock-based compensation expense$326 $555 
(1)
Includes $100,000 related to stock issued in exchange for marketing services.