v3.26.1
STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of stock option activity
The following table presents the outstanding stock option activity:
Number of OptionsWeighted
Average
Exercise
Price Per
Share		Weighted
Average
Remaining
Contractual
Term
(years)
Outstanding as of December 31, 2025175,578 20.75 8.8
Granted1,053,288 1.61 9.9
Exercised— — — 
Forfeited(10,002)3.36 — 
Expired(140)3,985.71 — 
Outstanding as of June 30, 20261,218,724 
(1)
3.89 9.3
Exercisable as of June 30, 2026171,312 17.72 5.6
(1) Includes options related to 603 shares that are inducement awards and not granted under the 2018 Plan.
Schedule of share-based payment award, stock options, valuation assumptions
The weighted average grant date fair value of options granted during the three- and six-month periods ended June 30, 2026 was $1.38 per share based on the following assumptions used in the Black-Scholes option pricing model:
Expected volatility116 %
Expected dividend yield—
Expected term (in years)5.9 years
Risk-free interest rate4.2 %
Schedule of stock-based compensation expense
The stock-based compensation expense was recorded as follows (in thousands):
Three Months Ended
June 30,		Six Months Ended
June 30,
2026202520262025
Research and development$5 $3 $7 $6 
Selling, general and administrative17787198175
Total stock-based compensation expense$182 $90 $205 $181