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Stock Based Compensation (Tables)
3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Total Stock-Based Compensation
The Company recorded total stock-based compensation for its outstanding stock options and warrants in its Statements of Operations as follows (in thousands):
Three Months Ended March 31,
20252024
Research and development$160 $566 
General and administrative275 589 
Total stock-based compensation expense$435 $1,155 
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions
The following table summarizes the range of assumptions used to estimate the fair value of stock options issued using the Black-Scholes-Merton option pricing model:
Three Months Ended March 31,
20252024
Stock pricen/a$5.19
Exercise pricen/a$5.19
Expected volatilityn/a97.06%
Risk free interest ratesn/a4.12%
Expected term (years)n/a
5 to 6.25
Schedule of Share-Based Payment Arrangement, Option, Activity
The following table summarizes the activity for stock options for the three months ended March 31, 2025:
OptionsWeighted-
Average
Exercise Price
Weighted Average
Remaining
Contractual Term
(in years)
Aggregate
Intrinsic
Value (in
thousands)
Outstanding at December 31, 20242,587,129 $6.14 7.9$— 
Issued— $— 
Exercised— $— 
Forfeited and cancelled(44,062)$3.55 
Outstanding at March 31, 20252,543,067 $6.18 7.6$— 
Exercisable at March 31, 20251,435,229 $7.40 6.4$— 
Schedule of Share-Based Payment Award, Warrants, Valuation Assumptions
The following table summarizes the range of assumptions used to estimate the fair value of warrants issued using the Black-Scholes-Merton option pricing model:
Three Months Ended March 31,
20252024
Stock pricen/a
$5.19
Exercise pricen/a
$5.19
Expected volatilityn/a
97.06%
Risk free interest ratesn/a
4.12%
Expected term (years)n/a
6.25
Schedule of Warrants, Activity
The following table summarizes the activity for warrants for the three months ended March 31, 2025:
WarrantsWeighted-
Average
Exercise Price
Weighted Average
Remaining Contractual Term
(in years)
Aggregate
Intrinsic
Value (in
thousands)
Outstanding at December 31, 20242,041,563 $4.32 4.7$— 
Issued— $— 
Exercised— $— 
Forfeited and cancelled— $— 
Outstanding at March 31, 20252,041,563 $4.32 4.4$— 
Exercisable at March 31, 2025753,450 $6.50 3.2$—