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Standby Equity Purchase Agreement (Tables)
3 Months Ended
Mar. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair Value Measurement Inputs and Valuation Techniques Assumptions used in the valuation are described below:
March 31,
2025
December 31,
2024
Current stock price$5.52 $5.01 
Expected share price volatility70.0 %70.0 %
Risk-free interest rate3.9 %4.3 %
Expected term (years)3.363.61
Estimated dividend yield— %— %
The following table summarizes activity in the Public Warrants, Private Placement Warrants, Working Capital Warrants and Exchange Warrants in the three months ended March 31, 2025. There was no activity in the three months ended March 31, 2024.
SeriesBalance at
December 31, 2024
ExchangesIssuancesRetirements / ConversionsBalance at
March 31, 2025
Public Warrants1,751,8251,751,825 
Private Placement Warrants4,428,6484,428,648 
Working Capital Warrants1,000,0001,000,000 
The fair value of the Initial OrbiMed Warrant was measured using the Black-Scholes option pricing model. The key inputs used in the valuations were as follows:
March 31, 2025December 31, 2024
Expected term (years) 6.16.3
Risk free interest rate4.0%4.5%
Expected volatility70.0%70.0%
Dividend yield00
Exercise price$9.3722$9.3722
Stock price$5.52$5.01
The fair value of the Subsequent OrbiMed Warrant was measured using the Black-Scholes option pricing model. The key inputs used in the valuations were as follows:
March 31, 2025February 18, 2025
Expected term (years)6.97.0
Risk free interest rate4.1%4.1%
Expected volatility70.0%70.0%
Dividend yield00
Exercise price$5.4787$5.4787
Stock price$5.52$5.69
Assumptions used in the valuation are described below:
Valuation assumptions:March 31, 2025December 31, 2024
Expected draws$3,000$2,000
Expected probability of draws
25%
90 %
Risk-free interest rate4.3 %4.4 %