Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.24.1.1.u2
Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation Arrangements by Share-based Payment Award
Tenth Pre-Paid Advance
Stock price $ 3.57 
Risk free interest rate 5.3  %
Interest rate 5.0  %
Expected volatility 150.8  %
Expected dividend yield —  %
Remaining term (in years) 0.5
The following table summarizes the Company’s stock-based compensation expense by line item for the three months ended March 31, 2024 and 2023 (in thousands):
Three months ended
March 31,
2024 2023
Research and development $ 630  $ 4,135 
Selling, general and administrative 10,324  5,701
Total $ 10,954  $ 9,836 
The fair value of the Warrants at the issuance date was measured using the Black-Scholes-Merton option pricing model. The key inputs used in the valuation were as follows:



Expected term (years) 10.0
Risk free interest rate 3.0  %
Expected volatility 91.3  %
Dividend yield —  %
Exercise price $ 49.45 
Stock price $ 83.49 
Expected term (year) 5.0
Expected volatility 131.1  %
Dividend yield —  %
Risk free rate 4.2  %
Estimated fair value per warrant $ 3.30 
Exercise price $ 1.37 
Stock price $ 3.57 
The fair value of the warrants was measured using the Black-Scholes-Merton option pricing model. The key inputs used in the valuation were as follows:
Expected term (years) 4.4
Expected volatility 131.1  %
Expected dividend rate —  %
Risk free rate 4.2  %
Estimated fair value per warrant $ 2.19 
Exercise price $ 29.90 
Stock price $ 3.57 
The warrants are liability classified and subject to periodic remeasurement. The fair value of the warrants was measured using the Black-Scholes option pricing model. The key inputs used in the valuation were as follows:

Expected term (years) 4.7
Expected volatility 131.1  %
Expected dividend rate —  %
Risk free rate 4.2  %
Estimated fair value per warrant $2.60
Exercise price $15.41
Stock price $3.57
The warrants are liability classified and subject to periodic remeasurement. The fair value of the warrants was measured using the Black-Scholes option pricing model. The key inputs used in the valuation were as follows:

Expected term (years) 4.5
Expected volatility 131.1  %
Expected dividend rate —  %
Risk free rate 4.2  %
Estimated fair value per warrant $2.55
Exercise Price $14.93
Stock Price $3.57
The key inputs used in the valuation were as follows:
Expected term (years) 4.8
Expected volatility 131.1  %
Expected dividend rate —  %
Risk free rate 4.2  %
Estimated fair value per warrant $ 2.63 
Exercise price $ 15.41 
Stock price $ 3.57 
The key inputs used in the valuation were as follows:
Expected term (years) 4.5
Expected volatility 131.1  %
Expected dividend rate —  %
Risk free rate 4.2  %
Estimated fair value per warrant $ 2.61 
Exercise price $ 12.91 
Stock price $ 3.57