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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of weighted-average assumptions of fair value stock option issued to employees
The fair value of each stock option issued to employees was estimated at the date of grant using the Black-Scholes model with the following weighted-average assumptions:
Six months ended June 30,
20252024
Expected volatility114.1 %108.7 %
Expected term (years)6.06.0
Risk-free interest rate4.4 %4.0 %
Expected dividend yield— %— %
Schedule of share based compensation expense
Share based compensation expense is classified in the unaudited condensed consolidated statements of operations and comprehensive loss as follows (in thousands):
Three months ended June 30,Six months ended June 30,
2025202420252024
Research and development$(1)$505 $67 $1,217 
General and administrative(280)690 120 1,593 
Total$(281)$1,195 $187 $2,810