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Fair Value Measurements
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Fair Value Measurements [Abstract]    
Fair Value Measurements

6. Fair Value Measurements

 

The following table presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2025 and December 31, 2024, and indicates the fair value hierarchy of the valuation inputs the Company’s utilized to determine such fair value:

 

       June 30,   December 31, 
Description  Level   2025   2024 
Assets:            
Forward purchase agreement asset (Note 10)   3   $
-
   $155 
SEPA put rights asset (Note 12)   3    13    188 
Liabilities:               
Embedded derivative liability (Note 12)   3   $93   $80 

The Forward Purchase Agreement was fully settled on January 28, 2025 for $132 cash received by the Company. The fair value of the Company’s position under the Forward Purchase Agreement was calculated as of December 31, 2024 by multiplying the number of shares under the Forward Purchase Agreement by the market price at the settlement date estimated using a Monte-Carlo simulation incorporating the following assumptions:

 

   December 31, 
   2024 
Stock price  $53.70 
Risk-free interest rate   4.4%
Expected term (in years)   0.1 
Expected volatility   98%
Expected dividend yield   0%

 

The fair value of the SEPA put rights asset was estimated as the sum of the fair values of the put rights under each assumed advance notice over the term of the SEPA. The number of shares under each advance notice was based on the historical trading volumes of the Company’s stock taking into account the beneficial ownership and daily volume limitations. The fair value of the put rights under each advance notice was estimated using the Black Scholes model, incorporating the following assumptions:

 

   June 30,   December 31, 
   2025   2024 
Stock price  $6.30   $53.70 
Risk-free interest rate   3.7 - 4.4%   4.2%
Exercise price  $6.00   $51.60 
Expected term (in years)   0.4 - 1.4    1 - 2 
Expected volatility   92-97%   93-99%
Expected dividend yield   0%   0%
Number of shares under each advance notice   1,417    1,883 

 

The fair value of the Embedded Derivative Liability was estimated at $93 and $80 as of June 30, 2025 and December 31, 2024, respectively, based on the difference between the fair value of the convertible note with these embedded features and the fair value without each one of these embedded features. As of June 23, 2025, the issuance date of the Embedded Derivative Liability within the Second Convertible Note (see Note 12), the assumptions incorporated into the valuation model included the stock price of $7.20, the estimated future price per share of $6.30 (derived using Monte Carlo Simulation), the expected volatility of 98%, the risk-free rate of 4.32% and the term of 0.4 years. The change in fair value of the Embedded Derivative Liability from the issuance date of June 23, 2025 to June 30, 2025 was immaterial.

 

As of December 31, 2024, the assumptions incorporated into the valuation model included the stock price of $53.70, the estimated future price per share of $61.80 (derived using Monte Carlo Simulation), the expected volatility of 99%, the risk-free rate of 4.18% and the term of 0.9 years.

 

The aggregate fair value of the Embedded Derivative Liability associated with the conversions of the First Convertible Note of $703 (see Note 12) was based on the difference between the fair value of the shares of common stock issued upon conversion and the outstanding note balance

 

The changes in the fair value of Level 3 financial assets and liabilities for the six months ended June 30, 2025 are as follows:

 

   Forward
Purchase
Agreement
asset		   SEPA
Put Rights
Asset		  

Embedded

Derivative

Liability

 
Fair value as of January 1, 2025  $155   $188   $80 
Initial measurement at the issuance date (Note 12)             93 
Settlement   (132)   
-
    (703)
Change in fair value   (23)   (175)   623 
Fair value as of June 30, 2025  $
-
   $13   $93 
6.Fair Value Measurements

 

The following table presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2024, and indicates the fair value hierarchy of the valuation inputs the Company’s utilized to determine such fair value:

 

       December 31, 
Description  Level   2024 
Assets:          
Forward purchase agreement asset (Note 11)   3   $       155 
SEPA put rights asset (Note 13)   3    188 
Liabilities:          
Embedded derivative liability (Note 13)   3   $80 

 

There were no assets or liabilities measured at fair value on a recurring basis as of December 31, 2023.

 

The fair value of the Company’s position under the Forward Purchase Agreement was calculated by multiplying the number of shares under the Forward Purchase Agreement by the market price at the settlement date estimated using a Monte-Carlo simulation incorporating the following assumptions:

 

   November 13,   December 31, 
   2024   2024 
Stock price  $173.10   $53.70 
Risk-free interest rate   4.6%   4.4%
Expected term (in years)   0.3    0.1 
Expected volatility   90%   98%
Expected dividend yield   0%   0%

 

The fair value of the SEPA Put Rights was estimated as the sum of the fair values of the put rights under each assumed advance notice over the term of the SEPA. The number of shares under each advance notice was based on the historical trading volumes of the Company’s stock taking into account various beneficial ownership and daily volume limitations. The fair value of the put rights under each advance notice was estimated using the Black Scholes model, incorporating the following assumptions:

 

   November 13,   December 31, 
   2024   2024 
Stock price  $173.10   $53.70 
Risk-free interest rate   4.3%   4.2%
Exercise price   166.20    51.60 
Expected term (in years)   1 to 2 years    1 to 2 years 
Expected volatility   82-90%   93-99%
Expected dividend yield   0%   0%
Number of shares   5,500    1,883 

The fair value of the Embedded Derivative Feature was estimated at $69 at the issuance date based on the difference between the fair value of the convertible note with these embedded features and the fair value without each one of these embedded features. The assumptions incorporated into the valuation model as of November 13, 2024, the issuance date of the Convertible Note included the stock price of $173.10, the estimated future price per share of $130.80 (derived using Monte Carlo Simulation), the expected volatility of 90%, the risk-free rate of 4.31% and the term of 1 year. As of December 31, 2024 the assumptions incorporated into the valuation model included the stock price of $53.70, the estimated future price per share of $61.80 (derived using Monte Carlo Simulation), the expected volatility of 99%, the risk-free rate of 4.18% and the term of 0.9 years.

 

The changes in the fair value of Level 3 financial assets and liabilities for the year ended December 31, 2024 are as follows:

 

    Forward
Purchase
Agreement
asset		     SEPA
Put Rights
Asset		     Embedded
Derivative Liability		  
Fair value as of January 1, 2024   $ -     $       $ -  
Initial measurement at the issuance date     494       1,551       69  
Change in fair value     (339 )     (1,363 )     11  
                         
Fair value as of December 31, 2024   $ 155     $ 188     $ 80