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Fair Value of Financial Instruments
6 Months Ended
Jun. 30, 2025
Fair Value of Financial Instruments [Abstract]  
Fair Value of Financial Instruments
Note 5—Fair Value of Financial Instruments
 
The Company’s financial instruments consist of cash and cash equivalents and warrants.
 
Pursuant to the requirements of Accounting Standards Codification (“ASC”) Topic 820 “Fair Value Measurement,” the Company’s financial assets and liabilities measured at fair value on a recurring basis are classified and disclosed in one of the following three categories:
 
Level 1 - Financial instruments with unadjusted quoted prices listed on active market exchanges.
 
Level 2 - Financial instruments lacking unadjusted, quoted prices from active market exchanges, including over-the-counter traded financial instruments. The prices for the financial instruments are determined using prices for recently traded financial instruments with similar underlying terms as well as directly or indirectly observable inputs, such as interest rates and yield curves that are observable at commonly quoted intervals.
 
Level 3 - Financial instruments that are not actively traded on a market exchange. This category includes situations where there is little, if any, market activity for the financial instrument. The prices are determined using significant unobservable inputs or valuation techniques.
 
The fair value of the Company’s common and preferred stock warrant liabilities related to the warrants issued in the October 2022, October 2023 and April 2024 public offerings were calculated using a Monte Carlo valuation model and were classified as Level 3 in the fair value hierarchy.
 
        
(in thousands)
 June 30
2025
   December 31 
2024
 
Warrant liability Series A
$9,991  $ 
Warrant liability Series B
 3,674    
Warrant liability Series J
 409   468 
Total warrant liabilities
$14,074  $468 
 
The following is a roll-forward of the fair value of the Level 3 warrants:
 
    
(in thousands)
   
Balance at December 31, 2023
$2,843 
Exercise of Series J warrants
 (1,357
April 24, 2024, issuance of common warrants
 7,813 
Exercise of April 2024 warrants
 (1,373
Reclassification of April 2024 warrants to equity
 (2,844
Change in fair value
 (4,614
Balance at December 31, 2024
 468 
June 10, 2025, issuance of common warrants
 14,547 
Change in fair value
 (941
Balance at June 30, 2025
$14,074