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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2024
Stockholders' Equity Note [Abstract]  
Summary of Warrant Activity and Changes in Warrants Outstanding

A summary of warrant activity and changes in warrants outstanding, including both liability and equity classifications, is presented below:

 

Number of
Warrants

 

 

Weighted-Average
Exercise Price
Per Share

 

 

Weighted-Average
Remaining
Contractual Term

Balance outstanding, December 31, 2022

 

4,360,968

 

 

$

5.33

 

 

2.1 years

Expired

 

(1,553,020

)

 

$

10.54

 

 

 

Balance outstanding, December 31, 2023

 

2,807,948

 

 

$

2.45

 

 

1.9 years

Expired

 

(595

)

 

$

252.72

 

 

 

Balance outstanding, December 31, 2024

 

2,807,353

 

 

$

2.40

 

 

0.9 years

Schedule of Preferred Stock

The components of the liquidation preference for the Series A Convertible Preferred Stock were as follows:

 

 

As of December 31,

 

(in thousands)

 

2024

 

 

2023

 

Stated Value per share liquidation

 

$

606

 

 

$

606

 

Cumulative unpaid preferred stock dividends

 

 

486

 

 

 

462

 

Liquidation preference - Series A Convertible Preferred Stock

 

$

1,092

 

 

$

1,068