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Preferred Stock and Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2025
Common Stock Warrants and Pre-Funded Warrants [Member]  
Class Of Stock [Line Items]  
Schedule of Warrants to Purchase Common Stock Activity

The following table shows the warrants to purchase common stock activity:

 

 

 

Roll-Forward of Warrant Activity

 

 

 

Common Stock Warrants

 

 

Pre-Funded Warrants

 

 

Total

 

 

 

 

 

 

 

 

 

 

 

Balance as of December 31, 2024

 

 

15,778,451

 

 

 

17,274,293

 

 

 

33,052,744

 

Issued

 

 

 

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

Cancelled/Expired

 

 

(626,933

)

 

 

 

 

 

(626,933

)

Balance as of September 30, 2025

 

 

15,151,518

 

 

 

17,274,293

 

 

 

32,425,811

 

 

Schedule of Company's Outstanding Warrants to Purchase Shares of Common Stock

The following table summarizes the outstanding warrants as of September 30, 2025:

 

Date Issued

 

Number of Shares of Common Stock Issuable

 

 

Exercise Price

 

 

Expiration Date

 

 

 

 

 

 

 

 

 

2023 Securities Purchase Agreement common warrants

 

 

15,151,518

 

 

$

3.00

 

 

May 5, 2028

January 2021 pre-funded warrants

 

 

509,117

 

 

$

0.001

 

 

December 31, 2030

2023 Securities Purchase Agreement pre-funded warrants

 

 

3,844,153

 

 

$

0.001

 

 

N/A

2024 Securities Purchase Agreement pre-funded warrants

 

 

7,989,516

 

 

$

0.001

 

 

N/A

2024 Underwritten Offering pre-funded warrants

 

 

4,931,507

 

 

$

0.001

 

 

N/A

Balance as of September 30, 2025

 

 

32,425,811

 

 

 

 

 

 

Preferred Stock Warrants [Member]  
Class Of Stock [Line Items]  
Schedule of Warrants to Purchase Common Stock Activity

As of September 30, 2025, all warrants exercisable for shares of Series X1 Preferred Stock expired in accordance with their original terms.

 

 

 

Roll-Forward of Series X1 Non-Voting Convertible Preferred Warrant Activity

 

 

 

Total

 

 

 

 

 

Balance as of December 31, 2024

 

 

50,207.419

 

Issued

 

 

 

Exercised

 

 

 

Cancelled/Expired

 

 

(50,207.419

)

Balance as of September 30, 2025

 

 

 

Securities Purchase Agreement [Member]  
Class Of Stock [Line Items]  
Schedule of Assumptions Used in Black-Scholes Option Pricing Model to Determine Fair Value of Stock Options Granted

The following table presents the assumptions used in the Black-Scholes option pricing model to determine the fair value of the Common Warrants as of September 30, 2025 and December 31, 2024 as follows:

 

 

September 30,
2025

 

 

December 31,
2024

 

 

 

 

 

 

 

 

Risk-free interest rate

 

3.6%

 

 

4.4%

 

Expected stock price volatility

 

95.1%

 

 

96.4%

 

Expected term (in years)

 

2.8

 

 

3.5

 

Share price

 

$

2.59

 

 

$

4.14