Common Stock Warrants (Tables)

6 Months Ended

Jun. 30, 2024

Warrants and Rights Note Disclosure [Abstract]

Summary of Fair Value of the Warrants Estimated on Date of Grant Using Assumptions

The fair value of the warrants issued to placement agents in 2024 and 2023 was estimated on the date of grant using the following assumptions:

	2024		2023
	Minimum	Maximum	Minimum	Maximum
Expected life (in years)	5.0	5.0	4.0	5.0
Expected volatility	118.6%	118.6%	116.1%	123.9%
Risk-free interest rate	4.50%	4.50%	3.98%	4.24%
Dividend yield	0%	0%	0%	0%

Summary of the Company's Outstanding Warrants

A summary of the Company’s outstanding warrants as of June 30, 2024 is as follows:

Class of Shares	Number of Warrants		Exercise Price		Expiration Date
Common Stock		500	$	104.00	July 1, 2026
Common Stock		500	$	104.00	November 15, 2026
Common Stock		1,727	$	625.00	November 10, 2026
Common Stock		10,000	$	31.25	August 9, 2027
Common Stock		13,000	$	6.60	July 10, 2028
Common Stock		20,500	$	4.80	July 14, 2028
Common Stock		13,270	$	4.92	August 4, 2028
Common Stock		188,400	$	0.935	May 9, 2029
Common Stock		4,710,000	$	0.85	May 13, 2025
Common Stock		7,065,000	$	0.85	May 14, 2029
Total		12,022,897