Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Stockholders' Equity

Schedule of warrants issued and outstanding

The following table presents information about warrants that are issued and outstanding at December 31, 2022:

Year Issued	Equity Instrument	Warrants Outstanding	Exercise Price		Date of Expiration
2018	Common Stock	699,962	$	72.00	6/21/2023
2019	Common Stock	331,858	$	37.50	2/7/2024
2021	Common Stock	498,356	$	2.10	12/14/2030
Total		1,530,176
Weighted average exercise price			$	41.75
Weighted average life in years					3.05

Schedule of reserved for future issuance

	December 31,	December 31,
	2022	2021
Series X Preferred Stock	5,242,501	5,242,501
Warrants for the purchase of common stock	1,530,176	1,530,380
Options outstanding to purchase common stock	2,253,431	1,346,733
Reserve under the 2015 Stock Incentive Plan and the 2022 Inducement Stock Incentive Plan	1,013,520	1,633,736
Shares reserved for the employee stock purchase plan	36,982	30,904
Total	10,076,610	9,784,254