13. Equity

The Company is authorized to issue one class of shares designated as “Common Stock”. The number of shares of common stock authorized to be issued is 217,000,000 shares.

At December 31, 2019, outstanding warrants to purchase shares of common stock are as follows:


Shares Underlying
Outstanding	Exercise		Expiration
Warrants	Price		Date
2,980	$	1,505.00	March 16, 2020
1,991	$	567.00	March 31, 2021
597,881	$	21.00	May 10, 2022
1,249,955	$	5.60	October 16, 2023
1,200	$	1,680.00	None
1,854,007