Note 7 - Embedded Derivatives Liabilities

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Discussion of Hybrid Instruments and Embedded Derivatives [Text Block]

7. Embedded Derivatives Liabilities 

Derivative Warrant Liability

There were no warrants sold by the Company during the nine months ended September 30, 2021. On September 13, 2021, the Series I warrants expired.

The following table sets forth information pertaining to shares issued upon the exercise of warrants as of September 30, 2021:

	Issuance Date	Expiration Date	Exercise Price as of September 30, 2021		Shares Underlying Warrants on Issuance Date		Shares Issued upon Warrant Exercises as of September 30, 2021		Shares Underlying Warrants Outstanding as of September 30, 2021
Series K Warrants	2/17/2017	2/17/2022	$	2.00		315,986		308,860		7,126
Series 2020-A Warrants (1)	7/6/2020	7/6/2025	$	0.60		30,000,000		29,909,392		90,608
						30,315,986		30,218,252		97,734

(1)   The Series 2020-A Warrants are equity-classified warrants.

During the nine months ended September 30, 2021, common stock was issued as a result of exercise of warrants as shown below (dollars in thousands):

	Common Stock Issued		Proceeds
Series K Warrants		200	$	1
Series 2020-A Warrants		1,866,558		1,120
		1,866,758	$	1,121