NOTE 15 – WARRANTS TO PURCHASE COMMON STOCK

The following table summarizes information with respect to outstanding warrants to purchase common stock of the Company at December 31, 2021:

During the year ended December 31, 2021, 3,400 warrants from the February 2020 Financing, with an exercise price of $0.57, were exercised for proceeds of approximately $2,000.

During the year ended December 31, 2021, 5,441 and 474 warrants with a per share exercise price of $630 and $687.50, respectively, expired.

During the year ended December 31, 2020, 2.3 million warrants from the November 2019 financing, with an exercise price of $0.57, were exercised for proceeds of approximately $1.3 million. During the year ended December 31, 2020, 2.3 million warrants from the November 2019 financing, with an exercise price of $0.50, were exercised for proceeds of approximately $1.2 million.

During the year ended December 31, 2020, 13.0 million warrants from the February 2020 financing, with an exercise price of $0.57, were exercised for proceeds of approximately $7.5 million.

During the year ended December 31, 2020, 2,500 warrants with a per share exercise price of $0.50 expired.