Note 12. Warrants

On April 19, 2022, two warrants were exercised for a total of 500,000 shares of common stock resulting in the Company receiving $0.5 million.

On April 19, 2022, the holder of the 250,000 shares of Series C Preferred Stock received a warrant to purchase 25,000 shares of common stock at the price of $9.00 per share.

On June 3, 2022, the Law Offices of Carl G. Hawkins exercised their warrant acquiring 35,000 shares at the strike price of $1.00 per share through the conversion of the accounts payable owed by the Company for services provided. The shares were issued in the name of Carl G. Hawkins.

On June 15, 2022, a former employee’s warrants for 125,000 shares of common stock expired, which was three months after they left the Company.

A summary of warrant activity for six months ended July 31, 2022 is as follows:

During the three months ended July 31, 2022, stock based compensation expense related to warrant grants was $589,000, which consisted of grants to employees of $317,000, directors of $209,000, and consultants of $63,000. During the six months ended July 31, 2022, stock based compensation expense related to warrant grants was $1,274,000, which consisted of grants to employees of $724,000, directors of $418,000, and consultants of $132,000. During the three and six months ended July 31, 2021, there was no stock based compensation expense associated with warrant grants.