Share purchase warrants outstanding as at February 28, 2021 are:

Warrants exercisable for 5,476,311 common shares at exercise prices ranging from $0.14 and $1.50 per share expired during the six months ended February 28, 2021.

On September 17, 2020 and December 9, 2020, warrants for 2,268,169 and 1,176,470 shares were exercised at an exercise price of $0.03 per share for gross proceeds of $103,339.

On September 30, 2020, the Company issued warrant exercisable for 4,545,454 shares to a convertible debt note holder. The fair value of the warrants granted was estimated at $101,475 using the relative fair value method. In addition, warrants valued on debt extinguishment agreements entered into with certain convertible note holders, whereby the exercise price and in certain cases, the expiry date of the warrant were amended, amounted to $149,354. 

The fair value of share purchase warrants was estimated using the Black-Scholes valuation model utilizing the following weighted average assumptions: