August 31,

2020

May 31,

2020

Convertible debenture in the principal amount of $4,000,000 (the “U.S. Convertible Debenture 1”) dated October 31, 2018, which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 1. The U.S. Convertible Debenture 1 matures on a date that is three years following issuance. The U.S. Convertible Debenture 1 is convertible into units (the “Convertible Debenture Units”) at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. On July 26, 2019, U.S. Convertible Debenture 1 was amended such that, should the Company issue or sell common stock or equity securities convertible into common stock at a price less than the conversion price of the U.S. Convertible Debenture 1, the conversion price of Convertible Debenture 1 will be reduced to such issuance price, and the exercise price of the warrant issuable in connection with Convertible Debenture 1 will be exercisable at a price equal to 137.5% of the adjusted conversion price at the time of conversion. The U.S. Convertible Debenture 1 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 1 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $3,254,896 on the U.S. Convertible Debenture 1. During the three months ended August 31, 2020 and 2019, $271,241 and $271,241 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $90,089 and $83,791 on the U.S. Convertible Debenture 1, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $0 and $82,688 from accrued interest to principal of the U.S. Convertible Debenture 1, respectively.

Convertible debenture in the principal amount of $1,000,000 (the “U.S. Convertible Debenture 2”) dated October 31, 2018, which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 2. The U.S. Convertible Debenture 2 matures on a date that is three years following issuance. The U.S. Convertible Debenture 2 is convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. On July 26, 2019, U.S. Convertible Debenture 1 was amended such that, should the Company issue or sell common stock or equity securities convertible into common stock at a price less than the conversion price of the U.S. Convertible Debenture 2, the conversion price of Convertible Debenture 2 will be reduced to such issuance price, and the exercise price of the warrant issuable in connection with Convertible Debenture 2 will be exercisable at a price equal to 137.5% of the adjusted conversion price at the time of conversion. The U.S. Convertible Debenture 2 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 2 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $813,724 on the U.S. Convertible Debenture 2. During the three months ended August 31, 2020 and 2019, $67,810 and $67,810 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $22,523 and $20,948 on the U.S. Convertible Debenture 2, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $0 and $20,672 from accrued interest to principal of the U.S. Convertible Debenture 2, respectively.

August 31,

2020

May 31,

2020

Convertible debenture in the principal amount of $100,000 (the “U.S. Convertible Debenture 3”) dated October 24, 2018, which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 3. The U.S. Convertible Debenture 3 matures on a date that is three years following issuance. The U.S. Convertible Debenture 3 is convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. On July 26, 2019, U.S. Convertible Debenture 3 was amended such that, should the Company issue or sell common stock or equity securities convertible into common stock at a price less than the conversion price of the U.S. Convertible Debenture 3, the conversion price of Convertible Debenture 3 will be reduced to such issuance price, and the exercise price of the warrant issuable in connection with Convertible Debenture 3 will be exercisable at a price equal to 137.5% of the adjusted conversion price at the time of conversion. The U.S. Convertible Debenture 3 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 3 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $75,415 on the U.S. Convertible Debenture 3. During the three months ended August 31, 2020 and 2019, $6,285 and $6,285 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $2,252 and $2,098 on the U.S. Convertible Debenture 3, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $0 and $2,070 from accrued interest to principal of the U.S. Convertible Debenture 3, respectively.

Convertible debenture in the principal amount of $532,000 (the “U.S. Convertible Debenture 4”) dated October 25, 2018, which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 4. The U.S. Convertible Debenture 4 matures on a date that is three years following issuance. The U.S. Convertible Debenture 4 is convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. On July 26, 2019, U.S. Convertible Debenture 4 was amended such that, should the Company issue or sell common stock or equity securities convertible into common stock at a price less than the conversion price of the U.S. Convertible Debenture 4, the conversion price of Convertible Debenture 4 will be reduced to such issuance price, and the exercise price of the warrant issuable in connection with Convertible Debenture 4 will be exercisable at a price equal to 137.5% of the adjusted conversion price at the time of conversion. The U.S. Convertible Debenture 4 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 4 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $416,653 on the U.S. Convertible Debenture 4. During the three months ended August 31, 2020 and 2019, $34,721 and $34,721 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $11,983 and $11,156 on the U.S. Convertible Debenture 4, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $0 and $11,010 from accrued interest to principal of the U.S. Convertible Debenture 4, respectively.

August 31,

2020

May 31,

2020

Convertible debenture in the principal amount of $150,000 (the “U.S. Convertible Debenture 5”) dated October 26, 2018,  which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 5. The U.S. Convertible Debenture 5 matures on a date that is three years following issuance. The U.S. Convertible Debenture 5 is convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. The U.S. Convertible Debenture 5 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 5 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $120,100 on the U.S. Convertible Debenture 5. During the three months ended August 31, 2020 and 2019, $10,008 and $10,008 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $3,378 and $3,145 on the U.S. Convertible Debenture 5, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $0 and $3,104 from accrued interest to principal of the U.S. Convertible Debenture 5, respectively.

Convertible debenture payable in the principal amount of $75,000 (the “U.S. Convertible Debenture 6”) dated October 26, 2018, which bears interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the U.S. Convertible Debenture 6. The U.S. Convertible Debenture 6 matures on a date that is three years following issuance. The U.S. Convertible Debenture 6 is convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. The U.S. Convertible Debenture 6 has other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The U.S. Convertible Debenture 6 is an unsecured obligation of the Company and ranks pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. The Company recorded a discount in the amount of $60,049 on the U.S. Convertible Debenture 6. During the three months ended August 31, 2020 and 2019, $5,005 and $5,004 of this discount was charged to operations, respectively. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $1,689 and $1,572 on the U.S. Convertible Debenture 6, respectively. Also, during the three months ended 31, 2020 and 2019, the Company transferred the amounts of $0 and $1,552 from accrued interest to principal of the U.S. Convertible Debenture 6, respectively.

August 31,

2020

May 31,

2020

Convertible debentures payable in the aggregate principal amount of $12,012,000 (the “Canaccord Debentures”) dated December 12, 2018, which bear interest, payable quarterly, at a rate of 8% per annum, with interest during the first eighteen months following issuance being payable by increasing the then-outstanding principal amount of the Canaccord Debentures. The Canaccord Debentures mature on a date that is three years following issuance. The Canaccord Debentures are convertible into Convertible Debenture Units at a conversion price of $0.80 per Convertible Debenture Unit. Each Convertible Debenture Unit consists of (i) one share of the Company’s common stock, and (ii) one-half of one warrant, with each warrant exercisable for three years to purchase a share of common stock at a price of $1.10. The value of the warrants will be recorded when the issuance becomes probable. The Canaccord Debentures have other features, such as mandatory conversion in the event the common stock trades at a particular price over a specified period of time and required redemption in the event of a “Change in Control” of the Company. The Canaccord Debentures are unsecured obligations of the Company and rank pari passu in right of payment of principal and interest with all other unsecured obligations of the Company. During the three months ended November 30, 2019, in two separate transactions, principal in the aggregate amount of $25,857 was converted into an aggregate of 32,321 shares of the Company’s common stock, and warrants to purchase 16,160 shares of common stock. There were no gains or losses recorded on these conversions because they were done in accordance with the terms of the original agreement. No discount was recorded for the fair value of the warrants issued. Because the market price of the Company’s common stock was less than the conversion price on the date of issuance of the Canaccord Debentures, a discount was not recorded on the Canaccord Debentures. During the three months ended August 31, 2020 and 2019, the Company accrued interest in the amounts of $266,436 and $248,935 on the Canaccord Debentures, respectively. Also, during the three months ended August 31, 2020 and 2019, the Company transferred the amounts of $212,601 and $245,761 from accrued interest to principal of the Canaccord Debentures, respectively.

August 31,

2020

May 31,

2020

Total - Convertible Notes Payable

Less: Discount

)

)

Convertible Notes Payable, Net of Discounts

Total - Convertible Notes Payable, Net of Discounts, Current Portion

Total - Convertible Notes Payable, Net of Discounts, Long-term Portion

August 31,

2020

August 31,

2019

Discounts on notes payable amortized to interest expense – 3 months ended August 31, 2020 and 2019, respectively