| Schedule of outstanding warrants to purchase common shares |
|
Date issued
|
|
Contractual life
(years)
|
|
Exercise price
|
|
Number outstanding
|
|
Expiration
|
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
37,500 |
|
August 11, 2022 |
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
11,876 |
|
August 16, 2022 |
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
25,625 |
|
August 22, 2022 |
|
April 2018
|
|
5 |
|
$
|
5.60 |
|
111,563 |
|
April 17, 2023 |
|
March 2020
|
|
3 |
|
$
|
0.60 |
|
31,000 |
|
March 23, 2023 |
|
April 2020
|
|
5 |
|
$
|
0.92 |
|
579,500 |
|
April 30, 2025 |
|
May 2021
|
|
5 |
|
$
|
1.375 |
|
224,000 |
|
May 27, 2026 |
|
July 2021
|
|
3 |
|
$
|
4.00 |
|
2,000,000 |
|
|
|
August 2021
|
|
3 |
|
$
|
6.50 |
|
2,595,488 |
|
August 25, 2024 |
|
August 2021
|
|
3 |
|
$
|
7.50 |
|
2,595,488 |
|
August 25, 2024 |
|
September 2021
|
|
5 |
|
$
|
9.50 |
|
11,299,999 |
|
September 8, 2026 |
| |
|
|
|
|
|
|
19,512,039 |
|
|
|
|
Date issued
|
|
Contractual life
(years)
|
|
Exercise
price
per share
|
|
Number
outstanding
|
|
Expiration
|
|
March 2016
|
|
5 |
|
$
|
500.00 |
|
150 |
|
|
March 4, 2021 |
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
37,500 |
|
|
August 11, 2022 |
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
11,876 |
|
|
August 16, 2022 |
|
August 2017
|
|
5 |
|
$
|
42.00 |
|
25,625 |
|
|
August 22, 2022 |
|
April 2018
|
|
5 |
|
$
|
5.60 |
|
111,563 |
|
|
April 17, 2023 |
|
March 2020
|
|
3 |
|
$
|
0.60 |
|
905,820 |
|
|
March 23, 2023 |
|
April 2020
|
|
5 |
|
$
|
0.92 |
|
1,694,000 |
|
|
April 30, 2025 |
| |
|
|
|
|
|
|
2,786,534 |
(1)
|
|
|
|