Stockholders' Equity (Tables)
|
9 Months Ended |
Mar. 31, 2021 |
Class Of Stock [Line Items] |
|
Schedule of Stock Option Expense |
|
|
Three months ended
March 31, |
|
|
Nine months ended
March 31, |
|
|
|
2021
$ |
|
|
2020
$ |
|
|
2021
$ |
|
|
2020
$ |
|
Research and development |
|
|
508 |
|
|
|
23 |
|
|
|
1,171 |
|
|
|
55 |
|
General and administrative |
|
|
1,210 |
|
|
|
73 |
|
|
|
3,077 |
|
|
|
252 |
|
|
|
|
1,718 |
|
|
|
96 |
|
|
|
4,248 |
|
|
|
307 |
|
|
Schedule of Unvested Stock Options |
|
|
Number of
Options
(in thousands) |
|
|
Weighted
average
exercise
price
$ |
|
Unvested at June 30, 2020 |
|
|
858 |
|
|
|
0.98 |
|
Granted |
|
|
4,999 |
|
|
|
1.68 |
|
Vested |
|
|
(1,518 |
) |
|
|
1.46 |
|
Forfeited |
|
|
(14 |
) |
|
|
1.42 |
|
Unvested at March 31, 2021 |
|
|
4,325 |
|
|
|
1.62 |
|
|
Schedule of Warrants |
|
|
Number of
Warrants
(in thousands) |
|
|
Weighted
average
exercise
price
$ |
|
Balance – June 30, 2020 |
|
|
10,309 |
|
|
|
2.71 |
|
Issuance of Adgero Warrants |
|
|
2,314 |
|
|
|
3.18 |
|
Exercise of warrants (i) |
|
|
(4,871 |
) |
|
|
1.00 |
|
Warrants issued for services (ii) |
|
|
600 |
|
|
|
1.74 |
|
Expiry of warrants (iii) |
|
|
(126 |
) |
|
|
30.00 |
|
Balance – March 31, 2021 |
|
|
8,226 |
|
|
|
3.36 |
|
(i) |
A total of 4,399 2020 Investor Warrants were exercised at $1.00 per share and 472 warrants issued as either agent warrants or issued for services were exercised on a cashless basis for which 258 common shares were issued. |
(ii) |
Warrants issued for services are exercisable at various prices and expire at the various dates noted in the table below. |
(iii) |
The warrant expiries include the 2015 Investor Warrants, the 2015 Agent Warrants, and certain warrants issued for services. All of the expired warrants were exercisable at $30.00 per share. |
|
Schedule of Changes in Outstanding Warrants |
Description of warrants |
|
Number
(in thousands) |
|
|
Exercise
price $ |
|
|
Expiry date |
2020 Investor warrants |
|
|
3,338 |
|
|
|
1.00 |
|
|
August 16, 2024 |
2019 Investor warrants |
|
|
760 |
|
|
|
3.10 |
|
|
June 5, 2024 |
2019 Investor warrants |
|
|
280 |
|
|
|
12.50 |
|
|
September 22, 2022 |
2017 Investor warrants |
|
|
208 |
|
|
|
35.00 |
|
|
April 19, 2022 |
NBTS Warrants |
|
|
125 |
|
|
|
1.09 |
|
|
June 19, 2025 (i) |
Warrants issued for services |
|
|
6 |
|
|
|
17.80 |
|
|
January 25, 2023 |
Warrants issued for services |
|
|
34 |
|
|
|
11.70 |
|
|
February 27, 2023 |
Warrants issued for services |
|
|
12 |
|
|
|
9.00 |
|
|
September 15, 2023 |
Warrants issued for services |
|
|
2 |
|
|
|
9.00 |
|
|
October 11, 2023 |
Warrants issued for services |
|
|
280 |
|
|
|
0.75 |
|
|
November 18, 2023 |
Warrants issued for services |
|
|
125 |
|
|
|
0.64 |
|
|
January 20, 2024 |
Warrants issued for services |
|
|
330 |
|
|
|
1.49 |
|
|
September 22, 2023 |
Warrants issued for services |
|
|
50 |
|
|
|
1.82 |
|
|
November 13, 2023 |
Warrants issued for services |
|
|
100 |
|
|
|
1.47 |
|
|
January 20, 2024 |
Warrants issued for services |
|
|
70 |
|
|
|
2.75 |
|
|
February 17, 2024 |
Warrants issued for services |
|
|
50 |
|
|
|
2.38 |
|
|
February 25, 2024 |
2020 Underwriter Warrants |
|
|
30 |
|
|
|
1.15 |
|
|
August 14, 2022 |
2019 Agent warrants |
|
|
47 |
|
|
|
3.88 |
|
|
June 3, 2024 |
2018 Agent warrants |
|
|
40 |
|
|
|
12.50 |
|
|
September 20, 2022 |
2017 Agent warrants |
|
|
14 |
|
|
|
40.60 |
|
|
April 12, 2022 |
2016 Agent warrants |
|
|
10 |
|
|
|
40.00 |
|
|
May 12, 2021 |
Adgero Warrants |
|
|
1,206 |
|
|
|
3.18 |
|
|
April 8, 2021 |
Adgero Warrants |
|
|
353 |
|
|
|
3.18 |
|
|
August 31, 2021 |
Adgero Warrants |
|
|
756 |
|
|
|
3.18 |
|
|
January 17, 2022 |
|
|
|
8,226 |
|
|
|
|
|
|
|
(i) |
NBTS Warrants were issued in connection with respect to the NBTS Loan (note 7). |
|
Series C Warrants [Member] |
|
Class Of Stock [Line Items] |
|
Schedule of Changes in Outstanding Warrants |
Series C Agent Warrants |
|
Number |
|
|
Conversion
price
$ |
|
|
Number of
conversion
shares
(in
thousands) |
|
|
Cumulative
common
stock
dividends
(in
thousands) |
|
Series 1 |
|
|
1,934 |
|
|
|
1.16 |
|
|
|
1,667 |
|
|
|
1,167 |
|
Series 2 |
|
|
219 |
|
|
|
1.21 |
|
|
|
180 |
|
|
|
126 |
|
Series 3 |
|
|
296 |
|
|
|
1.15 |
|
|
|
257 |
|
|
|
180 |
|
|
|
|
2,449 |
|
|
|
|
|
|
|
2,104 |
|
|
|
1,473 |
|
|
Schedule of Conversion of Series C Preferred Stock to Series C Warrants |
|
|
Balance
June 30, 2020 |
|
|
Number of
Warrants Issued |
|
|
Number of
Warrants Exercised |
|
|
Balance,
March 31, 2021 |
|
|
Conversion
price
$ |
|
Issuance of Preferred Series C-1 Agent Warrants |
|
|
— |
|
|
|
1,959 |
|
|
|
(25 |
) |
|
|
1,934 |
|
|
|
1.16 |
|
Issuance of Preferred Series C-2 Agent Warrants |
|
|
— |
|
|
|
219 |
|
|
|
— |
|
|
|
219 |
|
|
|
1.21 |
|
Issuance of Preferred Series C-3 Agent Warrants |
|
|
— |
|
|
|
326 |
|
|
|
(30 |
) |
|
|
296 |
|
|
|
1.15 |
|
|
|
|
— |
|
|
|
2,504 |
|
|
|
(55 |
) |
|
|
2,449 |
|
|
|
|
|
|
Stock options [Member] |
|
Class Of Stock [Line Items] |
|
Schedule of Outstanding Under the Legacy Plan |
|
|
Number of
stock options
outstanding
(in thousands) |
|
|
Weighted
average
exercise
price |
|
Balance – June 30, 2020 |
|
|
1,559 |
|
|
|
4.61 |
|
Granted |
|
|
4,999 |
|
|
|
1.68 |
|
Exercised |
|
|
(69 |
) |
|
|
0.61 |
|
Expired |
|
|
(22 |
) |
|
|
41.44 |
|
Forfeited |
|
|
(14 |
) |
|
|
1.42 |
|
Balance – March 31, 2021 |
|
|
6,453 |
|
|
|
2.26 |
|
|
Summary of Stock Options Currently Outstanding and Exercisable |
Exercise price
$ |
|
|
Number
Outstanding at
March 31, 2021
(in thousands) |
|
|
Weighted
average remaining
contractual life
(years) |
|
|
Number
exercisable at
March 31, 2021
(in thousands) |
|
|
0.61 |
|
|
|
941 |
|
|
|
8.43 |
|
|
|
836 |
|
|
0.74 |
|
|
|
250 |
|
|
|
8.61 |
|
|
|
42 |
|
|
1.36 |
|
|
|
300 |
|
|
|
9.48 |
|
|
|
50 |
|
|
1.70 |
|
|
|
4,699 |
|
|
|
9.46 |
|
|
|
943 |
|
|
6.10 |
|
|
|
30 |
|
|
|
7.60 |
|
|
|
28 |
|
|
7.00 |
|
|
|
3 |
|
|
|
7.23 |
|
|
|
3 |
|
|
8.70 |
|
|
|
12 |
|
|
|
6.59 |
|
|
|
12 |
|
|
9.83 |
|
|
|
83 |
|
|
|
7.14 |
|
|
|
79 |
|
|
10.60 |
|
|
|
4 |
|
|
|
7.03 |
|
|
|
4 |
|
|
11.70 |
|
|
|
30 |
|
|
|
1.91 |
|
|
|
30 |
|
|
15.90 |
|
|
|
3 |
|
|
|
1.17 |
|
|
|
3 |
|
|
20.00 |
|
|
|
9 |
|
|
|
0.83 |
|
|
|
9 |
|
|
21.10 |
|
|
|
14 |
|
|
|
6.27 |
|
|
|
14 |
|
|
29.60 |
|
|
|
5 |
|
|
|
3.84 |
|
|
|
5 |
|
|
37.60 |
|
|
|
5 |
|
|
|
4.86 |
|
|
|
5 |
|
|
41.00 |
|
|
|
4 |
|
|
|
5.61 |
|
|
|
4 |
|
|
42.00 |
|
|
|
33 |
|
|
|
2.37 |
|
|
|
33 |
|
|
44.80 |
|
|
|
3 |
|
|
|
4.86 |
|
|
|
3 |
|
|
49.50 |
|
|
|
13 |
|
|
|
5.88 |
|
|
|
13 |
|
|
53.20 |
|
|
|
8 |
|
|
|
5.10 |
|
|
|
8 |
|
|
61.60 |
|
|
|
1 |
|
|
|
2.00 |
|
|
|
1 |
|
|
92.00 |
|
|
|
3 |
|
|
|
2.17 |
|
|
|
3 |
|
|
|
|
|
|
6,453 |
|
|
|
|
|
|
|
2,128 |
|
|
Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model |
|
|
March 31,
2021 |
|
|
Dividend rate |
|
|
— |
|
% |
Volatility |
|
121% to 153 |
|
% |
Risk-free rate |
|
0.19% to 0.42 |
|
% |
Term – years |
|
0.4 to 5.8 |
|
|
|
Performance stock units [Member] |
|
Class Of Stock [Line Items] |
|
Schedule of Issuance of Series C Preferred Stock |
|
|
Series C Preferred Stock |
|
|
|
Number
of shares |
|
|
$
(in thousands) |
|
Balance – June 30, 2020 |
|
|
— |
|
|
|
— |
|
Issuance |
|
|
25,028 |
|
|
|
18,286 |
|
Issued on exercise of Series C Preferred Agent Warrants |
|
|
31 |
|
|
|
71 |
|
Conversion of Series C Preferred stock to common stock |
|
|
(4,156 |
) |
|
|
(3,106 |
) |
Balance – March 31, 2021 |
|
|
20,903 |
|
|
|
15,251 |
|
|
Schedule of Conversion of Series B Preferred Stock to Common Stock |
|
|
Series B Preferred Stock
(in thousands) |
|
|
|
Number
of shares |
|
|
$ |
|
Balance – June 30, 2020 |
|
|
649 |
|
|
|
4,525 |
|
Conversion of Series B Preferred stock to common
stock |
|
|
(48 |
) |
|
|
(329 |
) |
Balance – March 31, 2021 |
|
|
601 |
|
|
|
4,196 |
|
|