Stockholders' Equity (Tables)
|
6 Months Ended |
Dec. 31, 2020 |
|---|
| Class Of Stock [Line Items] |
|
| Schedule of Stock Option Expense |
|
|
|
Three months ended
December 31,
|
|
|
Six months ended
December 31,
|
|
|
|
|
2020
$
|
|
|
2019
$
|
|
|
2020
$
|
|
|
2019
$
|
|
|
Research and development
|
|
|
572
|
|
|
|
24
|
|
|
|
663
|
|
|
|
32
|
|
|
General and administrative
|
|
|
1,553
|
|
|
|
136
|
|
|
|
1,867
|
|
|
|
179
|
|
|
|
|
|
2,125
|
|
|
|
160
|
|
|
|
2,530
|
|
|
|
211
|
|
|
| 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
|
|
|
(577
|
)
|
|
|
1.09
|
|
|
Forfeited
|
|
|
(14
|
)
|
|
|
1.42
|
|
|
Unvested at December 31, 2020
|
|
|
5,266
|
|
|
|
1.63
|
|
|
| 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)
|
|
|
(1,180
|
)
|
|
|
1.00
|
|
|
Warrants issued for services (ii)
|
|
|
380
|
|
|
|
1.53
|
|
|
Expiry of warrants (iii)
|
|
|
(113
|
)
|
|
|
30.00
|
|
|
Balance – December 31, 2020
|
|
|
11,710
|
|
|
|
2.67
|
|
|
i)
|
A total of 1,179,707 2020 Investor Warrants were exercised at $1.00 per share.
|
|
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 per share.
|
|
| Schedule of Changes in Outstanding Warrants |
|
Description of warrants
|
|
Number
(in thousands)
|
|
|
Exercise
price $
|
|
|
Expiry date
|
|
2020 Investor warrants
|
|
|
6,558
|
|
|
|
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
|
|
|
13
|
|
|
|
30.00
|
|
|
February 1, 2021
|
|
Warrants issued for services
|
|
|
6
|
|
|
|
17.80
|
|
|
January 25, 2023
|
|
Warrants issued for services
|
|
|
34
|
|
|
|
11.70
|
|
|
February 27, 2023
|
|
Warrants issued for services
|
|
|
14
|
|
|
|
9.00
|
|
|
September 15, 2023 and October 11, 2023
|
|
Warrants issued for services
|
|
|
280
|
|
|
|
0.75
|
|
|
November 18, 2023
|
|
Warrants issued for services
|
|
|
250
|
|
|
|
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
|
|
2020 Underwriter Warrants
|
|
|
377
|
|
|
|
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
|
|
|
755
|
|
|
|
3.18
|
|
|
January 17, 2022
|
|
|
|
|
11,710
|
|
|
|
|
|
|
|
|
(i)
|
NBTS Warrants were issued in connection with respect to the NBTS Loan (note 5).
|
|
| 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
|
|
|
1,959
|
|
|
|
1.16
|
|
|
|
1,689
|
|
|
|
1,182
|
|
|
Series 2
|
|
|
219
|
|
|
|
1.21
|
|
|
|
180
|
|
|
|
126
|
|
|
Series 3
|
|
|
326
|
|
|
|
1.15
|
|
|
|
283
|
|
|
|
198
|
|
|
|
|
|
2,504
|
|
|
|
|
|
|
|
2,152
|
|
|
|
1,506
|
|
|
| Schedule of Conversion of Series C Preferred Stock to Series C Warrants |
|
|
|
Number of
Warrants
|
|
|
Conversion
price
$
|
|
|
Balance – June 30, 2020
|
|
|
—
|
|
|
|
|
|
|
Issuance of Preferred Series C-1 Agent Warrants
|
|
|
1,959
|
|
|
|
1.16
|
|
|
Issuance of Preferred Series C-2 Agent Warrants
|
|
|
219
|
|
|
|
1.21
|
|
|
Issuance of Preferred Series C-3 Agent Warrants
|
|
|
326
|
|
|
|
1.15
|
|
|
Balance – December 31, 2020
|
|
|
2,504
|
|
|
|
|
|
|
| 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
|
|
|
(35
|
)
|
|
|
0.61
|
|
|
Expired
|
|
|
(22
|
)
|
|
|
41.44
|
|
|
Forfeited
|
|
|
(14
|
)
|
|
|
1.42
|
|
|
Balance – December 31, 2020
|
|
|
6,487
|
|
|
|
2.26
|
|
|
| Summary of Stock Options Currently Outstanding and Exercisable |
|
Exercise price
$
|
|
|
Number
Outstanding at
December 31, 2020
(in thousands)
|
|
|
Weighted
average remaining
contractual life
(years)
|
|
|
Number
exercisable at
December 31, 2020
(in thousands)
|
|
|
|
0.61
|
|
|
|
975
|
|
|
|
8.68
|
|
|
|
853
|
|
|
|
0.74
|
|
|
|
250
|
|
|
|
8.86
|
|
|
|
—
|
|
|
|
1.36
|
|
|
|
300
|
|
|
|
9.73
|
|
|
|
—
|
|
|
|
1.70
|
|
|
|
4,699
|
|
|
|
9.71
|
|
|
|
120
|
|
|
|
6.10
|
|
|
|
30
|
|
|
|
7.85
|
|
|
|
27
|
|
|
|
7.00
|
|
|
|
3
|
|
|
|
7.48
|
|
|
|
3
|
|
|
|
8.70
|
|
|
|
12
|
|
|
|
6.84
|
|
|
|
12
|
|
|
|
9.83
|
|
|
|
83
|
|
|
|
7.39
|
|
|
|
72
|
|
|
|
10.60
|
|
|
|
4
|
|
|
|
7.28
|
|
|
|
3
|
|
|
|
11.70
|
|
|
|
30
|
|
|
|
2.16
|
|
|
|
30
|
|
|
|
15.70
|
|
|
|
3
|
|
|
|
1.42
|
|
|
|
3
|
|
|
|
20.00
|
|
|
|
9
|
|
|
|
1.08
|
|
|
|
9
|
|
|
|
21.10
|
|
|
|
14
|
|
|
|
6.52
|
|
|
|
14
|
|
|
|
29.60
|
|
|
|
5
|
|
|
|
4.09
|
|
|
|
5
|
|
|
|
37.60
|
|
|
|
5
|
|
|
|
5.11
|
|
|
|
5
|
|
|
|
41.00
|
|
|
|
4
|
|
|
|
5.86
|
|
|
|
4
|
|
|
|
42.00
|
|
|
|
33
|
|
|
|
2.62
|
|
|
|
33
|
|
|
|
44.80
|
|
|
|
3
|
|
|
|
5.11
|
|
|
|
3
|
|
|
|
49.50
|
|
|
|
13
|
|
|
|
6.13
|
|
|
|
13
|
|
|
|
53.20
|
|
|
|
8
|
|
|
|
5.35
|
|
|
|
8
|
|
|
|
61.60
|
|
|
|
1
|
|
|
|
2.25
|
|
|
|
1
|
|
|
|
92.00
|
|
|
|
3
|
|
|
|
2.42
|
|
|
|
3
|
|
|
|
|
|
|
|
6,487
|
|
|
|
|
|
|
|
1,221
|
|
|
| Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model |
|
|
|
December 31,
2020
|
|
|
|
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
|
|
|
Conversion of Series C Preferred stock to common
stock
|
|
|
(1,358
|
)
|
|
|
(988
|
)
|
|
Balance – December 31, 2020
|
|
|
23,670
|
|
|
|
17,298
|
|
|
| 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
|
|
|
(39
|
)
|
|
|
(268
|
)
|
|
Balance – December 31, 2020
|
|
|
610
|
|
|
|
4,257
|
|
|