| Schedule of outstanding warrants |
A summary of outstanding warrants as of September 30, 2019 and December 31, 2018 is presented below:
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|
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September 30, 2019
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|
December 31, 2018
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|
Warrants outstanding, beginning of period
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|
3,436,431
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|
|
|
5,265,432
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|
Assumed as part of Merger
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|
1,044,939
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|
|
|
Granted
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500,951
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1,542,000
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|
Exercised
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|
(51,000
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)
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|
(2,385,317
|
)
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|
Cancelled, forfeited or expired
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|
—
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|
(985,684
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)
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Warrants outstanding, end of period
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|
4,931,321
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|
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|
3,436,431
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|
A summary of outstanding warrants by year issued and exercise price as of September 30, 2019 is presented below:
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Outstanding
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Exercisable
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Year issued and Exercise Price
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|
Number of
Warrants
Issued
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|
Weighted-Average
Remaining
Contractual
Life (Years)
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|
|
Weighted-Average
Exercise
Price
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|
|
Total
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|
Weighted-Average
Exercise
Price
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|
At December 31, 2015
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$
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4.67
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|
115,953
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0.43
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|
|
$
|
4.67
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|
|
|
115,953
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|
|
$
|
4.67
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|
2015 Total
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|
|
115,953
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|
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|
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|
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|
115,953
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|
At December 31, 2016
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$
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4.29
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124,703
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1.78
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$
|
4.29
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124,703
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$
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4.29
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|
$
|
4.48
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|
78,760
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|
1.59
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|
$
|
4.48
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|
78,760
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|
$
|
4.48
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|
$
|
4.76
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1,365,189
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1.61
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|
$
|
4.76
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|
1,365,189
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|
|
$
|
4.76
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|
2016 Total
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1,568,652
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1,568,652
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|
At December 31, 2017
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|
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$
|
10.28
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|
252,802
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|
3.75
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|
$
|
10.28
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|
|
|
252,802
|
|
|
$
|
10.28
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|
|
|
2017 Total
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|
|
|
252,802
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|
|
|
|
|
|
|
|
|
|
|
252,802
|
|
|
|
|
|
|
At December 31, 2018
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|
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$
|
10.76
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|
210,553
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|
3.86
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|
$
|
10.76
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|
210,553
|
|
|
$
|
10.76
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|
|
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$
|
5.87
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|
1,407,188
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4.06
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$
|
5.87
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|
1,407,188
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|
$
|
5.87
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|
2018 Total
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1,617,741
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1,617,741
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|
At September 30, 2019
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|
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$
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6.12
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32,391
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|
4.66
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|
$
|
6.12
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|
32,391
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|
|
$
|
6.12
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$
|
12.00
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|
76,575
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|
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|
3.98
|
|
|
$
|
12.00
|
|
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|
76,575
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|
|
$
|
12.00
|
|
|
|
$
|
14.04
|
|
|
|
174,999
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|
|
|
3.50
|
|
|
$
|
14.04
|
|
|
|
174,999
|
|
|
$
|
14.04
|
|
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|
$
|
31.50
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|
737,975
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|
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|
2.82
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$
|
31.50
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|
737,975
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|
|
$
|
31.50
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|
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|
$
|
36.24
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|
22,333
|
|
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|
2.82
|
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$
|
36.24
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22,333
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|
|
$
|
36.24
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|
|
|
$
|
60.00
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|
666
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|
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|
1.25
|
|
|
$
|
60.00
|
|
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|
666
|
|
|
$
|
60.00
|
|
|
|
$
|
5.87
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|
256,234
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|
|
|
4.08
|
|
|
$
|
5.87
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|
256,234
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|
$
|
5.87
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$
|
7.68
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|
75,000
|
|
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|
4.80
|
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|
$
|
7.68
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75,000
|
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|
$
|
7.68
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|
2019 Total
|
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1,376,173
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1,376,173
|
|
|
|
|
|
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|
Total
|
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|
4,931,321
|
|
|
|
|
|
|
|
|
|
|
|
4,931,321
|
|
|
|
|
|
|
| Schedule of stock option activity |
A summary of outstanding stock options as of September 30, 2019 and December 31, 2018 are presented below.
|
|
|
September 30, 2019
|
|
|
December 31, 2018
|
|
|
|
|
Number of
Options
|
|
|
Weighted‑
Average
Exercise
Price
|
|
|
Number of
Options
|
|
|
Weighted‑
Average
Exercise
Price
|
|
|
Options outstanding, beginning of period
|
|
|
6,642,200
|
|
|
$
|
4.40
|
|
|
|
6,775,200
|
|
|
$
|
4.12
|
|
|
Granted or deemed granted
|
|
|
636,683
|
|
|
$
|
7.09
|
|
|
|
357,000
|
|
|
$
|
11.28
|
|
|
Exercised
|
|
|
(200
|
)
|
|
$
|
5.00
|
|
|
|
(170,000
|
)
|
|
$
|
4.59
|
|
|
Cancelled, forfeited and expired
|
|
|
(33,333
|
)
|
|
$
|
11.30
|
|
|
|
(320,000
|
)
|
|
$
|
6.06
|
|
|
Options outstanding, end of period
|
|
|
7,245,350
|
|
|
$
|
4.68
|
|
|
|
6,642,200
|
|
|
$
|
4.40
|
|
|
Options exercisable, end of period
|
|
|
6,987,464
|
|
|
$
|
4.46
|
|
|
|
5,958,783
|
|
|
$
|
3.87
|
|
|
Options available for future grant
|
|
|
2,167,150
|
|
|
|
|
|
|
|
2,357,800
|
|
|
|
|
|
|