Stock-Based Compensation (Tables)
|
9 Months Ended |
Sep. 30, 2021 |
|---|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
| Schedule of Restricted Stock Units Activity |
A summary of the restricted stock unit activity under the 2018 Plan is presented below:
|
|
|
Restricted
Stock Units
|
|
|
Weighted
Average
Grant Date
Fair Value
|
|
|
Outstanding at December 31, 2020
|
|
|
33,548
|
|
|
$
|
21.93
|
|
|
Granted
|
|
|
29,614
|
|
|
$
|
3.99
|
|
|
Vested
|
|
|
(1,845
|
)
|
|
$
|
64.80
|
|
|
Forfeited
|
|
|
(15,485
|
)
|
|
$
|
14.67
|
|
|
Outstanding at September 30, 2021
|
|
|
45,832
|
|
|
$
|
11.06
|
|
|
| Schedule of Stock-based Compensation Expense Recorded in Operating Expenses |
Stock-based compensation expense recorded in operating expenses was as follows (in thousands):
|
|
|
Three Months Ended September 30,
|
|
|
Nine Months Ended September 30,
|
|
|
|
|
2021
|
|
|
2020
|
|
|
2021
|
|
|
2020
|
|
|
Selling, general and administrative
|
|
$
|
78
|
|
|
$
|
757
|
|
|
$
|
1,551
|
|
|
$
|
2,424
|
|
|
Research and development
|
|
|
27
|
|
|
|
115
|
|
|
|
251
|
|
|
|
317
|
|
|
Stock-based compensation in operating expenses
|
|
$
|
105
|
|
|
$
|
872
|
|
|
$
|
1,802
|
|
|
$
|
2,741
|
|
|
| Stock Options [Member] |
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
| Schedule of Options Activity |
A summary of the stock option activity under the 2018 Equity Incentive Plan (the “2018 Plan”) and the 2018 Stock Compensation Plan is presented below:
|
|
|
Stock
Options
|
|
|
Weighted
Average
Exercise
Price
|
|
|
Weighted
Average
Remaining
Life
(in years)
|
|
|
Aggregate
Intrinsic
Value
(in thousands)
|
|
|
Outstanding at December 31, 2020
|
|
|
124,171
|
|
|
$
|
363.31
|
|
|
|
6.42
|
|
|
|
|
|
|
Forfeited
|
|
|
(15,173
|
)
|
|
$
|
87.28
|
|
|
|
|
|
|
|
|
|
|
Outstanding at September 30, 2021
|
|
|
108,998
|
|
|
$
|
401.74
|
|
|
|
4.82
|
|
|
$
|
—
|
|
|
Exercisable at September 30, 2021
|
|
|
95,096
|
|
|
$
|
455.95
|
|
|
|
4.32
|
|
|
$
|
—
|
|
|
Vested and expected to vest at September 30, 2021
|
|
|
108,998
|
|
|
$
|
401.74
|
|
|
|
4.80
|
|
|
$
|
—
|
|
|
| Stock Option Activity Two Thousand Twenty Equity Incentive Plan [Member] |
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
| Schedule of Options Activity |
A summary of the stock option activity under the 2020 Inducement Equity Incentive Plan (the “2020 Plan”) is presented below:
|
|
|
Stock
Options
|
|
|
Weighted
Average
Exercise
Price
|
|
|
Weighted
Average
Remaining
Life
(in years)
|
|
|
Aggregate
Intrinsic
Value
(in thousands)
|
|
|
Outstanding at December 31, 2020
|
|
|
18,000
|
|
|
$
|
25.50
|
|
|
|
9.24
|
|
|
|
|
|
|
Outstanding at September 30, 2021
|
|
|
18,000
|
|
|
$
|
25.50
|
|
|
|
8.50
|
|
|
$
|
—
|
|
|
Exercisable at September 30, 2021
|
|
|
6,750
|
|
|
$
|
25.50
|
|
|
|
8.50
|
|
|
$
|
—
|
|
|
Vested and expected to vest at September 30, 2021
|
|
|
18,000
|
|
|
$
|
25.50
|
|
|
|
8.50
|
|
|
$
|
—
|
|
|
| Two Thousand Eighteen Restricted Stock Plan |
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
| Schedule of Restricted Stock Awards Activity |
A summary of the restricted stock award activity under the 2018 Plan is presented below:
|
|
|
Restricted Stock
Awards
|
|
|
Weighted
Average
Grant Date
Fair Value
|
|
|
Outstanding at December 31, 2020
|
|
|
286,161
|
|
|
$
|
4.77
|
|
|
Granted
|
|
|
103,939
|
|
|
$
|
4.82
|
|
|
Vested
|
|
|
(31,388
|
)
|
|
$
|
6.96
|
|
|
Forfeited
|
|
|
(50,082
|
)
|
|
$
|
5.10
|
|
|
Outstanding at September 30, 2021
|
|
|
308,630
|
|
|
$
|
4.51
|
|
|
| Two Thousand Twenty Restricted Stock Plan |
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
| Schedule of Restricted Stock Awards Activity |
A summary of the restricted stock award activity under the 2020 Plan is presented below:
|
|
|
Restricted Stock
Awards
|
|
|
Weighted
Average
Grant Date
Fair Value
|
|
|
Outstanding at December 31, 2020
|
|
|
4,375
|
|
|
$
|
25.50
|
|
|
Vested
|
|
|
(625
|
)
|
|
$
|
25.50
|
|
|
Outstanding at September 30, 2021
|
|
|
3,750
|
|
|
$
|
25.50
|
|
|