Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation (Tables)

v3.21.1
Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Assumptions Used To Estimate Fair Value of Options The assumptions used to estimate fair value and the resulting grant date fair values are as follows:

 

 

 

Employees

 

 

Non-employee Directors

 

 

 

Years Ended December 31,

 

 

Years Ended December 31,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Weighted average expected volatility

 

 

64.67

%

 

 

66.47

%

 

 

66.55

%

 

 

65.36

%

Weighted average risk-free interest rate

 

 

1.18

%

 

 

2.47

%

 

 

0.36

%

 

 

2.11

%

Weighted average expected term (in years)

 

 

5.97

 

 

 

6.03

 

 

 

5.50

 

 

 

5.54

 

Schedule of Share-based Compensation, Stock Options, Activity

The activity for the 2009 Plan, 2014 Plan and 2015 Plan for the years ended December 31, 2020 is summarized as follows:

 

 

Number

of

Shares

 

 

Weighted-

Average

Exercise

Price

 

 

Weighted-

Average

Remaining

Contractual

Life (in years)

 

 

Aggregate

Intrinsic

Value ($000)

 

Outstanding — December 31, 2019

 

 

526,070

 

 

$

30.55

 

 

 

7.62

 

 

$

60

 

Granted

 

 

349,437

 

 

$

8.17

 

 

 

 

 

 

 

 

 

Exercised

 

 

(166

)

 

$

8.60

 

 

 

 

 

 

 

 

 

Forfeited/expired

 

 

(44,998

)

 

$

23.50

 

 

 

 

 

 

 

 

 

Outstanding — December 31, 2020

 

 

830,343

 

 

$

21.52

 

 

 

7.71

 

 

$

96

 

Exercisable — December 31, 2020

 

 

447,802

 

 

$

31.47

 

 

 

6.74

 

 

$

22

 

Vested or expected to vest —December 31, 2020

 

 

830,343

 

 

$

21.52

 

 

 

7.71

 

 

$

96

 

Schedule of Restricted Stock Units ("RSU") Activity

Restricted stock unit ("RSU") activity under the 2014 Plan and 2015 Plan for the years ended December 31, 2020, is summarized as follows:

 

 

Number of

Shares

 

 

Weighted

Average

Grant Date

Fair Value

Per Share

 

Non-vested at December 31, 2019

 

 

96,637

 

 

$

14.18

 

Granted

 

 

28,695

 

 

$

8.18

 

Vested

 

 

(78,859

)

 

$

14.05

 

Forfeited

 

 

(17,386

)

 

$

12.68

 

Non-vested at December 31, 2020

 

 

29,087

 

 

$

9.52

 

 

Stock-Based Compensation Expense Related to Stock Options

Stock-based compensation expense related to stock options is included in the following line items in the accompanying statements of operations (in thousands):

 

 

 

Years Ended December 31,

 

 

 

2020

 

 

2019

 

Research and development

 

$

806

 

 

$

604

 

Selling, general and administrative

 

 

1,414

 

 

 

1,224

 

Total stock-based compensation expense

 

$

2,220

 

 

$

1,828