Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Tables)

v3.22.0.1
STOCK-BASED COMPENSATION (Tables)
12 Months Ended
Dec. 31, 2021
STOCK-BASED COMPENSATION  
Schedule of stock-based compensation related to all of the entity's share-based payments

Total stock-based compensation expense related to all of our stock-based awards was as follows (in thousands):

Year Ended December 31,

 

2021

    

2020

    

2019

 

Selling, general and administrative

$

7,337

$

5,223

$

6,453

Research and development

1,700

2,072

2,662

Restructuring charges

449

Total stock-based compensation expense

$

9,486

$

7,295

$

9,115

Summary of weighted-average assumptions relating to options granted pursuant to equity incentive plans

Year Ended December 31,

 

    

2021

    

2020

    

2019

 

Risk-free interest rate

1.0

%  

1.2

%  

2.4

%

Expected term (in years)

6.4

6.5

6.5

Dividend yield

0.0

%  

0.0

%  

0.0

%

Expected volatility

70.5

%  

66.1

%  

65.5

%

Schedule of option activity under equity incentive plans

Stock Options

Restricted Stock Units

 

Weighted

Weighted

Weighted Average

 

Shares Available

Number of

Average

Intrinsic Value

Number of

Grant Date

For Grant

Shares

Exercise Price

(in thousands)

Shares

Fair Value

 

Outstanding as of December 31, 2020

 

14,218,190

 

27,260,463

$

3.05

 

$

Authorized for grant

 

825,000

 

Granted

 

(7,231,731)

 

6,997,981

$

3.65

 

233,750

$

3.67

Exercised

 

 

(1,353,426)

$

2.49

 

$

Cancelled and forfeited

 

2,903,853

 

(2,896,353)

$

3.95

 

(7,500)

$

3.68

Outstanding as of December 31, 2021

 

10,715,312

 

30,008,665

$

3.13

$

6,812

 

226,250

$

3.67

Vested and Expected to Vest as of December 31, 2021

28,017,415

$

3.13

$

6,611

Exercisable as of December 31, 2021

19,647,126

3.23

$

4,819

Schedule of stock options by exercise price

Options Outstanding

Options Exercisable

    

    

Weighted-Average

    

    

Number of

Remaining Contractual

Weighted-Average

Number of

Weighted-Average

Exercise Price

Shares

Life (in years)

Exercise Price

Shares

Exercise Price

$1.75 - $2.00

 

4,530,317

 

6.86

$

1.95

 

3,062,689

$

1.95

$2.02 - $2.34

 

6,288,002

 

5.42

$

2.21

 

4,821,308

$

2.18

$2.37 - $2.64

4,256,738

7.63

$

2.45

1,939,507

$

2.45

$2.72 - $3.54

 

5,718,865

 

6.91

$

3.29

 

2,746,933

$

3.04

$3.55 - $3.85

4,209,804

5.83

$

3.66

2,445,879

$

3.65

$3.87 - $7.60

4,260,947

4.60

$

4.81

3,886,818

$

4.84

$8.02 - $8.85

743,992

0.07

$

8.16

743,992

$

8.16

$1.75 - $8.85

 

30,008,665

 

6.04

$

3.13

 

19,647,126

$

3.23

Summary of weighted-average assumptions used to calculate fair value of purchase rights granted under Employee Stock Purchase Plan

Year Ended December 31,

 

    

2021

    

2020

    

2019

 

Risk-free interest rate

*

1.0

%  

2.7

%

Expected term (in years)

*

1.6

1.5

Dividend yield

*

0.0

%  

0.0

%

Expected volatility

*

62.3

%  

62.6

%