v3.20.1
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of stock-based compensation expense included in the consolidated statements of operations and comprehensive loss
The following table presents stock-based compensation expense related to stock-based awards, as well as the 2017 Employee Stock Purchase Plan (the “ESPP”), contained within the following line items of the Company’s condensed consolidated statements of operations and comprehensive loss for each of the periods indicated.
 
Three Months Ended
March 31,
 
2020
 
2019
 
(in thousands)
Curriculum and teaching
$
133

 
$
3

Servicing and support
3,928

 
1,669

Technology and content development
3,169

 
1,856

Marketing and sales
3,233

 
1,256

General and administrative
10,407

 
4,800

Total stock-based compensation expense
$
20,870

 
$
9,584


Schedule of stock option activity
The following table presents a summary of the Company’s stock option activity for the period indicated.
 
Number of
Options
 
Weighted-Average
Exercise Price per
Share
Outstanding balance as of December 31, 2019
4,373,895

 
$
34.24

Granted
8,597

 
19.61

Exercised
(37,275
)
 
10.30

Forfeited
(7,252
)
 
66.61

Expired
(27,399
)
 
38.73

Outstanding balance as of March 31, 2020
4,310,566

 
34.34

Exercisable as of March 31, 2020
3,079,102

 
$
21.82

 
*
As of March 31, 2020, the aggregate intrinsic value of options exercisable was $22.7 million and such shares had a weighted-average remaining contractual term of 2.77 years.
Schedule of restricted stock unit activity
The following table presents a summary of the Company’s RSU and PRSU activity for the period indicated.
 
Number of
Units
 
Weighted-
Average Grant
Date Fair Value per Share
Outstanding balance as of December 31, 2019
3,694,915

 
$
35.76

Granted
2,369,093

 
20.42

Vested
(96,683
)
 
52.64

Forfeited
(260,279
)
 
53.31

Outstanding balance as of March 31, 2020
5,707,046

 
$
28.30