Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Payments (Tables)

v3.20.2
Stock-Based Payments (Tables)
9 Months Ended
Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Status of Stock Options

A summary of the status of stock options as of December 31, 2019 and September 30, 2020 and changes during the nine months ended September 30, 2020 is presented below:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aggregate

 

 

 

 

 

 

 

Weighted

 

 

Remaining

 

 

Intrinsic

 

 

 

 

 

 

 

Average

 

 

Contractual

 

 

Value

 

 

 

Shares

 

 

Exercise Price

 

 

Life (in years)

 

 

(in thousands)

 

Outstanding at December 31, 2019

 

 

4,618,421

 

 

$

9.16

 

 

7.5

 

 

$

2,525

 

Granted

 

 

1,190,050

 

 

 

7.84

 

 

 

 

 

 

 

 

 

Exercised

 

 

(95,647

)

 

 

5.32

 

 

 

 

 

 

 

 

 

Cancelled

 

 

(163,534

)

 

 

10.88

 

 

 

 

 

 

 

 

 

Outstanding at September 30, 2020

 

 

5,549,290

 

 

$

8.89

 

 

 

7.3

 

 

$

6,624

 

Exercisable at September 30, 2020

 

 

3,061,426

 

 

$

9.30

 

 

 

6.4

 

 

$

3,936

 

Summary of Status of Restricted Stock Units

A summary of the status of restricted stock units as of December 31, 2019 and September 30, 2020 and changes during the nine months ended September 30, 2020 is presented below:

 

 

 

 

 

 

 

Weighted

 

 

 

 

 

 

 

Average Grant

 

 

 

Shares

 

 

Date Fair Value

 

Outstanding at December 31, 2019

 

 

1,116,358

 

 

$

6.75

 

Granted

 

 

816,300

 

 

 

8.05

 

Vested

 

 

(105,912

)

 

 

6.88

 

Forfeited

 

 

(132,113

)

 

 

7.25

 

Outstanding at September 30, 2020

 

 

1,694,633

 

 

$

7.33

 

Schedule of Weighted-Average Assumptions used in Black-Scholes Option-Pricing Model

The fair value of each stock option granted was estimated on the date of grant using the Black-Scholes option-pricing model based on the following weighted-average assumptions:

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Weighted-average risk-free interest rate

 

 

0.46

 

%

 

1.88

 

%

 

1.29

%

 

 

2.46

%

Expected dividend yield

 

 

 

%

 

 

%

 

%

 

 

%

Expected option term (in years)

 

 

5.89

 

 

 

6.08

 

 

 

5.99

 

 

 

6.02

 

Volatility

 

 

79.96

 

%

 

89.91

 

%

 

78.26

%

 

 

91.49

%

Summary of Stock-based Compensation Expense for Stock Options and Restricted Stock Units

The following table summarizes the stock-based compensation expense for stock options and restricted stock units granted to employees and non-employees recorded in the Company’s condensed consolidated statements of operations:

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

 

Research and development

 

$

1,229

 

 

$

874

 

 

$

3,459

 

 

$

2,490

 

 

General and administrative

 

 

1,494

 

 

 

1,515

 

 

 

4,450

 

 

 

4,133

 

 

Total stock-based compensation expense

 

$

2,723

 

 

$

2,389

 

 

$

7,909

 

 

$

6,623