Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Payments (Tables)

v3.21.1
Stock-Based Payments (Tables)
3 Months Ended
Mar. 31, 2021
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, 2020 and March 31, 2021 and changes during the three months ended March 31, 2021 is presented below:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aggregate

 

 

 

 

 

 

 

Weighted

 

 

Remaining

 

 

Intrinsic

 

 

 

 

 

 

 

Average

 

 

Contractual

 

 

Value

 

 

 

Shares

 

 

Exercise Price

 

 

Life (in years)

 

 

(in thousands)

 

Outstanding at December 31, 2020

 

 

5,468,605

 

 

$

8.90

 

 

7.2

 

 

$

13,124

 

Granted

 

 

1,059,600

 

 

 

11.34

 

 

 

 

 

 

 

 

 

Exercised

 

 

(20,134

)

 

 

7.77

 

 

 

 

 

 

 

 

 

Cancelled

 

 

(3,670

)

 

 

9.69

 

 

 

 

 

 

 

 

 

Outstanding at March 31, 2021

 

 

6,504,401

 

 

$

9.30

 

 

 

6.8

 

 

$

3,056

 

Exercisable at March 31, 2021

 

 

3,754,472

 

 

$

9.24

 

 

 

5.9

 

 

$

2,628

 

Summary of Status of Restricted Stock Units

A summary of the status of restricted stock units as of December 31, 2020 and March 31, 2021 and changes during the three months ended March 31, 2021 is presented below:

 

 

 

 

 

 

 

Weighted

 

 

 

 

 

 

 

Average Grant

 

 

 

Shares

 

 

Date Fair Value

 

Outstanding at December 31, 2020

 

 

1,734,383

 

 

$

7.40

 

Granted

 

 

570,204

 

 

 

10.80

 

Vested

 

 

(206,762

)

 

 

7.23

 

Forfeited

 

 

(27,675

)

 

 

8.11

 

Outstanding at March 31, 2021

 

 

2,070,150

 

 

$

8.34

 

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 March 31,

 

 

 

 

 

2021

 

 

 

2020

 

 

 

Weighted-average risk-free interest rate

 

 

0.78

%

 

 

 

1.48

%

 

 

Expected dividend yield

 

 

%

 

 

 

%

 

 

Expected option term (in years)

 

 

6.08

 

 

 

 

6.08

 

 

 

Volatility

 

 

82.10

%

 

 

 

77.93

%

 

 

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 March 31,

 

 

 

 

2021

 

 

2020

 

 

Research and development

 

$

1,323

 

 

$

1,049

 

 

General and administrative

 

 

1,607

 

 

 

1,410

 

 

Total stock-based compensation expense

 

$

2,930

 

 

$

2,459