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Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Stock Option Activity

The following table summarizes stock option activity for the year ended December 31, 2020:

 

 

 

Shares

 

 

Weighted

Average

Exercise Price

 

 

Weighted

Average

Remaining

Contractual Life

 

Outstanding as of December 31, 2019

 

 

6,340,000

 

 

$

3.92

 

 

 

8.22

 

Granted

 

 

420,500

 

 

 

10.46

 

 

 

 

 

Exercised

 

 

(598,406

)

 

 

3.91

 

 

 

 

 

Forfeited / cancelled

 

 

(544,526

)

 

 

4.48

 

 

 

 

 

Outstanding as of December 31, 2020

 

 

5,617,568

 

 

$

4.35

 

 

 

7.33

 

Vested and exercisable as of December 31, 2019

 

 

2,684,160

 

 

$

3.58

 

 

 

7.41

 

Vested and exercisable as of December 31, 2020

 

 

3,449,606

 

 

$

3.83

 

 

 

6.74

 

Summary of Weighted Average Assumptions Used in Calculation of Fair Value Using Black-Scholes Option Pricing Model

The grant date fair value of stock options granted during the year ended December 31, 2020 was estimated at the time of grant using the Black-Scholes option-pricing model and utilized the following weighted average assumptions:

 

 

 

Year Ended

December 31, 2020

 

Fair value of common stock (per share)

 

$

10.46

 

Expected term (in years)

 

5.9 — 6.3

 

Risk-free interest rate

 

1.7%

 

Expected volatility

 

36.3% — 36.6%

 

Dividend yield

 

—%

 

Summary of Activity for Restricted Stock Units

The following table summarizes activity for restricted stock units (“RSUs”) for the year ended December 31, 2020:   

 

 

 

Shares

 

 

Weighted Average

Grant Date Fair

Value per Share

 

Unvested and outstanding as of December 31, 2019

 

 

408,000

 

 

$

4.01

 

Granted

 

 

2,073,006

 

 

 

12.06

 

Vested

 

 

(237,334

)

 

 

3.86

 

Forfeited / cancelled

 

 

(8,230

)

 

 

11.86

 

Unvested and outstanding as of December 31, 2020

 

 

2,235,442

 

 

$

11.46

 

 

Summary of RSAs Activity

The following table summarizes the activity related to the Company’s RSAs for the year ended December 31, 2020:

 

 

 

Shares

 

Unvested at December 31, 2019

 

 

272,868

 

Vested

 

 

(272,868

)

Unvested at December 31, 2020