Three Months Ended September 30,

Nine Months Ended September 30,

2021

2020

2021

2020

Class A

Class B

Class A

Class B

Class A

Class B

Class A

Class B

(in thousands, except per share data)

Numerator

Net income

$

8,787

$

7,881

$

5,379

$

14,059

$

35,585

$

34,873

$

9,196

$

28,634

Reallocation of undistributed earnings
as a result of conversion of Class B
to Class A shares

7,881

—

14,059

—

34,873

—

28,634

—

Reallocation of undistributed earnings
to Class B shares

—

243

—

179

—

1,013

—

455

Net income attributable to common
stockholders — diluted

$

16,668

$

8,124

$

19,438

$

14,238

$

70,458

$

35,886

$

37,830

$

29,089

Denominator

Weighted average shares used
to compute earnings per
share — basic

38,383

34,427

19,336

50,536

36,530

35,800

16,903

52,634

Conversion of Class B to Class A
common shares outstanding

34,427

—

50,536

—

35,800

—

52,634

—

Effect of dilutive stock options
and RSUs

2,071

2,409

2,119

3,618

Weighted average number of shares
used to compute earnings
per share — diluted

74,881

36,498

72,281

52,945

74,449

37,919

73,155

56,252

Earnings per share:

Basic

$

0.23

$

0.23

$

0.28

$

0.28

$

0.97

$

0.97

$

0.54

$

0.54

Diluted

$

0.22

$

0.22

$

0.27

$

0.27

$

0.95

$

0.95

$

0.52

$

0.52