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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2021
Stock-Based Compensation  
Schedule of stock based compensation expense categories in statement of operations

    

Year ended December 31, 

    

2021

2020

2019

Sales and marketing

$

961

$

696

$

164

General and administrative

 

1,542

 

1,030

 

225

Research and development

 

1,158

 

332

 

68

Total stock‑based compensation

$

3,661

$

2,058

$

457

Schedule of stock option activity

Weighted

average

Weighted

remaining

Number of

average exercise

contractual term

    

shares

    

price per share

    

(years)

Outstanding at January 1, 2019

 

489,222

$

5.84

 

  

Granted

 

978,415

 

12.51

 

  

Exercised

 

(2,527)

 

5.93

 

  

Early exercised

 

(471)

 

5.93

 

  

Canceled/forfeited

 

(43,697)

 

8.58

 

  

Outstanding at December 31, 2019

 

1,420,942

 

10.35

 

Granted

 

175,086

 

15.03

 

  

Exercised

 

(27,783)

 

6.29

 

  

Canceled/forfeited

 

(70,037)

 

12.41

 

  

Outstanding at December 31, 2020

1,498,208

10.87

Granted

468,000

14.80

Exercised

(77,154)

7.08

Canceled/forfeited

(182,645)

13.08

Outstanding at December 31, 2021

1,706,409

$

11.88

7.36

Vested and expected to vest at December 31, 2021

 

1,657,511

$

11.83

 

7.31

Exercisable at December 31, 2021

 

917,602

$

10.23

 

6.18

Schedule of activity relating to early exercise of stock options

Number of

    

shares

Unvested balance at January 1, 2019

 

912

Early exercised

 

471

Vested

(628)

Unvested balance at December 31, 2019

 

755

Vested

 

(306)

Forfeited

 

(267)

Unvested balance at December 31, 2020

182

Vested

(153)

Unvested balance at December 31, 2021

 

29

Schedule of weighted average assumptions

Year ended December 31, 

    

2021

 

2020

 

2019

Expected dividend yield

 

Expected volatility

 

63.9

%

59.1

%

55.9

%

Risk‑free interest rate

 

0.99

%

0.87

%

1.82

%

Expected term (in years)

 

6.15

5.98

6.24

Schedule of restricted stock units (RSUs)

The Company’s restricted stock units (“RSUs”) vest based on the terms in each award agreement and generally vest over four years. The following table summarizes restricted stock units for the Plan:

Number of

    

shares

Outstanding at January 1, 2021

Granted

194,232

Vested

(12,000)

Canceled/forfeited

(19,189)

Outstanding at December 31, 2021

163,043