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

The following table summarizes the stock option activity under the 2016 Stock Plan and the 2020 Stock Plan for the year ended December 31, 2020:

 

 

 

Number of

Stock

Options

 

 

Weighted-

Average

Exercise

Price

 

 

Weighted-

Average

Remaining

Term (years)

 

 

Aggregate

Intrinsic

Value

 

Outstanding at December 31, 2019

 

 

5,306,176

 

 

$

4.62

 

 

 

8.99

 

 

$

3,214

 

Granted

 

 

2,898,663

 

 

 

10.90

 

 

 

 

 

 

 

 

 

Exercised

 

 

(297,000

)

 

 

4.09

 

 

 

 

 

 

 

 

 

Cancelled

 

 

(210,781

)

 

 

4.91

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2020

 

 

7,697,058

 

 

$

6.99

 

 

 

8.50

 

 

$

266,050

 

Vested at December 31, 2020

 

 

2,148,119

 

 

$

4.49

 

 

 

7.90

 

 

$

79,625

 

Non-vested at December 31, 2020

 

 

5,548,939

 

 

$

7.96

 

 

 

8.74

 

 

$

186,425

 

Schedule of Estimated Fair Value of Stock Options

The Company estimated the fair value of its stock options using the following assumptions:

 

 

 

Year Ended December 31,

 

 

 

2020

 

 

2019

 

Risk-free interest rate

 

0.4 - 1.8%

 

 

1.5 – 2.5%

 

Expected term (in years)

 

 

6.3

 

 

 

6.3

 

Expected volatility

 

73.5 - 77.6%

 

 

72.8 – 73.47%

 

Expected dividend yield

 

 

0

%

 

 

0

%

 

Schedule of Stock-Based Compensation Expense Included In The Company's Consolidated Statements of Operations And Comprehensive Loss

Stock-based compensation expense included in the Company’s consolidated statements of operations and comprehensive loss is as follows:

 

 

 

Year Ended December 31,

 

 

 

2020

 

 

2019

 

Research and development expenses

 

$

14,691

 

 

$

2,687

 

General and administrative expenses

 

 

17,269

 

 

 

1,769

 

 

 

$

31,960

 

 

$

4,456