Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation

v3.22.1
Stock Based Compensation
3 Months Ended
Mar. 31, 2022
Stock Based Compensation  
Stock-based Compensation

10. Stock Based Compensation

The Company may grant qualified and non-qualified stock options, common stock and other stock-based awards under various plans to directors, officers, employees and other individuals. Stock options are granted at exercise prices of not less than the fair market value of the Company’s common stock on the date of grant. Additionally, the Company has an ESPP that allows employees to purchase Company shares at a purchase price equal to 85% of the lower of the fair market value of the Company’s common stock on the first trading day of the offering period or on the last day of the offering period.

Stock Options

Stock options generally vest monthly over three years for employees and one year for directors. Stock options held by employees who qualify for retirement age (defined as employees that are a minimum of 55 years of age and the sum of their age plus years of full-time employment with the Company exceeds 70 years) vest on the earlier of scheduled vest date or the date of retirement.

The fair value of the stock options granted during the three months ended March 31, 2022 and 2021, was estimated based on the following weighted average assumptions:

Three Months Ended March 31, 

 

    

2022

    

2021

 

Dividend yield

 

0

%  

0

%

Expected volatility

 

70

%  

98

%

Risk-free interest rate

 

1.89

%  

0.71

%

Expected term

 

5.66 years

5.61 years

Stock option activity for the three months ended March 31, 2022, was as follows:

Weighted

    

Weighted

Average

Average

Aggregate

Exercise

Contractual 

Intrinsic

Number of

Price

Term

Value

shares

Per Share

(in years)

(in thousands)

Outstanding at January 1, 2022

1,911,177

$

20.64

 

6.33

$

15,103

Granted

 

160,000

 

20.60

 

  

 

  

Exercised

 

(90,811)

 

6.97

 

  

 

  

Forfeited, expired or cancelled

(6,215)

 

27.83

 

  

 

  

Outstanding at March 31, 2022

1,974,151

$

21.25

 

6.44

$

24,090

Exercisable at March 31, 2022

1,522,824

$

19.70

 

5.60

$

22,139

The aggregate intrinsic value of stock options exercised during the three months ended March 31, 2022 and March 31, 2021 was $2.0 million and $0.6 million, respectively.

The weighted-average grant-date fair value per share of the options granted during the three months ended March 31, 2022 and 2021 was $12.64 and $29.57, respectively.

As of March 31, 2022, $5.1 million of total unrecognized compensation expense related to stock options is expected to be recognized over a weighted average period of 2.5 years.

Stock-based Compensation Expense

The following table shows total stock-based compensation expense for stock options and ESPP in the condensed consolidated statements of operations and comprehensive loss (in thousands):

Three Months Ended March 31, 

    

2022

    

2021

Research and development

$

$

General and administrative

 

978

 

2,898

Total stock-based compensation expense

$

978

$

2,898