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Loss Per Share
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Loss Per Share
13.
Loss Per Share

Basic and diluted loss per share was calculated as follows:

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

 

 

(In thousands)

 

Net loss

 

$

(267,892

)

 

$

(134,231

)

 

$

(99,533

)

Weighted average shares outstanding, basic
   and diluted

 

 

70,894

 

 

 

55,987

 

 

 

47,247

 

Net loss per share, basic and diluted

 

$

(3.78

)

 

$

(2.40

)

 

$

(2.11

)

The following common stock equivalents were excluded from the calculation of diluted loss per share in 2021, 2020 and 2019 because their inclusion would have been anti-dilutive:

 

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

 

 

(In thousands)

 

Unvested restricted stock

 

 

453

 

 

 

194

 

 

 

72

 

Stock options

 

 

6,305

 

 

 

6,977

 

 

 

5,366

 

 

 

 

6,758

 

 

 

7,171

 

 

 

5,438