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Stockholders' Equity and Equity Compensation Plans (Tables)
 9 Months Ended
Sep. 30, 2023
Stockholders' Equity Note [Abstract]  
Summary of Unvested Restricted Common Stock Activity A summary of our unvested restricted common stock activity during the quarter and nine months ended September 30, 2023 is as follows (shares in thousands):

 

 

 

Quarter Ended

 

 

Nine Months Ended

 

 

 

 

September 30, 2023

 

 

September 30, 2023

 

 

 

 

Shares

 

 

Weighted-
Average
Grant
Date Fair Value

 

 

Shares

 

 

Weighted-
Average
Grant
Date Fair Value

 

 

Unvested awards, beginning

 

 

1,334

 

 

$

53.44

 

 

 

1,147

 

 

$

53.34

 

 

Awards granted

 

 

13

 

 

 

53.29

 

 

 

701

 

 

 

51.69

 

 

Awards forfeited/cancelled

 

 

(69

)

 

 

53.07

 

 

 

(99

)

 

 

53.30

 

 

Awards vested

 

 

(9

)

 

 

53.17

 

 

 

(480

)

 

 

50.30

 

 

Unvested awards, ending

 

 

1,269

 

 

$

53.46

 

 

 

1,269

 

 

$

53.46