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Share-Based Payments (Tables)
9 Months Ended
Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of share-based compensation expense

Three Months Ended September 30, 

Nine Months Ended September 30, 

    

2021

    

2020

X

2021

    

2020

 

(In thousands)

Time-Based LTIP Units

$

3,999

$

3,364

$

12,494

$

11,003

Performance-Based LTIP Units

 

3,216

 

3,999

 

9,615

 

14,207

LTIP Units

 

 

 

1,091

 

1,100

Other equity awards (1)

 

1,473

 

1,690

 

4,395

 

4,829

Share-based compensation expense - other

 

8,688

 

9,053

 

27,595

 

31,139

Formation Awards

 

476

 

875

 

1,923

 

3,473

OP Units (2)

 

1,610

 

4,780

 

6,508

 

17,398

LTIP Units (2)

 

66

 

95

 

217

 

310

Special Performance-Based LTIP Units (3)

 

629

 

657

 

2,014

 

2,015

Special Time-Based LTIP Units (3)

 

699

 

726

 

2,204

 

2,236

Share-based compensation related to Formation Transaction and special equity awards (4)

 

3,480

 

7,133

 

12,866

 

25,432

Total share-based compensation expense

 

12,168

 

16,186

 

40,461

 

56,571

Less: amount capitalized

 

(740)

 

(1,177)

 

(2,141)

 

(3,388)

Share-based compensation expense

$

11,428

$

15,009

$

38,320

$

53,183

(1)Primarily comprising compensation expense for: (i) fully vested LTIP Units issued to certain employees in lieu of all or a portion of any cash bonus earned, (ii) RSUs and (iii) shares issued under our ESPP.
(2)Represents share-based compensation expense for LTIP Units and OP Units issued in the Formation Transaction, which are subject to post-Combination employment obligations.
(3)Represents equity awards issued related to our successful pursuit of Amazon's additional headquarters in National Landing.
(4)Included in "General and administrative expense: Share-based compensation related to Formation Transaction and special equity awards" in the accompanying statements of operations.
Time-Based LTIP Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of of the significant assumptions of awards

Expected volatility

   

34.0% to 39.0%

Risk-free interest rate

 

0.1% to 0.4%

Post-grant restriction periods

 

2 to 3 years

Performance-Based LTIP Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of of the significant assumptions of awards

Expected volatility

   

31.0% - 34.0%

Dividend yield

 

2.6%

Risk-free interest rate

 

0.2% - 1.0%

ESPP  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of of the significant assumptions of awards

Expected volatility

   

39.0%

Dividend yield

 

1.5%

Risk-free interest rate

 

0.1%

Expected life

6 months