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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Restricted Incentive Unit Activity
A summary of the Incentive Unit activity for the six months ended June 30, 2019 is as follows:

 
 
Incentive Units
(In thousands)
 
Number of Incentive Units
 
Grant-date fair value
Outstanding—January 1, 2019
 
3,272

 
$
1.49

Vested
 
(2,845
)
 
0.71

Outstanding—June 30, 2019
 
427

 
$
6.67



A summary of the Incentive Unit activity for the six months ended June 30, 2018 is as follows:
 
 
Incentive Units
(In thousands)
 
Number of Incentive Units
 
Grant-date fair value
Outstanding—January 1, 2018
 
2,813

 
$
0.46

Vested
 

 

Outstanding—June 30, 2018
 
2,813

 
$
0.46

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
 
 
Performance-Based Restricted Stock Units
Expected dividend yield
 
8.1
%
Risk-free interest rate
 
2.3
%
Volatility
 
30.0
%
Brigham LLC used the Black-Scholes option pricing valuation model with the following weighted-average assumptions:
 
 
Incentive Units
 
 
2018 Awards
 
2015 Awards
 
2013 Awards
Expected volatility
 
28
%
 
33
%
 
40
%
Expected dividend yield
 

 

 

Expected term (in years)
 
0.7

 
3.7

 
6.2

Risk-free interest rates
 
2.45
%
 
1.07
%
 
0.94
%
Weighted-average grant date fair value per Incentive Unit
 
$
7.75

 
$
0.03

 
$
1.51

Schedule of Share-Based Compensation Expense
Share-based compensation cost recorded for each type of share-based compensation award is presented in the table below.
(In thousands)
 
Share-Based Compensation Expense
Incentive Units (1) (3)
 
$
2,167

RSAs (2) (3)
 
3,456

RSUs (3)
 
1,246

PSUs (4)
 
636

Capitalized share-based compensation (5)
 
(1,010
)
Total share-based compensation expense
 
$
6,495

(1)
Includes $2.0 million recorded at IPO. No compensation expense was recorded prior to the IPO because the IPO was not considered probable.
(2)
Includes $3.2 million recorded at grant date, associated with 152,742 RSAs, which vested immediately.
(3)
Share-based compensation expense relating to Incentive Units, restricted stock awards and time-based restricted stock units with ratable vesting is recognized on a straight-line basis over the requisite service period for the entire award.
(4)
Share-based compensation expense relating to performance-based restricted stock units with cliff-vesting is recognized on a straight-line basis over the requisite service period for the entire award.
(5)
During the three and six months ended June 30, 2019, Brigham Minerals capitalized $1.0 million of the share-based compensation to unevaluated property on its balance sheet.

The following table reflects the future share-based compensation cost to be recorded for the share-based compensation awards that were outstanding at June 30, 2019:

(In thousands)
 
Incentive Units
 
Restricted Stock Awards
 
Time-Based Restricted Stock Units
 
Performance-Based Restricted Stock Units
 
Total
2019
 
$
420

 
$
569

 
$
3,372

 
$
1,720

 
$
6,081

2020
 
828

 
1,129

 
4,217

 
3,412

 
$
9,586

2021
 
828

 
1,129

 
3,891

 
3,411

 
$
9,259

2022
 
618

 
351

 

 

 
$
969

Total
 
$
2,694

 
$
3,178

 
$
11,480

 
$
8,543

 
$
25,895