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Equity Incentive Plans (Tables)
9 Months Ended
Sep. 30, 2019
Service Period Stock Options  
Summary of Activity Related to Outstanding Stock Options

The following table includes activity related to outstanding service period stock options during the nine months ended September 30, 2019.

 

Service Period Stock Options

 

Shares

 

 

Weighted Average Exercise Price

 

Outstanding at December 31, 2018

 

 

1,793,981

 

 

$

9.84

 

Granted

 

 

23,536

 

 

 

42.29

 

Exercised

 

 

(417,962

)

 

 

8.40

 

Forfeited

 

 

(1,191

)

 

 

9.64

 

Outstanding at September 30, 2019

 

 

1,398,364

 

 

$

10.82

 

Performance-Vested Stock Options  
Summary of Activity Related to Outstanding Stock Options

The following table includes activity related to outstanding performance-vested stock options during the nine months ended September 30, 2019.

Performance Based Options

 

Shares

 

 

Weighted Average Exercise Price

 

Outstanding at December 31, 2018

 

 

1,275,746

 

 

$

13.62

 

Granted

 

 

9,254

 

 

 

42.29

 

Exercised

 

 

(35,447

)

 

9.98

 

Forfeited

 

 

(39,253

)

 

 

9.05

 

Outstanding at September 30, 2019

 

 

1,210,300

 

 

$

14.09

 

Restricted Stock Units  
Summary of Activity Related to Outstanding Stock Options

The following table includes activity related to outstanding restricted stock units during the nine months ended September 30, 2019.

 

Restricted Stock Units

 

Shares

 

 

Weighted-Average Grant-Date Fair Value Per Unit

 

Outstanding at December 31, 2018

 

 

271,979

 

 

$

19.07

 

Granted

 

 

77,609

 

 

 

41.82

 

Issued upon vesting

 

 

(122,392

)

 

 

17.57

 

Forfeited

 

 

(2,528

)

 

 

27.42

 

Outstanding at September 30, 2019

 

 

224,668

 

 

$

27.65