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Share-Based Payments (Tables)
 6 Months Ended
Jun. 30, 2017
Share-Based Payments  
Schedule of share-based compensation recognized related to the grant of employee and non-employee stock options, SAR, Employee Stock Purchase Plan (ESPP) awards and non-vested stock

 

Share-based compensation recognized related to the grant of employee and non-employee stock options, SAR, Employee Stock Purchase Plan (ESPP) awards and non-vested stock was as follows, in thousands:

 

 

 

Three Months ended

 

Six Months ended June 30,

 

 

 

2017

 

2016

 

2017

 

2016

 

 

 

(unaudited)

 

(unaudited)

 

Research and development

 

$
398

 

$
340

 

$
715

 

$
628

 

Selling, general and administrative

 
1,862

 
1,272

 
3,372

 
2,343

 

 

 

 

 

 

 

 

 

 

 

Total

 

$
2,260

 

$
1,612

 

$
4,087

 

$
2,971

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of stock option and SAR activity

 

 

 

 

Number of
Options

 

Weighted-
Average
Exercise Price

 

Weighted-
Average
Remaining
Contractual
Term (in years)

 

 

 

 

 

 

 

 

 

Outstanding, December 31, 2016

 
3,644,088

 

$
10.25

 
7.59

 

Granted

 
1,063,255

 

$
25.71

 

 

 

Exercised

 
(152,453

)

$
8.24

 

 

 

Forfeited or expired

 
(45,286

)

$
16.84

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding, June 30, 2017

 
4,509,604

 

$
13.89

 
7.71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

As of December 31, 2016:

 

 

 

 

 

 

 

Vested and expected to vest

 
3,591,528

 

$
10.22

 
7.57

 

Exercisable

 
1,503,004

 

$
8.62

 
6.49

 

 

 

 

 

 

 

 

 

As of June 30, 2017:

 

 

 

 

 

 

 

Vested and expected to vest

 
4,509,604

 

$
13.89

 
7.71

 

Exercisable

 
2,164,607

 

$
9.31

 
6.51