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Share-based compensation (Tables)
9 Months Ended
Sep. 30, 2017
Share-based compensation  
Schedule of share-based compensation expense

 

 

 

 

Three months ended September 30,

 

Nine months ended September 30,

 

 

 

2017

 

2016

 

2017

 

2016

 

 

 

(in thousands)

 

Cost of sales

 

$

740

 

$

607

 

$

1,898

 

$

1,639

 

Research and development

 

849

 

993

 

1,986

 

3,032

 

Selling, general, and administrative

 

3,714

 

2,143

 

10,182

 

7,462

 

Restructuring

 

867

 

 

1,707

 

 

Acquisition costs

 

 

 

4,203

 

 

 

 

 

 

 

 

 

 

 

 

Total

 

$

6,170

 

$

3,743

 

$

19,976

 

$

12,133

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of stock option activity

 

 

 

 

Number of

 

Weighted
Average

 

 

 

Shares

 

Exercise Price

 

 

 

(in thousands)

 

 

 

 

Balance - December 31, 2016

 

1,576

 

$

35.18

 

Granted

 

 

 

Exercised

 

(18

)

30.03

 

Expired or forfeited

 

(129

)

37.03

 

 

 

 

 

 

 

Balance - September 30, 2017

 

1,429

 

35.07

 

 

 

 

 

 

 

 

Summary of restricted and performance shares activity

 

 

 

 

 

 

Weighted
Average

 

 

 

Number of

 

Grant Date

 

 

 

Shares

 

Fair Value

 

 

 

(in thousands)

 

 

 

Balance - December 31, 2016

 

1,949

 

$

23.85

 

Granted

 

642

 

29.35

 

Assumed from Ultratech

 

338

 

31.75

 

Vested

 

(695

)

27.12

 

Forfeited

 

(173

)

26.39

 

 

 

 

 

 

 

Balance - September 30, 2017

 

2,061

 

25.85