Share-based compensation

9 Months Ended

Sep. 30, 2017

Note 8 - Share-based compensation

Restricted share awards are issued to employees that are subject to specified restrictions and a risk of forfeiture. The restrictions typically lapse over one to five years and may entitle holders to dividends and voting rights. Other types of share-based compensation include performance share awards, performance share units, and restricted share units (collectively with restricted share awards, “restricted shares”), as well as options to purchase common stock.

Share-based compensation expense was recognized in the following line items in the Consolidated Statements of Operations for the three and nine months ended September 30, 2017 and 2016:

	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

For the nine months ended September 30, 2017, equity activity related to stock options was as follows:

	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

For the nine months ended September 30, 2017, equity activity related to non-vested restricted shares and performance shares was as follows:

			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

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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