11. Share-Based Compensation

Share-based compensation and the related tax benefit recognized in our condensed consolidated statements of income were as follows (in millions):

	Three Months Ended
	September 30,
	2015		2014
Cost of revenue	$	0.4	$	0.3
Research and development		6.5		5.4
Selling, general, and administrative		5.0		3.8
Total	$	11.9	$	9.5
Income tax benefit on share-based compensation	$	2.9	$	2.7

Historically, we have issued new shares in connection with our share-based compensation plans, however, treasury shares were also available for issuance as of September 30, 2015. Any additional shares repurchased under our common stock repurchase program would be available for issuance under our share-based compensation plans.

Stock Options

Stock option activity, including stock options granted, exercised, and forfeited, weighted average exercise prices for stock options outstanding and exercisable, and the aggregate intrinsic value were as follows:

	Stock			Weighted		Aggregate
	Option			Average		Intrinsic
	Awards			Exercise		Value
	Outstanding			Price		(in millions)
Balance as of June 30, 2015		2,870,425		$	38.50
Granted		114,120			79.51
Exercised		(112,492	)		29.96
Forfeited		(1,928	)		82.07
Balance as of September 30, 2015		2,870,125			40.43	$	80.7
Exercisable at September 30, 2015		2,064,619			29.87	$	75.4

The aggregate intrinsic value was determined using the closing price of our common stock on September 25, 2015 of $66.04 and excludes the impact of stock options that were not in-the-money.

Deferred Stock Units

DSU activity, including DSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of DSUs was as follows:

				Aggregate
				Intrinsic
	DSU Awards			Value
	Outstanding			(in millions)
Balance as of June 30, 2015		860,376
Granted		43,683
Delivered		(139,355	)
Forfeited		(10,856	)
Balance as of September 30, 2015		753,848		$	49.8

The aggregate intrinsic value was determined using the closing price of our common stock on September 25, 2015 of $66.04.

Of the shares delivered, 40,318 shares valued at $3.2 million were withheld to meet statutory minimum tax withholding requirements.

Market Stock Units

Our Amended and Restated 2010 Incentive Compensation Plan provides for the grant of MSU awards to our employees, consultants, and directors. An MSU is a promise to deliver shares of our common stock at a future date based on the achievement of market-based performance requirements in accordance with the terms of the MSU grant agreement.

We have granted MSUs to our executive officers, which are designed to vest in three tranches with the target quantity for each tranche equal to one-third of the total MSU grant. The first tranche vests based on a one-year performance period; the second tranche vests based on a two-year performance period; and the third tranche vests based on a three-year performance period. Performance is measured based on the achievement of a specified level of total stockholder return, or TSR, relative to the TSR of the Philadelphia Semiconductor Index, or SOX Index. The potential payout ranges from 0% to 200% of the grant target quantity and is adjusted on a two-to-one ratio based on our TSR performance relative to the SOX Index TSR performance using the following formula:

(100% + ([Synaptics TSR—SOX Index TSR] x 2))

Beginning with the MSU grants in fiscal 2015, the payout for tranche one and two will not exceed 100% and the payout for tranche three will be calculated based on the total target quantity for the entire grant multiplied by the payout factor, which will then be reduced by tranche one and tranche two stock issuances.

Delivery of shares earned, if any, will take place on the dates provided in the applicable MSU grant agreement, assuming the grantee is still an employee, consultant, or director of our company at the end of the applicable performance period. On the delivery date, we withhold shares to cover statutory minimum tax withholding requirements and deliver a net quantity of shares to the employee, consultant, or director after such withholding. Until delivery of shares, the grantee has no rights as a stockholder with respect to any shares underlying the MSU award.

During the three months ended September 30, 2015, there was no MSU activity. The balance of outstanding MSUs was 132,376 with an aggregate intrinsic value of $8.7 million. The aggregate intrinsic value was determined using the closing price of our common stock on September 25, 2015 of $66.04.

We value the MSUs using the Monte Carlo simulation model on the date of grant and amortize the compensation expense over the three-year performance and service period on a straight-line basis. The unrecognized share-based compensation cost of our outstanding MSUs was approximately $4.8 million as of September 30, 2015, which will be recognized over a weighted average period of approximately 0.69 years.