Common Stock, Preferred Stock and Equity Plans (Tables)

12 Months Ended

Dec. 31, 2015

The following table contains information about the Company’s equity plans:



			As of December 31, 2015
Title of Plan	Group Eligible	Type of Award Granted	Awards Outstanding	Additional Awards Authorized for Grant
2013 Stock and Option Plan	Employees, Non-employee Directors and Consultants	NSO, RS and RSU	5,851,040	14,124,989
2006 Stock and Option Plan	Employees, Non-employee Directors and Consultants	NSO, RS and RSU	8,274,211	—
1996 Stock and Option Plan	Employees, Non-employee Directors, Advisors and Consultants	NSO	43,664	—
		Total	14,168,915	14,124,989

The following table summarizes information related to the outstanding and exercisable options during the year ended December 31, 2015:



	Stock Options		Weighted-average Exercise Price		Weighted-average Remaining Contractual Life	Aggregate Intrinsic Value
	(in thousands)		(per share)		(in years)	(in thousands)
Outstanding at December 31, 2014	12,003		$	56.81
Granted	3,531		$	119.09
Exercised	(3,289	)	$	50.34
Forfeited	(1,100	)	$	81.77
Outstanding at December 31, 2015	11,145		$	75.99	7.15	$	567,531
Exercisable at December 31, 2015	5,541		$	56.85	5.80	$	385,214
Exercisable and Expected to Vest at December 31, 2015	10,461		$	74.11	7.04	$	551,593

The following table summarizes information about stock options outstanding and exercisable at December 31, 2015:



	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number Outstanding	Weighted-average Remaining Contractual Life	Weighted-average Exercise Price		Number Exercisable	Weighted-average Exercise Price
	(in thousands)	(in years)	(per share)		(in thousands)	(per share)
$18.93–$20.00	138	2.10	$	18.93	138	$	18.93
$20.01–$40.00	2,247	3.70	$	34.38	2,155	$	34.24
$40.01–$60.00	2,310	6.61	$	48.09	1,444	$	49.03
$60.01–$80.00	1,434	8.09	$	75.96	557	$	75.15
$80.01–$100.00	1,785	7.99	$	90.28	702	$	87.55
$100.01–$120.00	1,727	9.05	$	109.31	294	$	109.23
$120.01–$134.69	1,504	9.53	$	131.04	251	$	128.90
Total	11,145	7.15	$	75.99	5,541	$	56.85

The following table summarizes the restricted stock and restricted stock units activity of the Company during the year ended December 31, 2015:



	Restricted Stock				Restricted Stock Units
	Number of Units		Weighted-average Grant-date Fair Value		Number of Shares		Weighted-average Grant-date Fair Value
	(in thousands)		(per share)		(in thousands)		(per share)
Unvested at December 31, 2014	2,907		$	78.18	185		$	76.79
Granted	1,407		$	116.63	97		$	118.26
Vested	(1,033	)	$	68.39	(66	)	$	70.24
Cancelled	(450	)	$	91.21	(23	)	$	89.97
Unvested at December 31, 2015	2,831		$	98.80	193		$	98.36

In 2015, the following shares were issued to employees under the ESPP:



	Year Ended December 31, 2015
	(in thousands, except per share amount)
Number of shares	233
Average price paid per share	$	84.50