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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2020
Stockholders' Equity  
Schedule of option activity under the 2010 Stock Plan

Shares Subject to

Outstanding Options

Weighted Average

    

Shares

    

Exercise Price

 

Balance at December 31, 2019

 

12,632,657

$

81.42

Options granted

 

2,256,146

$

92.82

Options exercised

 

(2,230,588)

$

52.78

Options cancelled

(542,927)

$

92.66

Balance at December 31, 2020

 

12,115,288

$

88.31

Schedule of stock options outstanding and exercisable by exercise price range

Options Outstanding

Options Exercisable

  

  

Weighted Average

  

Weighted

  

  

Weighted

Remaining

Average

Average

Number

Contractual Life

Exercise

Number

Exercise

Range of Exercise Prices

Outstanding

(in years)

Price

Exercisable

Price

$18.97 - $68.62

 

1,659,221

 

5.97

$

63.57

 

1,106,486

$

61.34

$68.82 - $68.97

 

48,657

 

7.78

 

68.95

 

21,816

 

68.95

$72.27 - $72.27

 

1,714,370

 

7.96

 

72.27

 

597,888

 

72.27

$72.58 - $80.50

 

1,745,853

 

6.34

 

77.24

 

1,041,346

 

75.79

$80.56 - $85.01

 

1,586,213

 

7.21

 

84.35

 

951,572

 

84.15

$85.34 - $95.34

 

1,376,900

 

7.24

 

93.20

 

597,552

 

92.96

$95.54 - $106.47

 

1,985,715

 

6.48

 

101.14

 

926,623

 

96.69

$107.69 - $124.00

1,219,175

5.68

113.55

801,950

113.45

$124.03 - $134.38

753,912

6.13

129.23

664,552

129.35

$138.52 - $138.52

25,272

6.25

138.52

23,157

138.52

 

12,115,288

 

6,732,942

Schedule of activity summarized under all stock plans other than options

Shares Subject to

Outstanding Awards

    

Shares

    

Grant Date Value

 

Balance at December 31, 2019

    

2,602,376

$

79.69

RSUs granted

1,356,377

$

98.11

PSUs granted

92,347

$

106.47

RSUs released

(572,810)

$

86.21

PSUs released

(35,455)

$

78.85

RSUs cancelled

(141,002)

$

86.03

PSUs cancelled

(17,250)

$

68.79

Balance at December 31, 2020

3,284,583

$

87.42

Schedule of share activity

Shares Available

    

for Grant

 

Balance at December 31, 2019

 

9,882,122

Options, RSUs and PSUs granted

 

(5,153,982)

Options, RSUs and PSUs cancelled

787,042

Balance at December 31, 2020

 

5,515,182