Annual report pursuant to Section 13 and 15(d)

Employee Stock Plans (Tables)

v3.20.4
Employee Stock Plans (Tables)
12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Stock Option Activity
A summary of stock option activity is as follows:
Options (in thousands)
Weighted Average Exercise Price
Weighted Average Remaining Contractual Term
Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2017 2,745  $ 89.99  8.2 years $ 269,018 
Granted
851  $ 221.58 
Forfeited or expired
(171) $ 139.99 
Exercised
(784) $ 60.45 
Outstanding at December 31, 2018 2,641  $ 137.88  8.1 years $ 104,348 
Granted
2,043  $ 42.77 
Forfeited or expired
(350) $ 152.17 
Exercised
(53) $ 57.41 
Outstanding at December 31, 2019 4,281  $ 92.31  8.1 years $ 100,494 
Granted
191  $ 204.06 
Forfeited or expired
(83) $ 135.70 
Exercised
(1,496) $ 87.35 
Outstanding at December 31, 2020 2,893  $ 101.00  7.6 years $ 295,378 
Exercisable at December 31, 2020 1,530  $ 109.74  6.9 years $ 141,215 
Weighted-Average Fair Value of Stock Options Grants
The weighted average fair value of stock options granted for 2020, 2019 and 2018 using the Black-Scholes valuation method are as follows:
2020 2019 2018
Weighted average fair value of stock options with an exercise price equal to the market price on the grant date
$ 118.95  $ 23.64  $ 84.55 
Weighted average fair value of stock options with an exercise price greater than the market price on the grant date
—  —  — 
   Total
$ 118.95  $ 23.64  $ 84.55 
Weighted Average Exercise Prices for Stock Options Exercised
Weighted average exercise prices for stock options exercised in 2020 are as follows:
2020
Weighted average exercise price of stock options with an exercise price equal to the market price on the grant date
$ 87.35 
Weighted average exercise price of stock options with an exercise price greater than the market price on the grant date
— 
   Total weighted average exercise price
$ 87.35 
Non-Vested Stock Options
The following table summarizes the status of our non-vested stock options as of December 31, 2020:
Non-vested
Number of Stock Options (in thousands)
Weighted Average Grant Date Fair Value per Option
Non-vested at December 31, 2019 2,614  $ 34.40 
Granted
191  $ 118.95 
Vested
(1,359) $ 34.93 
Forfeited / Cancelled
(83) $ 58.16 
Non-vested at December 31, 2020 1,363  $ 44.25