Number of unvested stock options (in shares)

  
There were 1.0 million NQSOs unvested at December 31, 2021. The remaining unamortized compensation cost related to NQSOs is $9 million, which will be expensed over the weighted average remaining vesting period of the options, or 1.8 years.   
The weighted average remaining contractual term of all outstanding options is 5.6 years and the weighted average remaining contractual term of exercisable options is 4.2 years.  
Information about NQSOs outstanding for the year ended December 31, 2021 were as follows:

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |   |  | Outstanding |  | Exercisable |
|  |  | NumberOutstandingatDecember 31, 2021 |  | WeightedAverageRemainingContractualLife(in years) |  | WeightedAverageExercisePrice |  | NumberExercisableatDecember 31, 2021 |  | WeightedAverageExercisePrice |
| Range of Exercise Prices |  |  |  |  |  |
| (in millions, except per share amounts and life) |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |
| 30.01  |  | - | 40.00 |  | 0.1  |  |  | 1.4 |  | $ | 37.29  |  |  | 0.1  |  |  | $ | 37.29  |  |
| 40.01  |  | - | 50.00 |  | 1.4  |  |  | 5.9 |  | 47.31  |  |  | 0.8  |  |  | 46.73  |  |
| 50.01  |  | - | 60.00 |  | 1.4  |  |  | 6.0 |  | 56.32  |  |  | 0.9  |  |  | 55.05  |  |
| 60.01  |  | - | 70.00 |  | 0.3  |  |  | 4.3 |  | 62.37  |  |  | 0.4  |  |  | 62.24  |  |
|  |  |   |  | 3.2  |  |  |  |  |  |  | 2.2  |  |  |  |

  
The unvested RSU transactions for the year ended December 31, 2021 were as follows:

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|   |  | Unvested Restricted Stock Units |
|   |  | Shares |  | Weighted AverageGrant DateFair Value |
|  |  |  |
| (in millions, except per share amounts) |  |  |
|  |  |  |  |  |
| Unvested at December 31, 2020 |  | 4.2  |  |  | $ | 47.29  |  |
| Granted |  | 1.0  |  |  | 63.61  |  |
|  |  |  |  |  |
| Vested |  | (1.5) |  |  | 45.08  |  |
| Forfeited |  | (0.6) |  |  | 50.01  |  |
| Unvested at December 31, 2021 |  | 3.1  |  |  | $ | 53.52  |  |

  
The unamortized compensation cost related to RSUs is $42 million, which will be expensed over the remaining weighted average restricted period of the RSUs, or 2.0 years.74
