Item 1A. Risk Factors

A description of the risk factors associated with our business is contained in the “Risk Factors” section of our Annual Report on Form 10-K for our fiscal year ended December 31, 2020. There have been no material changes to our Risk Factors as previously reported.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities


Period	Total Number of Shares (or Units) Purchased (a)	Average Price Paid per Share (or Unit)		Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (in millions) (b)
July 1, 2021 through July 31, 2021	1,800	$	106.68	—	$	1,222.7
August 1, 2021 through August 31, 2021	—	—		—	1,222.7
September 1, 2021 through September 30, 2021	13,139	121.00		—	1,222.7
Total	14,939	119.27		—

(a) The difference between the total number of shares (or units) purchased and the total number of shares (or units) purchased as part of publicly announced plans or programs is due to shares withheld by us to satisfy tax withholding obligations in connection with the vesting of restricted stock units issued to employees.

(b) On May 8, 2019, the Board of Directors approved a stock repurchase program authorizing us to purchase up to $1.0 billion of our common stock. On May 4, 2021, the Board of Directors approved a new stock repurchase program providing for an additional $1.0 billion of repurchases of our common stock. Repurchases under the programs may be made on the open market, including pursuant to a Rule 10b5-1 plan, and in privately negotiated transactions. These repurchase programs do not have an expiration date.

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