Item 1A. Risk Factors

There have been no material changes to the risk factors described in Part 1, Item 1A in our Annual Report on Form 10-K for the year ended December 31, 2022. The occurrence of any of the risks described therein could materially affect us, including impacting our business, financial condition, results of operations, stock price or credit rating, as well as our reputation. These risks are not the only ones we face. We could also be materially adversely affected by other events, factors or uncertainties that are unknown to us, or that we do not currently consider to be material.

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

(c) A summary of repurchases of our class A and class B common stock during the third quarter of 2023 is as follows (in millions, except per share amounts):

We repurchased 4.4 and 12.8 million shares of class B common stock for $750 million and $2.3 billion during the three and nine months ended September 30, 2023, respectively. These repurchases were completed as follows:

• In August 2021, the Board of Directors approved a share repurchase authorization of $5.0 billion of class A and class B common stock (the "2021 Authorization"). During the nine months ended September 30, 2023, we repurchased 0.5 million shares of class B common stock for $82 million under this authorization.

• In January 2023, the Board of Directors terminated the 2021 Authorization and approved a new share repurchase authorization of $5.0 billion for class A and class B common stock. During the three and nine months ended September 30, 2023, we repurchased 4.4 and 12.3 million shares of class B common stock for $750 million and $2.2 billion, respectively, under this authorization.

We do not anticipate further share repurchases in 2023.

For additional information on our share repurchase activities, see note 12 to the unaudited, consolidated financial statements.

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