Company: GOOGL
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0001193125-25-261740
Chunk: 1

Company: Alphabet Inc.
Filing Date: 2025-11-03
Form: 424B5
Chunk 1
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 who wish to trade notes on any day prior to the business date before delivery will be required, by virtue of the fact that the notes initially settle in T+3, to specify an alternate settlement arrangement at the time of any such trade to prevent a failed settlement and should consult their own advisors. See “Underwriting.” Joint Global Coordinators and Joint Book-Running Managers

| Goldman Sachs & Co. LLC |     | HSBC |     | J.P. Morgan |

Joint Book-Running Managers

| BofA Securities |     | Citigroup |     | Morgan Stanley |     | Wells Fargo Securities |

The date of this prospectus supplement is , 2025.

We are responsible for the information contained and incorporated by reference in this prospectus supplement, the accompanying prospectus and in any related free writing prospectus we prepare or authorize. No person is authorized to give any information or to make any representation that is different from, or in addition to, those contained or incorporated by reference into this prospectus supplement, the accompanying prospectus or any related free writing prospectus that we prepare or authorize. If given or made, such information or representations must not be relied upon as having been authorized by us, and we take no responsibility for any information that others may give you. If you are in a jurisdiction where offers to sell, or solicitations of offers to purchase, the notes offered by this document are unlawful, or if you are a person to whom it is unlawful to direct these types of activities, then the offer presented in this document does not extend to you. The information contained in this document speaks only as of the date of this document, unless the information specifically indicates that another date applies. You should not assume that the information contained in or incorporated by reference in this prospectus supplement, the accompanying prospectus or in any such free writing prospectus is accurate as of any date other than the date of the document containing the information. This prospectus supplement, the accompanying prospectus and any free writing prospectus prepared by us and the underwriters do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the securities described in this prospectus supplement or an offer to sell or the solicitation of an offer to buy such securities in any circumstances in which such offer or solicitation is unlawful. See the “Underwriting” section beginning on page S-26of this prospectus supplement. TABLE OF CONTENTS Prospectus Supplement

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