Company: GOOGL
Filing Date: 2025-04-29
Form Type: 424B5
Source: 0001193125-25-101705
Chunk: 1

Company: Alphabet Inc.
Filing Date: 2025-04-29
Form: 424B5
Chunk 1
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 Nasdaq to begin within 30 days after the original issue date. If such a listing is obtained, we have no obligation to maintain such listing and we may delist any series of the notes at any time. Currently, there is no public market for any series of the notes. The underwriters expect to deliver the notes to investors in book-entry form only through a common depositary of Clearstream Banking, S.A. (“Clearstream”) or Euroclear Bank S.A./N.V. (“Euroclear” and, together with Clearstream, the “clearing systems”), on or about May , 2025, which will be the fourth London business day from the date of pricing of the notes (this settlement cycle is referred to as “T+4”). Under Rule 15c6-1under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), trades in the secondary market are generally required to settle in one business day, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers 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+4, 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

| Barclays |     | Deutsche Bank |

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.