Company: GOOGL
Filing Date: 2025-04-25
Form Type: S-3ASR
Source: 0001193125-25-095696
Chunk: 1

Company: Alphabet Inc.
Filing Date: 2025-04-25
Form: S-3ASR
Chunk 1
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 box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐ If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒ If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-acceleratedfiler, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2of the Exchange Act.

| Large accelerated filer |     | ☒ |     | Accelerated filer         |     | ☐ |
| Non-accelerated filer   |     | ☐ |     | Smaller reporting company |     | ☐ |
|                         |     |   |     | Emerging growth company   |     | ☐ |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

PROSPECTUS

Alphabet Inc.

Debt Securities

Preferred Stock

Class A Common Stock

Class C Capital Stock

Warrants

By this prospectus, Alphabet Inc. (“Alphabet” or “we”) may offer and sell from time to time the securities described in this prospectus
separately or together in any combination. Specific terms, including the public offering price and our net proceeds from the sale(s) thereof, of any securities to be offered will be provided in a supplement to this prospectus. You should read this
prospectus and any supplement, as well as the documents incorporated and deemed to be incorporated by reference in this prospectus and any prospectus supplement, carefully before you invest. A supplement may also add to, update, supplement or
clarify information contained in this prospectus.

Unless stated otherwise in a prospectus supplement, none of these securities will be listed on any
se