Google - C Class American Depository Share Prospectus (Version as of February 11, 2026)

$20,000,000,000 Alphabet Inc. $2,500,000,000 3.700% Notes due 2029$3,000,000,000 4.100% Notes due 2031$3,000,000,000 4.400% Notes due 2033$4,250,000,000 4.800% Notes due 2036$1,500,000,000 5.500% Notes due 2046$4,000,000,000 5.650% Notes due 2056$1,750,000,000 5.750% Notes due 2066 We are offering $2,500,000,000 aggregate principal amount of our 3.700% notes due 2029 (the “2029 Notes”), $3,000,000,000 aggregate principal amount of our 4.100% notes due 2031 (the“2031 Notes”), $3,000,000,000 aggregate principal amount of our 4.400% notes due 2033 (the “2033 Notes”), $4,250,000,000 aggregate principal amount of our 4.800% notes due 2036 (the“2036 Notes”), $1,500,000,000 aggregate principal amount of our 5.500% notes due 2046 (the “2046 Notes”), $4,000,000,000 aggregate principal amount of our 5.650% notes due 2056 (the“2056 Notes”) and $1,750,000,000 aggregate principal amount of our 5.750% notes due 2066 (the “2066 Notes” and, together with the 2029 Notes, the 2031 Notes, the 2033 Notes, the 2036Notes, the 2046 Notes and the 2056 Notes, the “notes”). The2029 Notes will mature on February 15, 2029, the2031 Notes will mature on February 15, 2031, the2033 Notes will mature on February 15, 2033, the2036 Notes will mature onFebruary 15, 2036, the2046 Notes will mature on February 15, 2046, the 2056 Notes will mature on February15, 2056 and the 2066 Notes will mature on February 15, 2066. Interest on thenotes will accrue from February13, 2026 and be payable on February 15 and August 15 of each year, beginning on August 15, 2026. We may redeem any series of the notes in whole or inpart at any time or from time to time at the redemption prices described under the heading “Description of the Notes—Optional Redemption.” See “Risk Factors” beginning on page S-7 for a discussion of certain risks that should be considered in connection with an investment in the notes. Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of the notes or determined that this prospectussupplement or the accompanying prospectus is accurate or complete. Any representation to the contrary is a criminal offense. The underwriters expect to deliver the notes to investors through the book-entry delivery system of The Depository Trust Company and its direct participants, including Euroclear Bank andClearstream, on or about February 13, 2026, which will be the fourth 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 suchtrade 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 notesinitially 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.” Table of Contents We are responsible for the information contained and incorporated by reference in this prospectus supplement, the accompanying prospectusand in any related free writing prospectus we prepare or authorize. No person is authorized to give any information or to make anyrepresentation that is different from, or in addition to, those contained or incorporated by reference into this prospectus supplement, theaccompanying prospectus or any related free writing prospectus that we prepare or authorize. If given or made, such information orrepresentations must not be relied upon as having been authorized by us, and we take no responsibility for any information that others maygive 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 TABLE OF CONTENTSProspectus Supplement PageS-iiS-iiS-ivS-1S-2S-3 ABOUT THIS PROSPECTUS SUPPLEMENTWHERE YOU CAN FIND MORE INFORMATIONINFORMATION INCORPORATED BY REFERENCEFORWARD-LOOKING STATEMENTSSUMMARYTHE OFFERINGRISK FACTORSUSE OF PROCEEDSDESCRIPTION OF THE NOTESMATERIAL UNITED STATES FEDERAL INCOME TAX CONSIDERATIONSUNDERWRITINGLEGAL MATTERSEXPERTS Prospectus ABOUT THIS PROSPECTUSFORWARD-LOOKING STATEMENTSALPHABET INCRISK FACTORSUSE OF PROCEEDSDESCRIPTION OF DEBT SECURITIES DESCRIPTION OF CAPITAL STOCK WHERE YOU CAN FIND MORE INFORMATION Table of Contents ABOUT THIS PROSPECTUS SUPPLEMENT This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering o