Material Event (Form 8-K)

On November 3, 2025, Meta Platforms, Inc. (the "Company") completed an offering of $4,000,000,000 aggregate principal amount of its 4.200% Senior Notes due 2030 (the "2030 Notes"), $4,000,000,000 aggregate principal amount of its 4.600% Senior Notes due 2032 (the "2032 Notes"), $6,500,000,000 aggregate principal amount of its 4.875% Senior Notes due 2035 (the "2035 Notes"), $4,500,000,000 aggregate principal amount of its 5.500% Senior Notes due 2045 (the "2045 Notes"), $6,500,000,000 aggregate principal amount of its 5.625% Senior Notes due 2055 (the "2055 Notes"), and $4,500,000,000 aggregate principal amount of its 5.750% Senior Notes due 2065 (the "2065 Notes" and, together with the 2030 Notes, the 2032 Notes, the 2035 Notes, the 2045 Notes, and the 2055 Notes, the "Notes"). The offering of the Notes was made pursuant to the Company's Registration Statement on Form S-3 (File No. 333-271535), whichRegistration Statement relates to the offer and sale on a delayed basis from time to time of an indeterminate amount of the Company's debt securities. Further information concerning the Notes and related matters is set forth in the Company's Prospectus Supplement dated October 30, 2025, which was filed with the Securities and Exchange Commission on November 3, 2025.

In connection with the issuance of the Notes, the Company entered into an Underwriting Agreement dated as of October 30, 2025 (the "Underwriting Agreement") with Citigroup Global Markets Inc. and Morgan Stanley & Co. LLC, as representatives (the "Representatives") of the several underwriters listed in Schedule II to the Underwriting Agreement. The foregoing description of the Underwriting Agreement is qualified in its entirety by the terms of such agreement, a copy of which is attached hereto as Exhibit 1.1 and is incorporated by reference herein.

The Notes were issued pursuant to an Indenture with U.S. Bank Trust Company, National Association, as trustee, dated as of August 9, 2022 (the "Base Indenture"), as supplemented by the fourth supplemental indenture thereto, dated as of November 3, 2025 (the "Fourth Supplemental Indenture" and, together with the Base Indenture, the "Indenture"). The Fourth Supplemental Indenture is attached hereto as Exhibit 4.1 and is incorporated by reference herein. The Base Indenture was previously incorporated by reference into the Registration Statement pursuant to Exhibit 4.1 to the Company's Current Report on Form 8-K filedon August 9, 2022. The forms of the 2030 Notes, the 2032 Notes, the 2035 Notes, the 2045 Notes, the 2055 Notes, and the 2065 Notes are attached hereto as Exhibits 4.2, 4.3, 4.4, 4.5, 4.6, and 4.7, respectively, and are incorporated by reference herein.

The above description of the Underwriting Agreement, the Indenture and the Notes does not purport to be complete and is qualified in its entirety by reference to the Underwriting Agreement, the Indenture, and the forms of Notes.