$192,803,000 Exxon Mobil Corporation Floating Rate Notes due 2075 TheFloating Rate Notes due 2075 (the “Notes”) are an issue of the debt securities described in the accompanying prospectus. Interest on the Notes is payable quarterly in arrears on March28, June28, September28 and December28 of each year, commencing on June28, 2025, at a rateequal to Compounded SOFR (as defined herein) minus 0.450% per year, subject to the provisions set forth under “Description of Notes—Interest on the Notes.” The Notes mature on March28, 2075. We may, at our option, redeem any or all of the Notes at any time on or after March28, 2055 at the redemption prices set forth under “Description of Notes—Optional redemption of the Notes,” plus any accrued and unpaid interest thereon to but excluding the redemption date. The holders of the Notes may require us to repaysome or all of the Notes beginning on March28, 2026, on every March28 and September28 thereafter through and including March28, 2036 and thereafter on If there is a “tax event” (as defined herein), we have the right to shorten the maturity of the Notes to the extent required so that the interest we pay on the Noteswill be deductible for U.S. federal income tax purposes. On the new maturity date, we will pay holders of the Notes 100.000% of the principal amount of the Notes, plus Investing in the Notes involves certain risks. See “Risk Factors” on pageS-7. The Notes will be our general unsecured obligations and will rank equally in right of payment with all of our other existing and future unsecured andunsubordinated debt from time to time outstanding. Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities, ordetermined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense. The Notes will not be listed on any securities exchange. Currently, there is no public market for the Notes. We have been advised by certain of the underwritersthat they currently intend to make a market in the Notes. However, they are not obligated to do so and they may discontinue market making activities at any time withoutnotice. The availability and liquidity of a trading market for the Notes may also be affected to the extent purchasers treat the Notes as “qualified replacement property.” We expect that delivery of the Notes will be made to investors in book-entry form through the facilities of The Depository Trust Company (“DTC”) and itsparticipants on or about April1, 2025, which is the second business day following the date of this prospectus supplement. See “Underwriting.” MorganStanley J.P.Morgan Table of Contents We have not, and the underwriters have not, authorized anyone to provide any information other than that contained in this prospectus supplementor the accompanying prospectus or incorporated by reference in this prospectus supplement and the accompanying prospectus or in any free writingprospectus prepared by or on behalf of us or to which we have referred you. We and the underwriters take no responsibility for, and can provide no The terms “ExxonMobil,” the “Company,” “we,” “us” and “our” refer to Exxon Mobil Corporation and its subsidiaries, unless otherwise stated orthe context otherwise requires. However, in the “Description of Notes” section of this prospectus supplement and the “Description of Debt Securities” About this Prospectus SupplementInformation Concerning Forward-Looking StatementsSummaryRisk FactorsUse of ProceedsDescription of NotesUnderwritingValidity of the NotesExperts Prospectus Page112 About this ProspectusExxon Mobil CorporationRisk FactorsUse of ProceedsDescription of Debt SecuritiesForms of Debt SecuritiesPlan of DistributionWhere You Can Find More InformationInformation Concerning Forward-Looking StatementsValidity of the Debt SecuritiesExperts Table of Contents ABOUT THIS PROSPECTUS SUPPLEMENT This document has two parts. The first part consists of this prospectus supplement, which describes the specific terms of this offering and theNotes offered. The second part, the accompanying prospectus, provides more general information, some of which may not apply to this offering. Thisprospectus supplement and the accompanying prospectus also incorporate by reference certain documents that are described under “Where You Can Before purchasing any Notes, you should carefully read both this prospectus supplement and the accompanying prospectus, together with theadditional information described under the heading “Where You Can Find More Information and Incorporation by Reference” in this prospectus Table of Contents INFORMATION CONCERNING FORWARD-LOOKING STATEMENTS Statements related to future events; projections; descriptions of strategic, operating, and financial plans and objectives; statements of futureambitions and plans; and other statements of future events