Eagle Materials美股招股说明书(2025-11-10版)

$750,000,000 5.000% Senior Notes due 2036 Interest payable March 15 and September 15 Issue price: 98.903% We are offering $750,000,000 aggregate principal amount of our 5.000% Senior Notes due 2036, which we refer to as the “notes.” The notes will mature on March 15,2036. Interest will accrue on the notes from November 13, 2025, and the first interest payment date will be March 15, 2026. We may redeem the notes, in whole or in part, as described under the caption “Description of notes—Optional redemption” in this prospectus supplement. If a change ofcontrol triggering event as described in this prospectus supplement under the caption “Description of notes—Change of control triggering event” occurs, we will berequired to offer to repurchase all of the notes at a purchase price equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to, butexcluding, the date of repurchase. The notes will not be guaranteed. The notes will be our senior unsecured obligations and will rank equally in right of payment with all of our existing and future seniorunsecured debt and senior in right of payment to any future subordinated debt. The notes will be effectively subordinated to any of our future secured debt to the extent ofthe value of the assets securing such debt. In addition, the notes will be structurally subordinated to the existing and future liabilities of our subsidiaries. You should read this prospectus supplement, together with the accompanying prospectus, carefully before you invest in the notes.Investing in the notes involves risks. See “Risk factors” beginning on pageS-9of this prospectus supplement and page7 of theaccompanying prospectus for a discussion of certain risks that you should consider in connection with an investment in the notes. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these notes or determined if thisprospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense. We expect that delivery of the notes will be made to investors in book-entry form through The Depository Trust Company for the accounts of its participants, includingEuroclear Bank SA/NV, as operator of the Euroclear System, and Clearstream Banking, société anonyme, on or about November 13, 2025. Wells Fargo SecuritiesTruistSecurities J.P. MorganPNCCapitalMarketsLLC Table of Contents TABLE OF CONTENTS Prospectus supplement About this prospectus supplementNon-GAAPfinancial measuresCautionary statement regarding forward-looking statementsMarket, ranking and other dataTrademarks, service marks and copyrightsCorporate informationSummaryRisk factorsUse of proceedsCapitalizationDescription of notesBook-entry settlement and clearanceCertain ERISA considerationsMaterial U.S. federal income tax consequencesUnderwriting (conflicts of interest)Legal mattersIndependent registered public accountantsWhere you can find more informationIncorporation of certain documents by reference Prospectus About this prospectusAbout Eagle MaterialsWhere you can find more informationIncorporation of certain documents by referenceCautionary statement regarding forward-looking statementsRisk factorsUse of proceedsDescription of capital stockDescription of debt securitiesDescription of warrantsDescription of unitsDescription of depositary sharesForm of securitiesPlan of distributionLegal matters Experts The notes are being offered for sale only in jurisdictions where it is lawful to make such offers. The distribution of this prospectus supplement and theaccompanying prospectus and the offering of the notes in certain jurisdictions may be restricted by law. Persons outside the United States who receivethis prospectus supplement and the accompanying prospectus should inform themselves about and observe any such restrictions. This prospectussupplement and the accompanying prospectus do not constitute, and may not be used in connection with, an offer or solicitation by anyone in anyjurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not authorized or in which theperson making such offer or solicitation is not qualified to do so or any person to whom it is unlawful to make such offer or solicitation. 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 the notes we are offering and certainother matters relating to us and our financial condition. The second part, the accompanying prospectus, gives more general information about securitieswe may offer from time to time, some of which may not apply to the notes we are offering hereby. You should read this prospectus supplement alongwith the accompanying prospectus, the documents incorporated by reference herein and therein, as well as any related