Common Stock We are offering 19,200,000 shares of our common stock, par value $0.01 per share. We are organized and conduct our operations to qualify as a real estate investment trust (“REIT”) for federal income tax purposes. In part, to assistus in complying with certain federal income tax requirements applicable to REITs, our charter contains certain restrictions relating to the ownership andtransfer of our stock, including an ownership limit of 5.0% on our common stock. See “Description of Our Capital Stock—Restrictions on Transfer andOwnership” in the accompanying prospectus. Our common stock trades on the New York Stock Exchange (the “NYSE”) under the symbol “MAC.” On May8, 2026, the last reported sale priceof our common stock on the NYSE was $21.87 per share. Investing in our common stock involves risks. See “Risk Factors” beginning on pageS-4. Per ShareTotalPublic offering price$21.00$403,200,000Underwriting discount$0.6825$13,104,000Proceeds, before expenses, to use$20.3175$390,096,000 We have granted the underwriters an option to purchase up to an additional 2,880,000 shares from us, at the public offering price, less theunderwriting discount, for 30 days after the date of this prospectus supplement. Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of thesesecurities or passed on the adequacy or accuracy of this prospectus supplement or the accompanying prospectus. Any representation to thecontrary is a criminal offense. The shares of common stock sold in this offering will be ready for delivery on or about May 13, 2026. Joint Bookrunners GoldmanSachs&Co.LLCBMOCapitalMarkets DeutscheBankSecuritiesTDSecurities J.P.Morgan MorganStanley Scotiabank The date of this prospectus supplement is May11, 2026. TABLE OF CONTENTS PROSPECTUS SUPPLEMENT SUMMARYRISK FACTORSIMPORTANT INFORMATION RELATED TO FORWARD-LOOKING STATEMENTSUSE OF PROCEEDSUNDERWRITINGLEGAL MATTERSWHERE YOU CAN FIND MORE INFORMATION AND INCORPORATION BY REFERENCE PROSPECTUS ABOUT THIS PROSPECTUSWHERE YOU CAN FIND MORE INFORMATIONINCORPORATION OF CERTAIN DOCUMENTS BY REFERENCEFORWARD-LOOKING STATEMENTSRISK FACTORSTHE MACERICH COMPANYUSE OF PROCEEDSDESCRIPTION OF OUR CAPITAL STOCKDESCRIPTION OF OUR COMMON STOCK MATERIAL UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS SELLING SECURITYHOLDERS PLAN OF DISTRIBUTION LEGAL MATTERS This document consists of two parts. The first part is this prospectus supplement, which relates to the potential offer and sale, from time to time, ofshares of our common stock and also supplements and updates information contained in the accompanying prospectus and the documents incorporatedby reference into the prospectus. The second part is the accompanying prospectus, which gives more general information, some of which may not applyto any potential sale of shares of our common stock. To the extent there is a conflict between the information contained in this prospectus supplement,on the one hand, and the information contained in the accompanying prospectus or any document incorporated by reference herein that was filed withthe SEC before the date of this prospectus supplement, on the other hand, you should rely on the information in this prospectus supplement. You should rely only on the information contained in or incorporated by reference in this prospectus supplement, the accompanyingprospectus and any free writing prospectus that we have authorized. We have not and the underwriters have not authorized anyone to provideyou with information that is different from that contained or incorporated by reference in this prospectus supplement, the accompanyingprospectus or any such free writing prospectus. The offering of the shares of our common stock may be restricted by law in certain non-U.S.jurisdictions. This prospectus supplement is not an offer to sell nor does it seek an offer to buy any shares of our common stock in anyjurisdiction where the offer or sale is not permitted. SUMMARY This summary only highlights the more detailed information appearing elsewhere in this prospectus supplement or incorporated by referencein this prospectus supplement. It may not contain all of the information that is important to you. You should carefully read this entire prospectussupplement, the accompanying prospectus and the documents incorporated by reference in this prospectus supplement before deciding whether toinvest in shares of our common stock. Unless otherwise stated, or the context otherwise requires, references in this prospectus supplement to the “Company,” “Macerich,” “we,”“us” and “our” refer to The Macerich Company, those entities owned or controlled by The Macerich Company and predecessors of The MacerichCompany. Our Company We are involved in the acquisition, ownership, development, redevelopment, management and leasing of regional and community/powershopping centers located throughout the United States. We are t