马塞里奇房产美股招股说明书(2026-08-05版)

13,453,613 SharesCommon Stock Underlying OP Units The 13,453,613 shares of our common stock, par value $.01 per share, that we may issue pursuant to this prospectus supplement and the accompanyingprospectus were previously included in (i)a prospectus supplement dated July2, 2010 and an accompanying prospectus to our registration statement onFormS-3 that we filed with the Securities and Exchange Commission (the “SEC”) on November26, 2008 under File No.333-155742 (the “OriginalRegistration Statement”), (ii) in a prospectus supplement dated September9, 2011 and an accompanying prospectus to our registration statement on Form S-3that we filed with the SEC on September9, 2011 under File No.333-176762 (the “Second Registration Statement”), (iii) in a prospectus supplement datedAugust20, 2014 and an accompanying prospectus to our registration statement on Form S-3 that we filed with the SEC on August20, 2014 underFileNo.333-198260 (the “Third Registration Statement”), (iv) in a prospectus supplement dated August10, 2017 and an accompanying prospectus to ourregistration statement on FormS-3 that we filed with the SEC on August10, 2017 under File No.333-219872 (the “Fourth Registration Statement”), (v) in aprospectus supplement dated August5, 2020 and an accompanying prospectus to our registration statement on FormS-3 that we filed with the SEC on August5,2020 under File No.333-240975 (the “Fifth Registration Statement”) and (vi)in a prospectus supplement dated August4, 2023 and an accompanyingprospectus to our registration statement on FormS-3 that we filed with the SEC on August4, 2023 under File No.333-273707 (the “Sixth RegistrationStatement”). The Original Registration Statement filed on November26, 2008 terminated upon the effectiveness on September9, 2011 of the SecondRegistration Statement. The Second Registration Statement terminated upon the effectiveness on August20, 2014 of the Third Registration Statement. The ThirdRegistration Statement terminated upon the effectiveness on August10, 2017 of the Fourth Registration Statement. The Fourth Registration Statementterminated upon the effectiveness on August5, 2020 of the Fifth Registration Statement. The Fifth Registration Statement terminated upon the effectiveness onAugust4, 2023 of the Sixth Registration Statement. The Sixth Registration Statement terminated upon the effectiveness of the registration statement onFormS-3 of which this prospectus supplement is a part. This prospectus supplement is a supplement to the accompanying prospectus and relates to the holders of our common units of limited partnershipinterest, or “OP units,” in The Macerich Partnership, L.P. (the “Operating Partnership”) named herein (the “OP unit holders”). The OP units may be redeemed atthe request of the OP unit holder and we may elect to redeem them for cash or shares of our common stock on a one-for-one basis. Currently, there are nooutstanding redemption requests from the OP unit holders. This prospectus supplement covers the potential offer and sale, from time to time, by the OP unit holders of up to 13,453,613 shares of our common stockthat may be issued to such OP unit holders upon redemption of an equal number of OP units. The OP unit holders may only offer these shares of our commonstock if upon any request for redemption we exercise our right to issue our common stock to them instead of paying a cash amount. The registration of the sharesof our common stock covered by this prospectus supplement satisfies any contractual obligation, but does not necessarily mean that any of the holders of OPunits will exercise their redemption rights or that upon any such redemption we will elect, in our sole and absolute discretion, to redeem some or all of the OPunits for shares of our common stock instead of paying a cash amount. The OP unit holders will act independently in making decisions with respect to the timing, manner and size of any sale or non-sale related transfer. TheOP unit holders may sell these shares in one or more transactions at the market price for our common stock prevailing at the time of sale, a price related to theprevailing market price, a negotiated price or such other price as the OP unit holders determine from time to time. See “Plan of Distribution.” Our commonstock trades on the New York Stock Exchange (the “NYSE”) under the symbol “MAC.” On August4, 2026, the last reported sale price of our common stock onthe NYSE was $25.62 per share. Investing in the common stock involves risks. See “Risk Factors” beginning on page S-3. We will not receive any proceeds from the sale by the OP unit holders of the common stock. We will pay all expenses of the registration of thecommon stock and certain other expenses. Neither the SEC nor any state securities commission has approved or disapproved of these securities or determined if this prospectussupplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offen