QuickLinks -- Click here to rapidly navigate through this document

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549


FORM 8-K


CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) May 31, 2002
(
May 31, 2002)

THE MACERICH COMPANY
(Exact Name of Registrant as Specified in Charter)

Maryland   1-12504   95-4448705
(State or Other Jurisdiction of Incorporation)   (Commission File Number)   (IRS Employer Identification No.)

401 Wilshire Boulevard, Suite 700, Santa Monica, CA 90401
(Address of Principal Executive Offices)

Registrant's telephone number, including area code (310) 394-6000

N/A
(Former Name or Former Address, if Changed Since Last Report)




Item 9. Regulation FD Disclosure

        The Company issued a press release on May 31, 2002, announcing the execution of a definitive agreement pursuant to which The Macerich Partnership, L.P., a majority owned subsidiary, will acquire Westcor Realty Limited Partnership and such press release is filed as Exhibit 99.1 hereto and is hereby incorporated by reference in its entirety.

2



Item 7. Financial Statements, Pro Forma Financial Information and Exhibits

3



SIGNATURES

        Pursuant to the requirements of the Securities and Exchange Act of 1934, The Macerich Company has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized, in the City of Santa Monica, State of California, on May 31, 2002.

    THE MACERICH COMPANY

 

 

By:

 

/s/  
THOMAS O'HERN      
Thomas O'Hern
Executive Vice President and
Chief Financial Officer

4




QuickLinks

FORM 8-K
Item 7. Financial Statements, Pro Forma Financial Information and Exhibits
SIGNATURES