Simon Property Group - 10-K annual report

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

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

For the fiscal year ended December 31, 2006

SIMON PROPERTY GROUP, INC.
(Exact name of registrant as specified in its charter)

225 West Washington Street
Indianapolis, Indiana 46204
(Address of principal executive offices) (ZIP Code)

(317) 636-1600
(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12 (b) of the Act:

Securities registered pursuant to Section 12 (g) of the Act: None

            Indicate by check mark if the Registrant is a well-known seasoned issuer (as defined in Rule 405 of the Securities Act). YES ý    NO o

            Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. YES o    NO ý

            Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES ý    NO o

            Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ý

            Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer.

Large accelerated filer ý                      Accelerated filer o                      Non-accelerated filer o

            Indicate by checkmark whether the Registrant is a shell company (as defined in rule 12-b of the Act). YES o    NO ý

            The aggregate market value of shares of common stock held by non-affiliates of the Registrant was approximately $17,885 million based on the closing sale price on the New York Stock Exchange for such stock on June 30, 2006.

            As of January 31, 2007, Simon Property Group, Inc. had 221,575,842, 8,000 and 4,000 shares of common stock, Class B common stock and Class C common stock outstanding, respectively.

Documents Incorporated By Reference

            Portions of the Registrant's Annual Report to Stockholders are incorporated by reference into Parts I, II and IV; and portions of the Registrant's Proxy Statement in connection with its 2007 Annual Meeting of Stockholders are incorporated by reference in Part III.

Simon Property Group, Inc. and Subsidiaries
Annual Report on Form 10-K
December 31, 2006

TABLE OF CONTENTS

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Part I

Item 1. Business

Background

            Simon Property Group, Inc. ("Simon Property") is a Delaware corporation that operates as a self-administered and self-managed real estate investment trust ("REIT"). Simon Property Group, L.P. (the "Operating Partnership") is a majority-owned partnership subsidiary of Simon Property that owns all of our real estate properties. In this report, the terms "we", "us" and "our" refer to Simon Property, the Operating Partnership and their subsidiaries.

            We are engaged primarily in the ownership, development, and management of retail real estate, primarily regional malls, Premium Outlet® centers and community/lifestyle centers. As of December 31, 2006, we owned or held an interest in 286 income-producing properties in the United States, which consisted of 171 regional malls, 36 Premium Outlet centers, 69 community/lifestyle centers, and 10 other shopping centers or outlet centers in 38 states and Puerto Rico (collectively, the "Properties", and individually, a "Property"). We also own interests in five parcels of land held for future development (together with the Properties, the "Portfolio"). In the United States, we have five new properties currently under development aggregating approximately 3.5 million square feet which will open during 2007 or early 2008. Internationally, we have ownership interests in 53 European shopping centers (in France, Italy and Poland), five Premium Outlet centers in Japan, and one Premium Outlet center in Mexico. We also have begun construction on a Premium Outlet center in which we will hold a 50% interest located in South Korea and, through a joint venture arrangement, we will have a 32.5% interest in five shopping centers (four of which are under construction) in China.

Operating Policies and Strategies

            The following is a discussion of our investment policies, financing policies, conflict of interest policies and policies with respect to certain other activities. One or more of these policies may be amended or rescinded from time to time without a stockholder vote.

Investment Policies

            We conduct our investment activities through the Operating Partnership and its subsidiaries. Our primary business objectives are to increase Funds From Operations ("FFO") per share, operating results and the value of our Properties while maintaining a strong, stable balance sheet consistent with our financing policies. We intend to achieve these objectives by:

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developing new shopping centers which meet our economic criteria;

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renovating and/or expanding our Properties where appropriate;

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acquiring additional shopping centers and portfolios of other retail real estate companies that meet our investment criteria;

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pursuing a leasing strategy that capitalizes on the desirable location of our Properties;

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generating additional revenues through merchandising, marketing and promotional activities;

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adding mixed-use elements to our Portfolio through our asset intensification initiatives, such as multifamily, condominiums, hotel and self-storage elements at selected locations; and

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improving the performance of our Properties by using the economies of scale that result from our size to help control operating costs.

            We cannot assure you that we will achieve our business objectives.

            We develop and acquire properties to generate both current income and long-term appreciation in value. We do not limit the amount or percentage of assets that may be invested in any particular property or type of property or in any geographic area. We may purchase or lease properties for long-term investment or develop, redevelop, and/or sell our Properties, in whole or in part, when circumstances warrant. We participate with other entities in property ownership, through joint ventures or other types of co-ownership. These equity investments may be subject to existing mortgage financing and other indebtedness that have priority over our equity interest.

            While we emphasize equity real estate investments, we may, at our discretion, invest in mortgages and other real estate interests consistent with our qualification as a REIT under the Internal Revenue Code ("Code"). We do not currently intend to invest to a significant extent in mortgages or deeds of trust; however, we hold an interest in one

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Property through a mortgage note which results in us receiving 100% of the economics of the Property. We may invest in participating or convertible mortgages if we conclude that we may benefit from the cash flow or any appreciation in the value of the property.

            We may also invest in securities of other entities engaged in real estate activities or securities of other issuers. However, any of these investments would be subject to the percentage ownership limitations and gross income tests necessary for REIT qualification under the Code. These REIT limitations mean that we cannot make an investment that would cause our real estate assets to be less than 75% of our total assets. In addition, at least 75% of our gross income must be derived directly or indirectly from investments relating to real property or mortgages on real property, including "rents from real property," dividends from other REIT's and, in certain circumstances, interest from certain types of temporary investments. At least 95% of our income must be derived from such real property investments, and from dividends, interest and gains from the sale or dispositions of stock or securities or from other combinations of the foregoing.

            Subject to these REIT limitations, we may invest in the securities of other issuers in connection with acquisitions of indirect interests in real estate. Such an investment would normally be in the form of general or limited partnership or membership interests in special purpose partnerships and limited liability companies that own one or more properties. We may, in the future, acquire all or substantially all of the securities or assets of other REITs, management companies or similar entities where such investments would be consistent with our investment policies.

Financing Policies

            We must comply with the covenant restrictions of the debt agreements of the Operating Partnership that limit our ratio of debt to total market valuation. For example, the Operating Partnership's lines of credit and the indentures for the Operating Partnership's debt securities contain covenants that restrict the total amount of debt of the Operating Partnership to 65%, or 60% in relation to certain debt, of total assets, as defined under the related arrangement, and secured debt to 50% of total assets. In addition, these agreements contain other covenants requiring compliance with financial ratios. Furthermore, the amount of debt that we may incur is limited as a practical matter by our desire to maintain acceptable ratings for our equity securities and the debt securities of the Operating Partnership.

            If our Board of Directors ("Board") determines to seek additional capital, we may raise such capital through additional equity offerings, debt financing, creating joint ventures with existing ownership interests in Properties, retention of cash flows or a combination of these methods. Our ability to retain cash flows is subject to Code provisions requiring REITs to distribute a certain percentage of their taxable income. We must also take into account taxes that would be imposed on undistributed taxable income. If the Board determines to raise additional equity capital, it may, without stockholder approval, issue additional shares of common stock or other capital stock. The Board may issue a number of shares up to the amount of our authorized capital in any manner and on such terms and for such consideration as it deems appropriate. This may include issuing stock in exchange for property. Such securities may be senior to the outstanding classes of common stock. Such securities also may include additional classes of preferred stock, which may be convertible into common stock. Existing stockholders will have no preemptive right to purchase shares in any subsequent offering of our securities. Any such offering could dilute a stockholder's investment in us.

            We anticipate that any additional borrowings would be made through the Operating Partnership or its subsidiaries. We might, however, incur borrowings that would be reloaned to the Operating Partnership. Borrowings may be in the form of bank borrowings, publicly and privately placed debt instruments, or purchase money obligations to the sellers of properties. Any of such indebtedness may be unsecured or may be secured by any or all of our assets, the Operating Partnership or any existing or new property-owning partnership. Any such indebtedness may also have full or limited recourse to all or any portion of the assets of any of the foregoing. Although we may borrow to fund the payment of dividends, we currently have no expectation that we will regularly be required to do so.

            We may obtain unsecured or secured lines of credit. We also may determine to issue debt securities. Any such debt securities may be convertible into capital stock or be accompanied by warrants to purchase capital stock. We also may sell or securitize our lease receivables. The proceeds from any borrowings or financings may be used for the following:

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financing acquisitions;

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developing or redeveloping properties;

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refinancing existing indebtedness;

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working capital or capital improvements; or

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meeting the income distribution requirements applicable to REITs, if we have income without the receipt of cash sufficient to enable us to meet such distribution requirements.

            We also may determine to finance acquisitions through the following:

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issuance of shares of common stock;

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issuance of shares of preferred stock;

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issuance of additional units of limited partnership interest in the Operating Partnership;

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issuance of preferred units of the Operating Partnership;

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issuance of other securities; or

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sale or exchange of ownership interests in Properties.

            The ability to offer units of limited partnership interest to transferors may result in beneficial tax treatment for the transferors. This is because the exchange of units for properties may defer gain recognition for tax purposes by the transferor. It may also be advantageous for us since certain investors may be limited in the number of shares of our capital stock that they may purchase.

            If the Board determines to obtain additional debt financing, we intend to do so generally through mortgages on Properties, borrowings under our revolving lines of credit or term loan facilities, or the issuance of unsecured debt through the Operating Partnership. We may do this directly or through an entity owned or controlled by us. The mortgages may be non-recourse, recourse, or cross-collateralized. We do not have a policy limiting the number or amount of mortgages that may be placed on any particular property. Mortgage financing instruments, however, usually limit additional indebtedness on such properties.

            Typically, we invest in or form special purpose entities only to obtain permanent financing for Properties on attractive terms. Permanent financing for Properties is typically structured as a mortgage loan on one or a group of Properties in favor of an institutional third party, as a joint venture with a third party, or as a securitized financing. For securitized financings, we are required to create special purpose entities to own the Properties. These special purpose entities are structured so that they would not be consolidated with us in the event we would ever become subject to a bankruptcy proceeding. We decide upon the structure of the financing based upon the best terms then available to us and whether the proposed financing is consistent with our other business objectives. For accounting purposes, we include the outstanding securitized debt of special purpose entities owning consolidated Properties as part of our consolidated indebtedness.

Conflict of Interest Policies

            We maintain policies and have entered into agreements designed to reduce or eliminate potential conflicts of interest. We have adopted governance principles governing our affairs and the Board, as well as written charters for each of the standing Committees of the Board. In addition, we have a Code of Business Conduct and Ethics, which applies to all of our officers, directors, and employees. At least a majority of the members of our Board must qualify as independent under the listing standards for New York Stock Exchange companies and cannot be affiliated with the Simon or DeBartolo families who are significant stockholders. Any transaction between us and the Simons or the DeBartolos, including property acquisitions, service and property management agreements and retail space leases, must be approved by a majority of non-affiliated directors.

            The sale by the Operating Partnership of any property that it owns may have an adverse tax impact on the Simons or the DeBartolos and the other limited partners of the Operating Partnership. In order to avoid any conflict of interest between Simon Property and the limited partners of the Operating Partnership, our charter requires that at least six of our independent directors must authorize and require the Operating Partnership to sell any property it owns. Any such sale is subject to applicable agreements with third parties. Noncompetition agreements executed by each of the Simons contain covenants limiting the ability of the Simons to participate in certain shopping center activities in North America.

Policies With Respect To Certain Other Activities

            We intend to make investments which are consistent with applicable REIT requirements of the Code, unless the Board determines that it is no longer in our best interests to qualify as a REIT. The Board may make such a determination because of changing circumstances or changes in the REIT requirements. We have authority to offer shares of our capital stock or other securities in exchange for property. We also have authority to repurchase or

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otherwise reacquire our shares or any other securities. We may engage in such activities in the future. We may issue shares of our common stock to holders of units of limited partnership interest in the Operating Partnership in future periods upon exercise of such holders' rights under the Operating Partnership agreement. We may also repurchase shares of our common stock subject to Board approval. It is our policy to not make any loans to our directors or executive officers for any purpose. We may make loans to joint ventures in which we participate.

Operating Strategies

            We plan to achieve our primary business objectives through a variety of methods discussed below, although we cannot assure you that we will achieve such objectives.

            Leasing.    We pursue a leasing strategy that includes:

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marketing available space to maintain or increase occupancy levels;

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renewing existing leases and originating new leases at higher base rents per square foot;

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negotiating leases that allow us to recover from our tenants the majority of our property operating, real estate tax, and advertising and promotion expenditures; and

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executing leases that provide for percentage or overage rents and/or regular or periodic fixed contractual increases in base rents.

            Management.    We draw upon our expertise gained through management of a geographically diverse Portfolio, nationally recognized as comprising high quality retail and other Properties. In doing so, we seek to maximize cash flow through a combination of:

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an active merchandising program to maintain our shopping centers as inviting shopping destinations;

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efforts to minimize overhead and operating costs which not only benefits our operations but also reduces the costs reimbursed to us from our tenants. A tenant's ability to pay rent is affected by the percentage of its sales represented by occupancy costs, which consist of rent and expense recoveries. As sales levels increase, if expenses subject to recovery are controlled, the tenant can afford to pay higher base rent.

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coordinated marketing and promotional activities that establish and maintain customer loyalty; and

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systematic planning and monitoring of results.

            We believe that if we are successful in our efforts to increase sales while controlling operating expenses we will be able to continue to increase base rents at the Properties.

            We are the manager of substantially all our Properties held as joint venture Properties and as a result we derive revenues from management fees and other services.

            Other Revenues.    Due to our size, tenant and vendor relationships, we also generate revenues from the activities of:

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Simon Brand Ventures ("Simon Brand") obtains revenues from establishing our malls as leading market resource providers for retailers and other businesses and consumer-focused corporate alliances. Simon Brand revenues sources include: payment systems (including marketing fees relating to the sales of bank-issued prepaid cards), national marketing alliances, static and digital media initiatives, business development, sponsorship, and events.

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Simon Business Network ("Simon Business") revenues are derived from the offering of products and property operating services, resulting from its relationships with vendors, to our tenants and others. These services include such items as waste handling, facility services, and energy services, as well as major capital expenditures such as roofing, parking lots and energy systems.

            We also generate other revenues through the sale or lease of land adjacent to our Properties commonly referred to as "outlots" or "outparcels."

            International Expansion.    Our investments in properties that are under operation in Europe, Japan, and Mexico are conducted through joint ventures. In Europe, we have investments in partnerships with Groupe Auchan (known as Gallerie Commerciali Italia ("GCI") in Italy) and Ivanhoe Cambridge, Inc. (known as Simon Ivanhoe S.à.r.l. ("Simon Ivanhoe") in France and Poland). In Japan, our investments are in partnerships with Mitsubishi Estate Co., Ltd. and Sojitz Corporation (formerly known as Nissho Iwai Corporation). Our Mexico investment is a joint venture with Sordo Madaleno y Asociados. We have also formed a joint venture in South Korea to develop a Premium Outlet Center. We

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and our partner, Shinsegae Co., Ltd. and Shinsegae International Co., Ltd. (collectively "Shinsegae"), each own 50% of this partnership. Lastly, we have formed joint ventures with Morgan Stanley Real Estate Fund ("MSREF") and SZITIC Commercial Property Co., Ltd. ("SZITIC CP") to develop five shopping centers in China. Four of these centers are currently under construction. We account for our international joint venture activities under the equity method of accounting, as defined by accounting policies generally accepted in the United States.

            We believe that the expertise we have gained through the development, leasing, management, and marketing of our Properties in the United States can be utilized in retail properties abroad. There are risks inherent in international operations that may be beyond our control which are described in the following section entitled "Risk Factors."

Acquisitions

            The acquisition of high quality individual properties or portfolios of properties remain an integral component of our growth strategies. On November 1, 2006, we acquired the remaining 50% interest in Mall of Georgia, a regional mall Property, from our partner for $252.6 million, including the assumption of $96.0 million of debt. As a result, we now own 100% of Mall of Georgia, and the property was consolidated as of the acquisition date.

            During 2006, we also acquired an additional 15.3% net ownership in Simon Ivanhoe, increasing our ownership interest in this joint venture to 50% effective in the first quarter of 2006.

Dispositions

            As part of our strategic plan to own high quality retail real estate, we continually evaluate our properties and sell those which no longer meet our strategic criteria. We may use the capital generated from these dispositions to invest in higher-quality and higher-growth properties. We believe that the sale of these non-core Properties will not have a material impact on our future results of operations or cash flows nor will their sale materially affect our ongoing operations. We expect that any earnings dilution from the sales on our results of operations from these dispositions will be offset by the positive impact of acquisition, development and redevelopment activities.

            During the year ended December 31, 2006, we disposed of three consolidated properties and one joint venture property in which we held a 50% interest and accounted for under the equity method. We received net proceeds of $52.7 million and recorded our share of a net gain on the disposals totaling $12.2 million. We do not believe the sale of these properties will have a material impact on our future results of operations or cash flows. We believe the disposition of these properties will enhance the average overall quality of our Portfolio. In addition, we also received capital transaction proceeds related to a beneficial interest that we held during 2006 in a mall partnership, which resulted in an $86.5 million gain, terminating our beneficial interests in this entity.

Competition

            We consider our principal competitors to be ten other major United States or internationally publicly-held companies that own or operate regional malls, outlet centers, and other shopping centers in the United States and abroad. We also compete with many commercial developers, real estate companies and other owners of retail real estate that operate in our trade areas. Some of our Properties and investments are of the same type and are within the same market area as competitor properties. The existence of competitive properties could have a material adverse effect on our ability to lease space and on the level of rents we can obtain. This results in competition for both the acquisition of prime sites (including land for development and operating properties) and for tenants to occupy the space that we and our competitors develop and manage. In addition, our Properties compete against other forms of retailing, such as catalog and e-commerce websites, that offer retail products and services.

            We believe that our Portfolio is the largest, as measured by gross leasable area ("GLA"), of any publicly-traded retail REIT. In addition, we own or have an interest in more regional malls than any other publicly-traded REIT. We believe that we have a competitive advantage in the retail real estate business as a result of:

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the size, quality and diversity of our Properties;

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our management and operational expertise;

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our extensive experience and relationships with retailers and lenders;

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our mall marketing initiatives and consumer focused strategic corporate alliances, including those developed by Simon Brand and Simon Business; and

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our ability to use our size to reduce the total occupancy cost of our tenants.

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            Our size reduces our dependence upon individual retail tenants. Approximately 4,200 different retailers occupy more than 24,000 stores in our Properties and no retail tenant represents more than 3.8% of our Properties' total minimum rents.

Certain Activities

            During the past three years, we have:

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issued 7,365,739 shares of common stock upon the conversion of common units of limited partnership interest in the Operating Partnership;

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issued 1,181,241 restricted shares of common stock, net of forfeitures, under The Simon Property Group 1998 Stock Incentive Plan (the "1998 Plan");

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issued 1,014,066 shares of common stock upon exercise of stock options under 1998 Plan;

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purchased and retired 181,000 shares of common stock;

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purchased 3,132,700 shares of common stock in the open market;

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issued 12,978,795 shares of common stock in the Chelsea Property Group, Inc. ("Chelsea") acquisition;

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issued 222,933 shares of common stock upon the conversion of 283,907 shares of Series I Preferred Stock;

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repurchased 78,012 shares of Series H preferred stock in 2004;

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issued 1,156,039 shares of Series D preferred stock in 2004 upon the conversion of Series D preferred units and repurchased 1,156,039 shares of Series D preferred stock in 2004;

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redeemed all of the 1,000,000 shares of Series E preferred stock;

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redeemed all of the 8,000,000 shares of Series F preferred stock;

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issued 13,261,712 shares of Series I preferred stock in the Chelsea acquisition;

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issued 803,948 shares of Series I preferred stock upon the exchange of Series I preferred units;

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issued 796,948 shares of Series J preferred stock in the Chelsea acquisition;

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issued and repurchased 8,000,000 shares of Series K preferred stock in 2006;

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borrowed a maximum amount of $2.0 billion under our unsecured revolving credit facility; the outstanding amount of borrowings under this facility as of December 31, 2006 was $305.1 million;

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as a co-borrower with the Operating Partnership, borrowed $1.8 billion under an unsecured acquisition facility in connection with the Chelsea acquisition, that has been fully repaid as of December 31, 2006;

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provided annual reports containing financial statements certified by our independent registered public accounting firm and quarterly reports containing unaudited financial statements to our security holders.

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not made loans to other entities or persons, including our officers and directors, other than to certain joint venture properties;

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not invested in the securities of other issuers for the purpose of exercising control, other than the Operating Partnership, certain wholly-owned subsidiaries and to acquire interests in real estate;

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not underwritten securities of other issuers; and

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not engaged in the purchase and sale or turnover of investments for the purpose of trading.

Employees

            At January 26, 2007, we and our affiliates employed approximately 4,300 persons at various properties and offices throughout the United States, of which approximately 1,600 were part-time. Approximately 1,000 of these employees were located at our corporate headquarters in Indianapolis, IN and 140 were located at our Chelsea offices in Roseland, NJ.

Corporate Headquarters

            Our corporate headquarters are located at 225 West Washington Street, Indianapolis, Indiana 46204, and our telephone number is (317) 636-1600.

Available Information

            Our Internet website address is www.simon.com. Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act are available or may be accessed free of charge through the "About Simon/Investor Relations/Financial Information" section of our Internet website as soon as reasonably practicable after we

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electronically file such material with, or furnish it to, the SEC. Our Internet website and the information contained therein or connected thereto are not intended to be incorporated into this Annual Report on Form 10-K.

            The following corporate governance documents are also available through the About Simon/Investor Relations/Corporate Governance section of our Internet website or may be obtained in print form by request of our Investor Relations Department: Governance Principles, Code of Business Conduct and Ethics, Audit Committee Charter, Compensation Committee Charter, Nominating Committee Charter, Governance Committee Charter, and Executive Committee Charter.

Executive Officers of the Registrant

            The following table sets forth certain information with respect to the executive officers of Simon Property as of December 31, 2006.

(1)

Melvin Simon is the brother of Herbert Simon and the father of David Simon.

            Set forth below is a summary of the business experience of the executive officers of Simon Property. The executive officers of Simon Property serve at the pleasure of the Board. For biographical information of Melvin Simon, Herbert Simon, David Simon, Richard S. Sokolov, Stephen E. Sterrett, and James M. Barkley, see Item 10 of this report.

            Mr. Lewis is the Executive Vice President — Leasing of Simon Property. Mr. Lewis joined Melvin Simon & Associates, Inc. ("MSA") in 1986 and held various positions with MSA and Simon Property prior to becoming Executive Vice President in charge of Leasing of Simon Property in 2002.

            Mr. Mumphrey serves as Simon Property's Executive Vice President — Property Management. He joined MSA in 1974 and also held various positions with MSA before becoming Senior Vice President of Property Management in 1993. In 2000, he became the President of Simon Business Network. Mr. Mumphrey became Executive Vice President — Property Management in 2002.

            Mr. Rulli serves as Simon Property's Executive Vice President — Chief Operating Officer — Operating Properties and previously served as Executive Vice President and Chief Administrative Officer. He joined MSA in 1988 and held various positions with MSA before becoming Simon Property's Executive Vice President in 1993 and Chief Administrative Officer in 2000. In December 2003, he was appointed to Executive Vice President — Chief Operating Officer — Operating Properties.

            Mr. Juster serves as Simon Property's Senior Vice President and Treasurer. He joined MSA in 1989 and held various financial positions with MSA until 1993 and thereafter has held various positions with Simon Property. Mr. Juster became Treasurer in 2001.

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Item 1A. Risk Factors

            The following factors, among others, could cause our actual results to differ materially from those contained in forward-looking statements made in this Annual Report on Form 10-K and presented elsewhere by our management from time to time. These factors, among others, may have a material adverse effect on our business, financial condition, operating results and cash flows, and you should carefully consider them. It is not possible to predict or identify all such factors. You should not consider this list to be a complete statement of all potential risks or uncertainties. Past performance should not be considered an indication of future performance.

Risks Relating to Debt and the Financial Markets

We have a substantial debt burden that could affect our future operations.

            As of December 31, 2006, our consolidated mortgages and other indebtedness, excluding the related premium and discount, totaled $15.3 billion, of which approximately $1.7 billion matures during 2007, including recurring principal amortization. We are subject to the risks normally associated with debt financing, including the risk that our cash flow from operations will be insufficient to meet required debt service. Our debt service costs generally will not be reduced if developments at the Property, such as the entry of new competitors or the loss of major tenants, cause a reduction in the income from the Property. Should such events occur, our operations may be adversely affected. If a Property is mortgaged to secure payment of indebtedness and income from the Property is insufficient to pay that indebtedness, the Property could be foreclosed upon by the mortgagee resulting in a loss of income and a decline in our total asset value.

We depend on external financings for our growth and ongoing debt service requirements.

            We depend primarily on external financings, principally debt financings, to fund the growth of our business and to ensure that we can meet ongoing maturities of our outstanding debt. Our access to financing depends on our credit rating, the willingness of banks to lend to us and conditions in the capital markets in general. We cannot assure you that we will be able to obtain the financing we need for future growth or to meet our debt service as obligations mature, or that the financing available to us will be on acceptable terms.

Adverse changes in our credit rating could affect our borrowing capacity and borrowing terms.

            Our outstanding senior unsecured notes and preferred stock are periodically rated by nationally recognized credit rating agencies. The credit ratings are based on our operating performance, liquidity and leverage ratios, overall financial position, and other factors viewed by the credit rating agencies as relevant to our industry and the economic outlook in general. Our credit rating can affect the amount of capital we can access, as well as the terms of any financing we obtain. Since we depend primarily on debt financing to fund our growth, adverse changes in our credit rating could have a negative effect on our future growth.

Our hedging interest rate protection arrangements may not effectively limit our interest rate risk.

            We manage our exposure to interest rate risk by a combination of interest rate protection agreements to effectively fix or cap a portion of our variable rate debt, or in the case of a fair value hedge, effectively convert fixed rate debt to variable rate debt. In addition, we refinance fixed rate debt at times when we believe rates and terms are appropriate. Our efforts to manage these exposures may not be successful.

            Our use of interest rate hedging arrangements to manage risk associated with interest rate volatility may expose us to additional risks, including a risk that a counterparty to a hedging arrangement may fail to honor its obligations. Developing an effective interest rate risk strategy is complex and no strategy can completely insulate us from risks associated with interest rate fluctuations. There can be no assurance that our hedging activities will have the desired beneficial impact on our results of operations or financial condition. Termination of these hedging agreements typically involve costs, such as transaction fees or breakage costs.

Rising interest rates could also make our equity securities less attractive.

            One of the factors that may influence the price of our equity securities in public markets is the annual distribution rate we pay as compared with the yields on alternative investments. Any significant increase in interest

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rates could lead holders of our equity securities to seek higher yields through other investments, which could adversely affect the market price of our equity securities.

Rising interest rates could adversely affect our debt service costs.

            As of December 31, 2006, approximately $0.8 billion of our total consolidated debt, adjusted to reflect outstanding derivative instruments, was subject to floating interest rates. In a rising interest rate environment, these debt service costs will increase. Increased debt service costs would adversely affect our cash flow. The impact of changes in market rates of interest on the fair value of our debt and, in turn, our future earnings and cash flows appears elsewhere in this report.

Factors Affecting Real Estate Investments and Operations

We face risks associated with the acquisition, development and expansion of properties.

            We regularly acquire and develop new properties and expand and redevelop existing Properties, and these activities are subject to various risks. We may not be successful in pursuing acquisition, development or redevelopment/expansion opportunities. In addition, newly acquired, developed or redeveloped/expanded properties may not perform as well as expected. We are subject to other risks in connection with any acquisition, development and redevelopment/expansion activities, including the following:

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construction costs of a project may be higher than projected, potentially making the project unfeasible or unprofitable;

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we may not be able to obtain financing or to refinance construction loans on favorable terms, if at all;

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we may be unable to obtain zoning, occupancy or other governmental approvals;

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occupancy rates and rents may not meet our projections and the project may not be profitable; and

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we may need the consent of third parties such as anchor tenants, mortgage lenders and joint venture partners, and those consents may be withheld.

            If a development or redevelopment/expansion project is unsuccessful, either because it is not meeting our expectations when operational or was not completed according to the project planning, we could lose our investment in the project. Further, if we guarantee the property's financing, our loss could exceed our investment in the project.

We are subject to risks related to owning retail real estate.

            We are subject to risks incidental to the ownership and operation of retail real estate. These risks include, among others:

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the risks normally associated with changes in the general economic climate;

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trends in the retail industry;

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creditworthiness of tenants;

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competition for tenants and customers;

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consumer confidence;

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impact of terrorist activities;

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changes in tax laws;

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interest and foreign currency exchange rates;

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the availability of financing; and

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potential liability under environmental and other laws.

Real estate investments are relatively illiquid.

            Our Properties represent a substantial portion of our total consolidated assets. These investments are relatively illiquid. As a result, our ability to sell one or more of our Properties or investments in real estate in response to any changes in economic or other conditions is limited. If we want to sell a Property, we cannot assure you that we will be able to dispose of it in the desired time period or that the sales price of a Property will exceed the cost of our investment.

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Environmental Risks

As owners of real estate, we can face liabilities for environmental contamination.

            Federal, state and local laws and regulations relating to the protection of the environment may require us, as a current or previous owner or operator of real property, to investigate and clean up hazardous or toxic substances or petroleum product releases at a Property or at impacted neighboring properties. These laws often impose liability regardless of whether the property owner or operator knew of, or was responsible for, the presence of hazardous or toxic substances. These laws and regulations may require the abatement or removal of asbestos containing materials in the event of damage, demolition or renovation, reconstruction or expansion of a Property and also govern emissions of and exposure to asbestos fibers in the air. Those laws and regulations also govern the installation, maintenance and removal of underground storage tanks used to store waste oils or other petroleum products. Many of our Properties contain, or at one time contained, asbestos containing materials or underground storage tanks (primarily related to auto service center establishments or emergency electrical generation equipment). The costs of investigation, removal or remediation of hazardous or toxic substances may be substantial and could adversely affect our results of operations or financial condition but is not estimable. The presence of contamination, or the failure to remediate contamination, may also adversely affect our ability to sell, lease or redevelop a Property or to borrow using a Property as collateral.

Our efforts to identify environmental liabilities may not be successful.

            Although we believe that our Portfolio is in substantial compliance with Federal, state and local environmental laws, ordinances and regulations regarding hazardous or toxic substances, this belief is based on limited testing. Nearly all of our Properties have been subjected to Phase I or similar environmental audits. These environmental audits have not revealed, nor are we aware of, any environmental liability that we believe will have a material adverse effect on our results of operations or financial condition. However, we cannot assure you that:

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existing environmental studies with respect to the Portfolio reveal all potential environmental liabilities;

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any previous owner, occupant or tenant of a Property did not create any material environmental condition not known to us;

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the current environmental condition of the Portfolio will not be affected by tenants and occupants, by the condition of nearby properties, or by other unrelated third parties; or

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future uses or conditions (including, without limitation, changes in applicable environmental laws and regulations or the interpretation thereof) will not result in environmental liabilities.

Retail Operations Risks

We are subject to risks that affect the general retail environment.

            Our concentration in the retail real estate market means that we are subject to the risks that affect the retail environment generally, including the levels of consumer spending, seasonality, the willingness of retailers to lease space in our shopping centers, tenant bankruptcies, changes in economic conditions, consumer confidence and terrorist activities. Any one or more of these factors could adversely affect our results of operations or financial condition.

We may not be able to lease newly developed Properties and renew leases and relet space at existing Properties.

            We may not be able to lease new Properties to an appropriate mix of tenants or for rents that are consistent with our projections. Also, when leases for our existing Properties expire, the premises may not be relet or the terms of reletting, including the cost of allowances and concessions to tenants, may be less favorable than the current lease terms. To the extent that our leasing plans are not achieved, our cash generated before debt repayments and capital expenditures could be adversely affected.

Some of our Properties depend on anchor stores or major tenants to attract shoppers and could be adversely affected by the loss of or a store closure by one or more of these tenants.

            Regional malls are typically anchored by department stores and other large nationally recognized tenants. The value of some of our Properties could be adversely affected if these tenants fail to comply with their contractual obligations, seek concessions in order to continue operations, or cease their operations. Department store and larger store, also referred to as "big box", consolidations typically result in the closure of existing stores or duplicate or

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geographically overlapping store locations. We do not control the disposition of those department stores or larger stores that we do not own. We also may not control the vacant space that is not re-leased in those stores we do own. Other tenants may be entitled to modify the terms of their existing leases in the event of such closures. The modification could be unfavorable to us as the lessor and could decrease rents or expense recovery charges. Additionally, major tenant closures may result in decreased customer traffic which could lead to decreased sales at other stores. If the sales of stores operating in our Properties were to decline significantly due to closing of anchors, economic conditions, or other reasons, tenants may be unable to pay their minimum rents or expense recovery charges. In the event of default by a tenant or anchor store, we may experience delays and costs in enforcing our rights as landlord to recover amounts due to us under the terms of our agreements with those parties.

We face potential adverse effects from tenants' bankruptcies.

            Bankruptcy filings by retailers occur frequently in the course of our operations. We are continually re-leasing vacant spaces resulting from tenant terminations. The bankruptcy of a tenant, particularly an anchor tenant, may make it more difficult to lease the remainder of the affected Properties. Future tenant bankruptcies could adversely affect our Properties or impact our ability to successfully execute our re-leasing strategy.

Risks Relating to Joint Venture Properties

We have limited control with respect to some of our Properties that are partially owned or managed by third parties, which may adversely affect our ability to sell or refinance the Properties.

            As of December 31, 2006, we owned interests in 146 income-producing properties with other parties. Of those, 19 Properties are included in our consolidated financial statements. We account for the other 127 properties under the equity method of accounting, which we refer to as joint venture properties. We serve as general partner or property manager for 58 of these 127 properties; however, certain major decisions, such as selling or refinancing these properties, require the consent of the other owners. Of these properties we do not serve as general partner or property manager, 59 are in our international joint ventures. The other owners also have other participating rights that we consider substantive for purposes of determining control over the properties' assets. The remaining joint venture properties are managed by third parties. These limitations may adversely affect our ability to sell, refinance, or otherwise operate these properties.

We guarantee debt or otherwise provide support for a number of joint venture Properties.

            Joint venture debt is the liability of the joint venture and is typically secured by a mortgage on the joint venture Property. As of December 31, 2006, we have loan guarantees and other guarantee obligations to support $43.6 million and $19.0 million, respectively, of our total $3.5 billion share of joint venture mortgage and other indebtedness. A default by a joint venture under its debt obligations may expose us to liability under a guaranty or letter of credit.

Other Factors Affecting Our Business

Our Common Area Maintenance (CAM) contributions may not allow us to recover the majority of our operating expenses from tenants.

            CAM costs typically include allocable energy costs, repairs, maintenance and capital improvements to common areas, janitorial services, administrative, property and liability insurance costs, and security costs. We historically have used leases with variable CAM provisions that adjust to reflect inflationary increases. However, we are making a concerted effort to shift from variable to fixed CAM contributions for our cost recoveries which will fix our tenants' CAM contributions to us. As a result, our CAM contributions may not allow us to recover all operating costs and, we cannot assure you that we will succeed in our efforts to recover a substantial portion of these costs in the future.

We face a wide range of competition that could affect our ability to operate profitably.

            Our Properties compete with other retail properties for tenants on the basis of the rent charged and location. The principal competition may come from existing or future developments in the same market areas and from discount shopping centers, outlet malls, catalogues, discount shopping clubs and electronic commerce. The presence of competitive properties also affects our ability to lease space and the level of rents we can obtain. Renovations and expansions at competing malls could also negatively affect our Properties.

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            We also compete with other retail property developers to acquire prime development sites. In addition, we compete with other retail property companies for attractive tenants and qualified management.

We expect to continue to pursue international expansion opportunities that may subject us to different or greater risk from those associated with our domestic operations.

            We hold interests in joint venture properties that are under operation in Europe, Japan and Mexico. We have also established arrangements to develop joint venture properties in China and South Korea, and expect to pursue additional expansion opportunities outside the United States. International development and ownership activities carry risks that are different from those we face with our domestic Properties and operations. These risks include:

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adverse effects of changes in exchange rates for foreign currencies;

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changes in foreign political environments, regionally, nationally, and locally;

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challenges of complying with a wide variety of foreign laws including corporate governance, operations, taxes, and litigation;

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differing lending practices;

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differences in cultures;

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changes in applicable laws and regulations in the United States that affect foreign operations;

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difficulties in managing international operations; and

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obstacles to the repatriation of earnings and cash.

            Although our international activities currently are a relatively small portion of our business (international properties represented less than 7% of the GLA of all of our properties at December 31, 2006), to the extent that we expand our international activities, these risks could increase in significance which in turn could adversely affect our results of operations and financial condition.

Some of our potential losses may not be covered by insurance.

            We maintain commercial general liability "all risk" property coverage including fire, flood, extended coverage and rental loss insurance on our Properties. One of our subsidiaries indemnifies our general liability carrier for a specific layer of losses. A similar policy written through our subsidiary also provides a portion of our initial coverage for property insurance and certain windstorm risks at the Properties located in Florida. Even insured losses could result in a serious disruption to our business and delay our receipt of revenue.

            There are some types of losses, including lease and other contract claims that generally are not insured. If an uninsured loss or a loss in excess of insured limits occurs, we could lose all or a portion of the capital we have invested in a Property, as well as the anticipated future revenue from the Property. If this happens, we may still remain obligated for any mortgage debt or other financial obligations related to the Property.

            The events of September 11, 2001 significantly affected our insurance programs. Although insurance rates remain high, since the President signed into law the Terrorism Risk Insurance Act (TRIA) in November of 2002, the price of terrorism insurance has steadily decreased, while the available capacity has been substantially increased. We have purchased terrorism insurance covering all Properties. The program provides limits up to $1 billion per occurrence for Certified (Foreign) acts of terrorism and $500 million per occurrence for Non-Certified (Domestic) acts of terrorism. The coverage is written on an "all risk" policy form. In December of 2005, the President signed into law the Terrorism Risk Insurance Extension Act (TRIEA) of 2005, thereby extending the federal terrorism insurance backstop through 2007. TRIEA narrows terms and conditions afforded by TRIA for 2006 and 2007 by: 1) excluding lines of coverage for commercial automobile, surety, burglary and theft, farm owners' multi-peril and professional liability; 2) raising the certifiable event trigger mechanism from $5 million to $50 million during 2006 and to $100 million during 2007; and 3) increasing the deductibles and co-pays assigned to insurance companies. Upon the expiration of TRIEA in 2007, we could pay higher premiums for comparable terrorism coverage and/or obtain or be otherwise able to secure less coverage than we have currently.

Terrorist attacks may adversely affect the value of our properties.

            Our higher profile Properties or markets they operate in could be potential targets for terrorism attacks, due to the large quantities of people at the Property or in the surrounding areas. Threatened or actual terrorist attacks in these high profile markets could directly or indirectly impact our Properties by resulting in lower property values, a decline in revenue, or a decline in customer traffic and, in turn, a decline in our tenants' sales.

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Inflation may adversely affect our financial condition and results of operations.

            Although inflation has not materially impacted our operations in the recent past, increased inflation could have a more pronounced negative impact on our mortgage and debt interest and general and administrative expenses, as these costs could increase at a rate higher than our rents. Also, inflation may adversely affect tenant leases with stated rent increases, which could be lower than the increase in inflation at any given time. Inflation could also have an adverse effect on consumer spending which could impact our tenants' sales and, in turn, our overage rents, where applicable.

Risks Relating to Federal Income Taxes

Our failure to qualify as a REIT would have adverse tax consequences to us and our stockholders.

            We cannot assure you that we will remain qualified as a REIT. Qualification as a REIT for federal income tax purposes is governed by highly technical and complex Internal Revenue Code provisions for which there are only limited judicial or administrative interpretations. If we fail to qualify as a REIT and any available relief provisions do not apply:

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we will not be allowed a deduction for distributions to stockholders in computing our taxable income;

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we will be subject to corporate level income tax, including any applicable alternative minimum tax, on our taxable income at regular corporate rates; and

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unless entitled to relief under relevant statutory provisions, we will also be disqualified from treatment as a REIT for the four taxable years following the year during which qualification was lost.

            As a result, net income and funds available for distribution to our stockholders will be reduced for those years in which we fail to qualify as a REIT. Also, we would no longer be required to distribute money to our stockholders. Although we currently intend to operate so as to qualify as a REIT, future economic, market, legal, tax or other considerations might cause us to revoke our REIT election.

            On October 22, 2004, President Bush signed the American Jobs Creation Act which included several provisions of the REIT Improvement Act, which added some flexibility to the REIT rules. This Act provided for monetary penalties in lieu of REIT disqualification. This better matches the severity of the penalty to the REIT's error and therefore reduces the possibility of disqualification.

Item 1B. Unresolved Staff Comments

            None.

Item 2. Properties

United States Properties

            Our Properties primarily consist of regional malls, Premium Outlet centers, community/lifestyle centers, and other properties. Our Properties contain an aggregate of approximately 200 million square feet of GLA, of which we own approximately 120.2 million square feet ("Owned GLA"). Total estimated retail sales at the Properties in 2006 were approximately $53 billion.

            Regional malls typically contain at least one traditional department store anchor or a combination of anchors and big box retailers with a wide variety of smaller stores ("Mall" stores) connecting the anchors. Additional stores ("Freestanding" stores) are usually located along the perimeter of the parking area. Our 171 regional malls are generally enclosed centers and range in size from approximately 400,000 to 2.0 million square feet of GLA. Our regional malls contain in the aggregate more than 17,800 occupied stores, including approximately 675 anchors, which are mostly national retailers.

            Premium Outlet centers generally contain a wide variety of retailers located in open-air manufacturers' outlet centers. Our 36 Premium Outlet centers range in size from approximately 200,000 to 600,000 square feet of GLA. The Premium Outlet centers are generally located near metropolitan areas including New York City, Los Angeles, Chicago, Boston, Washington, D.C., and San Francisco; or within 20 miles of major tourist destinations including Palm Springs, Napa Valley, Orlando, Las Vegas, and Honolulu.

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            Community/lifestyle centers are generally unenclosed and smaller than our regional malls. Our 69 community/lifestyle centers generally range in size from approximately 100,000 to 600,000 square feet of GLA. Community/lifestyle centers are designed to serve a larger trade area and typically contain anchor stores and other tenants that are usually national retailers among the leaders in their markets. These tenants generally occupy a significant portion of the GLA of the center. We also own traditional community shopping centers that focus primarily on value-oriented and convenience goods and services. These centers are usually anchored by a supermarket, discount retailer, or drugstore and are designed to service a neighborhood area. Finally, we own open-air centers adjacent to our regional malls designed to take advantage of the drawing power of the mall.

            We also have interests in 10 other shopping centers or outlet centers. These other Properties range in size from approximately 85,000 to 300,000 square feet of GLA. The combined other Properties represent less than 1% of our total operating income before depreciation.

            The following table provides representative data for our Properties as of December 31, 2006:

            As of December 31, 2006, approximately 93.2% of the Mall and Freestanding Owned GLA in regional malls and the retail space of the other Properties was leased, approximately 99.4% of Owned GLA in the Premium Outlet centers was leased and approximately 93.2% of Owned GLA in the community/lifestyle centers was leased.

            We own 100% of 199 of our 286 Properties, effectively control 19 Properties in which we have a joint venture interest, and hold the remaining 68 Properties through unconsolidated joint venture interests. We are the managing or co-managing general partner or member of 276 of our Properties. Substantially all of our joint venture Properties are subject to rights of first refusal, buy-sell provisions, or other sale rights for all partners which are customary in real estate partnership agreements and the industry. Our partners in our joint ventures may initiate these provisions at any time, which will result in either the use of available cash or borrowings to acquire their partnership interest or the disposal of our partnership interest.

            The following property table summarizes certain data on our regional malls, Premium Outlet centers, and community/lifestyle centers located in the United States, including Puerto Rico, as of December 31, 2006.

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