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This report also includes separate Part II, Item 9A. Controls and Procedures sections and separate Exhibits 31 and 32 certifications for each of Simon and the Operating Partnership in order to establish that the requisite certifications have been made and that Simon and the Operating Partnership are each compliant with Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934 and 18 U.S.C. §1350. The separate discussions of Simon and the Operating Partnership in this report should be read in conjunction with each other to understand our results on a consolidated basis and how management operates our business.

In order to highlight the differences between Simon and the Operating Partnership, the separate sections in this report for Simon and the Operating Partnership specifically refer to Simon and the Operating Partnership. In the sections that combine disclosure of Simon and the Operating Partnership, this report refers to actions or holdings of Simon and the Operating Partnership as being “our” actions or holdings. Although the Operating Partnership is generally the entity that directly or indirectly enters into contracts and joint ventures, holds assets and incurs debt, we believe that references to “we,” “us” or “our” in this context is appropriate because the business is one enterprise and we operate substantially all of our business through the Operating Partnership.

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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 agreements, 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 the debt securities of the Operating Partnership. We strive to maintain investment grade ratings at all times for various business reasons, including their effect on our ability to access attractive capital, but we cannot assure you that we will be able to do so in the future.

If Simon’s Board of Directors determines to seek additional capital, we may raise such capital by offering equity or incurring debt, creating joint ventures with existing ownership interests in properties, entering into joint venture arrangements for new development projects, retaining cash flows or a combination of these methods. If Simon’s Board of Directors determines to raise equity capital, it may, without stockholder approval, issue additional shares of common stock or other capital stock. Simon’s Board of Directors may issue a number of shares up to the amount of our authorized capital or may issue units in any manner and on such terms and for such consideration as it deems appropriate. We may also raise additional capital by issuing common units of partnership interest in the Operating Partnership, or units. Such securities also may include additional classes of Simon’s preferred stock or preferred units of partnership interest in the Operating Partnership, or preferred units, which may be convertible into common stock or units, as the case may be. Existing stockholders and unitholders have no preemptive right to purchase shares or units in any subsequent issuances of securities by us. Any issuance of equity could dilute a stockholder’s investment in Simon or a limited partner’s investment in the Operating Partnership.

We expect most future borrowings will be made through the Operating Partnership or its subsidiaries. We might, however, incur borrowings through other entities 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 such indebtedness may be secured or unsecured. Any such indebtedness may also have full or limited recourse to the borrower or be cross-collateralized with other debt, or may be fully or partially guaranteed by the Operating Partnership. We issue unsecured debt securities through the Operating Partnership, but we may issue other debt securities which may be convertible into common or preferred stock or be accompanied by warrants to purchase common or preferred stock. We also may sell or securitize our lease receivables. Although we may borrow to fund the payment of dividends, we currently have no expectation that we will regularly do so.

The Operating Partnership has a $4.0$5.0 billion unsecured revolving credit facility, or the Credit Facility, and a $3.5 billion supplemental unsecured revolving credit facility, or Supplemental Facility, or together, the Credit Facilities. The Credit Facility can be increased in the form of additional commitments in an aggregate amount not to exceed $1.0 billion, for a total aggregate size of $5.0$6.0 billion, subject to obtaining additional lender commitments and satisfying certain customary conditions precedent. The initial maturity date of the Credit Facility is June 30, 2024.2027. The Credit Facility can be extended for two additional six-month periods to June 30, 2025,2028, at our sole option, subject to satisfying certain customary conditions precedent.

Borrowings under the Credit Facility bear interest, at our election, at either (i) (x) for Term Benchmark Loans, the Adjusted Term SOFR Rate, the applicable Local Rate, the Adjusted EURIBOR Rate, or the Adjusted TIBOR Rate, (y) for RFR Loans, if denominated in Sterling, SONIA plus a benchmark adjustment and if denominated in Dollars, Daily Simple SOFR plus a benchmark adjustment, or (z) for Daily SOFR Loans, the Adjusted Floating Overnight Daily SOFR Rate, in each case of clauses (x) through (z) above, plus a margin determined by our corporate credit rating of between 0.650% and 1.400% or (ii) for loans denominated in U.S. Dollars only, the base rate (which rate is equal to the greatest of the prime rate, the federal funds effective rate plus 0.500% or Adjusted Term SOFR Rate for one month plus 1.000%) (the “Base Rate”), plus a margin determined by our corporate credit rating of between 0.000% and 0.400%. The Credit Facility includes a facility fee determined by our corporate credit rating of between 0.100% and 0.300% on the aggregate revolving commitments under the Credit Facility.  Based upon our current credit ratings, the interest rate on the Credit Facility is SOFR plus 72.5 basis points, plus a spread adjustment to account for the transition from LIBOR to SOFR.

The Supplemental Facility’s initial borrowing capacity of $3.5 billion may be increased to $4.5 billion during its term. The initial maturity date of the Supplemental Facility is January 31, 2026 and can be extended for an additional year to January 31, 2027 at our sole option, subject to our continued compliance with the terms thereof.

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and 1.400% or (ii) for loans denominated in U.S. Dollars only, the base rate (which rate is equal to the greatest of the prime rate, the federal funds effective rate plus 0.500% or Adjusted Term SOFR Rate for one month plus 1.000%) (the “Base Rate”), plus a margin determined by our corporate credit rating of between 0.000% and 0.400%. The Supplemental Facility includes a facility fee determined by our corporate credit rating of between 0.100% and 0.300% on the aggregate revolving commitments under the Supplemental Facility.  Based upon our current credit ratings, the interest rate on the Supplemental Facility is SOFR plus 72.5 basis points, plus a spread adjustment to account for the transition from LIBOR to SOFR.

The Operating Partnership also has available a global unsecured commercial paper note program, or Commercial Paper program, of $2.0 billion, or the non-U.S. dollar equivalent thereof. The Operating Partnership may issue unsecured commercial paper notes, denominated in U.S. dollars, Euro and other currencies. Notes issued in non-U.S. currencies may be issued by one or more subsidiaries of the Operating Partnership and are guaranteed by the Operating Partnership. Notes are sold under customary terms in the U.S. and Euro commercial paper note markets and rank (either by themselves or as a result of the guarantee described above) pari passu with the Operating Partnership’s other unsecured senior indebtedness. The Commercial Paper program is supported by the Credit Facilities and, if necessary or appropriate, we may make one or more draws under the Credit Facilities to pay amounts outstanding from time to time on the Commercial Paper program.

We may also finance our business through the following:

The Operating Partnership may also issue units to contributors of properties or other partnership interests which may permit the contributor to defer tax gain recognition under the Internal Revenue Code.

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, typically limit additional indebtedness on such properties. Additionally, the Credit Facilities, our unsecured note indentures and other contracts may limit our ability to borrow and contain limits on mortgage indebtedness we may incur as well as certain financial covenants we must maintain.

Typically, we invest in or form special purpose entities to assist us in obtaining secured permanent financing at attractive terms. Permanent financing may be structured as a mortgage loan on a single property, or on a group of properties, and generally requires us to provide a mortgage lien on the property or 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 create special purpose entities to own the properties. These special purpose entities, which are common in the real estate industry, are structured so that they would not be consolidated in a bankruptcy proceeding involving a parent company. 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. Simon has adopted governance principles governing the function, conduct, selection, orientation and duties of its subsidiaries and Simon’s Board of Directors and the Company, as well as written charters for each of the standing

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The sale by the Operating Partnership of any property that it owns may have an adverse tax impact on the Simon family or other limited partners of the Operating Partnership. Any transaction between us and the Simon family, including property acquisitions, service and property management agreements and retail space leases, must be approved by the Company’s Audit Committee.

In order to avoid any conflict of interest, the Simon charter requires that at least three-fourths of Simon’s 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. A noncompetition agreement executed by Herbert Simon, Simon’s Chairman Emeritus, and a noncompetition agreement executed by David Simon, Simon’s Chairman, Chief Executive Officer and President, which remains in effect notwithstanding the expiration of David Simon’s employment agreement in 2019, contain covenants limiting their ability to participate in certain shopping center activities.

Policies With Respect To Certain Other Activities

We intend to make investments which are consistent with Simon’s qualification as a REIT, unless Simon’s Board of Directors determines that it is no longer in Simon’s best interests to so qualify as a REIT. Simon’s Board of Directors may make such a determination because of changing circumstances or changes in the REIT requirements. Simon has authority to issue shares of its capital stock or other securities in exchange for property. We previously hadalso have authority to repurchase or otherwise reacquire Simon’s shares, the Operating Partnership’s units, or any other securities. On February 13, 2017,May 9, 2022, Simon’s Board of Directors authorized a two-year extension of the previously authorized $2.0 billion common stock repurchase plan commencing on May 16, 2022, or the Repurchase Program, through March 31, 2019 and on February 11, 2019, Simon's Board of Directors authorized a new common stock repurchase plan.Program.  Under the program, the Company couldmay purchase up to $2.0 billion of its common stock during the two-year period ending May 16, 2024 in open market or privately negotiated transactions, at prices that the Company deems appropriate and subject to market conditions, applicable law, and other factors deemed relevant in the Company’s sole discretion.  On February 11, 2021.  The8 ,2024, Simon’s Board of Directors authorized a new common stock repurchase program which replaces the existing Repurchase Program was not extended.immediately, where the Company may purchase up to $2.0 billion of its common stock over the next 24 months.  As Simon repurchases shares under these programs, the Operating Partnership repurchases an equal number of units from Simon. Simon may also issue shares of its common stock, or pay cash at its option, to holders of units in future periods upon exercise of such holders’ rights under the partnership agreement of the Operating Partnership. Our policy prohibits us from making any loans to the directors or executive officers of Simon for any purpose. We may make loans to the joint ventures in which we participate. Additionally, we may make or buy interests in loans secured by real estate properties owned by others or make investments in companies that own real estate assets.

Competition

The retail real estate industry is dynamic and competitive. We compete with numerous merchandise distribution channels, including malls, outlet centers, community/lifestyle centers, and other shopping centers in the United States and abroad. We also compete with internet retailing sites and catalogs, including our tenants, which provide retailers with distribution options beyond existing brick and mortar retail properties. The existence of competitive alternatives, accelerated by the impact of COVID-19, 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 tenants to occupy the properties that we develop and manage as well as for the acquisition of prime sites (including land for development and operating properties). We believe that there are numerous factors that make our properties highly desirable to retailers, including:

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Human Capital

At December 31, 2021,2023, we and our affiliates employed approximately 3,3003,000 persons at various properties and offices throughout the United States, of which approximately 900500 were part-time. Approximately 1,000 of these employees were located at our corporate headquarters in Indianapolis, Indiana.

We believe our employees are the driving force behind our success.  To ensure we continue to attract, develop and retain the best talent across the organization, we invest in our employees and provide equal opportunities. We offer a variety of ongoing talent programs that foster continual development, high performance and overall organizational effectiveness, including a series of leadership development programs. We conduct an annual talent-assessment process for selected business functions within our corporate and field organizations that includes plans for individual employee career development and long-term leadership succession, and also conduct an annual performance appraisal process for all regular employees.

We are focused on providing a work environment that is free from any form of discrimination or harassment for any protected class and also embraces principles of inclusiveness. We have implemented a sustainable diversity and inclusion strategy, including an internal policy, targeted solutions for employees and an annual process of assessment, action and evaluation led by our human resources department.

Our compensation program is designed to, among other things, attract, retain and motivate talented and experienced individuals using a mix of competitive salaries, bonuses, equity based awards and other benefits.

Government Regulations Affecting Our Properties

We are subject to federal, state and local environmental regulations that apply generally to the ownership of real property and the operations conducted on real property.  As of December 31, 2021,2023, we are not aware of any environmental conditions or material costs of complying with environmental or other regulations that would have a material adverse effect on our overall business, financial condition, or results of operations.  However, it is possible that we are not aware of, or may become subject to, potential environmental liabilities or material costs of complying with governmental regulations that could be material.  See further discussion in Item 1A. Risk Factors.

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Available Information

Simon is a large accelerated filer (as defined in Rule 12b-2 of the Securities Exchange Act of 1934, as amended, or the Exchange Act) and is required, pursuant to Item 101 of Regulation S-K, to provide certain information regarding our website and the availability of certain documents filed with or furnished to the Securities and Exchange Commission, or the SEC. 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” section of our Internet website as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Our Internet website and the information contained therein or connected thereto are not, and 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/ 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 and Human Capital Committees Charter, and Governance and Nominating Committee Charter.

In addition, we intend to disclose on our Internet website any amendments to, or waivers from, our Code of Business Conduct and Ethics that are required to be publicly disclosed pursuant to rules of the SEC and the NYSE.

Information about our Executive Officers

The following table sets forth certain information with respect to Simon’s executive officers as of February 25, 2021.22, 2024.

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The executive officers of Simon serve at the pleasure of Simon’s Board of Directors.

Mr. Simon has served as the Chairman of Simon’s Board of Directors since 2007, Chief Executive Officer of Simon or its predecessor since 1995 and assumed the position of President in 2019. Mr. Simon has also been a director of Simon or its predecessor since its incorporation in 1993. Mr. Simon was the President of Simon’s predecessor from 1993 to 1996. He is the nephew of Herbert Simon.

Mr. Rulli serves as Simon’s Chief Administrative Officer. Mr. Rulli joined Melvin Simon & Associates, Inc., or MSA, in 1988 and held various positions with MSA and Simon thereafter. Mr. Rulli became Chief Administrative Officer in 2007 and was promoted to Senior Executive Vice President in 2011.

Mr. Fivel serves as Simon’s General Counsel and Secretary. Prior to rejoining Simon in 2011 as Assistant General Counsel and Assistant Secretary, Mr. Fivel served as Executive Vice President, General Counsel and Secretary of Brightpoint, Inc. Mr. Fivel was previously employed by MSA from 1988 until 1993 and then by Simon from 1993 to 1996.  Mr. Fivel was promoted to General Counsel and Secretary in 2017.

Mr. McDade serves as Simon’s Executive Vice President and Chief Financial Officer and Treasurer.Officer. Mr. McDade joined Simon in 2007 as the Director of Capital Markets and was promoted to Senior Vice President of Capital Markets in 2013. Mr. McDade became2013 and Treasurer in 2014 and2014.  He was promoted to Executive Vice President and Chief Financial Officer in 2018.

Mr. Snyder serves as Simon’s Assistant General Counsel and Assistant Secretary. Mr. Snyder joined Simon in 2016 as Senior Deputy General Counsel. Immediately prior to joining Simon, Mr. Snyder was Managing Partner of the Crimson Fulcrum Strategic Institute. Mr. Snyder previously served as Executive Vice President, General Counsel and Corporate Secretary for Beechcraft Corporation as well as Chief Counsel Mergers & Acquisitions for Koch Industries, Inc.  Mr. Snyder was promoted to Assistant General Counsel and Assistant Secretary in 2017.  

Mr. Reuille serves as Simon’s Senior Vice President and Chief Accounting Officer and prior to that as Simon’s Vice President and Corporate Controller. Mr. Reuille joined Simon in 2009 and was promoted to Senior Vice President and Chief Accounting Officer in 2018.

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Risks RelatingRisk Related to RetailTenant Operations

The ongoing novel coronavirus (COVID-19) pandemic and governmental restrictions intended to prevent its spread, as well as other future epidemics, pandemics or public health crises, could have a significant negative impact on our business, financial condition, results of operations, cash flow and liquidity and our ability to access the capital markets, satisfy our debt service obligations and make distributions to our shareholders.

The COVID-19 pandemic has had a material negative impact on economic and market conditions around the world, and, notwithstanding the fact that vaccines are being administered in the United States and elsewhere, the pandemic continues to adversely impact economic activity in retail real estate. The impact of the COVID-19 pandemic continues to evolve and governments and other authorities, including where we own or hold interests in properties, have imposed measures intended to control its spread, including restrictions on freedom of movement, group gatherings and business operations such as travel bans, border closings, business closures, quarantines, stay-at-home, shelter-in-place orders, density limitations and social distancing measures. Governments and other authorities are in varying stages of lifting or modifying some of these measures. However, governments and other authorities have already been forced to, and others may in the future, reinstitute these measures or impose new, more restrictive measures, if the risks, or the tenants’ and consumers' perception of the risks, related to the COVID-19 pandemic worsen at any time. Although tenants and consumers have been adapting to the COVID-19 pandemic, with tenants adding services like curbside pickup, and while consumer risk-tolerance is evolving, such adaptations and evolution may take time, and there is no guarantee that retail will return to pre-pandemic levels even once the pandemic subsides.

As of December 31, 2021, we owned or held an interest in 199 income-producing properties in the United States located in 37 states and Puerto Rico. We also own an 80% noncontrolling interest in TRG, which has an interest in 24 regional, super-regional, and outlet malls in the U.S. and Asia. Internationally, as of December 31, 2021, we had ownership interests in 33 properties primarily located in Asia, Europe and Canada and have two international outlet properties under development. We have an interest in a European investee that has interests in 11 Designer Outlet properties, as more fully described elsewhere in this Annual Report. As of December 31, 2021, we also owned a 22.4% equity stake in Klépierre SA, or Klépierre, a publicly traded, Paris-based real estate company, which owns, or has an interest in, shopping centers located in 14 countries in Europe.

Demand for retail space and the profitability of our properties depends, in part, on the ability and willingness of tenants to enter into and perform obligations under leases. Although the harshest restrictions to prevent the spread of COVID-19 have generally been lifted or reduced, and vaccines are being administered in the United States and elsewhere, the willingness of customers to visit our properties may be reduced and our tenants’ businesses adversely affected, based upon many factors, including local transmission rates, the emergence of new variants, the development, availability, distribution, effectiveness and acceptance of existing and new vaccines, and the effectiveness and availability of cures or treatments.  Further, demand could remain reduced due to heightened sensitivity to risks associated with the transmission of COVID-19 or other associated diseases.  In addition, some of our properties are located at or within a close proximity to tourist destinations, and these properties and our tenants’ businesses have been, and may be in the future, heavily and adversely impacted by reductions in travel and tourism resulting from travel bans or restrictions and general concern regarding the risk of travel.

The continuing impact of the COVID-19 pandemic on our business, financial condition, results of operations, cash flows, liquidity and ability to satisfy our debt service obligations and make distributions to our shareholders could depend on additional factors, including:

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To the extent any of these risks and uncertainties adversely impact us in the ways described above or otherwise, they may also have the effect of heightening many of the other risks described herein.Our Properties

Conditions that adversely affect the general retail environment could materially and adversely affect us.

Our concentration in the retail real estate market – our primary source of revenue is derived from retail tenants –which means that we could be materially and adversely affected by conditions that materially and adversely affect the retail environment generally, including, without limitation:

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To the extent that any or a portion of these conditions occur, they are likely to impact the retail industry, our retail tenants, the emergence of new tenants, our own investments in certain retailers and brands, the demand for retail space, market rents and rent growth, the vacancy levels at our properties, the value of our properties, which could directly or indirectly materially and adversely affect our financial condition, operating results and overall asset value.

Additionally, a portion of our lease income is derived from overage rents based on sales over a stated base amount that directly depend on the sales volume of our retail tenants. Accordingly, declines in our tenants’ sales performance could reduce the income produced by our properties. Over time, declines in our tenants’ sales performance can also negatively impact our ability to sign new and renewal leases at desired rents.

Some of our properties depend on anchor stores or other large nationally recognized tenants to attract shoppers and we could be materially and adversely affected by the loss of one or more of these anchors or tenants.

Our properties are typically anchored by department stores and other large nationally recognized tenants. Certain of our anchors and other tenants have ceased their operations, downsized their brick-and-mortar presence or failed to comply with their contractual obligations to us and others, and such actions have become more prevalent during the COVID-19 pandemic.others.

Sustained adverse pressure on the results of department stores and other national retailers may have a similarly sustained adverse impact upon our own results. Certain department stores and other national retailers have experienced, and may continue to experience for the foreseeable future (given uncertainty with respect to current and future macroeconomic conditions and consumer confidence levels), considerable decreases in customer traffic in their retail stores, increased competition from alternative retail options such as those accessible via the Internet and other forms of pressure on their business models. As pressure on these department stores and other national retailers increases, especially due to the COVID-19 pandemic, their ability to maintain their stores, meet their obligations both to us and to their external lenders and suppliers, withstand takeover attempts or avoid bankruptcy and/or liquidation may be impaired and result in closures of their stores or their seeking of a lease modification with us. Any lease modification could be unfavorable to us as the lessor and could decrease

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bankruptcy filing by, or relating to, one of our tenants would generally prohibit us from evicting this tenant, and bar all efforts by us to collect pre-bankruptcy debts from that tenant, or from their property, unless we receive an order permitting us to do so from the bankruptcy court. In addition, we cannot evict a tenant solely because of its bankruptcy. If a lease is assumed by the tenant in bankruptcy, all pre-bankruptcy balances due under the lease must be paid to us in full. If a lease is rejected, the unsecured claim we hold against a bankrupt tenant might be paid only to the extent that funds are available and only in the same percentage as is paid to all other holders of unsecured claims, and there are restrictions under bankruptcy laws that limit the amount of the claim we can make if a lease is rejected. As a result, it is likely that we would recover substantially less than the full value of any unsecured claims we hold. In addition, we may make lease modifications either pre- or post-bankruptcy for certain tenants undergoing significant financial distress in order for them to continue as a going concern. Furthermore, we may be required to incur significant expense in re-tenanting the space formerly leased to the bankrupt tenant. We continually seek to re-lease vacant spaces resulting from tenant terminations. The bankruptcy of a tenant, particularly an anchor tenant or a national tenant with multiple locations, may require a substantial redevelopment of its space, the success of which cannot be assured, and may make the re-tenanting of its space difficult and costly. Any such bankruptcies also make it more difficult to lease the remainder of the space at the affected property or properties. Future tenant bankruptcies may strain our resources and impact our ability to successfully execute our re-leasing strategy and could materially and adversely affect us.

We face a wide range of competition that could affect our ability to operate profitably, including e-commerce.

Our properties compete with other forms of retailing such as pure online retail websites as well as other retail properties such as single user freestanding discounters (Costco, Walmart and Target). In addition, many of our tenants are omni-channel retailers who also distribute their products through online sales. Our business currently is predominantly reliant on consumer demand for shopping at physical stores, and we could be materially and adversely affected if we are unsuccessful in adapting our business to evolving consumer purchasing habits. The increased popularity of digital and mobile technologies has accelerated the transition of a percentage of market share from shopping at physical stores to web-based shopping, and the ongoing COVID-19 pandemic and restrictions intended to prevent its spread have significantly increased the utilization of e-commerce and may, particularly in certain market segments, accelerate the long-term penetration of pure online retail which has been able to sell non-essential goods during the COVID-19 pandemic. Not only has the temporary closure of our retail properties and the restrictions put in place by state, local and federal officials caused consumers who otherwise would have purchased from retailers at our properties to increase their utilization of pure online retail websites, but consumers whose previous use of online retail was low or non-existent have recently turned to pure online retail as a necessity due to the inability to access our properties and the ability to purchase non-essential goods from these pure online retailers. Although a brick-and-mortar presence may have a positive impact on retailers’ online sales, the increased utilization of pure online shopping may lead to the closure of underperforming stores by retailers, which could impact our occupancy levels and the rates that tenants are willing to pay to lease our space.

Vacant space at our properties could materially and adversely affect us.

Certain of our properties have had vacant space available for prospective tenants, and those properties may continue to experience, and other properties may commence experiencing, such oversupply in the future. Among other causes, (1) in recent years there hashad been an increased number of bankruptcies of anchor stores and other national retailers, as well as store closures, and (2) there has been lower demand from retail tenants for space, due to certain retailers increasing their use of e-commerce websites to distribute their merchandise, with each of (1) and (2) accelerating as a result of the COVID-19 pandemic.merchandise. As a result of the increased bargaining power of creditworthy retail tenants, there is downward pressure on our rental rates and occupancy levels, and this increased bargaining power may also result in us having to increase our spend on tenant improvements and potentially make other lease modifications in order to attract or retain tenants, any of which, in the aggregate, could materially and adversely affect us.

We may not be able to lease newly developed properties to or renew leases and relet space at existing properties with an appropriate mix of tenants or at desired rents, if at all.

We may not be able to lease new properties to an appropriate mix of tenants that generates optimal customer traffic. 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. Tenant preferences for properties may also change over time, like recent trends towards right-sizing portfolios, repositioning space and locations and pursuing new store concepts, and our properties may no longer align with such preferences. If we fail to identify and secure the right blend of tenants at our newly developed and existing properties that offer diversified categories and uses, such as retail, specialty entertainment, restaurants, and health and wellness, and that keep up with evolving customer preferences, our properties may not appeal to the communities they serve. If we elect to pursue a “mixed use”

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properties may be negatively impacted by delays in opening and/or the performance of such non-retail uses. Additionally, an oversupply of space in the trade areas in which our properties operate could reduce market rents, negatively impacting the terms upon which we lease our properties. To the extent that our leasing goals are not achieved, we could be materially and adversely affected.

Risks RelatingActs of violence, civil unrest or criminal activity, actual or threatened terrorist attacks and inappropriate and unacceptable behavior by consumers at our properties could adversely affect our business operations.

Because our properties are open to Real Estate Investments and Operations

Our international activities may subject usthe public, they are exposed to risks related to acts of violence, civil unrest and criminal activity as well as actual or threatened terrorist attacks that may be beyond our control or ability to prevent, and recently there has been an increased risk of organized retail crime and physical violence, the severity and frequency of which varies by market and location. If any of these incidents were to occur, the relevant property could face material damage physically and reputationally, and the revenue generated by such property could be negatively impacted. Consumers may also perceive a heightened threat of these risks due to increased crime in certain markets and negative media attention. Concern around safety risk may impact the willingness of consumers, tenants and tenants’ employees to shop and/or work at our properties, which could result in decreased consumer foot traffic and decreased sales at our properties, directly and indirectly impacting our revenue and overall asset value.

We face a wide range of competition that could affect our ability to operate profitably, including e-commerce, and the evolution of consumer preferences and purchasing habits.

Our properties compete with other forms of retailing such as pure online retail websites as well as other types of retail properties such as single user freestanding discounters (Costco, Walmart and Target). In addition, many of our tenants are differentomni-channel retailers who also distribute their products through online sales and provide options to consumers like buy online pick up in store, buy online ship to store or buy online return to store. Our business currently is predominantly reliant on consumer demand for shopping at physical stores, and our business could be materially and adversely affected if we are unsuccessful in adapting our business to evolving consumer purchasing habits. The increased popularity of digital and mobile technologies has accelerated the transition of a percentage of market share from shopping at physical stores to web-based shopping, and the COVID-19 pandemic and restrictions intended to prevent its spread significantly increased the utilization of e-commerce and may, particularly in certain market segments, accelerate the long-term penetration of pure online retail. Although a brick-and-mortar presence may have a positive impact on retailers’ online sales, the increased utilization of pure online shopping may lead to the closure of underperforming stores by retailers, which could impact our occupancy levels and the rates that tenants are willing to pay to lease our space. Additionally, the increase in online shopping may result in certain tenants underreporting sales at our properties which may materially and adversely impact our collection of overage rent. Examples may include, retailers and restaurants not reporting curbside pick-up sales or greater thanonline sales fulfilled with store inventory, and tenants reducing store sales by including online returns processed in the store

Epidemics, pandemics or other public health crisis, and governmental reactions thereto, could have a significant negative impact on our and our tenants’ business, financial condition, results of operations, cash flow and liquidity and our ability to access the capital markets, satisfy our debt service obligations and make distributions to our shareholders.

Epidemics, pandemics or other health crises could have, a material negative impact on economic and market conditions around the world and an adverse impact on economic activity in retail real estate, as occurred during the height of the COVID-19 pandemic. Governments and other authorities could respond to epidemics, pandemics or other health crises, by imposing or re-imposing measures intended to control the spread of disease, including restrictions on freedom of movement, group gatherings and business operations such as travel bans, border closings, business closures, quarantines, stay-at-home, shelter-in-place orders, density limitations and social distancing measures. Although we cannot determine the severity of any such measures in the future, which depend on the government's recognition of the negative impacts on local communities and infrastructure resulting from future mandates and associated government responses, any restrictions could negatively impact us, our tenants and consumer behavior.

Demand for retail space and the profitability of our properties depends, in part, on the ability and willingness of tenants to enter into and perform obligations under leases, and the willingness of customers to visit our properties. Even without strict governmental restrictions, such as those put in place during the COVID-19 pandemic, the willingness of consumers to visit our properties may be reduced and our tenants’ businesses adversely affected, based upon many factors, including local transmission rates of disease, the development, availability, distribution, effectiveness and acceptance of existing and new vaccines, the effectiveness and availability of cures or treatments, and overall sensitivity to risks associated with our domestic operations.

Asthe transmission of December 31, 2021, we held interests in consolidated and joint venture properties that operate in Austria, Canada, France, Italy, Germany, Japan, Malaysia, Mexico, the Netherlands, South Korea, Spain, Thailand, and the United Kingdom. We also have an equity stake in Klépierre, a publicly traded European real estate company, which operates in 14 countries in Europe. Accordingly, our operating results and the valuediseases. In addition, some of our international operationsproperties are located at or within a close

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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.

In the event that these risks were realized at the same time at multiple properties, we could be materially and adversely affected.

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, industry, or other conditions may be limited. The real estate market is affected by many factors, such as general economic conditions, availability and terms of financing, interest rates and other factors, including supply and demand for space, that are beyond our control. 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 at all, or that the sales price of a property will be attractive at the relevant time or exceed the carrying value of our investment. Moreover, if a property is mortgaged, we may not be able to obtain a release of the lien on that property without the payment of the associated debt and/or a substantial prepayment penalty, which could restrict our ability to dispose of the property, even though the sale might otherwise be desirable.

Risks Relating to DebtIncome Taxes and REIT Rules

Simon and certain subsidiaries of the Operating Partnership have elected to be taxed as REITs in the United States. The failure to maintain Simon’s or the Subsidiary REITs’ qualifications as REITs or changes in applicable tax laws or regulations could result in adverse tax consequences.

In the United States, Simon and certain subsidiaries of the Operating Partnership have elected to be taxed as REITs under Sections 856 through 860 of the Internal Revenue Code. We believe that Simon and these subsidiaries, or the Subsidiary REITs, have been organized and have operated in a manner which allows them to qualify for taxation as REITs under the Internal Revenue Code. We intend to continue to operate in this manner. However, qualification and taxation as REITs depend upon the ability of Simon and the Subsidiary REITs to satisfy several requirements (some of which are outside our control), including tests related to our annual operating results, asset diversification, distribution levels and diversity of stock ownership. The various REIT qualification tests required by the Internal Revenue Code are highly technical and complex. Accordingly, there can be no assurance that Simon or any of the Subsidiary REITs has operated in accordance with these requirements or will continue to operate in a manner so as to qualify or remain qualified as a REIT.

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Disruption in the capital and credit markets may increase the cost of capital and may adversely affect our ability to access external financings for our growth and ongoing debt service requirements.

We depend on external financings, principally debt financings, to fund the growth of our business, execute on our business model, and to ensure that we can meet ongoing maturities of our outstanding debt. Our access to financing depends on our credit ratings, the willingness of lending institutions and other debt investors to grant credit to us and conditions in the capital markets in general.general, which can impact both our cost of capital and, to a lesser degree, our ability to access capital. An economic recession may cause extreme volatility and disruption in the capital and credit markets. We rely upon the Credit Facilities as sources of funding for numerous transactions. Our access to these funds is dependent upon the ability of each of the participants to the Credit Facilities to meet their funding commitments to us. When markets are volatile, access to capital and credit markets could be disrupted over an extended period of time and one or more financial institutions may not have the available capital to meet their previous commitments to us. The failure of one or more participants to the Credit Facilities to meet their funding commitments to us could have a material adverse effect on us, including as a result of making it difficult to obtain the financing we may need for future growth and/or meeting our debt service requirements. Additionally, a high interest rate environment, as we are currently experiencing, and which the Company believes will continue in 2024, could prevent us from accessing capital at attractive interest rates, which could adversely impact our ability to refinance existing debt at maturity as well as our ability to fund development and/or opportunistic acquisition activities. We cannot assure you that we will be able to obtain the financing we need for the future growth of our business, execution on our business model or to meet our debt service requirements, or that a sufficient amount of financing will be available to us on favorable terms, or at all.

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participants, has identified the Secured Overnight Financing Rate (“SOFR”), a new index calculated by short-term repurchase agreements, backed by U.S. Treasury securities, as its preferred alternative rate for LIBOR in the U.S.  Working groups formed by financial regulators in other jurisdictions, including the U.K., the European Union, Japan and Switzerland, have also recommended alternatives to LIBOR denominated in their local currencies.  Although SOFR appears to be the preferred replacement rate for USD LIBOR, it is unclear if other benchmarks may emerge or if other rates will be adopted outside of the United States.  At this time, it is not possible to predict how markets will respond to SOFR or other alternative reference rates as the transition away from the LIBOR benchmark is anticipated in coming years.  Accordingly, the outcome of these reforms is uncertain and any changes in the methods by which LIBOR is determined or regulatory activity related to LIBOR’s phaseout could cause LIBOR to perform differently than in the past or cease to exist.  The consequences of these developments cannot be entirely predicted, and there can be no assurance that they will not result in financial market disruptions, significant increases in benchmark interest rates, substantially higher financing costs or a shortage of available debt financing, any of which could have an adverse effect on us, which currently would be limited by our relatively low exposure to variable rate LIBOR-based debt.

Risks Relating to Income Taxes

Simon and certain subsidiaries of the Operating Partnership have elected to be taxed as REITs in the United States. The failure to maintain Simon’s or the Subsidiary REITs’ qualifications as REITs or changes in applicable tax laws or regulations could result in adverse tax consequences.

In the United States, Simon and certain subsidiaries of the Operating Partnership have elected to be taxed as REITs under Sections 856 through 860 of the Internal Revenue Code. We believe that Simon and these subsidiaries, or the Subsidiary REITs, have been organized and have operated in a manner which allows them to qualify for taxation as REITs under the Internal Revenue Code. We intend to continue to operate in this manner. However, qualification and taxation as REITs depend upon the ability of Simon and the Subsidiary REITs to satisfy several requirements (some of which are outside our control), including tests related to our annual operating results, asset diversification, distribution levels and diversity of stock ownership. The various REIT qualification tests required by the Internal Revenue Code are highly technical and complex. Accordingly, there can be no assurance that Simon or any of the Subsidiary REITs has operated in accordance with these requirements or will continue to operate in a manner so as to qualify or remain qualified as a REIT.

If Simon or any of the Subsidiary REITs fail to comply with those provisions, Simon or any such Subsidiary REIT may be subject to monetary penalties or ultimately to possible disqualification as REITs. If such events occur, and if available relief provisions do not apply:

Any such corporate tax liability could be substantial and would reduce the amount of cash available for, among other things, our operations and distributions to stockholders. In addition, if Simon fails to qualify as a REIT, it will not be required to make distributions to our stockholders. Moreover, a failure by any subsidiary of the Operating Partnership that has elected to be taxed as a REIT to qualify as a REIT would also cause Simon to fail to qualify as a REIT, and the same adverse consequences would apply to it and its stockholders. Failure by Simon or any of the Subsidiary REITs to qualify as a REIT also could impair our ability to expand our business and raise capital, which could materially and adversely affect us.

Additionally, we are subject to certain income-based taxes, both domestically and internationally, and other taxes, including state and local taxes, franchise taxes, and withholding taxes on dividends from certain of our international

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investments. We currently follow local tax laws and regulations in various domestic and international jurisdictions. Should these laws or regulations change, the amount of taxes we pay may increase accordingly.

If the Operating Partnership fails to qualify as a partnership for federal income tax purposes, we would cease to qualify as a REIT and suffer other adverse consequences.

We believe that the Operating Partnership is treated as a partnership for federal income tax purposes. As a partnership, the Operating Partnership is not subject to federal income tax on its income. Instead, each of its partners, including us, is allocated, and may be required to pay tax with respect to, such partner’s share of its income. We cannot assure you that the Internal Revenue Service, or the IRS, will not challenge the status of the Operating Partnership or any other subsidiary partnership or limited liability company in which we own an interest as a disregarded entity or partnership for federal income tax purposes, or that a court would not sustain such a challenge. If the IRS were successful in treating the Operating Partnership or any such other subsidiary as an entity taxable as a corporation for federal income tax purposes, we would fail to meet the gross income tests and certain of the asset tests applicable to REITs and, accordingly, we would likely cease to qualify as a REIT. Also, the failure of the Operating Partnership or any subsidiary partnerships or limited liability company to qualify as a disregarded entity or partnership for applicable income tax purposes could cause it to become subject to federal and state corporate income tax, which would reduce significantly the amount of cash available for debt service and for distribution to its partners or members, including us.

Our ownership of TRSs is subject to certain restrictions, and we will be required to pay a 100% penalty tax on certain income or deductions if our transactions with our TRSs are not conducted on arm’s-length terms.

We own securities in taxable REIT subsidiaries, or TRSs, and may acquire securities in additional TRSs in the future. A TRS is a corporation other than a REIT in which a REIT directly or indirectly holds stock, and that has made a joint election with such REIT to be treated as a taxable REIT subsidiary. If a TRS owns more than 35% of the total voting power or value of the outstanding securities of another corporation, such other corporation will also be treated as a TRS. Other than some activities relating to lodging and health care facilities, a TRS may generally engage in any business, including the provision of customary or non-customary services to tenants of its parent REIT. A TRS is subject to federal income tax as a regular C corporation. In addition, a 100% excise tax will be imposed on certain transactions between a TRS and its parent REIT that are not conducted on an arm’s length basis.

A REIT’s ownership of securities of a TRS is not subject to the 5% or 10% asset tests applicable to REITs. Not more than 25% of the value of Simon’s or any Subsidiary REIT’s total assets may be represented by securities (including securities of TRSs), other than those securities includable in the 75% asset test, and not more than 20% of the value of our total assets or the assets of any Subsidiary REIT may be represented by securities of TRSs. We anticipate that the aggregate value of the stock and securities of any TRS and other nonqualifying assets that Simon or each such Subsidiary REIT owns will be less than 25% (or 20%, as applicable) of the value of Simon’s or such subsidiary’s total assets, and we will monitor the value of these investments to ensure compliance with applicable ownership limitations. In addition, we intend to structure transactions with any TRSs that we own to ensure that they are entered into on arm’s length terms to avoid incurring the 100% excise tax described above. There can be no assurance, however, that we will be able to comply with the above limitations or to avoid application of the 100% excise tax discussed above.

Dividends payable by REITs generally do not qualify for the reduced tax rates available for some dividends, which may negatively affect the value of our shares.

Income from “qualified dividends” payable to U.S. stockholders that are individuals, trusts and estates are generally subject to tax at preferential rates, currently at a maximum federal rate of 20%. Dividends payable by REITs, however, generally are not eligible for the preferential tax rates applicable to qualified dividend income. Under the Tax Cuts and Jobs Act, or the TCJA, however, U.S. stockholders that are individuals, trusts and estates generally may deduct up to 20% of the ordinary dividends (e.g., dividends not designated as capital gain dividends or qualified dividend income) received from a REIT for taxable years beginning after December 31, 2017 and before January 1, 2026. Although this deduction reduces the effective tax rate applicable to certain dividends paid by REITs (generally to 29.6% assuming the shareholder is subject to the 37% maximum rate), such tax rate is still higher than the tax rate applicable to corporate dividends that constitute qualified dividend income. Accordingly, investors who are individuals, trusts and estates may perceive investments in REITs to be relatively less attractive than investments in the stocks of non-REIT corporations that pay dividends, which could materially and adversely affect the value of the shares of REITs, including the per share trading price of our common stock.

The tax imposed on REITs engaging in “prohibited transactions” may limit our ability to engage in transactions which would be treated as sales for U.S. federal income tax purposes.

A REIT’s net income from prohibited transactions is subject to a 100% penalty tax. In general, prohibited transactions

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are sales or other dispositions of property, other than foreclosure property, held primarily for sale to customers in the ordinary course of business. Although we do not intend to hold any properties that would be characterized as held for sale to customers in the ordinary course of our business, unless a sale or disposition qualifies under certain statutory safe harbors, such characterization is a factual determination and no guarantee can be given that the IRS, would agree with our characterization of our properties or that we will always be able to make use of the available safe harbors.

REIT distribution requirements could adversely affect our liquidity and our ability to execute our business plan.

In order for Simon and the Subsidiary REITs to qualify to be taxed as REITs, and assuming that certain other requirements are also satisfied, Simon and each such Subsidiary REIT generally must distribute at least 90% of their respective REIT taxable income, determined without regard to the dividends paid deduction and excluding any net capital gains, to their respective equity holders each year. To this point, Simon and each such Subsidiary REIT have historically distributed at least 100% of its taxable income and thereby avoided income tax altogether. To the extent that Simon or any such Subsidiary REIT satisfies this distribution requirement and qualifies for taxation as a REIT, but distributes less than 100% of its REIT taxable income, Simon or such subsidiary will be subject to U.S. federal corporate income tax on its undistributed net taxable income and could be subject to a 4% nondeductible excise tax if the actual amount that is distributed to equity holders in a calendar year is less than the minimum required distribution amount. We intend to make distributions to the equity holders of Simon and the Subsidiary REITs to comply with the REIT requirements of the Internal Revenue Code.

From time to time, Simon and the Subsidiary REITs might generate taxable income greater than their respective cash flow as a result of differences in timing between the recognition of taxable income and the actual receipt of cash or the effect of nondeductible capital expenditures, the creation of reserves, or required debt or amortization payments. If Simon or the Subsidiary REITs do not have other funds available in these situations, Simon or such subsidiaries could be required to access capital on unfavorable terms (the receipt of which cannot be assured), sell assets at disadvantageous prices, distribute amounts that would otherwise be invested in future acquisitions, capital expenditures or repayment of debt, or make taxable distributions of capital stock or debt securities to make distributions sufficient to enable them to pay out enough of their respective REIT taxable income to satisfy the REIT distribution requirement and avoid corporate income tax and the 4% excise tax in a particular year. These alternatives could increase costs or reduce our equity. Further, amounts distributed will not be available to fund the growth of our business. Thus, compliance with the REIT requirements may adversely affect our liquidity and our ability to execute our business plan.

Complying with REIT requirements might cause us to forgo otherwise attractive acquisition opportunities or liquidate otherwise attractive investments.

To qualify to be taxed as REITs for U.S. federal income tax purposes, Simon and the Subsidiary REITs must ensure that, at the end of each calendar quarter, at least 75% of the value of their respective assets consist of cash, cash items, government securities and “real estate assets” (as defined in the Internal Revenue Code), including certain mortgage loans and securities. The remainder of their respective investments (other than government securities, qualified real estate assets and securities issued by a TRS) generally cannot include more than 10% of the outstanding voting securities of any one issuer or more than 10% of the total value of the outstanding securities of any one issuer.

Additionally, in general, no more than 5% of the value of Simon’s and the Subsidiary REITs’ total assets (other than government securities, qualified real estate assets and securities issued by a TRS) can consist of the securities of any one issuer, and no more than 20% of the value of their respective total assets can be represented by securities of one or more TRSs. If Simon or any of the Subsidiary REITs fails to comply with these requirements at the end of any calendar quarter, Simon or any such Subsidiary REIT must correct the failure within 30 days after the end of the calendar quarter or qualify for certain statutory relief provisions to avoid losing its REIT qualification and suffering adverse tax consequences. As a result, we might be required to liquidate or forgo otherwise attractive investments. These actions could have the effect of reducing our income and amounts available for distribution to equity holders. Moreover, if Simon or the Subsidiary REITs are compelled to liquidate their investments to meet any of the asset, income or distribution tests, or to repay obligations to lenders, Simon or such subsidiaries may be unable to comply with one or more of the requirements applicable to REITs or may be subject to a 100% tax on any resulting gain if such sales constitute prohibited transactions.

In addition to the asset tests set forth above, to qualify to be taxed as REITs, Simon and the Subsidiary REITs must continually satisfy tests concerning, among other things, the sources of their respective income, the amounts they distribute to equity holders and the ownership of their respective shares. We might be unable to pursue investments that would be otherwise advantageous to us in order to satisfy the source-of-income or asset-diversification requirements for qualifying as REITs. Thus, compliance with the REIT requirements may hinder our ability to make certain attractive investments.

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Partnership tax audit rules could have a material adverse effect on us.

The Bipartisan Budget Act of 2015 changed the rules applicable to U.S. federal income tax audits of partnerships. Under the rules, among other changes and subject to certain exceptions, any audit adjustment to items of income, gain, loss, deduction, or credit of a partnership (and any partner’s distributive share thereof) is determined, and taxes, interest, or penalties attributable thereto could be assessed and collected, at the partnership level. Absent available elections, it is possible that a partnership in which we directly or indirectly invest, could be required to pay additional taxes, interest and penalties as a result of an audit adjustment, and we, as a direct or indirect partner of these partnerships, could be required to bear the economic burden of those taxes, interest, and penalties even though Simon and the Subsidiary REITs, as REITs, may not otherwise have been required to pay additional corporate-level taxes had they owned the assets of the partnership directly. The partnership tax audit rules apply to the Operating Partnership and its subsidiaries that are classified as partnerships for U.S. federal income tax purposes. The changes created by these rules are sweeping and, accordingly, there can be no assurance that these rules will not have a material adverse effect on us.

Legislative, administrative, regulatory or other actions affecting REITs, including positions taken by the IRS, could have a material adverse effect on us and our investors.

The rules dealing with U.S. federal income taxation are constantly under review by persons involved in the legislative process, and by the IRS and the U.S. Department of the Treasury, or the Treasury. Changes to the tax laws or interpretations thereof by the IRS and the Treasury, with or without retroactive application, could materially and adversely affect us and our investors. New legislation (including the TCJA, and any technical corrections legislation), Treasury regulations, administrative interpretations or court decisions could significantly and negatively affect the ability of Simon and certain subsidiaries of the Operating Partnership to qualify to be taxed as REITs and/or the U.S. federal income tax consequences to us and our investors of such qualification.

The TCJA has significantly changed the U.S. federal income taxation of U.S. businesses and their owners, including REITs and their stockholders. A change made by the TCJA that could affect us and our stockholders is that it generally limits the deduction for net business interest expense in excess of 30% of a business’s adjusted taxable income except for taxpayers that engage in certain real estate businesses and elect out of this rule (provided that such electing taxpayers must use an alternative depreciation system for certain property).

Risks RelatingRelated to Joint Ventures

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

As of December 31, 2021,2023, we owned interests in 101100 income-producing properties with other parties. Of those, 1719 properties are included in our consolidated financial statements. We apply the equity method of accounting to the other 8481 properties (the joint venture properties) and our investments in Klépierre (a publicly traded, Paris-based real estate company) and, The Taubman Realty Group, LLC, or TRG, and Jamestown, as well as our investments in certain entities involved in retail operations, such as J.C. Penney and SPARC Group; intellectual property and licensing ventures,venture, such as Authentic Brands Group, LLC, or ABG, and Eddie Bauer Ipco;ABG; and an e-commerce venture Rue Gilt Groupe, or RGG, (collectively, our other platform investments). We serve as general partner or property manager for 5351 of these 8481 joint venture properties; however, certain major decisions, such as approving the operating budget and selling, refinancing, and redeveloping the properties, require the consent of the other owners. Of the joint venture properties for which we do not serve as general partner or property manager, 2324 are in our international joint ventures. These international properties are managed locally by joint ventures in which we share control of the properties with our partner. The other owners have participating rights that we consider substantive for purposes of determining control over the joint venture properties’ assets. The remaining joint venture properties, Klépierre, TRG, Jamestown, and our joint ventures with ABG, J.C. Penney, RGG, and SPARC Group are managed by third parties.

These investments, and other future similar investments, could involve risks that would not be present were a third party not involved, including the possibility that partners or other owners might become bankrupt, suffer a deterioration in their creditworthiness, or fail to fund their share of required capital contributions. If one of our partners or other owners in these investments were to become bankrupt, we may be precluded from taking certain actions regarding our investments without prior court approval, which at a minimum may delay the actions we would or might want to take. Additionally, partners or other owners could have economic or other business interests or goals that are inconsistent with our own business interests or goals, and could be in a position to take actions contrary to our policies or objectives.

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decisions, such as a sale, financing or development, because neither we nor our partner or other owner has full control over the partnership or joint venture. Disputes between us and partners or other owners might result in litigation or arbitration that could increase our expenses and prevent Simon’s officers and/or directors from focusing their time and efforts on our business. Consequently, actions by, or disputes with, partners or other owners might result in subjecting properties owned by the partnership or joint venture to additional risk. In addition, we risk the possibility of being liable for the actions of our partners or other owners.

The Operating Partnership guarantees debt or otherwise provides 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, which is non-recourse to us. Nevertheless, the joint venture’s failure to satisfy its debt obligations could result in the loss of our investment therein. As of December 31, 2021,2023, the Operating Partnership guaranteed joint venture-related mortgage indebtedness of $209.9$139.2 million. A default by a joint venture under its debt obligations would expose us to liability under a guaranty. We may elect to fund cash needs of a joint venture through equity contributions (generally on a basis proportionate to our ownership interests), advances or partner loans, although such fundings are not typically required contractually or otherwise.

Risks Relating to Environmental MattersGeneral Risk Factors

As owners of real estate, we can face liabilities forAn increased focus on metrics and reporting related to environmental, contamination,social and our effortsgovernance (“ESG”) factors, may impose additional costs and expose us to identify environmental liabilities may not be successful.new risks.

ManyInvestors and other stakeholders have become more focused on understanding how companies address a variety of ESG factors. As they evaluate investment decisions, many investors look not only at company disclosures but also to ESG rating systems that have been developed by third parties to allow ESG comparisons among companies. Although we participate in a number of these ratings systems, we do not participate in all such systems. The criteria used in these ratings systems may conflict and change frequently, and we cannot predict how these third parties will score us, nor can we have any assurance that they score us accurately or other companies accurately or that other companies have provided them with accurate data. We supplement our participation in ratings systems with published disclosures of our properties contain, or at one time contained, asbestos containing materials or underground storage tanks (primarily relatedESG activities, but some investors may desire other disclosures that we do not provide. In addition, the SEC is currently evaluating potential rule making that could mandate additional ESG disclosure and impose other requirements on us. In addition, some of the domestic and foreign jurisdictions in which we operate could mandate additional ESG disclosure and impose additional requirements on us. For example, in October 2023, California passed two bills that require certain companies that do business in California to auto service center establishments or emergency electrical generation equipment),disclose their GHG emissions and as a result we may be subjectclimate-related financial risks starting in 2026. Failure to regulatory actionparticipate in connection with U.S. federal, state and local laws and regulations relating to hazardous or toxic substances. We may also be held liable tocertain of the third parties for personal injury or property damage incurred by the parties in connection with any such substances. The costs of investigation, removal or remediation of hazardous or toxic substances, and related liabilities, may be substantial and could materially and adversely affect us. The presence of hazardous or toxic substances, or theparty ratings systems, failure to remediate the related contamination, may also adversely affect our abilityscore well in those ratings systems, failure to sell, leaseprovide certain ESG disclosures, or redevelop a property orunfavorable comparisons in these areas to borrow money using a property as collateral.

Although we believe that our portfolio is in substantial compliance with U.S. federal, state and local environmental laws 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 is reasonably likely to have a material adverse effect on us. However, we cannot assure you that:

We face risks associated with climate change.

Due to changes in weather patterns caused by climate change, our properties in certain markets could experience increases in storm intensity and rising sea levels. Over time, climate changeother companies could result in volatile or decreased demand for retail space atreputational harm when employees, investors, partners and tenants are making employment, investment and business choices, and could cause certain ofinvestors to be unwilling to invest in our properties or, in extreme cases, our inability to operate the properties at all. Climate change may also have indirect effects on our business by increasing the cost of (or making unavailable) insurance on favorable terms, or at all, increasing the cost of energy at our properties or requiring us to spend funds to repair and protect our properties against such risks. Moreover, compliance with new laws or regulations related to climate change, including compliance with “green” building codes, may require us to make improvements to our existing properties or increase taxes and fees assessed on us or our properties.

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Some of our properties are subject to potential natural or other disasters.

A number of our properties are located in areas subject to a higher risk of natural disasters such as earthquakes, fires, hurricanes, floods, tornados, hail or tsunamis. The occurrence of natural disasters,stock which could become more intense and more volatile in light of climate change, can adversely impact operations and development/redevelopment projects at our properties, increase investment costs to repair or replace damaged properties, increase future property insurance costs and negatively impact the tenant demand for lease space. If insurance is unavailable to us or is unavailable on acceptable terms, or our insurance is not adequate to cover losses from these events, we could be materially and adversely affected.stock price.

Other Factors Affecting Our Business

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

We maintain insurance coverage with third-party carriers who provide a portion of the coverage for specific layers of potential losses, including commercial general liability, fire, flood, extended coverage and rental loss insurance on all of our properties in the United States as well as cyber coverage. The initial portion of coverage, excess of policy deductibles, not provided by third-party carriers is either insured through our wholly-owned captive insurance company or other financial arrangements controlled by us. A third party carrier has, in turn, agreed to provide, if required, evidence of coverage for this layer of losses under the terms and conditions of the carrier’s policy. A similar policy either written through our captive insurance company or other financial arrangements controlled by us also provides initial coverage for property insurance and certain windstorm risks at the properties located in coastal windstorm locations.

There are some types of losses, including lease and other contract claims, which generally are not insured or are subject to large deductibles. 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 it could generate but may remain obligated for any mortgage debt or other financial obligation related to the property.

We currently maintain insurance coverage against acts of terrorism on all of our properties in the United States on an “all risk” basis in the amount of up to $1 billion. Despite the existence of this insurance coverage, any threatened or actual terrorist attacks where we operate could materially and adversely affect our property values, revenues, consumer traffic and tenant sales.

We face risks associated with security breaches through cyber‑attacks, cyber intrusions or otherwise, as well as other significant disruptions of our information technology (IT) networks and related systems.

Our IT networks and related systems are essential to the operation of our business and our ability to perform day-to-day operations and, in some cases, may be critical to the operations of certain of our tenants. We face risks associated with security breaches, whether through cyber-attacks or cyber intrusions over the Internet, malware, computer viruses, hardware or software corruption or failure or poor product or vendor/developer selection (including a failure of security controls incorporated into or applied to such hardware or software), service provider error or failure, intentional or unintentional actions by employees (including the failure to follow our security protocols) and other significant disruptions of our IT networks and related systems. Although we make efforts to maintain the security and integrity of these types of IT networks and related systems, and we have implemented various measures to manage the risk of a security breach or disruption, there can be no assurance that our security efforts and measures will be effective or that attempted security breaches or disruptions would not be successful or damaging. Even the most well protected information, networks, systems and facilities remain potentially vulnerable because the techniques used in such attempted security breaches evolve and generally are not recognized until launched against a target, and in some cases are designed not to be detected and, in fact, may not be detected. Accordingly, we may be unable to anticipate these techniques or to implement adequate security barriers or other preventative measures, and thus it is impossible for us to entirely mitigate this risk.

The risk of a security breach or significant disruption has generally increased due to our increased reliance on technology, a rise in the number, intensity, and sophistication of attempted attacks globally, and the remote working environment throughout the COVID-19 pandemic. A breach or significant and extended disruption in the functioning of our systems, including our primary website, could damage our reputation and cause us to lose customers, tenants and revenues, generate third party claims, cause operational disruption, result in the unintended and/or unauthorized public disclosure or the misappropriation of proprietary, personal identifying and confidential information, and require us to incur significant expenses to address and remediate or otherwise resolve these kinds of issues. We may not be able to recover these expenses in whole or in any part from our service providers or responsible parties, or their or our insurers. Additionally, cyber-attacks perpetrated against our tenants, including unauthorized access to customers’ credit card data and other confidential information, could diminish consumer confidence and spending and materially and adversely affect us.

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Our success depends, in part, on our ability to attract, motivate, retain and retaindevelop talented employees, and our failure to do so, including the loss of any one of our key personnel, could adversely impact our business.

The success of our business depends, in part, on the leadership and performance of our executive management team and key employees, including our CEO, who operate without the existence of employment agreements. Many of our senior executives have extensive experience and strong reputations in the real estate industry, which aid us in identifying opportunities and negotiating with tenants. Our ability to attract, retainmotivate and motivateretain talented employees, and develop talent internally, could significantly impact our future performance. Competition for these individuals is intense, and we cannot assure you that we will retain our executive management team and other key employees or that we will be able to attract, andmotivate, retain and/or develop other highly qualified individuals for these positions in the future. Additionally, the compensation and benefits packages we may need to offer to remain competitive for these individuals could increase the cost of replacement and retention. Losing any one or more of these persons could adversely affect our business, disrupt short-term operational performance, diminish our opportunities and weaken our relationships with lenders, business partners, existing and prospective tenants and others, which could have a material adverse effect on us.

Provisions in Simon’s charterWe face risks associated with security breaches through cyber-attacks, cyber intrusions or otherwise, as well as other significant disruptions of our computer systems, hardware, technology infrastructure, online sites and byrelated systems.‑laws

We rely on computer systems, hardware, software, technology infrastructure and online sites for the operation of our business and our ability to perform day-to-day operations (collectively, “IT Systems”) and, in some cases, our IT