NYSE: EXR

Self-Storage Operations

We own, operate, manage, provide lending for, acquire, develop and redevelop self-storage properties (“stores”). We operate and manage our business by evaluating the operating performance of the properties for our entire portfolio which includes wholly-owned stores, stores in which we have a partial ownership interest and managed stores. Stores offer month-to-month rental of storage space for personal or business use.

As of December 31, 2025, we owned and/or operated 4,281 stores in 43 states, and Washington, D.C., comprising approximately 330.4 million square feet of net rentable space in approximately 2.9 million units.

Other Operations

Our tenant reinsurance activities include the reinsurance of risks relating to the loss of goods stored by tenants in our stores. Our customers have the option of purchasing insurance from a non-affiliated insurance company to cover certain losses to their goods stored at our facilities, as well as those we manage for third parties. A wholly-owned, consolidated subsidiary fully reinsures such policies and thereby assumes all risk of losses under these policies and receives reinsurance premiums, substantially equal to the premiums collected from our tenants, from the non-affiliated insurance company.

As of December 31, 2025, we managed 1,856 stores for third party owners. Our management business enables us to generate increased revenues through management fees as well as expand our geographic footprint, data sophistication and scale with little capital investment. We believe this expanded footprint enables us to reduce our operating costs through economies of scale. In addition, our management business is a potential future acquisition pipeline.

We have a bridge lending program, under which we provide financing to third party self storage owners for operating properties that we manage. This program helps us increase our management business, create additional potential future acquisition opportunities, and strengthen our relationships with partners, all while generating interest and fee income. We generally originate mortgage loans and mezzanine loans with the option to sell a portion of the mortgage loans to third parties,

5

while retaining our interests in the mezzanine loans. As of December 31, 2025, the total balance of bridge loans receivable was $1.5 billion.

We have made investments in preferred stock of other self-storage companies. These investments benefit us by providing dividend income, creating additional potential future acquisition opportunities through relationships with the companies in which we invest, and/or increasing our management business.

Operating Segments

We operate in two distinct segments: (1) self-storage operations; and (2) tenant reinsurance. Our self-storage operations activities include rental operations of wholly-owned stores. Tenant reinsurance activities include the reinsurance of risks relating to the loss of goods stored by tenants in our stores. For more information and comparative financial and other information on our reportable business segments, refer to the segment information footnote in the notes to the consolidated financial statements in Item 8 of this Form 10-K.

Long-Term Growth and Investment Strategies

Our primary business objectives are to maximize cash flow available for distribution to our stockholders and to achieve sustainable long-term growth in cash flow per share in order to maximize long-term stockholder value both at acceptable levels of risk. We continue to evaluate a range of growth initiatives and opportunities. Our primary strategies include the following:

Maximize the performance of our stores through strategic, efficient and proactive management

We pursue revenue-generating and expense-minimizing opportunities in our operations. We seek to maximize revenue by responding to changing market conditions through our advanced technology systems’ ability to provide real-time, interactive rental rate and discount management. We have implemented one of the most dynamic online marketing programs in the industry, which we believe will attract more customers to our stores and deliver strong returns on investment.

We continually analyze our portfolio to look for long-term value-enhancing opportunities. We proactively redevelop properties to add units or modify the existing unit mix to better meet the demand in a given market and to maximize revenue. We also redevelop properties to extend their useful life, increase visual appeal, enhance security and improve brand consistency across the portfolio.

We periodically review our portfolio to identify stores for disposal that no longer align with our strategic, geographic, or performance criteria. This disciplined approach to dispositions allows us to optimize portfolio quality and redeploy capital into markets and assets that better support our long‑term growth objectives.

Acquire self-storage stores

Our acquisitions team continues to pursue the acquisition of multi-store portfolios and single stores which can range from fully occupied to various stages of lease-up that we believe can provide stockholder value. We have established a reputation as a reliable, ethical buyer, which we believe enhances our ability to negotiate and close acquisitions. In addition, we believe our status as an UPREIT enables flexibility when structuring deals. We remain a disciplined buyer and only execute acquisitions that we believe will strengthen our portfolio and increase stockholder value.

In addition to the pursuit of operating stores, from time to time we develop stores from the ground up, frequently in a joint venture with a developer, and provide the construction capital. We also purchase stores at the completion of construction from third party developers, who build to our specifications. These stores purchased at completion of construction (a “Certificate of Occupancy store”) create additional long-term value for our stockholders. We are typically able to acquire these assets at a lower price than a stabilized store, and we expect greater long term returns on these stores on average. However, in the short term, these acquisitions cause dilution to our earnings during the two-to-four year period required to lease up the Certificate of Occupancy stores. We expect that this trend will continue as we continue to acquire Certificate of Occupancy stores.

6

Financing of Our Long-Term Growth Strategies

As a REIT, we are required to distribute annually at least 90% of our REIT taxable income to our stockholders. Consequently, we require access to additional sources of capital to fund our growth. We expect to maintain a flexible approach to financing growth. We plan to finance future acquisitions, store development and re-development, capital expenditures and our bridge loan program through a diverse capital optimization strategy which includes, but is not limited to, the following: cash generated from operations, borrowings under our revolving lines of credit (the “Credit Lines”), commercial paper, secured and unsecured financing, equity offerings, joint ventures and the sale of stores.

Credit Lines - We have two credit lines which we primarily use as short-term bridge financing until we obtain longer-term financing through either debt or equity. As of December 31, 2025, our Credit Lines had available capacity of $3.1 billion, of which $2.6 billion was undrawn.

Commercial Paper - We have a commercial paper program which we use as short-term financing until we obtain longer-term financing through either debt or equity. As of December 31, 2025, our commercial paper program had available capacity of $1.0 billion, of which $320 million was undrawn.

Secured and Unsecured Debt - We primarily use public bonds, unsecured private placement bonds and unsecured bank term loans to finance store acquisitions and development efforts. We will continue to utilize a combination of secured and unsecured financing for future store acquisitions and development. As of December 31, 2025, we had $1.1 billion of secured notes payable and $11.2 billion of unsecured notes payable outstanding.

Equity - We have an active “at the market” (“ATM”) program for selling stock. We sell stock under the ATM program from time to time to raise capital when we believe conditions are advantageous. During the year ended December 31, 2025, we did not issue or sell any shares of common stock.

We view equity interests in our Operating Partnership as another source of capital that can provide an attractive tax planning opportunity to sellers of real estate. We issue common and preferred Operating Partnership units to sellers in certain acquisitions. Common Operating Partnership units receive distributions equal to the dividends on common stock, while Preferred Operating Partnership units receive distributions at various negotiated rates. We may issue additional units in the future when circumstances are favorable. During the year ended December 31, 2025, we issued 131,027 Operating Partnership units.

Joint Ventures - As of December 31, 2025, we owned 407 of our stores through unconsolidated joint ventures with third parties. Our joint venture partners typically provide most of the equity capital required for the acquisition of stores owned in these joint ventures. Most joint venture agreements include buy-sell rights, as well as rights of first offer in connection with the sale of stores by the joint venture. We manage the day-to-day operations of the stores owned in these joint ventures and have the right to participate in major decisions relating to sales of stores or financings by the applicable joint venture, but we do not control the joint ventures.

Sale of Properties - We have not historically sold a high volume of stores, as we generally believe we are able to optimize the cash flow from stores through continued operations. However, we may sell more stores or interests in stores in the future in response to changing economic, financial, market or investment conditions. For the year ended December 31, 2025, we sold 37 stores for $305.8 million. For the year ended December 31, 2024 we sold six stores for $102.5 million.

Industry & Competition

We are the largest self-storage operator in the United States. Our three primary competitors who are public self-storage REITs are CubeSmart, National Storage Affiliates and Public Storage.

Stores offer month-to-month rental of storage space for personal or business use. Tenants typically rent fully enclosed spaces that vary in size and typically range from 5 feet by 5 feet to 20 feet by 20 feet, with an interior height of 8 feet to 12 feet. Tenants have responsibility for moving their items into and out of their units. Stores generally have on-site managers who supervise and run the day-to-day operations, providing tenants with assistance as needed.

Self-storage provides a convenient way for individuals and businesses to store their possessions due to life changes, or simply because of a need for storage space. The mix of residential tenants using a store is determined by a store’s local demographics and often includes people who are experiencing life changes such as downsizing their living space or others who

7

are not yet settled into a permanent residence. Items that tenants place in self-storage may include furniture, household items and appliances. Commercial tenants tend to include small business owners who require easy and frequent access to their goods, records, inventory or storage for seasonal goods.

Our research has shown that tenants choose a store based primarily on price and the convenience of the site to their home or business, making high-density, high-traffic population centers ideal locations for stores. A store’s visibility on the internet, perceived security, cleanliness, and the general professionalism of the store managers and staff are also contributing factors to a store’s ability to successfully secure rentals. Although most stores are leased to tenants on a month-to-month basis, tenants tend to continue their leases for extended periods of time.

The self-storage business is subject to seasonal fluctuations. A greater portion of revenues and profits are typically realized from May through September. Historically, our highest level of occupancy has been at the end of July, while our lowest level of occupancy has been in late February and early March. The self-storage industry is a mature industry with average occupancies that are typically around 90%. Our average occupancy for our same-store pool for 2025 was 93.7%.

The self-storage industry is characterized by fragmented ownership, where the largest companies in the industry own a minority of the operating stores. The remainder of the industry is characterized by numerous small, local operators. The relative scarcity of capital available to small operators for acquisitions and expansions, internet marketing, call centers, and the potential for savings through economies of scale are factors that are leading to consolidation in the industry. We believe that, as a result of this trend, significant growth opportunities exist for operators with proven management systems and sufficient capital resources to grow through acquisitions and/or third-party management platforms.

We believe that we are well positioned to compete for acquisitions. We have encountered competition when we have sought to acquire existing operating stores, especially for brokered portfolios. Competitive bidding practices have been commonplace between both public and private entities, and this will likely continue.

Regulation

Generally, stores are subject to various laws, ordinances and regulations, including regulations relating to lien sale rights and procedures and the Americans with Disabilities Act of 1990 (the “ADA”). Changes in any of these laws or regulations, as well as changes in laws affecting construction, development, operation, limitations on rent increases due to state of emergency or similar orders, disclosures regarding fees and rental increases, safety and taxation may result in significant impairments to operations, unanticipated expenditures, or loss of stores, which would adversely affect our financial position, results of operations or cash flows. In addition, noncompliance with any of these laws, ordinances or regulations could result in the imposition of fines or an award of damages to private litigants and also could require substantial capital expenditures to ensure compliance. For example, in response to wildfires in 2018, 2019, and early 2025 and floods in 2023, the State of California and some localities in California adopted temporary regulations that imposed certain limits on the rents we could charge at certain of our facilities and the extent to which we could increase rents to existing tenants. Similar restrictions could be imposed in the future in response to significant events, and these restrictions could adversely impact our operations.

Insurance activities are subject to state insurance laws and regulations as determined by the particular insurance commissioner for each state in accordance with the McCarran-Ferguson Act and are subject to the Gramm-Leach-Bliley Act and the privacy regulations promulgated by the Federal Trade Commission pursuant thereto. Store management activities may be subject to state real estate brokerage laws and regulations as determined by the particular real estate commission for each state. Our collection and processing of personal information may be subject to various data privacy and security laws, which govern the collection, use, and disclosure of personal information and are constantly evolving, may conflict with each other to complicate compliance efforts and can result in investigations, proceedings, or actions that lead to significant civil and/or criminal penalties and restrictions on data processing. Changes in any of the laws governing our conduct could have an adverse impact on our ability to conduct our business or could materially affect our financial position, results of operations or cash flows.

Human Capital

At Extra Space, our culture is driven by our belief that our people are a key driver in our success. We believe that if we focus on attracting, developing, and retaining top talent with varied backgrounds and skill sets at all levels of the organization, our employees will take care of our customers and drive growth for our shareholders.

8

As of December 31, 2025, we had 8,393 employees and believe our relationship with our employees is good. Our employees are not represented by a collective bargaining agreement. In 2025, we invited our employees to participate in an employee satisfaction survey and achieved an overall satisfaction score of 76% with 93% of our employees participating in our survey.

Compensation, Health and Well Being

We offer competitive health benefits and encourage our employees to participate in employee health and wellness programs. We offer our employees a health concierge service that helps them navigate their healthcare, from finding providers, comparing costs and resolving complex claims issues. We also offer other health-oriented benefits such as a fitness program that allows for reimbursements to employees for expenses incurred relating to fit-friendly activities, sports or exercise equipment. We also provide employees access to a network of childcare and elder care providers.

Training and Development

We believe strongly that development is a continuous journey throughout an employee’s career. We provide formal development programs, which are available to employees who are ready for an intense structured experience, that help us to attract and retain top talent with varied backgrounds and skill sets. In 2025, we invested in training and development for our employees, which included leadership training, communication training, individual development plans, site manager training and mentorship programs. Our field employees received an average of 48 hours of training and each new hire received an average of 82 hours of training in 2025.

Inclusion and Values

•We are committed to fostering an inclusive culture and living our core values of integrity, teamwork, excellence, passion and innovation. In 2025, we continued to expand participation in our employee resource groups, which provide employees with opportunities to build connections, celebrate culture, access mentoring, and engage in educational initiatives that strengthen our workplace community.

•Inclusion is central to our values and culture at Extra Space. We believe that excellence and innovation stem from varied perspectives, integrity is upheld through equitable practices, and optimal teamwork thrives in an inclusive environment. We strive to ensure every employee feels engaged and empowered to bring their whole selves to work, fueling their passion and commitment to our shared goals.

We believe that our emphasis on training and development, employee safety, employee health and well-being, and a commitment to our values lead to an increase in employee engagement and positions us to attract and retain top talent with varied backgrounds and skill sets.