UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

For the fiscal year ended December 31, 2025

OR

For the transition period from to

Commission file number 1-13232 (Apartment Investment and Management Company)

Commission file number 0-56223 (Aimco OP L.P.)

Apartment Investment and Management Company

Aimco OP L.P.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (833-373-1300)

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

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

None (Apartment Investment and Management Company)

Partnership Common Units (Aimco OP L.P.)

(title of each class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined by Rule 405 of the Securities Act.

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Apartment Investment and Management Company:

Aimco OP L.P.:

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

The aggregate market value of the voting and non-voting common stock of Apartment Investment and Management Company held by non-affiliates of Apartment Investment and Management Company was approximately $1.2 billion based upon the closing price of $8.65 on June 30, 2025.

As of February 27, 2026, there were 143,870,326 shares of Class A common stock (“Common Stock”) outstanding.

EXPLANATORY NOTE

Apartment Investment and Management Company (“Aimco” or the “Company”), a Maryland corporation, is a self-administered and self-managed real estate investment trust, or REIT. On December 15, 2020, Aimco completed the separation of its businesses (the “Separation”), creating two, separate and distinct, publicly traded companies, Aimco and Apartment Income REIT Corp. (“AIR”) (Aimco and AIR together, as they existed prior to the Separation, “Aimco Predecessor”). Events noted in this filing as occurring before December 15, 2020, were those entered into by Aimco Predecessor.

Aimco, through a wholly-owned subsidiary, is the general partner and is, directly, the special limited partner of Aimco OP L.P. (“Aimco Operating Partnership”). As of December 31, 2025, Aimco owned 94.1% of the legal interest in the common partnership units of Aimco Operating Partnership and 96.6% of the economic interest in Aimco Operating Partnership. The remaining 5.9% legal interest is owned by limited partners. The common partnership units of Aimco Operating Partnership are referred to as “OP Units”. As the sole general partner of Aimco Operating Partnership, Aimco has exclusive control of Aimco Operating Partnership’s day-to-day management.

Aimco Operating Partnership holds all of Aimco's assets and manages the daily operations of Aimco's business. Pursuant to the Aimco Operating Partnership agreement, Aimco is required to contribute to Aimco Operating Partnership all proceeds from the offerings of its securities. In exchange for the contribution of such proceeds, Aimco receives additional interests in Aimco Operating Partnership with similar terms (e.g., if Aimco contributes proceeds of a stock offering, Aimco receives partnership units with terms substantially similar to the stock issued by Aimco).

This filing combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2025, of Aimco and Aimco Operating Partnership. Where it is important to distinguish between the two entities, we refer to them specifically. Otherwise, references to “we,” “us,” or “our” mean, collectively, Aimco, Aimco Operating Partnership, and their consolidated entities.

We believe combining the periodic reports of Aimco and Aimco Operating Partnership into this single report provides the following benefits:

We operate Aimco and Aimco Operating Partnership as one enterprise; the management of Aimco directs the management and operations of Aimco Operating Partnership; and Aimco OP GP, LLC, Aimco Operating Partnership’s general partner, is managed by Aimco.

We believe it is important to understand the few differences between Aimco and Aimco Operating Partnership in the context of how Aimco and Aimco Operating Partnership operate as a consolidated company. Aimco has no assets or liabilities other than its investment in Aimco Operating Partnership. Also, Aimco is a corporation that issued publicly traded equity in the past, whereas Aimco Operating Partnership is a partnership that has no publicly traded equity. Except for the net proceeds from stock offerings by Aimco, which were contributed to Aimco Operating Partnership in exchange for additional limited partnership interests (of a similar type and in an amount equal to the shares of stock sold in the offering), Aimco Operating Partnership generates all remaining capital required by its business.

Equity, partners’ capital, and noncontrolling interests are the main areas of difference between the consolidated financial statements of Aimco and those of Aimco Operating Partnership. Interests in Aimco Operating Partnership held by entities other than Aimco are classified within partners’ capital in Aimco Operating Partnership’s consolidated financial statements and as noncontrolling interests in Aimco’s consolidated financial statements.

To help investors understand the differences between Aimco and Aimco Operating Partnership, this report provides: separate consolidated financial statements for Aimco and Aimco Operating Partnership; a single set of consolidated notes to such financial statements that includes separate discussions of each entity’s stockholders’ equity or partners’ capital, and earnings per share or earnings per unit, as applicable; and a combined Management’s Discussion and Analysis of Financial Condition and Results of Operations section that includes discrete information related to each entity, where appropriate.

This report also includes separate Part II, Item 9A. Controls and Procedures sections and separate Exhibits 31 and 32 certifications for Aimco and Aimco Operating Partnership in order to establish that the requisite certifications have been made and that Aimco and Aimco Operating Partnership are both compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. §1350.

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

AIMCO OP, L.P.

TABLE OF CONTENTS

ANNUAL REPORT ON FORM 10-K

For the Fiscal Year Ended December 31, 2025

FORWARD-LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements in certain circumstances. Certain information included in this Annual Report contains or may contain information that is forward-looking within the meaning of the federal securities laws. Forward-looking statements include all statements that are not historical statements of fact and those regarding our intent, belief, or expectations. Words such as “anticipate(s),” “expect(s),” “intend(s),” “plan(s),” “believe(s),” “may,” “will,” “would,” “could,” “should,” “seek(s)” and similar expressions, or the negative of these terms, are intended to identify such forward-looking statements. The forward-looking statements in this Annual Report include, without limitation, statements regarding: our future plans and goals, including the timing and amount of capital expected to be returned to our stockholders, our pipeline investments and projects, our plans to eliminate certain near term debt maturities, our estimated value creation and potential, our timing, scheduling and budgeting, projections regarding revenue and expense growth, our plans for dispositions, our strategic partnerships and value added therefrom, the potential for adverse economic and geopolitical conditions, which negatively impact our operations, including on our ability to maintain current or meet projected occupancy, rental rate and property operating results; the effect of acquisitions, dispositions, developments; our ability to meet budgeted costs and timelines, and achieve budgeted rental rates related to our development investments; expectations regarding sales of our apartment communities and the use of proceeds thereof; the availability and cost of corporate debt; and our ability to comply with debt covenants, including financial coverage ratios. We caution investors not to place undue reliance on any such forward-looking statements.

These forward-looking statements are based on management’s judgment as of this date, which is subject to risks and uncertainties that could cause actual results to differ materially from our expectations, including, but not limited to: our ability to complete the plan of sale and liquidation of Aimco and its subsidiaries (the “Plan of Sale and Liquidation”), including our ability to successfully market and/or sell the remaining assets, on the terms and timeline anticipated, or at all; our ability to close sales following the execution of purchase and sale agreements on the terms and timeline anticipated, or at all, including the satisfaction or waiver of the conditions to closing the sales transactions currently under contract and any other sales transactions Aimco may undertake (the “Portfolio Sales Transactions”); changes in the amount and timing of the total liquidating distributions resulting from the Plan of Sale and Liquidation and the Portfolio Sales Transactions, including as a result of unexpected levels of transaction costs, delayed or terminated closings, liquidation costs, unpaid or additional liabilities and obligations, changes in the net asset sales proceeds for the sale of the remaining properties from prior estimates or other unanticipated difficulties; the possibility of converting to a liquidating trust or other liquidating entity; the ability of our board of directors to terminate the Plan of Sale and Liquidation; the response of our residents, tenants and business partners to the Plan of Sale and Liquidation and/or Portfolio Sales Transactions; difficulties in employee retention as a result of the ongoing Plan of Sale and Liquidation and/or Portfolio Sales Transactions; the occurrence of any event, change or other circumstances that could give rise to the termination of the Plan of Sale and Liquidation and/or the Portfolio Sales Transactions; the outcome of legal proceedings that may be instituted against Aimco, our subsidiaries, our and their directors and others related to the Plan of Sale and Liquidation and/or Portfolio Sales Transactions; the risk that disruptions caused by or relating to the Plan of Sale and Liquidation and/or Portfolio Sales Transactions will harm our business, including current plans and operations; the possibility that we do not reserve adequate funds to cover expenses and liabilities, and the possibility that our creditors, in that instance, could seek repayment from our stockholders up to the amount of the total liquidating distributions; risks relating to the market value of Aimco’s common stock; risks associated with contracts or other instruments containing consent and/or other provisions that may be triggered by the Plan of Sale and Liquidation and/or Portfolio Sales Transactions; restrictions during the pendency of the Portfolio Sale Transactions that may impact our ability to pursue certain business opportunities or strategic transactions; our ability to remain listed on the NYSE; geopolitical events which may adversely affect the markets in which our securities trade, and other macro-economic conditions, including, among other things, rising interest rates and inflation, which heightens the impact of the other risks and factors described herein; real estate and operating risks, including fluctuations in real estate values and the general economic climate in the markets in which we operate and competition for residents in such markets; national and local economic conditions, including the pace of job growth and the level of unemployment; the amount, location and quality of competitive new housing supply; the timing and effects of dispositions and developments; expectations regarding sales of apartment communities; insurance risks, including the cost of insurance, and natural disasters and severe weather such as hurricanes; supply chain disruptions, particularly with respect to raw materials such as lumber, steel, and concrete; the impact of tariffs and global trade disruptions on us; financing risks, including the availability and cost of financing; the risk that cash flows from operations may be insufficient to meet required payments of principal and interest; the risk that earnings may not be sufficient to maintain compliance with debt covenants, including financial coverage ratios; legal and regulatory risks, including costs associated with prosecuting or defending claims and any adverse outcomes; the terms of laws and governmental regulations that affect us and interpretations of those laws and regulations; and possible environmental liabilities, including costs, fines or penalties that may be incurred due to necessary remediation of contamination of apartment communities presently owned by us.

In addition, our current and continuing qualification as a real estate investment trust involves the application of highly technical and complex provisions of the Internal Revenue Code of 1986, as amended (“Code”) and depends on our ability to meet the various requirements imposed by the Code through actual operating results, distribution levels and diversity of stock ownership.

Readers should carefully review our financial statements and the notes thereto, as well as Item 1A. Risk Factors of this Annual Report and subsequent documents we file from time to time with the Securities and Exchange Commission (“SEC”). These risk factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included elsewhere in this Annual Report. We undertake no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise, except as required by law.

As used herein and except as the context otherwise requires, “we,” “our,” and “us” refer to Apartment Investment and Management Company (which we refer to as Aimco), Aimco OP L.P. (which we refer to as Aimco Operating Partnership) and their consolidated entities, collectively.

Certain financial and operating measures found herein and used by management are not defined under accounting principles generally accepted in the United States (“GAAP”). These measures are defined and reconciled to the most comparable GAAP measures under the Non-GAAP Measures heading.

PART I

ITEM 1. BUSINESS

The Company

Aimco, a Maryland corporation is a self-administered and self-managed REIT. On December 15, 2020, Aimco completed the Separation, creating two separate and distinct, publicly traded companies, Aimco and AIR. Aimco, through a wholly-owned subsidiary, is the general partner and directly is the special limited partner of Aimco Operating Partnership, a Delaware Limited Partnership. Aimco conducts all of its business and owns all of its assets through Aimco Operating Partnership.

Please refer to Note 15 to the consolidated financial statements in Item 8 for discussion regarding our business segments.

Executive Overview

On November 10, 2025, the board of directors of Aimco (the “Board”) approved a plan of sale and liquidation (the “Plan of Sale and Liquidation”), which contemplates the sale or disposition of all the Company’s assets, the wind-down of the Company’s business and affairs and the termination of the Company’s existence by voluntary dissolution in accordance with the Maryland General Corporation Law (the “MGCL”), and directed that the Plan of Sale and Liquidation be submitted for approval to the Company’s stockholders. On February 6, 2026, our stockholders adopted the Plan of Sale and Liquidation. Pursuant to the Plan of Sale and Liquidation and in accordance with the applicable provisions of law, the Company is authorized to do all other things reasonably necessary or desirable to complete the liquidation and dissolution of the Company and its subsidiaries, including Aimco Operating Partnership. The general partner of the Aimco Operating Partnership has the authority to elect to legally dissolve the Aimco Operating Partnership in its sole and absolute discretion, and we intend to effect such liquidation. The Company is not required to obtain any further stockholder approval with respect to the liquidation and dissolution of the Company. Until the filing of the articles of dissolution with the Maryland State Department of Assessments and Taxation, the Board may modify, amend or terminate the Plan of Sale and Liquidation (and authorize us to seek to dispose of all our assets through a merger, business combination or similar transaction) without approval by the stockholders if it determines that such action would be advisable and in the best interests of the Company. The Company has no present plans or intentions to modify, amend or abandon the Plan of Sale and Liquidation. The Plan of Sale and Liquidation presents certain risks, and there can be no assurance that the Plan of Sale and Liquidation will result in any transaction or that the Plan of Sale and Liquidation will be completed. See Item 1A. Risk Factors.

Prior to the adoption of the Plan of Sale and Liquidation, our mission was to make real estate investments, primarily focused on the multifamily sector within targeted U.S. markets, where outcomes were enhanced through our human capital and substantial value was created for investors, teammates, and the communities in which we operated.

Subsequent to the adoption of the Plan of Sale and Liquidation, we plan to sell our assets in an orderly fashion and return net proceeds from asset sales and cash on hand to our stockholders, subject to payment of our liabilities and obligations. We will continue to manage each of our properties, together with our property managers, until such time as such property is sold, for purposes of achieving the orderly winding up of the business and affairs of the Company and its subsidiaries in accordance with the Plan of Sale and Liquidation.

Competition

Many developers, managers, and owners of apartment real estate and underdeveloped land, as well as REITs, private real estate companies, and investors competed with us in acquiring, developing, obtaining financing for, and disposing of apartment communities. This competition affected our ability to realize our real estate development and transactional objectives.

We have competition from other properties located in markets in which we have interests both from an operating perspective and with respect to the disposition of our assets. With respect to the disposition of our assets, our ability to compete is also affected by national and local economic trends, availability of investment alternatives, availability and cost of capital, construction and renovation costs, existing laws and regulations, new legislation and population trends.

In addition, our apartment communities compete for residents with other housing alternatives, including other rental apartments and condominiums, and single-family homes that are available for rent, as well as new and existing condominiums and single-family homes for sale. Competitive residential housing, as well as household formation and job creation in a particular area, could adversely affect our ability to lease apartment homes and to increase or maintain rental rates prior to disposition or adversely affect the value of such properties upon sale.

Taxation

Aimco

Aimco has elected to be taxed as a REIT under the Code, commencing with its initial taxable year, and intends to continue to operate in such a manner throughout the Plan of Sale and Liquidation and until the end of its final taxable year, which may occur in connection with the formation of a liquidating trust or other liquidating entity, if applicable, and which Aimco anticipates, but cannot be certain, will occur after most of Aimco’s remaining assets have been sold. The Code imposes various requirements related to organizational structure, distribution levels, diversity of stock ownership, and certain restrictions with regard to owned assets and categories of income that must be met in order to continue to qualify as a REIT. If Aimco continues to qualify for taxation as a REIT, it will generally not be subject to United States federal corporate income tax on its taxable income that is currently distributed to stockholders. This treatment substantially eliminates the “double taxation” (at the corporate and stockholder levels) that generally results from an investment in a corporation.

If Aimco continues to qualify for taxation as a REIT, it will generally be entitled to receive a deduction for dividends paid, including distributions pursuant to its Plan of Sale and Liquidation (including distributions or deemed distributions to our stockholders of interests in a liquidating trust or other liquidating entity), provided that the Plan of Sale and Liquidation is completed within 24 months of its adoption. We anticipate that Aimco's liquidating distributions will exceed its taxable income recognized in each tax year following the adoption of the Plan of Sale and Liquidation, and that its liquidation will be completed within 24 months of such adoption. In that case, if Aimco continues to qualify for taxation as a REIT, it will generally not be subject to United States federal income tax on any gain or other income recognized following the adoption of the Plan of Sale and Liquidation, including any gain that Aimco recognizes upon a transfer of appreciated assets to a liquidating trust or the conversion to a liquidating entity and the receipt of interests in the liquidating trust or liquidating entity by its stockholders.

To maintain its status as a REIT, Aimco must, among other things, continue to satisfy various qualification requirements pursuant to the Code, including requirements relating to the nature of its gross assets and income, the timing and amount of distributions and the composition of its stockholders. However, as a result of the liquidation or otherwise, circumstances may arise that could cause Aimco to fail to qualify as a REIT prior to its transfer of assets and obligations to or conversion to a liquidating trust or liquidating entity, or otherwise prior to its final liquidating distributions. In addition, the Board could cause Aimco to revoke or otherwise terminate its REIT election at any time. Should Aimco lose its status as a REIT, it would be taxable as a corporation for United States federal income tax purposes. In that case, Aimco would be subject to United States federal income taxes at the corporate rate for the taxable year in which its qualification as a REIT terminates, and in any subsequent years, with respect to its income from operations and from sales and distributions of appreciated assets in connection with our Plan of Sale and Liquidation, and without any tax deduction for dividends that it pays.

So long as Aimco continues to qualify as a REIT, any net income that it derives from a “prohibited transaction” will be subject to a 100% tax. The term “prohibited transaction” generally includes a sale or other disposition of property (other than foreclosure property) that is held as inventory or primarily for sale to customers in the ordinary course of a trade or business. We intend to effect the Plan of Sale and Liquidation and transactions related thereto, and believe we have conducted our operations, in such a manner so that no asset that we own (or are treated as owning) will be treated as, or as having been, held for sale to customers, and that a sale of any such asset will not be treated as having been in the ordinary course of Aimco's business and we expect the asset sales made pursuant to the Plan of Sale and Liquidation may either qualify for the prohibited transaction tax safe harbor or otherwise not be subject to such prohibited transactions tax. However, whether property is held “primarily for sale to customers in the ordinary course of a trade or business” depends on the particular facts and circumstances. No assurance can be given that any property that we sell will not be treated as property held for sale to customers, or that Aimco can comply with certain safe-harbor provisions of the Code that would prevent such treatment.

Certain of our operations, or a portion thereof, are conducted through taxable REIT subsidiaries, each of which we refer to as a “TRS”. A TRS is a corporate subsidiary that has elected to be a TRS instead of a REIT and, as such, is subject to United States federal corporate income tax. The prohibited transaction 100% tax does not apply to gains from the sale of property that is held through a TRS or other taxable corporation, although such income will be subject to tax in the hands of the corporation at regular corporate rates.

Aimco Operating Partnership

Aimco Operating Partnership is treated as a “pass-through” entity for United States federal income tax purposes and is not subject to United States federal income taxation. Partners in Aimco Operating Partnership, however, are subject to tax on their allocable share of partnership income, gains, losses, deductions, and credits, regardless of whether the partners receive any actual distributions of cash or other property from Aimco Operating Partnership during the taxable year. Generally, the characterization of any particular item is determined by Aimco Operating Partnership rather than at the partner level, and the amount of a partner’s allocable share of such item is governed by the terms of Aimco Operating Partnership’s partnership agreement. Aimco Operating Partnership is subject to tax in certain states.

Regulation

General

Apartment development is subject to various laws, ordinances, and regulations, including those concerning entitlement, building, health and safety, site and building design, environment, zoning, and sales, and similar matters apply to or affect the real estate development industry.

Apartment communities and their owners are subject to various laws, ordinances, and regulations, including those related to real estate broker licensing and regulations relating to recreational facilities such as swimming pools, activity centers, and other common areas.

Changes in laws increasing the potential liability for environmental conditions existing on communities or increasing the restrictions on discharges or other conditions, as well as changes in laws affecting development, construction, and safety requirements, may result in significant unanticipated expenditures, which could adversely affect our net income and cash flows from operating activities.

In addition, existing rent control laws, as well as future enactment of rent control or rent stabilization laws, or other laws and ordinances regulating multifamily housing, may reduce rental revenue or increase operating costs in particular markets.

Environmental

Various federal, state, and local laws subject real estate owners or operators to liability for management, and the costs of removal or remediation, of certain potentially hazardous materials that may be present. These materials may include lead-based paint, asbestos, polychlorinated biphenyls, and petroleum-based fuels. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the release or presence of such materials. In connection with the ownership of real estate, we could potentially be liable for environmental liabilities or costs associated with our real estate, whether currently owned, acquired in the future, or owned in the past. These and other risks related to environmental matters are described in more detail in Item 1A. Risk Factors.

Corporate Responsibility

Corporate responsibility is an important part of our business. As with all other aspects of our business, our corporate responsibility program focuses on continuous improvement, to the benefit of our stockholders, our residents, our teammates, our communities, and the environment.

Prior to the Plan of Sale and Liquidation, we published a Corporate Responsibility Report reflecting our corporate responsibility priorities and performance on an annual basis.

Human Capital and Culture

We believe our most valuable asset is our human capital. Our success is reliant on the collective sum of individual talents. We seek to engage a highly qualified workforce in compliance with applicable federal and other laws and regulations.

We continuously invest in our teammates and company culture to ensure employee satisfaction, health, and well-being.

We offer benefits and support reinforcing our emphasis on the health and well-being of our teammates, including 16 weeks of paid time for parental leave to new mothers and fathers, a longstanding policy of workplace flexibility for our teammates to attend to personal and family matters during the workweek, office environments focused on natural light and ergonomic office furniture including adjustable height desks, access to Company-provided healthy snacks and drinks, paid time annually to volunteer in local communities, and a bonus structure at all levels of the organization.

Prior to the Plan of Sale and Liquidation, we evaluated team engagement and retention and included those in our goals on which all teammates were compensated. Every teammate was surveyed annually via a third-party confidential survey. Our overall team engagement score for the 2025 annual engagement survey was 4.50, with a 100% overall response rate, compared to the target score of 4.00. The 2025 teammate engagement score consisted of the average of the responses to the questions that comprised the engagement index, on a scale of 1 to 5.

We have implemented and communicated severance policies in order to retain employees throughout the execution of the Plan of Sale and Liquidation.

As of December 31, 2025, we had 50 full-time teammates performing asset management, development or transactional services and managing corporate and area functions. None of our employees are represented by labor unions.

In 2025, we were recognized with Healthiest Employers Awards in South Florida, Washington, D.C., and Denver, ranking #1 in our category for Colorado and #2 in our category for South Florida and Washington, D.C. The Healthiest Employers Awards honor companies with policies and initiatives promoting the health and well-being of their employees. Healthiest Employers takes a holistic view of worksite health, evaluating the extent of leadership team buy-in, including how well they understand the needs of the employee population and how they proactively support well-being.

Available Information

Our combined Annual Report on Form 10-K, our combined Quarterly Reports on Form 10-Q, Current Reports on Form 8-K filed by Aimco or Aimco Operating Partnership, and any amendments to any of those reports that we file with the SEC are available free of charge as soon as reasonably practicable after filing through our website at www.aimco.com. The information contained on our website is not incorporated into this Annual Report.

Our expectation is that in the course of winding up, the Company will discontinue its website. In the event that the website is inaccessible, we will provide paper copies of our most recent annual report on Form 10-K, the most recent quarterly report on form 10-Q, current reports filed or furnished on Form 8-K, and all related amendments, excluding exhibits, free of charge upon request. The SEC maintains an internet website at www.sec.gov that contains reports, proxy and information statements, and other information regarding issuers, including the Company, that file electronically with the SEC.

ITEM 1A. RISK FACTORS

The risk factors noted in this section, and other factors noted throughout this Annual Report, describe certain risks and uncertainties that could cause our actual results to differ materially from those contained in any forward-looking statement. In addition, as a result of the adoption of the Plan of Sale and Liquidation on February 6, 2026, we are subject to additional risks that may affect the ultimate amount and timing of liquidating distributions to holders of our Common Stock.

SUMMARY RISK FACTORS

RISKS RELATED TO BUSINESS

RISKS RELATED TO THE PLAN OF SALE AND LIQUIDATION

RISKS RELATED TO OUR INDEBTEDNESS AND FINANCING

RISKS RELATED TO TAX LAWS AND REGULATIONS

RISKS RELATED TO AIMCO OPERATING PARTNERSHIP UNITS

RISKS RELATED TO BUSINESS

Adverse economic and geopolitical conditions, health crises and dislocations in the financial and credit markets could affect our ability to collect rents and late fees from tenants, and our ability to evict tenants, in addition to having other negative effects on our business, which in turn could adversely affect our financial condition and results of operations, and could also adversely affect the Plan of Sale and Liquidation.

Adverse economic and geopolitical conditions, local, regional, national, or international health crises and dislocations in the credit markets could negatively impact our tenants and our operations. The occurrence of regional epidemics or a global pandemic, may adversely affect our operations, financial condition, and results of operations. These conditions also may add uncertainty to operations and may cause supply chain disruptions.

The effects of a health crisis, adverse economic or geopolitical events or dislocation in the financial and credit markets have negatively impacted or would negatively impact our operations or those of entities in which we hold a partial interest, including:

Given the nature of the effects of a potential epidemic, pandemic, or other health crisis, it remains challenging to predict the ultimate impact of such events on the global economy, our residents and commercial tenants, our communities, and the operations of entities in which we hold an interest. Such events, depending on their nature, duration, and intensity, could have a material adverse effect on our operating results and financial condition. An epidemic, pandemic, or other health crisis also may have the effect of heightening many of the other risks described below.

Development and construction risks could affect our profitability, which could also adversely affect the Plan of Sale and Liquidation.

Development is subject to numerous risks, including the following:

Some of these development risks may be heightened given current uncertain and potentially volatile market conditions. If market volatility causes economic conditions to remain unpredictable or to trend downwards, we may not achieve our expected returns on properties under development and we could lose some or all of our investments in those properties. In addition, the lead time required to develop, construct, and lease-up a development property may increase.

In addition, we may serve as either the construction manager or the general contractor for our development projects. The construction of real estate projects entails unique risks, including risks that the project will fail to conform to building plans, specifications, and timetables. These failures could be caused by labor strikes, weather, government regulations, and other conditions beyond our control. In addition, we may become liable for injuries and accidents occurring during the construction process that are underinsured.

The risks described above could adversely affect the Plan of Sale and Liquidation, including by causing the aggregate amount of liquidating distributions to be less than our estimate.

Failure to generate sufficient net operating income may adversely affect our liquidity, limit our ability to fund necessary capital expenditures, or adversely affect our ability to pay liquidating distributions in the Plan of Sale and Liquidation.

Our ability to fund necessary capital expenditures on our communities and make payments to our investors depends on, among other things, our ability to generate net operating income in excess of required debt payments and our ability to collect on interest and principal payments due to us. If we are unable to fund capital expenditures on our communities, we may not be able to preserve the competitiveness of our communities, which could adversely affect their net operating income and value.

Our net operating income and liquidity may be adversely affected by events or conditions beyond our control, including:

Our business and financial results could be adversely affected by significant inflation, higher interest rates or deflation, which could also adversely affect the Plan of Sale and Liquidation.

Inflation can adversely affect us by increasing costs of land, materials and labor. In addition, significant inflation is often accompanied by higher interest rates, which have a negative impact on housing affordability. Rising interest rates increase the borrowing costs on new debt and could affect fair value of our investments. In an inflationary environment, our cost of capital, labor and materials can increase and the purchasing power of our cash resources can decline, which can have an adverse impact on our business or financial results.

Alternatively, a significant period of deflation could cause a decrease in overall spending and borrowing levels. This could lead to deterioration in economic conditions, including an increase in the rate of unemployment. Deflation could also cause the value of our real estate to decline. These, or other factors related to deflation, could have a negative impact on our business or

financial results and on our ability to successfully market and/or sell our remaining assets on the terms and timeline anticipated as part of the Plan of Sale and Liquidation.

Our properties are geographically concentrated in Florida, Chicago, the Washington, D.C. Metro Area, and in the Northeast region of the United States, which makes us more susceptible to regional and local adverse economic and other conditions than if we owned a more geographically diversified portfolio.

The majority of our properties are located in Florida, Chicago, the Washington, D.C. Metro Area, and in the Northeast region of the United States. As a result, we are particularly susceptible to adverse economic or other conditions in these markets (such as periods of economic slowdown or recession, business layoffs or downsizing, industry slowdowns, relocations of businesses, increases in real estate and other taxes, and the cost of complying with governmental regulations or increased regulation), as well as to natural disasters (including earthquakes, storms, and hurricanes), potentially adverse effects of “global warming,” and other disruptions that occur in these markets (such as terrorist activity or threats of terrorist activity and other events), any of which may have a greater impact on the value of our assets or on our operating results than if we owned a more geographically diversified portfolio.

We cannot assure you that these markets will grow or that underlying real estate fundamentals will be favorable to owners, operators, and developers of multifamily, retail, or office assets, or future development assets. Our operations may also be affected if competing assets are built in these markets. Moreover, submarkets within our core markets may be dependent upon a limited number of industries. Any adverse economic or other conditions, or any decrease in demand for office, multifamily, or retail assets could adversely impact our financial condition and results of operations.

Our development projects may subject us to certain liabilities, and we are subject to risks associated with developing properties in partnership with others, which could also adversely affect the Plan of Sale and Liquidation.

We may hire and supervise third-party contractors to provide construction, engineering, and various other services for development projects. Certain of these contracts may be structured such that we are the principal rather than the agent. As a result, we may assume liabilities in the course of the project and be subjected to, or become liable for, claims for construction defects, negligent performance of work or other similar actions by third parties we have engaged.

Adverse outcomes of disputes or litigation could negatively impact our business, results of operations, and financial condition, particularly if we have not limited the extent of the damages for which we may be liable, or if our liabilities exceed the amounts of the insurance that we carry. Moreover, our tenants may seek to hold us accountable for the actions of contractors because of our role even if we have technically disclaimed liability as a legal matter, in which case we may determine it necessary to participate in a financial settlement for purposes of preserving the tenant or customer relationship or to protect our corporate brand. To the extent our tenants are obligated to reimburse us, acting as a principal may also mean that we pay a contractor before we have been reimbursed by our tenants. This exposes us to additional risks of collection in the event of a bankruptcy, insolvency, or a condominium purchaser default. The reverse can occur as well, where a contractor we have paid files for bankruptcy protection or commits fraud with the funds before completing a project that we have funded in part or in full.

Additionally, we use partnerships and limited liability companies to develop some of our real estate investments. Acting through our wholly-owned subsidiaries, we typically will be the general partner or managing member in these partnerships or limited liability companies. There are, however, instances in which we may not control or even participate in management or day-to-day operations of these properties. The use of partnerships and limited liability companies involves special risks associated with the possibility that:

In the event any of our partners or members file for bankruptcy, we could be precluded from taking certain actions affecting our project without bankruptcy court approval, which could diminish our control over the project even if we were the general partner or managing member. In addition, if the bankruptcy court were to discharge the obligations of our partner or member, it could result in our ultimate liability for the project being greater than originally anticipated.

Further, disputes between us and a partner may result in litigation or arbitration that may increase our expenses and prevent our management from focusing their time and attention on our business and on our Plan of Sale and Liquidation. In the event that

our limited partner's required return on their preferred investment is not met at the time of sale of our joint venture, we may be required to reimburse the minimum amount due to them upon sale.

To the extent we are a general partner, we may be exposed to unlimited liability, which may exceed our investment or equity in the partnership. If one of our subsidiaries is a general partner of a particular partnership, it may be exposed to the same kind of unlimited liability.

The risks described above could adversely affect the Plan of Sale and Liquidation, including by causing the aggregate amount of liquidating distributions to be less than our estimate.

Government regulations and legal challenges may delay the start or completion of the development of our communities, increase our expenses or limit our building of apartments or other activities.

Various local, state, and federal statutes, ordinances, rules, and regulations concerning building, health and safety, site and building design, environment, zoning, sales, and similar matters apply to or affect the real estate development industry. In addition, our ability to obtain or renew permits or approvals and the continued effectiveness of permits already granted or approvals already obtained depends on factors beyond our control, such as changes in federal, state, and local policies, rules and regulations, and their interpretations and application.

Municipalities may restrict or place moratoriums on the availability of utilities, such as water and sewer taps. If municipalities in which we operate take such actions, it could have an adverse effect on our business by causing delays, increasing our costs, or limiting our ability to operate in those municipalities.

In addition, there is a variety of legislation being enacted, or considered for enactment, at the federal, state, and local level relating to energy and climate change. This legislation relates to items such as carbon dioxide emissions control and building codes that impose energy efficiency standards. New building code requirements that impose stricter energy efficiency standards could significantly increase our cost to construct buildings. Such environmental laws may affect, for example, how we manage storm water runoff, wastewater discharges, and dust; how we develop or operate properties on or affecting resources such as wetlands, endangered species, cultural resources, or areas subject to preservation laws; and how we address contamination. As climate change concerns continue to grow, legislation and regulations of this nature are expected to continue and increase costs of compliance. In addition, it is possible that some form of expanded energy efficiency legislation may be passed by the U.S. Congress or federal agencies and certain state legislatures, which may, despite being phased in over time, significantly increase our costs of building apartment communities and the sale price to our buyers and adversely affect our sales volumes. We may be required to apply for additional approvals or modify our existing approvals because of changes in local circumstances or applicable law.

Energy-related initiatives affect a wide variety of companies throughout the United States and the world and, because our operations are heavily dependent on significant amounts of raw materials, such as lumber, steel, and concrete, they could have an indirect adverse impact on our operations and profitability to the extent the manufacturers and suppliers of our materials are burdened with expensive cap and trade and similar energy-related taxes and regulations. Our noncompliance with environmental laws could result in fines and penalties, obligations to remediate, permit revocations, other sanctions and reputational harm. In addition, regulations and other expectations related to environmental matters and climate change are not uniform, and may be inconsistently interpreted or applied, which can increase the complexity and costs of compliance as well as any associated litigation or enforcement risks.

Governmental regulation affects not only construction activities but also sales activities, mortgage lending activities, and other dealings with consumers. Further, government agencies routinely initiate audits, reviews, or investigations of our business practices to ensure compliance with applicable laws and regulations, which can cause us to incur costs or create other disruptions in our business that can be significant. Further, we may experience delays and increased expenses as a result of legal challenges to our proposed communities, whether brought by governmental authorities or private parties.

Competition could limit our ability to lease apartment homes, increase or maintain rents, execute our development strategy, or dispose of our assets as part of the Plan of Sale and Liquidation.

Our apartment communities compete for residents with other housing alternatives, including other rental apartments and condominiums, and, to a lesser degree, single-family homes that are available for rent, as well as new and existing condominiums and single-family homes for sale. Competitive residential housing, as well as the lack of household formation and job creation in a particular area, could adversely affect our ability to lease apartment homes and to increase or maintain rental rates.

In addition, there are many developers, managers, and owners of apartment real estate and underdeveloped land, as well as REITs, private real estate companies, and investors, that compete with us, some of whom have greater financial resources and

market share than us. If our competitors prevent us from realizing our real estate development objectives, our performance may fall short of our expectations and adversely affect our business.

We also face competition with respect to the disposition of our assets through the Plan of Sale and Liquidation. Our ability to compete with available investment alternatives may be affected by, among other things, national and local economic trends, availability and cost of capital, construction and renovation costs, existing laws and regulations, new legislation and population trends.

Because real estate investments are relatively illiquid, we may not be able to sell apartment communities or other assets when appropriate, including as part of the Plan of Sale and Liquidation.

Real estate investments are relatively illiquid and generally cannot be sold quickly. Thus, we may not be able to sell apartment communities or other assets promptly in response to changes in economic or other market conditions. Our ability to dispose of apartment communities in the future, including dispositions made as part of the Plan of Sale and Liquidation, will depend on prevailing economic and market conditions, including the cost and availability of financing. This could have a material adverse effect on our financial condition or results of operations.

Climate change may adversely affect our business.

To the extent that significant changes in the climate occur in areas where our properties are located, we may experience extreme weather and changes in precipitation and temperature, all of which may result in physical damage to or a decrease in demand for properties located in these areas or affected by these conditions. Climate change may also have indirect effects on our business by increasing the costs of (or making unavailable) insurance on favorable terms, or at all, or requiring us to spend funds to repair and protect our properties against such risks. Should the impact of climate change be material in nature, including significant property damage to or destruction of our properties, or occur for lengthy periods of time, our financial condition or results of operations may be adversely affected. In addition, changes in federal, state and local legislation and regulations based on concerns about climate change could result in increased capital expenditures on our properties (for example, to improve their energy efficiency and/or resistance to inclement weather) without a corresponding increase in revenue, resulting in adverse impacts to our net income.

Potential liability or other expenditures associated with potential environmental contamination may be costly.

Various federal, state, and local laws subject real estate owners or operators to liability for management, and the costs of removal or remediation of certain potentially hazardous materials that may be present in the land or buildings. Potentially hazardous materials may include polychlorinated biphenyls, petroleum-based fuels, lead-based paint, or asbestos, among other materials. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the presence of such materials. The presence of, or the failure to manage or remediate properly, these materials may adversely affect occupancy at such real estate as well as the ability to sell or finance such real estate. In addition, governmental agencies may bring claims for costs associated with investigation and remediation actions, damages to natural resources, and for potential fines or penalties in connection with such damage or with respect to the improper management of hazardous materials. Moreover, private plaintiffs may potentially make claims for investigation and remediation costs they incur, or personal injury, disease, disability, or other infirmities related to the alleged presence of hazardous materials at an apartment community. In addition to potential environmental liabilities or costs associated with our current real estate, we may also be responsible for such liabilities or costs associated with real estate we no longer own or operate.

Rent control laws, if enacted, could limit our ability to increase rental rates may negatively impact our rental income and profitability.

State and local governmental agencies may introduce rent control laws or other regulations that limit our ability to increase rental rates, which may affect our rental income. Especially in times of recession and economic slowdown, rent control initiatives can acquire significant political support. If rent controls unexpectedly became applicable to certain of our properties, our revenue from and the value of such properties could be adversely affected, which could negatively affect our ability to successfully market and/or sell our remaining assets on the terms and timeline anticipated as part of the Plan of Sale and Liquidation.

Laws benefiting disabled persons may result in our incurrence of unanticipated expenses.

Under the Americans with Disabilities Act of 1990 (“ADA”), all places intended to be used by the public are required to meet certain federal requirements related to access and use by disabled persons. The Fair Housing Amendments Act of 1988 (“FHAA”) requires apartment communities first occupied after March 13, 1991, to comply with design and construction requirements for disabled access. For those apartment communities receiving federal funds, the Rehabilitation Act of 1973 also has requirements regarding disabled access. These and federal, state, and local laws may require structural modifications to our apartment communities or changes in policy/practice or affect renovations of the communities. Noncompliance with these laws could result in the imposition of fines or an award of damages to private litigants and also could result in an order to correct any non-complying feature, which could result in substantial capital expenditures. Although we believe that our apartment communities are substantially in compliance with present requirements, we may incur unanticipated expenses to comply with the ADA, the FHAA, and the Rehabilitation Act of 1973 in connection with the ongoing operation of our apartment communities.

Moisture infiltration and resulting mold remediation may be costly.

Although we are proactively engaged in managing moisture intrusion and preventing the presence of mold at our apartment communities, it is not unusual for periodic moisture intrusion to cause mold in isolated locations within an apartment community. We have implemented policies, procedures, and training, and include a detailed moisture intrusion and mold assessment during acquisition due diligence. We believe these measures will manage mold exposure at our apartment communities and will minimize the effects that mold may have on our residents. To date, we have not incurred any material costs or liabilities relating to claims of mold exposure or to abate mold conditions.

Although we are insured for certain risks, the cost of insurance, increased claims activity, or losses resulting from casualty events may affect our financial condition and results of operations, which could also adversely affect the Plan of Sale and Liquidation.

We are insured for a portion of our real estate assets’ exposure to casualty losses resulting from fire, earthquake, hurricane, tornado, flood, and other perils, which insurance is subject to deductibles and self-insurance retention. We recognize casualty losses or gains based on the net book value of the affected asset and the amount of any related insurance proceeds. In many instances, the actual cost to repair or replace the apartment community may exceed its net book value and any insurance proceeds. We recognize the uninsured portion of losses as casualty losses in the periods in which they are incurred. In addition, we are self-insured for a portion of our exposure to third-party claims related to our workers’ compensation coverage and general liability exposure. With respect to our exposure to claims of third parties, we establish reserves at levels that reflect our known and estimated losses. The ultimate cost of losses and the impact of unforeseen events may vary materially from recorded reserves, and variances may adversely affect our operating results and financial condition. We purchase insurance to reduce our exposure to losses and limit our financial losses on large individual risks. The availability and cost of insurance are determined by market conditions outside our control. No assurance can be made that we will be able to obtain and maintain insurance at the same levels and on the same terms as we do today. If we are not able to obtain or maintain insurance in amounts we consider appropriate for our business, or if the cost of obtaining such insurance increases materially, we may have to retain a larger portion of the potential loss associated with our exposures to risks, which could cause the aggregate amount of liquidating distributions to be less than our estimate.

Natural disasters and severe weather may affect our financial condition and results of operations, which could also adversely affect the Plan of Sale and Liquidation.

Natural disasters such as earthquakes and severe weather such as hurricanes may result in significant damage to our real estate assets and may adversely affect our ability to market and/or sell those assets as part of the Plan of Sale and Liquidation. The extent of our casualty losses and loss in operating income in connection with such events is a function of the severity of the event and the total amount of exposure in the affected area. When we have geographic concentration of exposures, a single catastrophe (such as an earthquake) or destructive weather event (such as a hurricane) affecting a region may have a significant adverse effect on our financial condition and results of operations. We cannot accurately predict natural disasters or severe weather, or the number and type of such events that will affect us. As a result, our operating and financial results may vary significantly from one period to the next. Although we anticipate and plan for losses, there can be no assurance that our financial results will not be adversely affected by our exposure to losses arising from natural disasters or severe weather in the future that exceed our previous experience and assumptions.

We depend on our senior management.

Our success depends, in large part, upon the efforts of our senior management team, who have extensive market knowledge and relationships, and exercise substantial influence over our operational, financing, and disposition activity. The loss of services of one or more members of our senior management team during the pendency of the Plan of Sale and Liquidation, or our inability to retain similarly qualified personnel, could adversely affect our business and weaken our relationships with lenders, business partners, existing and prospective tenants, and industry participants, which could adversely affect our financial condition, results of operations, and cash flow.

We rely on our property managers to manage our properties. If our property managers fail to efficiently manage our properties, tenants may not renew their leases, or we may become subject to unforeseen liabilities, which could also adversely affect the Plan of Sale and Liquidation.

Our properties are managed by third parties. We do not supervise our third-party property managers or their employees on a day-to-day basis and we cannot assure you that they will manage such properties in a manner that is consistent with their obligations under our agreements, that they will not be negligent in their performance or engage in any criminal or fraudulent activity, or that they will not otherwise default on their management obligations to us. If any of the foregoing occurs, the relationships with our tenants at such properties could be damaged, which may cause the tenants not to renew their leases, and we could incur liabilities resulting from loss or injury to the properties or to persons at the properties. If we are unable to lease the properties or we become subject to significant liabilities as a result of our third-party property managers’ management performance, our financial condition and results of operations could be substantially harmed, and/or our ability to successfully market and/or sell our remaining assets on the terms and timeline anticipated as part of the Plan of Sale and Liquidation could be negatively affected.

Our business and operations would suffer in the event of significant disruptions or cyberattacks of our information technology systems or our failure to comply with laws, rules and regulations related to privacy and data protection, which could also adversely affect the Plan of Sale and Liquidation.

Information technology, communication networks, and related systems (“IT Systems”), including systems maintained by third-party vendors with which we do business are essential to the operation of our business. We use these systems to manage our vendor relationships, internal communications, accounting and record-keeping systems, and many other key aspects of our business. Our operations rely on the secure processing, storage, and transmission of confidential, personal and other information (“Confidential Information”) in our computer systems and networks, which also depend on the strength of our procedures and the effectiveness of our internal controls. We own and manage some of these IT Systems, but also rely on third parties for a range of IT Systems and related products and services, including but not limited to cloud computing services. Information security risks have generally increased in recent years due to the rise in new technologies and the increased sophistication and activities of perpetrators of cyberattacks.

We face numerous and evolving risks associated with energy blackouts, natural disasters, terrorism, war, telecommunication failures, and evolving cybersecurity risks that threaten the confidentiality, integrity and availability of our IT Systems. The risk of a cyber incident has generally increased as the number, intensity and sophistication of attempted attacks have increased globally, including by computer hackers, foreign governments, information service interruptions and cyber terrorists, opportunistic hackers and hacktivists, as well as through diverse attack vectors, such as social engineering/phishing, malware (including ransomware), malfeasance by insiders, human or technological error, and as a result of bugs, misconfigurations or exploited vulnerabilities in software or hardware. Techniques used in cyber incidents evolve frequently, may originate from less regulated and remote areas of the world and be difficult to detect and may not be recognized until launched against a target. Accordingly, we may be unable to anticipate these techniques or to implement adequate security barriers or other preventative measures, making it impossible for us to entirely eliminate this risk. Because we make use of third-party suppliers and service providers that support our internal- and external-facing operations, successful cyberattacks that disrupt or result in unauthorized access to third party IT Systems can materially impact our operations and financial results. Aimco Predecessor and our third-party vendors have been impacted by security incidents in the past and we and our third-party vendors will likely continue to experience security incidents of varying degrees. For example, unauthorized parties, whether within or outside the Company, may disrupt or gain access to our IT Systems, or those of third parties with whom we do business, through human error, misfeasance, fraud, trickery, or other forms of deceit, including break-ins, use of stolen credentials, social engineering, phishing, computer viruses or other malicious codes, and similar means of unauthorized and destructive tampering. While we do not believe that past incidents have had a material impact to date, as our reliance on technology increases, so do the risks of a security incident. The occurrence of any of the foregoing risks could have a material adverse effect on us.

We may also incur additional costs to remedy damages caused by such disruptions. There can be no assurance that our security efforts and measures will be fully implemented, complied with or effective or that attempted security breaches or disruptions would not be successful or damaging. Any compromise of our security could also result in a violation of applicable privacy and other laws, significant legal and financial exposure, damage to our reputation, loss, or misuse of the Confidential Information, and a loss of confidence in our security measures, which could harm our business, operating results, and financial condition. We also cannot guarantee that any costs and liabilities incurred in relation to an attack or incident will be covered by our existing insurance policies or that applicable insurance will be available to us in the future on economically reasonable terms or at all.

The risks described above could adversely affect the Plan of Sale and Liquidation, including by causing the aggregate amount of liquidating distributions to be less than our estimate.

Compliance with ever evolving federal and state laws relating to the handling of information about individuals involves significant expenditure and resources, and any failure by us or our vendors to comply may result in significant liability, negative publicity, and/or an erosion of trust, which could materially adversely affect our business, results of operations, and financial condition, as well as the Plan of Sale and Liquidation.

We receive, store, handle, transmit, use and otherwise process business information and information related to individuals, including from and about actual and prospective tenants, as well as our employees and service providers. We also depend on a number of third-party vendors in relation to the operation of our business, a number of which we rely on to process personal data on our behalf. While we may not be responsible for the compliance with certain laws, failure by such third parties to comply with those laws could result in harm to our reputation and brand and require us to expend significant resources.

We and our vendors are subject to a variety of federal and state data privacy laws, rules, regulations, industry standards and other requirements, including those that apply generally to the handling of information about individuals, and those that are specific to certain industries, sectors, contexts, or locations. These requirements, and their application, interpretation and amendment are constantly evolving and developing.

We also are subject to laws, rules, and regulations in the United States, such as the California Consumer Protection Act (the “CCPA” (which became effective on January 1, 2020 and is amended by the California Privacy Rights Act)), relating to the collection, use, disclosure and security of employee and business contact data. For other personal data, including tenant, we rely on our third-party partners to store and process such data. Among other things, the CCPA: requires disclosures to such residents about the data collection, use and disclosure practices of covered businesses; provides such individuals expanded rights to access, delete, and correct their personal information, and opt-out of certain sales or transfers of personal information; and provides such individuals with a private right of action and statutory damages for certain data breaches. The enactment of the CCPA is prompting a wave of similar legislative developments in other states in the United States, which creates the potential for a patchwork of overlapping but different state laws. Evolving compliance and operational requirements under the CCPA and the privacy and data security laws of other jurisdictions in which we operate impose significant costs that are likely to increase over

time. Our failure, or the failure of third-party partners we rely on to process data, to comply with laws, rules, and regulations related to privacy and data protection could harm our business or reputation.

Additionally, we rely on third-party property managers to run background checks on prospective tenants. Those third-party managers are considered “users” of consumer reports provided by consumer reporting agencies (“CRAs”) under the Fair Credit Reporting Act, as amended by the Fair and Accurate Credit Transactions Act (collectively, “FCRA”). FCRA regulates and protects consumer information and, among other things, imposes specific obligations “users” of consumer reports. Such obligations include notifying consumers when such reports are used to make an adverse decision, and, in the context of completing employee background checks, providing a notice containing certain disclosures to the consumer and obtaining their consent. Noncompliance with the FCRA can lead to civil and even criminal penalties, and it permits consumers to bring a private right of action if they are unsatisfied with the dispute resolution process.

Further, laws, regulations, and standards covering marketing, advertising, and other activities conducted by telephone, email, mobile devices, and the internet may be or become applicable to our business, such as the Telephone Consumer Protection Act (the “TCPA”), the Controlling the Assault of Non-Solicited Pornography and Marketing Act of 2003 (the “CAN-SPAM Act”), and similar state consumer protection and communication privacy laws, such as California’s Invasion of Privacy Act.

Third-party property managers send short message service, or SMS, text messages to tenants. The actual or perceived improper sending of such text messages may subject us to potential risks, including liabilities or claims relating to consumer protection laws such as the TCPA. Numerous class-action suits under federal and state laws have been filed in recent years against companies who conduct telemarketing and/or SMS texting programs, with many resulting in multi-million-dollar settlements to the plaintiffs. Any future such litigation against us could be costly and time-consuming to defend. In particular, the TCPA imposes significant restrictions on the ability to make telephone calls or send text messages to mobile telephone numbers without the prior consent of the person being contacted. Federal or state regulatory authorities or private litigants may claim that the notices and disclosures we provide, form of consents we obtain or our SMS texting practices are not adequate or violate applicable law. This may in the future result in civil claims against us. Claims that we have violated the TCPA could be costly to litigate, whether or not they have merit, and could expose us to substantial statutory damages or costly settlements.

Third-party property managers send marketing messages via email and are subject to the CAN-SPAM Act. The CAN-SPAM Act imposes certain obligations regarding the content of emails and providing opt-outs (with the corresponding requirement to honor such opt-outs promptly). While we strive to ensure that all of our marketing communications comply with the requirements set forth in the CAN-SPAM Act, any violations could result in the FTC seeking civil penalties against us.

Moreover, as our third-party property managers accept debit and credit cards for payment, they are subject to the Payment Card Industry Data Security Standard (“PCI-DSS”), issued by the Payment Card Industry Security Standards Council. PCI-DSS contains compliance guidelines with regard to our security surrounding the physical and electronic storage, processing and transmission of cardholder data. If our third-party property managers or other service providers are unable to comply with the security standards established by banks and the payment card industry, we may be subject to fines, restrictions and expulsion from card acceptance programs, which could materially and adversely affect our business.

Any failure or perceived failure by us to comply with data privacy laws, rules, regulations, industry standards and other requirements could result in proceedings or actions against us by individuals, consumer rights groups, government agencies, or others. We could incur significant costs in investigating and defending such claims and, if found liable, pay significant damages or fines or be required to make changes to our business. Further, these proceedings and any subsequent adverse outcomes may subject us to significant negative publicity and an erosion of trust. If any of these events were to occur, our business, results of

operations, and financial condition could be materially adversely affected.

The risks described above could adversely affect the Plan of Sale and Liquidation, including by causing the aggregate amount of liquidating distributions to be less than our estimate.

We do not have control over the operations of our alternative and equity method investments, which could adversely affect our financial condition and results of operations.

Our interests in alternative investments consist of the mezzanine loan to the partnership owning the Parkmerced Apartments (the “Mezzanine Investment”), as well as our investments in IQHQ and real estate technology funds. Our equity method investments include ownership interests in unconsolidated real estate partnerships that own four operating properties and one land parcel held for development. These investments are subject to certain risks, including, but not limited to, exposure to the skill and capital of the controlling party, local market conditions, increases in construction financing costs (when applicable), and occupancy rates.

In 2023, we recognized non-cash impairment charges on our Mezzanine Investment of $158.0 million. The carrying value of the Mezzanine Investment was zero as of December 31, 2025 and 2024. While we have impaired and written down the carrying value of the Mezzanine Investment to zero and the mezzanine loan is in maturity default, the risk remains that all or a portion of the loan will not be repaid.

In 2025 and 2024, we recognized non-cash impairment charges of $6.6 million and $48.6 million, respectively on our passive equity investment in IQHQ reducing the carrying value to $4.5 million and $11.1 million as of December 31, 2025 and 2024, respectively.

There can be no assurances that we will not take additional charges in the future related to the impairment of our alternative and equity method investments. Any future impairment could have a material adverse effect on our financial condition and results of operations, and/or could cause the aggregate amount of liquidating distributions to be less than our estimate.

There may be, or there may be the appearance of, conflicts of interest in our relationship with AIR.

There may be, or there may be the appearance of, conflicts of interest in our relationship with AIR. The Separation was designed to minimize conflicts of interest between us and AIR, and the volume of transactions with AIR has significantly decreased since the Separation. While AIR is not a related party, there can be no assurance that such conflicts, or appearance of conflicts, do not exist.

Actual, potential, or perceived conflicts could give rise to investor dissatisfaction, settlements with stockholders, litigation or regulatory inquiries or enforcement actions. Appropriately dealing with conflicts of interest is complex and difficult, and our reputation could be damaged if we fail, or appear to fail, to deal appropriately with one or more potential, actual, or perceived conflicts of interest. Regulatory scrutiny of, or litigation in connection with, conflicts of interest could have a material adverse impact on our reputation, which could materially adversely affect our business in a number of ways, including causing a reluctance of counterparties to do business with us, a decrease in the prices of our equity securities, and a resulting increased risk of litigation and regulatory enforcement actions.

Our business could be negatively affected as a result of the actions of activist stockholders.

Publicly traded companies have increasingly become subject to campaigns by investors advocating corporate actions such as financial restructuring, increased borrowing, special dividends, stock repurchases, or sales of assets or the entire company. We have been subject to stockholder activism in the past and given our stockholder composition, the Plan of Sale and Liquidation, and other factors, it is possible our stockholders or future activist stockholders may attempt to effect such changes in the future. Responding to proxy contests and other actions by such activist stockholders or others would be costly and time-consuming, disrupt our operations and divert the attention of our Board and senior management team from the pursuit of business strategies, which could adversely affect our results of operations and financial condition. Additionally, perceived uncertainties as to our future direction as a result of stockholder activism or changes to the composition of our Board may lead to the perception of a change in the direction of the business, instability, or lack of continuity, which may be exploited by our competitors, cause concern to our current or potential lenders, partners, or others with whom we do business, and make it more difficult to attract and retain qualified personnel.

RISKS RELATED TO THE PLAN OF SALE AND LIQUIDATION

The announcement and pendency of the proposed Plan of Sale and Liquidation present certain risks to our ongoing business and operations.

The Company is aiming to complete the sales of the remaining assets of the Company and its subsidiaries, (“Remaining Company Assets”) within 24 months after stockholder adoption of the Plan of Sale and Liquidation. Because the sales of the Remaining Company Assets are subject to, among other things, completion of the marketing and sale process, negotiation of sale terms and completion of the sales, the exact timing of completing the Plan of Sale and Liquidation cannot be determined at this time.

Prior to the completion of the sales of all the Remaining Company Assets, as well as the wind-down of the Company’s business and affairs, and termination of the Company’s existence in accordance with the Plan of Sale and Liquidation, the Plan of Sale and Liquidation presents certain risks to our business and operations, which could materially and adversely affect our business, financial results and share price, including, among other things, that:

Additionally, prior to completing the sales of all of the Remaining Company Assets, we will remain subject to all of the risks of operating our properties, including those described elsewhere in this section, the risk that the cash flow and net working capital generated from the Company’s operations prior to completing the wind-down of the Company’s business and affairs and termination of the Company’s existence may be lower than we anticipate, and the risks and the costs associated with remaining a public company. In addition, such risks may result in our incurring additional obligations and liabilities which may be retained by us following the sales of the Remaining Company Assets and, in such event, could reduce the amounts ultimately available for distribution to our stockholders.

We cannot determine at this time the specific amount or exact timing of distributions to our stockholders in connection with the Plan of Sale and Liquidation, other than those previously declared, because there are many factors, some of which are not within our control, that could affect the amount or timing of any such distributions.

Although we have previously disclosed an estimated range for the total amount of stockholder distributions that we may make in connection with the Plan of Sale and Liquidation (the “Total Estimated Liquidating Distributions”) of between $5.75 and $7.10 per share, and although we intend to make distributions during the liquidation process, including the liquidating distribution of $1.45 per share declared on February 9, 2026, the timing and amount of those distributions may vary based on a number of factors and there can be no assurances regarding the amounts of any stockholder distributions or the timing thereof. We may not be able to make any distributions, even if we sell all the Remaining Company Assets. As further described in our definitive proxy statement, filed with the SEC on January 2, 2026, our estimated range of Total Estimated Liquidating Distributions was estimated as of October 29, 2025, and does not take into account changes in economic conditions that have occurred since that time or may occur in the future and was derived, in part, from the estimated range of gross asset sales for the properties, less estimates for transaction costs, service costs and debt repayment amounts, general and administrative costs, including employee retention costs, capital expenditure requirements and REIT compliance costs, adjusted for the impact of estimated cash flow/net working capital resulting from the Company’s operations prior to completing the sale of all of our properties. These estimates may overstate the proceeds from asset sales or understate the actual expenses, which means actual distributions may be less than the estimated range. Other uncertainties that could cause the aggregate amount of liquidating distributions to be less than our estimate, or the timing of distributions to be delayed, in addition to other risks described elsewhere in this section, include the following:

In addition, the holders of the OP Units have the right, subject to the terms of Aimco Operating Partnership’s agreement, to require Aimco Operating Partnership to redeem all or a portion of such holder’s OP Units, as described further in the section titled “Risks Related to Aimco Operating Partnership Units,” which may result in such holders obtaining liquidity before holders of Common Stock and reduce the amount of cash available to make liquidating distributions to holders of Common Stock.

Any of these uncertainties could impact the amount and timing of the Total Estimated Liquidating Distributions.

Additionally, there can be no assurances regarding the amounts of our stockholders’ potential total return from receiving such distributions. A stockholder’s total return will depend on the amount paid for such stockholder’s Common Stock and the date on which such Common Stock was purchased. Stockholders should consult with a financial advisor for more information about their potential total return.

There can be no assurance that the sale of all of our assets as contemplated in the Plan of Sale and Liquidation will result in greater returns to you on your investment, within a reasonable period of time, than you would receive through other alternatives reasonably available to us.

If our stockholders approve the Plan of Sale and Liquidation, we will generally be focused on winding-down our operations, subject to the Board’s determination to amend or terminate the Plan of Sale and Liquidation if it determines that doing so is in the best interest of stockholders. This, among other factors, may adversely affect the value that a potential acquirer might place on the Company as a whole, or on any remaining assets of the Company. Once our assets are sold, you will no longer participate in any future earnings or growth of such assets or benefit from any increases in the value of such assets. It is possible that continuing with the status quo or pursuing one or more other strategic alternatives could result in greater returns on your investment over time. If the Plan of Sale and Liquidation becomes effective, we will be foregoing those alternative opportunities.

Our directors and executive officers may have interests in the Plan of Sale and Liquidation that are different from, or in addition to, the interests of our stockholders generally.

In considering the Board’s recommendations that you vote in favor of the three proposals to be voted on at the Special Meeting, you should be aware that our directors and executive officers have interests in the Plan of Sale and Liquidation that may be different from, or in addition to, the interests of our stockholders generally, including, among other interests, certain payments and benefits pursuant to the executive officer’s employment agreement or Aimco’s executive severance policy, as applicable, and potential accelerated vesting of the equity compensation awards our executive officers have received. The Board was aware of these interests and considered them in making its recommendations. The impact of the Plan of Sale and Liquidation on our directors and executive officers is described more fully below in “The Plan of Sale and Liquidation — Interests of Our Directors and Executive Officers”.

The Plan of Sale and Liquidation, and the actions and transactions effected pursuant thereto, may lead to stockholder litigation which could result in substantial costs and distract management.

Historically, extraordinary corporate actions such as the Plan of Sale and Liquidation, and the actions and transactions effected pursuant thereto, sometimes lead to securities and other class action lawsuits being filed against the company taking such actions, which can delay or prevent altogether the completion of such actions. We may become involved in this type of litigation as a result of the Plan of Sale and Liquidation. If such a lawsuit is filed against us, the litigation costs may be expensive, and, even if we ultimately prevail, the process will divert our attention from implementing the wind-down of the Company’s business and affairs and termination of the Company’s existence. If we were not to prevail in such a lawsuit, we cannot predict the amount of any damages for which we may be obligated and if any plaintiffs are successful in obtaining an injunction, it may prohibit us from conducting the wind-down and termination of the Company’s existence under the Plan of Sale and Liquidation. If applicable, any such damages may be significant, may have a material adverse effect on our financial condition and may reduce, eliminate or delay the amounts available for distribution to our stockholders.

The sales of our assets pursuant to the Plan of Sale and Liquidation will not be subject to further stockholder approval.

The Plan of Sale and Liquidation adopted by the Company’s stockholders gives the Board the authority to cause us to sell any and all of the Company’s assets on such terms and to such parties as the Board determines appropriate and in the best interest of our stockholders, even if such terms are less favorable than those assumed for the purpose of calculating the Total Estimated Liquidating Distributions. Notably, unless a stockholder vote is otherwise required under Maryland law, our stockholders will have no subsequent opportunity to vote on such matters and will, therefore, have no right to approve or disapprove the terms of such sales.

The Plan of Sale and Liquidation may not be completed.

The Plan of Sale and Liquidation authorizes us to engage in the wind-down of our business and affairs, discharging, paying or setting aside reserves for our liabilities, including contingent liabilities, disposing of our assets and distributing our remaining assets available for distribution to our stockholders (as determined by the Board in its discretion), establishing one or more reserve funds to satisfy known liabilities and liquidating expenses and estimated, unascertained or contingent liabilities and expenses. We have commenced marketing and sale activities with respect to many of the Remaining Company Assets with a view toward completing these sales within 24 months after stockholder adoption of the Plan of Sale and Liquidation. While the Plan of Sale and Liquidation authorizes the sale of the Remaining Company Assets, we cannot predict whether we will be able to do so by such date, or at all, or at prices or on terms and conditions consistent with our assumptions used in calculating the Total Estimated Liquidating Distributions or otherwise acceptable to us.

In addition, notwithstanding approval of the Plan of Sale and Liquidation by our stockholders, the Board may amend or terminate the Plan of Sale and Liquidation without stockholder approval at the Board’s discretion, at any time prior to the filing of Articles of Dissolution with the Maryland State Department of Assessments and Taxation, if it determines that doing so is in the best interest of the Company and our stockholders. Thus, the Board could decide to conduct our liquidation and termination of the Company’s existence differently than as currently planned, or not at all. If the Board amends, modifies or terminates the Plan of Sale and Liquidation, it may impact the timing and amount of the Total Estimated Liquidating Distributions, our share price, our results of operations and our on-going business.

Defaults under future sale agreements may delay or reduce liquidating distributions.

The closing of the transactions contemplated by the Plan of Sale and Liquidation will be subject to our entering into and consummating future sale agreements. If any of the transactions contemplated by these future sale agreements do not close because of a buyer default, failure of a closing condition or for any other reason, we may not be able to enter into a new agreement on a timely basis or on terms that are as favorable as the original sale agreement. Any delay in the completion of asset sales could delay our payment of liquidating distributions to our stockholders. We will also incur additional costs involved in locating a new buyer and negotiating a new sale agreement for the asset. These additional costs are not included in our range of Total Estimated Liquidating Distributions. Such defaults and the resulting additional costs may reduce the Total Estimated Liquidating Distributions to our stockholders.

Additional liabilities and obligations could arise during the liquidation process.

Following the sales of the Remaining Company Assets, we will retain liabilities that must be satisfied prior to any final distribution to our stockholders, and some of those liabilities are uncertain or unknown at this time. Significant time could be required to resolve some of these liabilities, including as a result of factors beyond our control, which could impact both the timing and the amount of any final distribution to our stockholders. Also, some liabilities may involve third-party disputes. If we have underestimated our existing obligations and liabilities, such as future litigation, or if unanticipated or contingent liabilities arise, the amount of distributions to our stockholders could be less than the amounts we have estimated or the timing could be delayed. For the foregoing reasons, among others, there can be no assurance as to the timing and amount of any final distributions to our stockholders.

If we are unable to find buyers for the assets of the Company and its subsidiaries on a timely basis or at our expected sales prices, our liquidating distributions may be delayed or reduced.

As of the date of this Annual Report, only the following of our Remaining Company Assets are subject to a binding sale agreement providing for their sale: Aimco’s portfolio of seven apartment properties located in the Chicago market; Plantation Gardens in Plantation, FL; Hillmeade in Nashville, TN; 118-122 West 23rd Street and 237-239 Ninth Avenue located in New York City; The Benson Hotel and Faculty Club located in Aurora, CO; and 1045 on the Park Apartment Homes located in Atlanta, Georgia. In estimating the range of Total Estimated Liquidating Distributions, we assumed that we will be able to find buyers for all of our assets at amounts based on our estimated range of gross real estate sales prices. However, we may have overestimated the sales prices that we will ultimately be able to obtain for these assets. For example, we may decide to sell groups of properties together, at a price that could be lower than the aggregate price we could get over a longer period of time if we sold each asset separately, in order to complete sales more quickly and reduce the risk of a lengthy liquidation process, or we could be required to lower our asking prices below the low end of our current estimate of one or more assets’ market value in order to find buyers in a timely manner. Additionally, the publicly disclosed plan to liquidate the Company, as well as our joint venture agreements and other contractual terms, may adversely affect the terms and conditions upon which we are able to sell the Remaining Company Assets.

Furthermore, investments in real properties are relatively illiquid and real estate sales prices are regularly changing and fluctuate with changes in general economic or local conditions, changes in interest rates or availability of mortgage funds that may render the sale of a property difficult or unattractive, supply and demand dynamics for similar or competing properties in an area, changes in tax, real estate, environmental and zoning laws and regulations, occupancy percentages, lease rates, competition, the availability of suitable buyers, operating performance and the perceived quality and dependability of income flows from tenancies, potential major repairs or other contingent liabilities associated with the assets and a number of other factors, both local and national. If we are not able to find buyers for these assets in a timely manner, or at all, or incur expenses for a longer period than anticipated, or if we have overestimated the sales prices we will receive, our liquidating distributions to our stockholders could be delayed or reduced accordingly and liquidating distributions may ultimately be lower than the prevailing market or trading price of our Common Stock prior to the sales of the Remaining Company Assets pursuant to the Plan of Sale and Liquidation.

Our ability to implement the Plan of Sale and Liquidation depends upon the participation of key personnel and there is no assurance such key personnel will remain in place.

Our ability to implement the Plan of Sale and Liquidation depends to a significant degree upon the contributions of key personnel to continue to maintain corporate operations while we complete the sales of the Remaining Company Assets and wind-down of our business and affairs, including the management of asset sales, maintaining financing arrangements and accounting services, preparing and filing all reports required to be filed by it with the SEC, the Internal Revenue Service (“IRS”) and other regulatory agencies, maintaining our REIT status (to the extent applicable) and maintaining our compliance with the Sarbanes-Oxley Act. The Company expects to continue, as appropriate, downsizing with a focus on retaining an appropriate level of personnel with the necessary skill set commensurate with the reduced size of the Company, including those executive officers and other key personnel necessary for the continued operation of the Remaining Company Assets and completion of the wind-down activities, which downsizing is expected to affect both officers and other employees. There can be no assurance that we will be able to retain or replace key personnel needed to successfully maintain operations while we implement the Plan of Sale and Liquidation. The loss of, or inability to retain or replace, key personnel could adversely impact our business and our ability to successfully implement the Plan of Sale and Liquidation and could result in delays.

We do not intend to declare or pay future regularly quarterly distributions.

We do not expect to pay regular quarterly distributions and, instead, only make liquidating distributions in the future, if available, and in the discretion of the Board.

We may require additional capital or financing to complete the wind-down of the Company’s business and affairs, dissolution and termination of the Company’s existence under the Plan of Sale and Liquidation, which may reduce the amount available for distribution to stockholders.

There is no assurance that the funds from operations of the Remaining Company Assets, until they are sold, will be sufficient for all required purposes. If such funds are insufficient, we may require additional capital to fund our other capital needs, including funds that will be needed to implement the Plan of Sale and Liquidation effectively. For example, we may be required to invest capital to correct defects or to make improvements before a property can be sold. There is no assurance that we will have funds available to correct these defects or to make these improvements or be able to raise such additional capital, if needed. In addition, the ability to make liquidating distributions will be subject to ongoing compliance with the covenants and other terms of our outstanding indebtedness which could impact our ability to make, or the timing of, distributions. Reductions in the amounts that we receive when we sell our assets, or our failure to comply with the covenants in our outstanding indebtedness documentation, our failure to meet our capital needs with our currently available indebtedness sources, or other financing that is on favorable terms, could reduce, eliminate or delay the liquidating distributions we make to our stockholders, or otherwise adversely affect our financial condition.

Stockholders may be liable to our creditors, up to the amounts received from us pursuant to the Plan of Sale and Liquidation, if our reserve fund or the assets transferred to a liquidating trust are inadequate.

We intend to dispose of our assets, discharge, pay or set aside reserves for our liabilities, including contingent liabilities, and distribute to our stockholders any remaining assets pursuant to the Plan of Sale and Liquidation as soon as practicable. In the event that it should not be feasible, in the opinion of the Board, for the Company to pay, or adequately provide for, all of our debts and liabilities, or if the Board shall determine it is advisable, the Board may establish a liquidating trust to which the Company could distribute in kind its unsold assets.

Any reserve fund or assets transferred to a liquidating trust established by us may not be adequate to cover any contingent expenses and liabilities. Under Maryland law, if we make distributions and fail to maintain an adequate reserve fund or fail to transfer adequate assets in a liquidating trust for payment of our contingent expenses and liabilities, each stockholder could be held liable for payment to our creditors of such amounts owed to creditors which we fail to pay. The liability of any stockholder would be limited to the amount of such liquidating distributions previously received by such stockholder from us or the liquidating trust. Accordingly, in such event, a stockholder could be required to return part or all such distributions received from the Company or the liquidating trust. If a stockholder has paid taxes on liquidating distributions previously received, a repayment of all or a portion of such amount could result in a stockholder incurring a net tax cost if the stockholder’s repayment of an amount previously distributed does not cause a commensurate reduction in taxes payable. If we decide to establish a reserve fund or transfer assets to a liquidating trust to provide for any unknown or outstanding liabilities and expenses, it may delay distributions our stockholders would otherwise receive.

During the course of the liquidation process, we will change our basis of accounting, which could require us to write down our assets.

For as long as appropriate, we intend to continue to use the going-concern basis of accounting. Under the going-concern basis, assets and liabilities are expected to be realized in the normal course of business. However, long-lived assets that are classified as held for sale should be reported at the lower of carrying amount or estimated fair value less cost to sell. For long-lived assets to be held and used, when a change in circumstances occurs, our management must assess whether we can recover the carrying amounts of our long-lived assets. If our management determines that, based on all available information, we cannot recover those carrying amounts, an impairment loss will be recognized to the extent the carrying amounts exceed their estimated fair values.

During the course of the liquidation process, we will eventually change our basis of accounting from the going-concern basis to the liquidation basis of accounting beginning with the period the Company's stockholders approved the Plan of Sale and Liquidation. In order for our financial statements to be in accordance with GAAP under the liquidation basis of accounting, generally all of our assets must be measured at the estimated amount of consideration we expect to collect and all of our liabilities must be measured at the contractual amounts due or the estimated amounts at which the liabilities are expected to be settled. Recorded liabilities will include the estimated costs associated with carrying out the Plan of Sale and Liquidation. There is a risk that the liquidation basis of accounting may result in write-downs of certain of our assets to values substantially less than their carrying amounts and may require that certain of our liabilities be increased or recorded to reflect the anticipated effects of the liquidation.

The Company will likely continue to incur the expenses of complying with public company reporting requirements during the wind-down process until such requirements no longer apply as part of a future delisting and deregistration.

Through our wind-down and liquidation, if any, we intend to, and may be required to, continue to comply with the applicable reporting requirements of the Exchange Act, even if compliance with these reporting requirements is economically burdensome. To the extent such compliance is required, in order to curtail expenses, we may seek relief from the SEC from certain of the reporting requirements under the Exchange Act. We anticipate that, if such relief is granted, we would continue to file annual reports on Form 10-K and current reports on Form 8-K to disclose material events relating to our liquidation, along with any other reports that might be required by the SEC. Although the financial statements contained in such reports will be prepared in accordance with GAAP and will be reviewed by our independent registered public accounting firm, it is not contemplated that the financial statements will be audited by independent registered public accountants.

We anticipate that our Common Stock will be delisted from the NYSE at a future date to be determined by the Board.

In connection with the Plan of Sale and Liquidation, at a future date as the Board determines, we anticipate that we will voluntarily delist our Common Stock from the NYSE, subject to the rules of the NYSE and our Governing Documents, to reduce our operating expenses and maximize our liquidating distributions. In addition, the NYSE may commence delisting proceedings against us if (i) the average closing price of our Common Stock over a 30-day consecutive trading period falls below $1.00 per share, (ii) our average market capitalization over a 30-day consecutive trading period falls below $15 million or (iii) we lose our REIT qualification. If our Common Stock is delisted, our stockholders may have difficulty trading their Common Stock on the secondary market. In addition, if the Board determines, in its sole discretion, to transfer our remaining assets and liabilities to a liquidating trust, our liquidating trust will likely provide for a prohibition on the transfer of trust interests, subject to certain limited exceptions.

RISKS RELATED TO OUR INDEBTEDNESS AND FINANCING

Our debt financing could result in foreclosure of our apartment communities, prevent us from making distributions on our equity, or otherwise adversely affect our liquidity.

A significant number of our assets, including apartment communities, land, and construction projects serve as collateral for our property debt and construction loans. Certain of our subsidiaries have existing secured property-level debt equal to approximately $341.8 million and construction loans of approximately $404.8 million as of December 31, 2025. Over time, we may become party to additional financing arrangements, which may include credit facilities or other bank debt, bonds, and mortgage financing. Our organizational documents do not limit the amount of debt that we may incur, and we have significant amounts of debt outstanding. Payments of principal and interest may leave us with insufficient cash resources to operate our communities.

In connection with such financing activities, we are subject to the risk that our cash flow from operations will be insufficient to make required payments of principal and interest, and the risk that our indebtedness may not be refinanced or that the terms of any refinancing will not be as favorable as the terms of then-existing indebtedness. If we fail to make required payments of principal and interest on our non-recourse property debt, our lenders could foreclose on the apartment communities and other collateral securing such debt, which would result in the loss to us of income and asset value.

Disruptions in the financial markets could affect our ability to obtain financing and the cost of available financing and could adversely affect our liquidity.

Our ability to obtain financing and the cost of such financing depends on the overall condition of the United States credit markets. During periods of economic uncertainty, the United States credit markets may experience significant liquidity disruptions, which may cause the spreads on debt financings to widen considerably and make obtaining financing, including, but not limited to non-recourse property debt secured by stabilized properties, construction loans, and corporate borrowings such as credit facilities, more difficult. In particular, apartment borrowers have benefited from the historic willingness of the Federal National Mortgage Association (“Fannie Mae”), and the Federal Home Loan Mortgage Corporation (“Freddie Mac”), to make substantial amounts of loans secured by multifamily properties, even in times of economic distress. These two lenders are federally chartered and subject to federal regulation, which is subject to change, making uncertain their prospects and ability to provide liquidity in a future downturn.

If our ability to obtain financing is adversely affected, we may be unable to satisfy scheduled maturities on existing financings through other sources of liquidity, which could result in a lender foreclosure on the apartment communities securing such debt and loss of income and asset value, both of which would adversely affect our liquidity.

Increases in interest rates would increase our interest expense and reduce our profitability and could adversely affect our business, operating results, and financial condition.

We have certain non-recourse property debt and construction loans that are based on variable interest rate indexes. An increase or decrease in these variable interest rate indexes would likely increase or decrease our interest expense. An increase in interest expense may affect our profitability.

Covenant restrictions may limit our operations and impact our ability to make payments to our investors.

Some of our existing and/or future debt and other securities may contain covenants that restrict our activities. These may include covenants that limit our operations or impact our ability to make distributions or other payments unless certain financial tests or other criteria are satisfied, as well as certain other customary affirmative and negative covenants.

We may increase leverage in executing our development plan, which could further exacerbate the risks associated with our indebtedness.

We may decide to increase our leverage to execute our development plan and Plan of Sale and Liquidation. We will consider a number of factors when evaluating our level of indebtedness and when making decisions regarding the incurrence of new indebtedness, including the estimated market value of our assets and the ability of particular assets, and our company as a whole, to generate cash flow to cover the expected debt service. Our governing documents do not limit the amount of debt we may incur, and we may change our target debt levels at any time without the approval of our stockholders. In addition, we may incur additional indebtedness from time to time in the future to finance working capital, capital expenditures, or for other purposes. If we increase leverage, the risk related to our indebtedness could also increase.

RISKS RELATED TO TAX LAWS AND REGULATIONS

Aimco may fail to qualify as a REIT, which would reduce the amount of any potential distributions.

To qualify as a REIT, Aimco must satisfy various ongoing requirements relating to the nature of our gross assets and income, the timing and amount of distributions and the composition of our stockholders. Aimco may encounter difficulties satisfying these requirements as part of the liquidation process. If Aimco loses its REIT status and certain relief provisions do not apply, Aimco will not be allowed a deduction for dividends paid to our stockholders in computing its taxable income and will be subject to United States federal income tax on our taxable income at regular corporate rates, including with respect to our income from operations and from liquidating sales of our assets for the taxable year in which our qualification as a REIT terminates and in any subsequent years. Distributions to our stockholders would not be deductible by us nor would they be required to be made, and we would be subject to increased state and local taxes. As a result of these consequences, our failure to qualify as a REIT could substantially reduce the funds available for distribution to our stockholders. Unless entitled to relief under certain provisions of the Code, Aimco also would be disqualified from taxation as a REIT for the four taxable years following the year during which it ceased to qualify as a REIT. In addition, Aimco's failure to qualify as a REIT may place us in default under our credit facilities.

We believe Aimco operates, and has since its taxable year ended December 31, 1994, operated, in a manner that enables it to meet the requirements for qualification and taxation as a REIT. However, qualification as a REIT involves the application of highly technical and complex Code provisions for which only limited judicial and administrative authorities exist. Moreover, even a technical or inadvertent mistake could jeopardize Aimco's REIT status. Aimco's ability to satisfy the asset tests depends upon the fair market values of our assets, some of which are not susceptible to a precise determination, and for which we do not obtain independent appraisals. Aimco's compliance with the REIT annual income and quarterly asset requirements also depends upon our ability to successfully manage the composition of our income and assets on an ongoing basis. Moreover, the proper classification of an instrument as debt or equity for United States federal income tax purposes may be uncertain in some circumstances, which could affect the application of the REIT qualification requirements. Accordingly, there can be no assurance that the IRS will not contend that Aimco's interests in subsidiaries or other issuers constitute a violation of the REIT requirements. Moreover, future economic, market, legal, tax, or other considerations may cause Aimco to fail to qualify as a REIT, or the Board may determine to revoke its REIT status. While the Board does not presently intend to terminate our REIT status prior to the final liquidating distribution of our assets and our termination by voluntary dissolution, pursuant to the Plan of Sale and Liquidation, the Board may take actions that would result in such a loss of REIT status, and there can be no assurance that we will be able to maintain our REIT qualification until our final liquidating distribution.

REIT distribution requirements limit our available cash.

As a REIT, Aimco is subject to annual distribution requirements. Aimco has paid distributions, including taxable stock dividends, intended to enable it to satisfy its distribution requirements. This limits the amount of cash available for other business purposes. Aimco generally must distribute annually at least 90% of its “real estate investment trust taxable income,” which is generally equivalent to net taxable ordinary income, determined without regard to the dividends paid deduction and excluding any net capital gain, in order to qualify as a REIT. To the extent that Aimco does not distribute all of its net capital gain, or distributes at least 90% but less than 100%, of its "real estate investment trust taxable income," it will be required to pay United States federal corporate income tax on the undistributed amount. We intend to make distributions, including liquidating distributions, to Aimco's stockholders to comply with the requirements applicable to REITs under the Code (which may be all cash, a combination of cash and stock satisfying the requirements of applicable law or interests in a liquidating trust or other liquidating entity). However, differences in timing between the recognition of taxable income and the actual receipt of cash could require us to borrow funds on a short-term or long-term basis to meet the 90% distribution requirement of the Code.

Aimco may be subject to federal, state, and local income taxes in certain circumstances.

Even as a REIT, Aimco may be subject to United States federal income and excise taxes in various situations, such as on its undistributed income, as described above. Aimco could also be required to pay a 100% tax on any net income on

non-arm’s-length transactions between us and a TRS and on any net income from sales of apartment communities or other property treated as held primarily for sale to customers in the ordinary course of its business. State and local tax laws may not conform to the United States federal income tax treatment, and Aimco may be subject to state or local taxation in various state or local jurisdictions in which Aimco transacts business. Any taxes imposed on Aimco would reduce our operating cash flow and net income and could negatively impact our ability to pay dividends and distributions.

Dividends payable by REITs generally do not qualify for the reduced tax rates available for some dividends.

REITs are entitled to a United States federal income tax deduction for dividends paid to their stockholders, including distributions pursuant to a plan of liquidation (including distributions or deemed distributions to stockholders of interests in a liquidating trust or other liquidating entity), provided that the plan of liquidation is completed within 24 months of its adoption. Through this dividends paid deduction, a REIT may reduce or eliminate its entity-level United States federal income tax liability, which generally results in a lower combined tax liability of the REIT and its stockholders as compared to that of the combined tax liability of other taxable C-corporations and their stockholders. Notwithstanding this combined benefit, as discussed below, dividends payable by REITs may result in marginally higher taxes to the stockholder.

C-corporations are generally required to pay a corporate-level United States federal income tax on their income, which will reduce the amount available for distribution to stockholders. Dividends paid by a C-corporation may constitute “qualified dividends.” The maximum United States federal tax rate applicable to income from “qualified dividends” payable to United States stockholders that are individuals, trusts, and estates is currently 20%, plus the 3.8% investment tax surcharge. While dividends payable by REITs are generally not eligible for the qualified dividend reduced rates, stockholders that are individuals, trusts, or estates, and meet certain requirements, may generally deduct 20% of the aggregate amount of ordinary dividends from REITs. This deduction is available for taxable years beginning after December 31, 2017, and will generally cause the maximum tax rate for ordinary dividends from REITs to be 29.6%, plus the 3.8% investment tax surcharge. The more favorable tax rates applicable to regular corporate qualified dividends could cause investors who are individuals, trusts, and estates to perceive investments in REITs to be relatively less attractive than investments in the shares of non-REIT corporations that pay dividends, which could adversely affect the value of the shares of REITs, including Common Stock. In connection with the Plan of Sale and Liquidation, United States stockholders may receive one or more liquidating distributions that in general are not taxable as ordinary dividends as further described in our definitive proxy statement, filed with the SEC on January 2, 2026.

Changes to United States federal income tax laws could materially and adversely affect Aimco and Aimco’s stockholders.

The present United States federal income tax treatment of REITs may be modified, possibly with retroactive effect, by legislative, judicial, or administrative action at any time, which could affect the United States federal income tax treatment of an investment in Common Stock. The United States federal income tax rules dealing with REITs are constantly under review by persons involved in the legislative process, the IRS, and the United States Treasury Department, which results in statutory changes as well as frequent revisions to regulations and interpretations. We cannot predict how changes in the tax laws might affect Aimco or its stockholders. Revisions in federal tax laws and interpretations thereof could significantly and negatively affect our ability to qualify as a REIT and the tax considerations relevant to an investment in Common Stock or could cause us to change our investments and commitments.

If the Aimco Operating Partnership were to fail to qualify as a partnership for federal income tax purposes, Aimco would fail to qualify as a REIT and suffer other adverse consequences.

We believe that the Aimco Operating Partnership has been organized and operated in a manner that will allow it to be treated as a partnership, and not an association or publicly traded partnership taxable as a corporation, for federal income tax purposes. As a partnership, the Aimco Operating Partnership is not subject to federal income tax on its income. Instead, each of its partners, including Aimco, is allocated, and may be required to pay tax with respect to, that partner’s share of the Aimco Operating Partnership’s income. No assurance can be provided, however, that the IRS will not challenge the Aimco Operating Partnership’s status as a partnership for federal income tax purposes or that a court would not sustain such a challenge. If the IRS were successful in treating the Aimco Operating Partnership as an association or publicly traded partnership taxable as a corporation for federal income tax purposes, Aimco would fail to meet the gross income tests and certain of the asset tests applicable to REITs and, accordingly, would cease to qualify as a REIT. Such REIT qualification failure could materially adversely affect the value of Aimco’s stock and the Aimco Operating Partnership’s units. Also, the failure of the Aimco Operating Partnership to qualify as a partnership would cause it to become subject to federal corporate income tax, which could reduce significantly the amount of its cash available for debt service and for distribution to its partners, including Aimco.

The sale of properties may cause us to incur excise or income taxes or fail to maintain our REIT status, each of which would significantly reduce the amount available for distribution to our stockholders.

The sale of one or more of our properties may be considered a prohibited transaction under the Code. Net income derived by a REIT from a prohibited transaction is subject to a 100% excise tax. The term “prohibited transaction” generally includes a sale or other disposition of property (other than foreclosure property) that is held as inventory or primarily for sale to customers in the ordinary course of a trade or business. Whether property is held as inventory or “primarily for sale to customers in the ordinary course of a trade or business” depends on the particular facts and circumstances, and no assurance can be given that no property sold by us will be treated as inventory or as property held for sale to customers. Further, the sale of our properties in anticipation of or in connection with the Plan of Sale and Liquidation may not satisfy certain prohibited transaction safe-harbor provisions of the Code, depending on the circumstances in which such sales are completed. Accordingly, no assurance can be given that we can prevent the imposition of the 100% excise tax. The 100% tax does not apply to gains from the sale of property that is held through a TRS entity or other taxable corporation, although such income will be subject to tax in the hands of the TRS or other taxable corporation at regular corporate income tax rates.

If, as anticipated, we sell a significant portion of our assets prior to our final liquidating distribution (including the distribution of interests in a liquidating trust or our conversion into a liquidating entity), the composition of our portfolio will change, which could have a material impact on our ability to satisfy the various income, asset, distribution, and other requirements for qualification as a REIT.

As a result of any of the foregoing circumstances, the amount available for distribution to our stockholders could be significantly reduced.

Distributing interests in a liquidating trust (or other liquidating entity) may cause our stockholders to recognize gain prior to the receipt of cash.

To qualify as a REIT, we are required to distribute dividends, other than capital gain dividends, to our stockholders in an amount at least equal to (i) the sum of (a) 90% of our REIT taxable income, computed without regard to the deduction for dividends paid and net capital gain, and (b) 90% of our net income (after United States federal income tax), if any, from foreclosure property, minus (ii) the sum of specified items of non-cash income. Our liquidating distributions generally will not qualify as deductible dividends for this purpose unless, among other things, we make such distributions within 24 months after the adoption of the Plan of Sale and Liquidation.

Conditions may arise which cause us not to be able to complete our liquidating distributions within such 24-month period or otherwise maintain our REIT status. The Board may at any time transfer our remaining assets and obligations to a liquidating trust or otherwise convert the Company to a liquidating entity if it determines that such a contribution or conversion transaction is advisable. As a result, our stockholders would recognize gain to the extent that their share of the cash and the fair market value of any assets received or initially held by the liquidating trust or other liquidating entity, less any liabilities assumed by the liquidating trust or other liquidating entity, was greater than their adjusted tax basis in their Common Stock, regardless of whether they contemporaneously receive a distribution of cash with which to satisfy any resulting tax liability. In the case of such a transaction, the Company may have withholding tax obligations with respect to foreign stockholders. In addition, it is possible that the fair market value of the assets received or initially held by the liquidating trust or other liquidating entity, as estimated for purposes of determining the extent of a stockholder’s gain at the time at which interests in the liquidating trust or other liquidating entity are distributed to the stockholders, will exceed the cash or fair market value of property received by the liquidating trust or other liquidating entity on a later sale of the assets. In this case, a stockholder could recognize a loss in a taxable year subsequent to the taxable year in which gain was recognized, the deductibility of which may be limited under the Code. The distribution to stockholders of interests in a liquidating trust or the conversion of the Company to a liquidating entity may also cause ongoing adverse tax consequences (particularly to tax-exempt and foreign stockholders, which may be required to file U.S. tax returns with respect to their share of income generated by the liquidating trust or other liquidating entity).

Because liquidating distributions may be made in multiple tax years, if we were to abandon the Plan of Sale and Liquidation in a tax year subsequent to one in which we already made liquidating distributions, the timing and character of a stockholder’s taxation with respect to liquidating distributions made to such stockholder in the prior tax year could change, which may subject such stockholder to tax liability (which tax liability could be at ordinary income rates rather than capital gains rates) in the prior tax year that such stockholder would not otherwise have been subject to and we could lose our REIT status as of the beginning of such prior tax year.

Until we are dissolved, the Board may terminate the Plan of Sale and Liquidation without stockholder approval at the Board’s discretion to the extent permitted under applicable law and authorize us to seek to dispose of all our assets through a merger, business combination or similar transaction. If the Board were to terminate the Plan of Sale and Liquidation, liquidating distributions previously made to our stockholders could be recharacterized as distributions that are subject to tax under the provisions of the Code applicable to the stockholders of a REIT in the same manner as distributions on our Common Stock would be subject to tax absent approval of the Plan of Sale and Liquidation by our stockholders. Such liquidating distributions could also be recharacterized as a payment to our stockholders for the sale or exchange of their shares in partial redemption of them. Further, if such liquidating distributions made prior to the abandonment of the Plan of Sale and Liquidation were treated as distributions rather than a sale or exchange, whether our stockholders are taxed at ordinary rates or capital gains rates may depend on whether we had declared any portion of such distributions as capital gain dividends. Whether distribution or sale treatment would apply to our stockholders depends on each stockholder’s particular circumstances and various other factors, and we cannot predict which would apply; however, regardless of which treatment would apply, each distribution likely would at least be partially taxable to our stockholders, in which case a stockholder may have to file amended returns and pay any additional taxes to the extent any are due.

RISKS RELATED TO AIMCO OPERATING PARTNERSHIP UNITS

There are restrictions on the ability to transfer and redeem Aimco Operating Partnership Units, there is no public market for Aimco Operating Partnership Units and holders of Aimco Operating Partnership Units are subject to dilution.

The Aimco Operating Partnership agreement restricts the transferability of OP Units. Until the expiration of a one-year holding period, subject to certain exceptions, investors may not transfer OP Units without the consent of Aimco Operating Partnership’s general partner. Thereafter, investors may transfer such OP Units subject to the satisfaction of certain conditions, including the general partner’s right of first refusal. In addition, after the expiration of the one-year holding period, investors have the right, subject to the terms of Aimco Operating Partnership’s agreement, to require Aimco Operating Partnership to redeem all or a portion of such investor’s OP Units (in exchange for Common Stock or cash, at the Aimco Operating Partnership’s discretion) once per quarter on an exchange date set by Aimco Operating Partnership, provided such investor provides notice at least 45 days prior to the quarterly exchange date. There is no public market for the OP Units. Aimco Operating Partnership has no plans to list any OP Units on a securities exchange. It is unlikely that any person will make a market in the OP Units, or that an active market for the OP Units will develop. If a market for the OP Units develops and the OP Units are considered “readily tradable” on a “secondary market (or the substantial equivalent thereof),” Aimco Operating Partnership would be classified as a publicly traded partnership for United States federal income tax purposes, which could have a material adverse effect on Aimco Operating Partnership and its unitholders.

In addition, Aimco Operating Partnership may issue an unlimited number of additional OP Units or other securities for such consideration and on such terms as it may establish, without the approval of the holders of OP Units. Such securities could have priority over the OP Units as to cash flow, distributions, and liquidation proceeds. The effect of any such issuance may be to dilute the interests of holders of OP Units.

Cash distributions by Aimco Operating Partnership are not guaranteed and may fluctuate with partnership performance.

Aimco Operating Partnership does not intend to make regular distributions to holders of OP Units (other than what is required for Aimco to maintain its REIT status or return capital to stockholders, including as part of the Plan of Sale and Liquidation). There can be no assurance regarding the amounts of available cash that Aimco Operating Partnership will generate or the portion that its general partner will choose to distribute. The actual amounts of available cash will depend upon numerous factors, including profitability of operations, required principal and interest payments on its debt, its issuance of debt and equity securities, fluctuations in working capital, capital expenditures, adjustments in reserves, prevailing economic conditions, and financial, business, and other factors, some of which may be beyond Aimco Operating Partnership’s control. Cash distributions depend primarily on cash flow, including from reserves, and not on profitability, which is affected by non-cash items. Therefore, cash distributions may be made during periods when our operating partnership records losses and may not be made during periods when it records profits. The Aimco Operating Partnership agreement gives the general partner discretion in establishing reserves for the proper conduct of the partnership’s business that will affect the amount of available cash. Aimco Operating Partnership may be required to make reserves for the future payment of principal and interest under its indebtedness. In addition, Aimco Operating Partnership’s credit facilities may limit its ability to distribute cash to holders of OP Units. As a result of these and

other factors, there can be no assurance regarding actual levels of cash distributions on OP Units, and Aimco Operating Partnership’s ability to distribute cash may be limited during the existence of any events of default under any of its debt instruments.

Holders of OP Units have limited voting rights.

Aimco Operating Partnership is managed and operated by its general partner, Aimco. Unlike the holders of common stock in a corporation, holders of OP Units have only limited voting rights on matters affecting Aimco Operating Partnership’s business. Such matters relate to certain amendments of the partnership agreement and certain transactions such as the institution of bankruptcy proceedings, an assignment for the benefit of creditors and certain transfers by the general partner of its interest in Aimco Operating Partnership or the admission of a successor general partner. Holders of OP Units have no right to elect the general partner on an annual or other continuing basis, or to remove the general partner, or to vote on or otherwise consent to the liquidation of the Aimco Operating Partnership. As a result, holders of OP Units have limited influence on matters affecting the operation of Aimco Operating Partnership, and third parties may find it difficult to attempt to gain control over, or influence the activities of, Aimco Operating Partnership.

The limited partners of Aimco Operating Partnership are unable to remove the general partner or to vote in the election of our directors unless they own shares of Aimco. In order to comply with specific REIT tax requirements, Aimco's charter has restrictions on the ownership of its equity securities. As a result, Aimco Operating Partnership limited partners and Aimco's stockholders are limited in their ability to effect a change of control of Aimco Operating Partnership and Aimco, respectively.

Holders of OP Units may not have limited liability in specific circumstances.

The limitations on the liability of limited partners for the obligations of a limited partnership have not been clearly established in some states. If it were determined that Aimco Operating Partnership had been conducting business in any state without compliance with the applicable limited partnership statute, or that the right or the exercise of the right by the holders of OP Units as a group to make specific amendments to the agreement of limited partnership or to take other action under the agreement of limited partnership constituted participation in the “control” of Aimco Operating Partnership’s business, then a holder of OP Units could be held liable under specific circumstances for our operating partnership’s obligations to the same extent as the general partner.

Aimco may have conflicts of interest with holders of OP Units.

Conflicts of interest could arise in the future as a result of the relationships between the general partner of Aimco Operating Partnership and its affiliates (including Aimco), on the one hand, and Aimco Operating Partnership or any partner thereof, on the other, including during the Plan of Sale and Liquidation. The directors and officers of the general partner have fiduciary duties to manage the general partner in a manner beneficial to us, as the sole stockholder of the general partner. At the same time, as the general partner of our operating partnership, we have fiduciary duties to manage Aimco Operating Partnership in a manner beneficial to Aimco Operating Partnership and its limited partners. The duties of the general partner of Aimco Operating Partnership to Aimco Operating Partnership and its partners may therefore come into conflict with the duties of the directors and officers of the general partner to its sole stockholder, Aimco. Such conflicts of interest might arise in the following situations, among others:

Provisions in the Aimco Operating Partnership agreement may limit the ability of a holder of OP Units to challenge actions taken by the general partner, including actions taken pursuant to the Plan of Sale and Liquidation.

Delaware law provides that, except as provided in a partnership agreement, a general partner owes the fiduciary duties of loyalty and care to the partnership and its limited partners. The Aimco Operating Partnership agreement expressly authorizes the general partner to enter into, on behalf of Aimco Operating Partnership, a right of first opportunity arrangement and other conflict avoidance agreements with various affiliates of Aimco Operating Partnership and the general partner, on such terms as the general partner, in its sole and absolute discretion, believes are advisable. The latitude given in the Aimco Operating Partnership agreement to the general partner in resolving conflicts of interest may significantly limit the ability of a holder of OP Units to challenge what might otherwise be a breach of fiduciary duty. The general partner believes, however, that such latitude is necessary and appropriate to enable it to serve as the general partner of Aimco Operating Partnership without undue risk of liability.

The Aimco Operating Partnership agreement limits the liability of the general partner for actions taken in good faith. Aimco Operating Partnership’s partnership agreement expressly limits the liability of the general partner by providing that the general partner, and its officers and directors, will not be liable or accountable in damages to Aimco Operating Partnership, the limited partners, or assignees for errors in judgment or mistakes of fact or law or of any act or omission if the general partner or such director or officer acted in good faith. In addition, Aimco Operating Partnership is required to indemnify the general partner, its affiliates, and their respective officers, directors, employees, and agents to the fullest extent permitted by applicable law, against any and all losses, claims, damages, liabilities, joint or several, expenses, judgments, fines, and other actions incurred by the general partner or such other persons, provided that Aimco Operating Partnership will not indemnify for (i) willful misconduct or a knowing violation of the law or (ii) for any transaction for which such person received an improper personal benefit in violation or breach of any provision of the partnership agreement. The provisions of Delaware law that allow the common law fiduciary duties of a general partner to be modified by a partnership agreement have not been resolved in a court of law, and the general partner has not obtained an opinion of counsel covering the provisions set forth in the Aimco Operating Partnership agreement that purport to waive or restrict the fiduciary duties of the general partner that would be in effect under common law were it not for the partnership agreement.

Provisions in the Aimco Operating Partnership agreement give the general partner discretion over decisions related to liquidation and dissolution of Aimco Operating Partnership.

The Aimco Operating Partnership agreement gives the general partner sole and absolute discretion to elect to liquidate Aimco Operating Partnership. Such liquidation is expected to occur in connection with Aimco’s Plan of Sale and Liquidation, and, once Aimco Operating Partnership enters liquidation, the partners will be restricted from taking actions inconsistent with, or not necessary to or appropriate for, the winding up of Aimco Operating Partnership’s business.

RISKS RELATED TO OUR ORGANIZATIONAL STRUCTURE

Aimco Operating Partnership and its subsidiaries may be prohibited from making distributions and other payments.

All of Aimco Operating Partnership’s real estate assets are owned by subsidiaries of our operating partnership. As a result, Aimco Operating Partnership depends on distributions and payments from its subsidiaries in order to satisfy our financial obligations and make payments to our equity holders, as applicable. The ability of Aimco Operating Partnership and its subsidiaries to make such distributions and other payments depends on their earnings and cash flows and may be subject to statutory or contractual limitations, including covenants in some of our existing and/or future debt agreements. As an equity investor in our subsidiaries, our right to receive assets upon their liquidation or reorganization, including in connection with the Plan of Sale and Liquidation, are effectively subordinated to the claims of their creditors and any holders of preferred equity senior to our equity investments. To the extent that we are recognized as a creditor of such subsidiaries, our claims may still be

subordinate to any security interest in or other lien on their assets and to any of their debt or other obligations that are senior to our claims.

Limits on ownership of shares specified in Aimco’s charter may result in the loss of economic and voting rights by purchasers that violate those limits.

Aimco's charter limits ownership of Common Stock by any single stockholder (applying certain “beneficial ownership” rules under the federal tax and securities laws) to 8.7% (or up to 12.0% upon a waiver from Aimco’s Board) of outstanding Common Stock, or 15% in the case of certain pension trusts, registered investment companies, and certain individuals (or up to 20.0% for such pension trusts or registered investment companies upon a waiver from Aimco’s Board). Aimco's charter also limits ownership of Common Stock and preferred stock by any single stockholder to 8.7% of the value of the outstanding Common Stock and preferred stock, or 15% in the case of certain pension trusts, registered investment companies, and certain individuals. The charter also prohibits anyone from buying shares of Aimco's capital stock if the purchase would result in Aimco losing its REIT status. This could happen if a transaction results in fewer than 100 persons owning all of Aimco's shares of capital stock or results in five or fewer persons (applying certain attribution rules of the Code) owning more than 50% of the value of all of Aimco's shares of capital stock. If anyone acquires shares in excess of the ownership limit or in violation of the ownership requirements of the Code for REITs:

Aimco may purchase the shares of capital stock held in trust at a price equal to the lesser of the price paid by the transferee of the shares or the then current market price. If the trust transfers any of the shares of capital stock, the affected person will receive the lesser of the price paid for the shares or the then current market price. An individual who acquires shares of capital stock that violate the above rules bears the risk that the individual:

Aimco’s charter may limit the ability of a third-party to acquire control of Aimco.

The 8.7% and other ownership limits discussed above may have the effect of delaying or precluding acquisition by a third-party of control of Aimco without the consent of Aimco's Board. Aimco's charter authorizes its Board to issue up to 510,587,500 shares of capital stock, which consists entirely of Common Stock as of December 31, 2025. Under Aimco's charter, Aimco's Board has the authority to classify and reclassify any of our unissued shares of capital stock into shares of capital stock with such preferences, conversion or other rights, voting power restrictions, limitations as to dividends, qualifications, or terms or conditions of redemptions as the Board may determine. The authorization and issuance of a new class of capital stock could have the effect of delaying or preventing someone from taking control of Aimco, where there is a difference of opinion between Aimco's Board and others as to what is in Aimco's stockholders’ best interests.

The Maryland General Corporation Law may limit the ability of a third-party to acquire control of Aimco.

As a Maryland corporation, Aimco is subject to various Maryland laws that may have the effect of discouraging offers to acquire us and increasing the difficulty of consummating any such offers, where there is a difference of opinion between our Board and others as to what is in our stockholders’ best interests or where our Board does not approve an offer. The MGCL, specifically the Maryland Business Combination Act, restricts mergers and other business combination transactions between us and any person who acquires, directly or indirectly, beneficial ownership of shares of our stock representing 10% or more of the voting power without our Board's prior approval. Any such business combination transaction could not be completed until five years after the person acquired such voting power, and generally only with the approval of stockholders representing 80% of all votes entitled to be cast and 66-2/3% of the votes entitled to be cast, excluding the interested stockholder, or upon payment of a fair price. The MGCL, specifically the Maryland Control Share Acquisition Act, provides generally that a person who acquires shares of our capital stock representing 10% or more of the voting power in electing directors will have no voting rights unless approved by a vote of two-thirds of the shares eligible to vote. Additionally, the MGCL provides, among other things, that the Board has broad discretion in adopting stockholders’ rights plans and has the sole power to fix the record date, time, and place for special meetings of the stockholders. To date, we have not adopted a stockholders’ rights plan. In addition, the MGCL provides that a corporation that:

In connection with the Separation, the board of directors of Aimco Predecessor elected for Aimco to be subject to all of the provisions of MUTA until the 2024 annual meeting of stockholders. As of the 2023 annual meeting of stockholders, (i) Aimco is no longer subject to any of the provisions of MUTA, and (ii) Aimco is prohibited from electing to be subject to MUTA without the approval of its stockholders. Additionally, at the 2023 annual meeting of stockholders, Aimco’s Charter was amended to (i) lower the threshold for stockholders to remove directors to a simple majority of shares outstanding, eliminate the requirement that such removal be for “cause,” and enable stockholders to fill vacancies on the Board created by stockholder action, and (ii) reduce to a simple majority the stockholder vote required to amend the Charter and Amended and Restated Bylaws.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 1C. CYBERSECURITY

ITEM 2. PROPERTIES

We own a geographically diversified portfolio of operating properties that produce stable cash flow and serves to balance the risk and highly variable cash flows associated with our portfolio of development and value-add investments. Our entire portfolio of operating properties includes 19 apartment communities (15 consolidated properties, including two held for sale, and four unconsolidated properties) located in seven major U.S. markets and with average rents in line with local market averages (generally defined as B class). Our current development portfolio consists of 9 properties, including one under construction, two completed and in lease-up, one that has completed lease-up and is stabilizing operations, and five undeveloped land parcels, located primarily in Southeast Florida, the Washington, D.C. Metro Area and Colorado's Front Range.

Additional information about our consolidated real estate, including property debt, is contained in “Schedule III - Real Estate and Accumulated Depreciation” in this Annual Report on Form 10-K.

ITEM 3. LEGAL PROCEEDINGS

From time to time, we may be a party to certain legal proceedings, incidental to the normal course of business. While the outcome of the legal proceedings cannot be predicted with certainty, we believe there are no legal proceedings pending that would have a material effect upon our financial condition or result of operations.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES

Aimco

Aimco's Common Stock is listed and traded on the NYSE under the symbol “AIV”.

On February 27, 2026, there were 143,870,326 shares of Common Stock outstanding, held by 861 stockholders of record. The number of holders does not include individuals or entities who beneficially own shares but whose shares are held of record by a broker or clearing agency but does include each such broker or clearing agency as one record holder.

Unregistered Sales of Equity Securities

From time to time, Aimco may issue shares of its Common Stock in exchange for OP Units, defined under the Aimco Operating Partnership heading below. Such shares are issued based on an exchange ratio of one share for each OP Unit. Aimco may also issue shares of its Common Stock in exchange for limited partnership interests in consolidated real estate partnerships.

During the year ended December 31, 2025, 2,554,326 shares of Common Stock were issued in exchange for 2,554,326 OP Units on a one-for-one basis. Such shares were issued in reliance on Section 4(a)(2) of the Securities Act of 1933, as amended.

Repurchases of Equity Securities

On July 28, 2022, Aimco announced that its Board authorized Aimco to repurchase up to 15 million shares of its outstanding Common Stock. On November 6, 2023, Aimco announced that the Board authorized Aimco to repurchase up to an additional 15 million shares of its outstanding Common Stock, for a total of 30 million shares. As of December 31, 2025, Aimco was authorized to repurchase up to 16.2 million shares of its outstanding Common Stock. Subject to certain blackout restrictions, these repurchases may be made from time to time in the open market or in privately negotiated transactions. These share repurchase authorizations have no expiration date. During the year ended December 31, 2025, Aimco repurchased 29,498 shares at an aggregate weighted-average price of $8.66 per share.

Aimco Operating Partnership

There is no public market for OP Units, and Aimco Operating Partnership has no intention of listing OP Units on any securities exchange. In addition, Aimco Operating Partnership’s Partnership agreement restricts the transferability of OP Units.

On February 27, 2026, there were 152,926,160 OP Units and equivalents outstanding (of which 143,870,326 were held by Aimco), that were held by 1,798 unitholders of record.

Unregistered Sales of Equity Securities

Aimco Operating Partnership did not issue any unregistered OP Units during the twelve months ended December 31, 2025.

Repurchases of Equity Securities

Aimco Operating Partnership’s partnership agreement generally provides that after holding OP Units for one-year, limited partners other than Aimco have the right to redeem their OP Units for cash or, at its election, shares of Aimco Common Stock on a one-for-one basis (subject to customary antidilution adjustments). During the year ended December 31, 2025, 2,554,326 OP Units were redeemed in exchange for shares of Common Stock on a one-for-one basis and 76,383 OP Units were redeemed in exchange for cash at an aggregate weighted-average price per unit of $8.48.

The following table summarizes repurchases, or redemptions in exchange for cash, of the Aimco Operating Partnership's equity securities for the three months ended December 31, 2025.

(1) The terms of the Aimco Operating Partnership’s partnership agreement do not provide for a maximum number of units that may be repurchased, and other than the express terms of its partnership agreement, the Aimco Operating Partnership has no publicly announced plans or programs of repurchase. However, for Aimco to repurchase shares of its Common Stock, the Aimco Operating Partnership must make a concurrent repurchase of its OP Units held by Aimco at a price per unit that is equal to the price per share Aimco pays for its Common Stock.

Dividend and Distribution Payments

As a REIT, Aimco is required to distribute annually to holders of its Common Stock at least 90.0% of its “real estate investment trust taxable income,” which, as defined by the Code and United States Department of Treasury regulations, is generally equivalent to net taxable ordinary income. Aimco's Board determines and declares Aimco's dividends. In making a dividend determination, Aimco's Board considers a variety of factors, including REIT distribution requirements, current market conditions, liquidity needs, and other uses of cash, such as deleveraging.

In connection with the Plan of Sale and Liquidation, United States stockholders may receive one or more liquidating distributions. The amount of any liquidating distribution will be applied first to reduce a United States stockholder’s adjusted tax basis in its Common Stock, but not below zero. A United States stockholder’s adjusted tax basis in its Common Stock will generally be equal to the stockholder’s cost of its shares, reduced by any prior distributions that were treated as reductions in basis rather than taxable dividends. To the extent that distributions pursuant to the Plan of Sale and Liquidation exceed a United States stockholder’s basis in its Common Stock, the excess will constitute taxable gain and be recognized in the year in which the distribution is received. If the total amount of liquidating distributions received by a United States stockholder is less than the adjusted tax basis of its shares, the United States stockholder will generally recognize a loss in the year in which the final liquidating distribution is received. However, a future abandonment of the Plan of Sale and Liquidation subsequent to the payment of liquidating distributions could complicate the tax consequences to our stockholders, as described in greater detail in our definitive proxy statement, filed with the SEC on January 2, 2026.

The Board of Aimco Operating Partnership’s general partner determines and declares distributions on OP Units. Aimco, through a wholly-owned subsidiary, is the sole general partner of Aimco Operating Partnership. As of December 31, 2025, Aimco owned 94.1% of the legal interest in the OP Units of Aimco Operating Partnership and 96.6% of the economic interest of Aimco Operating Partnership. Aimco Operating Partnership holds all of our assets and manages the daily operations of our business. The distributions paid by Aimco Operating Partnership to Aimco are used to fund the dividends paid to Aimco's stockholders. Accordingly, the per share dividends Aimco pays to its stockholders generally equal the per unit distributions paid by Aimco Operating Partnership to holders of its OP Units.

Performance Graph

The following graph compares cumulative total returns for Aimco's Common Stock, the FTSE Nareit Equity Apartments Index, and the Russell 2000. The FTSE Nareit Equity Apartments Index is published by The National Association of Real Estate Investment Trusts (“Nareit”), a representative of multifamily real estate investment trusts and publicly traded real estate companies with interests in United States real estate and capital markets. The FTSE Nareit Equity Apartments Index serves as our sector comparison and the Russell 2000 serves as our broad-based market index.

The indices are weighted for all companies that fit the definitional criteria of the particular index and are calculated to exclude companies as they are acquired and to add companies to the index calculation as they become publicly traded companies. All

companies that fit the definitional criteria and existed at the point in time presented are included in the index calculations. The graph assumes the investment of $100 in Aimco Common Stock and in each index on December 31, 2020, and that all dividends paid have been reinvested. The historical information set forth on the following page is not necessarily indicative of future performance.

Source: Zacks Investment Research, Inc.

The Performance Graph will not be deemed to be incorporated by reference into any filing by us under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that we specifically incorporate the same by reference.

Issuances Under Equity Compensation Plans

Our equity compensation plan information required by this item is incorporated by reference to the definitive proxy statement for the 2026 Annual Meeting of Stockholders to be filed within 120 days after the end of the year ended December 31, 2025.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of financial condition and results of operations for the year ended December 31, 2025, compared to 2024, should be read in conjunction with the accompanying consolidated financial statements in Part II, Item 8. For discussion of the year ended December 31, 2024, compared to 2023, please refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 on our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 24, 2025.

Executive Overview

Subsequent to December 31, 2025, on February 6, 2026, Common Stockholders adopted the Plan of Sale and Liquidation. Prior to the adoption of the Plan of Sale and Liquidation, our mission was to make real estate investments, primarily focused on the multifamily sector within targeted U.S. markets, where outcomes were enhanced through our human capital and substantial value was created for investors, teammates, and the communities in which we operated. Subsequent to the Plan of Sale and Liquidation, we plan to sell our assets in an orderly fashion and return net proceeds from asset sales and cash on hand to our stockholders, subject to payment of our liabilities and obligations.

Please refer to “Item 1. Business” for additional discussion of our business organization and strategy and “Item 2. Properties” and “Schedule III – Real Estate and Accumulated Depreciation” for details regarding the size, location, and key characteristics of our various properties.

Results for the Twelve Months Ended December 31, 2025

The results from the execution of our business plan during the twelve months ended December 31, 2025, are described below.

Financial Results and Highlights

Transactions

On February 6, 2026, Aimco stockholders adopted the Plan of Sale and Liquidation proposed by Aimco's Board of Directors. Pursuant to this plan, Aimco expects to continue to monetize its assets and return proceeds to stockholders through liquidating distributions. Additional information regarding the Plan of Sale and Liquidation is available in the Company’s filings with the U.S. Securities and Exchange Commission.

Operating Property Results

As of the year ended December 31, 2025, we own a diversified portfolio of 15 stabilized apartment communities, including two held for sale, located in U.S. markets with average rents in line with local market averages (generally defined as B class).

Highlights for the year ended December 31, 2025 include:

Active Construction and Lease-up Assets

We plan to fulfill our contractual obligations and maximize value at our one multifamily development project under construction in Miami, Florida and complete the lease-up of our two recently completed Washington, D.C. Metro Area multifamily communities. We have ceased planning and predevelopment efforts for future projects.

During the year ended December 31, 2025, we invested $93.6 million in development activities compared to $126.1 million in the year ended December 31, 2024. Updates on our one active development project and two lease-ups include:

Balance Sheet and Financing Activities

We are highly focused on maintaining a strong balance sheet, prudent simplification, and appropriate liquidity while promptly returning capital to stockholders. As of December 31, 2025, we had $394.9 million of cash on hand and $11.7 million of restricted cash. Refer to the Liquidity and Capital Resources section for additional information regarding our leverage. Subsequent to year end, we announced the following sources and uses of cash:

As of December 31, 2025, 100% of our debt was either fixed rate or hedged with interest rate cap protection. Considering investments under contract to sell and including contractual extensions, we have no debt maturing prior to June 2027.

Financial Results of Operations

The following discussion and analysis of the results of our operations and financial condition should be read in conjunction with the accompanying consolidated financial statements in Item 8.

Results of Operations for the Year Ended December 31, 2025, Compared to the same period in 2024

Net income attributable to Aimco common stockholders changed by $656.5 million for the year ended December 31, 2025 compared to the same period in 2024, as described more fully below.

Property Results

We have three segments: (i) Development; (ii) Operating; and (iii) Other.

Our Development segment includes properties that are under construction or have not achieved stabilization, as well as land held for development. As of December 31, 2025, our Development and segment consists of 9 properties, including one under construction, two completed and in lease-up, one that has completed lease-up and is stabilizing operations, and five undeveloped land parcels.

Our Operating segment includes 15 residential apartment communities that have achieved stabilized levels of operations as of January 1, 2024, and maintained it throughout the current year and comparable period. Two of the communities, Hillmeade and Plantation Gardens, meet the held for sale criteria in accordance with GAAP as described in Note 2 to the consolidated financial statements in Item 8. We aggregate all our apartment communities that have reached stabilization into our Operating segment.

Our Other segment consists of properties that are not included in our Development or Operating segments. Other segment includes The Benson Hotel, our only hotel.

Prior period segment information has been recast based upon our current segment population, and is consistent with how our President and Chief Executive Officer, the chief operating decision maker (“CODM”) evaluates the business. During the year ended December 31, 2025, we reclassified as discontinued operations the five properties within our Boston portfolio, which was previously reported within the Operating segment.

We use property net operating income (“PNOI”) to assess the operating performance of our segments. PNOI is defined as rental and other property revenues, excluding utility reimbursements, less direct property operating expenses, net of utility reimbursements, for the consolidated communities; but excluding

Please refer to Note 15 to the consolidated financial statements in Item 8 for further discussion regarding our segments, including a reconciliation of these amounts to consolidated rental and other property revenues and property operating expenses.

Property Net Operating Income

The results of our segments for the years ended December 31, 2025 and 2024, as presented below, are based on segment classifications as of December 31, 2025.