Weiss Asset Management and Andrew Weiss report 5.7% stake in AIV (AIV)

Rhea-AI Filing Summary

Apartment Investment & Management Co. Schedule 13G reports that Weiss Asset Management, WAM GP LLC and Andrew M. Weiss beneficially own 8,150,456 shares of Class A Common Stock, equal to 5.7% of the class. The filing cites 143,870,326 Class A shares outstanding as of February 27, 2026.

The filing lists shared voting and dispositive power over the reported shares and is signed by an authorized signatory on May 11, 2026.

Key Figures

Reported shares beneficially owned: 8,150,456 shares Percent of class: 5.7% Class A shares outstanding: 143,870,326 shares +2 more

5 metrics

Reported shares beneficially owned 8,150,456 shares Beneficial ownership reported on Schedule 13G

Percent of class 5.7% Calculated using shares outstanding as of <date>February 27, 2026</date>

Class A shares outstanding 143,870,326 shares As of <date>February 27, 2026</date>, per issuer Form 10-K

CUSIP 03748R747 Class A Common Stock CUSIP reported on the filing

Filing signature date May 11, 2026 Signature date on Schedule 13G

Key Terms

Schedule 13G, beneficially owned, shared dispositive power, joint filing agreement

4 terms

Schedule 13G regulatory

"Schedule 13G reports beneficial ownership of securities"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"Amount beneficially owned: 8,150,456"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared dispositive power regulatory

"Shared Dispositive Power 8,150,456.00"

joint filing agreement legal

"Exhibit Information Joint Filing Agreement"

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Accepted by SEC EDGAR 05/11/2026 - 11:42 AM Learn about SEC filing dates

FAQ

What stake does Weiss Asset Management report in AIV?

Weiss Asset Management reports 8,150,456 shares (5.7%) of AIV Class A Common Stock. The filing shows shared voting and dispositive power for that aggregate position reported by Weiss Asset Management, WAM GP LLC and Andrew M. Weiss.

How was the 5.7% ownership calculated for AIV (AIV)?

The 5.7% figure is based on 143,870,326 Class A shares outstanding as of February 27, 2026, per the issuer's Form 10-K. The Schedule 13G cites that share count when computing percent of class.

Who are the filers listed on the Schedule 13G for AIV?

The filing names Weiss Asset Management LP, WAM GP LLC, and Andrew M. Weiss with a shared business address in Boston. WAM GP is the general partner and Andrew Weiss is the managing member; each disclaims beneficial ownership except to the extent of pecuniary interest.

When was the AIV Schedule 13G signed and who signed it?

The Schedule 13G was signed on May 11, 2026 by Mary Merrigan as Authorized Signatory and as Attorney-in-Fact for Andrew M. Weiss, under a referenced power of attorney incorporated by exhibit reference.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

APARTMENT INVESTMENT & MANAGEMENT CO

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

03748R747

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 03748R747

1

Names of Reporting Persons

Weiss Asset Management LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 8,150,456.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 8,150,456.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,150,456.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.7 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 03748R747

1

Names of Reporting Persons

WAM GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 8,150,456.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 8,150,456.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,150,456.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.7 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 03748R747

1

Names of Reporting Persons

WEISS ANDREW M

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 8,150,456.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 8,150,456.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,150,456.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.7 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: APARTMENT INVESTMENT & MANAGEMENT CO
(b)	Address of issuer's principal executive offices: 4582 SOUTH ULSTER STREET, SUITE 1450, DENVER, COLORADO, 80237.
Item 2.
(a)	Name of person filing: (i) Weiss Asset Management LP ("Weiss Asset Management"). (ii) WAM GP LLC ("WAM GP"). (iii) Andrew M. Weiss, Ph.D. ("Andrew Weiss").
(b)	Address or principal business office or, if none, residence: Weiss Asset Management, WAM GP, and Andrew Weiss have a business address of 222 Berkeley St., 16th Floor, Boston, Massachusetts 02116.
(c)	Citizenship: (i) Weiss Asset Management is a Delaware limited partnership. (ii) WAM GP is a Delaware limited liability company. (iii) Andrew Weiss is a United States citizen.
(d)	Title of class of securities: Class A Common Stock
(e)	CUSIP Number(s): 03748R747
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 8,150,456 Weiss Asset Management is the sole investment manager to a private investment partnership, (the "Partnership") and private investment funds ("Funds"). WAM GP is the sole general partner of Weiss Asset Management. Andrew Weiss is the managing member of WAM GP. Shares reported for WAM GP, Andrew Weiss and Weiss Asset Management include shares beneficially owned by the Partnership and the Funds. Each of WAM GP, Weiss Asset Management, and Andrew Weiss disclaims beneficial ownership of the shares reported herein as beneficially owned by each except to the extent of their respective pecuniary interest therein. The percent of class computations are based on 143,870,326 Class A Common Stock, par value $0.01 per share, as of February 27, 2026, as reported in the Form 10-K of the Issuer, which was filed with the SEC on March 2, 2026.
(b)	Percent of class: 5.7%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 8,150,456
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 8,150,456
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Item 4.
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Weiss Asset Management LP

Signature:	Mary Merrigan
Name/Title:	Authorized Signatory
Date:	05/11/2026

WAM GP LLC

Signature:	Mary Merrigan
Name/Title:	Authorized Signatory
Date:	05/11/2026

WEISS ANDREW M

Signature:	Mary Merrigan
Name/Title:	Attorney-in-Fact for Andrew M. Weiss***
Date:	05/11/2026

Comments accompanying signature: ***Duly authorized under Power of Attorney incorporated herein by reference to the exhibit to the Form 13G/A filed by Weiss Asset Management LP on February 3, 2023 in respect of its holding in DEEP MEDICINE ACQUISITION CORP.

Exhibit Information

Joint Filing Agreement