Paulson & Co. sells 1.9M Acadian Asset (AAMI) shares in block trade

Rhea-AI Filing Summary

Paulson & Co. Inc. filed Amendment No. 7 to its Schedule 13D on June 22, 2026 regarding Acadian Asset Management Inc. common stock. Paulson reports beneficial ownership of 5,843,282 shares, representing 16.4% of the outstanding common stock, based on 35,628,988 shares outstanding as of May 5, 2026.

As of this amendment, Paulson has sole voting and dispositive power over these shares. On June 17, 2026, the reporting person sold 1,900,000 shares in a block trade at $77.25 per share. The filing notes that the underlying pecuniary interest in all reported securities is owned by the funds Paulson advises, and Paulson disclaims beneficial ownership except for Section 13(d) purposes.

Insights

Equity ownership analyst

Paulson reports a 16.4% stake in AAMI after a 1.9M-share sale.

The amendment shows Paulson & Co. Inc. now beneficially owns 5,843,282 Acadian Asset shares, or 16.4% of the company, using 35,628,988 shares outstanding as of May 5, 2026 as the reference base.

On June 17, 2026, the reporting person executed a 1,900,000-share block trade at $77.25 per share, indicating a sizeable reduction in the position managed for its funds. Paulson retains sole voting and dispositive power over the remaining shares while disclaiming pecuniary ownership beyond Section 13(d) reporting purposes.

Key Figures

Beneficial ownership: 5,843,282 shares Ownership percentage: 16.4% Shares outstanding: 35,628,988 shares +4 more

7 metrics

Beneficial ownership 5,843,282 shares Shares of Acadian Asset common stock beneficially owned by Paulson

Ownership percentage 16.4% Percent of Acadian Asset common stock class represented by 5,843,282 shares

Shares outstanding 35,628,988 shares Acadian Asset common shares outstanding as of May 5, 2026

Block trade size 1,900,000 shares Shares sold on June 17, 2026 in a block trade

Block trade price $77.25 per share Sale price for the 1,900,000-share block trade on June 17, 2026

Sole voting power 5,843,282 shares Shares over which Paulson has sole power to vote or direct the vote

Sole dispositive power 5,843,282 shares Shares over which Paulson has sole power to dispose or direct disposition

Key Terms

beneficially owned, block trade, Schedule 13D, dispositive power, +2 more

6 terms

beneficially owned financial

"As of the date hereof, the Reporting Person may be deemed to have beneficially owned approximately 16.4% of the outstanding Common Stock."

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.

block trade financial

"On June 17, 2026, the Reporting Person sold in a block trade 1,900,000 shares of Common Stock at a price of $77.25 per share."

A block trade is a large, privately arranged sale or purchase of a company's shares or bonds between big investors, often negotiated to avoid upsetting the public market price. Think of it like selling a truckload of goods directly to one buyer instead of unloading it on a busy street — it moves a lot of supply at once and can signal shifting demand, affect immediate liquidity, and influence short-term stock prices.

Schedule 13D regulatory

"The following constitutes Amendment No. 7 to the previously filed by the undersigned ("Amendment No. 7") with respect to Acadian Asset Management Inc."

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

dispositive power financial

"Sole power to dispose or direct the disposition: 5,843,282 (see Note 1)."

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

investment advice financial

"Paulson furnishes investment advice to and manages the Funds."

pecuniary interest financial

"The pecuniary interest of all securities reported in this is owned by the Funds."

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 06/22/2026 - 05:12 PM Accepted by SEC EDGAR 06/22/2026 - 05:12 PM Learn about SEC filing dates

FAQ

What ownership stake in Acadian Asset Management Inc. (AAMI) does Paulson & Co. report?

Paulson & Co. Inc. reports beneficial ownership of 5,843,282 shares of Acadian Asset Management Inc., representing approximately 16.4% of the outstanding common stock, based on 35,628,988 shares outstanding as of May 5, 2026 disclosed in a Form 10-Q.

How many Acadian Asset (AAMI) shares did Paulson sell and at what price?

On June 17, 2026, the reporting person sold 1,900,000 shares of Acadian Asset common stock in a block trade at a price of $77.25 per share. This transaction is specifically disclosed in Item 5(c) of the amended Schedule 13D.

What voting and dispositive power does Paulson have over AAMI shares?

Paulson & Co. Inc. reports sole power to vote or direct the vote over 5,843,282 Acadian Asset shares and sole power to dispose or direct the disposition of the same 5,843,282 shares. It reports zero shared voting or shared dispositive power in this amendment.

On what share count is Paulson’s 16.4% AAMI ownership based?

The 16.4% ownership figure is calculated using 35,628,988 Acadian Asset common shares outstanding as of May 5, 2026. This outstanding share count comes from the company’s Quarterly Report on Form 10-Q filed with the SEC on May 7, 2026.

Who has the pecuniary interest in the AAMI shares reported by Paulson & Co.?

The filing states the pecuniary interest in all reported Acadian Asset securities is owned by the funds Paulson advises or manages. Paulson disclaims beneficial ownership of these securities except for purposes of determining beneficial ownership under Section 13(d) of the Exchange Act.

What does Amendment No. 7 to Paulson’s AAMI Schedule 13D change?

Amendment No. 7 restates Item 5 of the prior Schedule 13D to update Paulson’s beneficial ownership at 5,843,282 shares, or 16.4% of the class, and discloses the June 17, 2026 block sale of 1,900,000 shares at $77.25 per share.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 7)

Acadian Asset Management Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share (the "Common Stock")

(Title of Class of Securities)

10948W103

(CUSIP Number)

Kelly Zelezen
Kleinberg, Kaplan, Wolff & Cohen, P.C., 500 Fifth Avenue
New York, NY, 10110
2129866000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

06/17/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): 10948W103

1

Name of reporting person

Paulson & Co. Inc.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 5,843,282.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 5,843,282.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

5,843,282.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

16.4 %

14

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person:

Note to Items 7, 9, 11: See Note 1 to Item 5 below

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, par value $0.001 per share (the "Common Stock")
(b)	Name of Issuer: Acadian Asset Management Inc.
(c)	Address of Issuer's Principal Executive Offices: 200 State Street, Suite 601A, Boston, MASSACHUSETTS , 02109.
Item 1 Comment: The following constitutes Amendment No. 7 to the Schedule 13D previously filed by the undersigned ("Amendment No. 7") with respect to Acadian Asset Management Inc. This Amendment No. 7 amends the Schedule 13D as specifically set forth herein.
Item 5.	Interest in Securities of the Issuer
(a)	Item 5 of the Schedule 13D is hereby amended and restated in its entirety as follows: (a) The aggregate percentage of Common Stock reported owned by the Reporting Person is based upon 35,628,988 shares of Common Stock outstanding as of May 5, 2026, as disclosed in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities Exchange Commission on May 7, 2026. As of the date hereof, the Reporting Person may be deemed to have beneficially owned approximately 16.4% of the outstanding Common Stock.
(b)	Number of shares of Common Stock as to which Paulson has: (i) Sole power to vote or direct the vote: 5,843,282 (see Note 1). (ii) Shared power to vote or direct the vote: 0 (iii) Sole power to dispose or direct the disposition: 5,843,282 (see Note 1). (iv) Shared power to dispose or direct the disposition: 0
(c)	On June 17, 2026, the Reporting Person sold in a block trade 1,900,000 shares of Common Stock at a price of $77.25 per share.
(d)	See Note 1.
(e)	Not applicable. Note 1: Paulson furnishes investment advice to and manages the Funds. In its role as investment advisor, or manager, as the case may be, Paulson possesses voting and investment power over the securities of the Issuer described in this Schedule 13D that are owned by the Funds. The pecuniary interest of all securities reported in this Schedule 13D is owned by the Funds. Except for the purposes of determining beneficial ownership under Section 13(d) of the Securities Exchange Act of 1934, as amended, Paulson disclaims beneficial ownership of all securities reported in this Schedule 13D. For reporting purposes, the aggregate amount of Common Shares deemed to be beneficially owned by the Reporting Person is calculated based on an aggregate 5,843,282 Common Shares held by the Reporting Person as of the date hereof.

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.

Paulson & Co. Inc.

Signature:	/s/ Stuart L. Merzer
Name/Title:	Stuart L. Merzer, General Counsel & Chief Compliance Officer
Date:	06/22/2026