AAMI director granted 1,288 restricted stock units

Chersi Robert J reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Chersi Robert J reported acquisition or exercise transactions in this Form 4 filing.

Acadian Asset Management Inc. director Robert J. Chersi received a grant of 1,288 restricted stock units on June 12, 2026 as equity compensation. Each unit represents one share of common stock and vests on the earlier of June 12, 2027 or the 2027 annual meeting of stockholders. Following this grant, he holds 1,288 restricted stock units directly.

Insider Trade Summary

Grant/Award: 1,288 shares

Grant/Award 1 txn

Insider Chersi Robert J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	1,288	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 1,288 contracts (Direct)

Footnotes (3)

1. F1. Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.
2. F2. Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan.
3. F3. On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

Key Figures

RSUs granted: 1,288 units Underlying shares: 1,288 shares Shares after transaction: 1,288 units +2 more

5 metrics

RSUs granted 1,288 units Restricted stock units granted on June 12, 2026

Underlying shares 1,288 shares Common stock underlying the RSUs

Shares after transaction 1,288 units Total restricted stock units held following grant

Vesting date June 12, 2027 Or earlier 2027 annual meeting of stockholders

Exercise price $0.00 per unit Restricted stock units granted at no cash cost

Key Terms

Restricted Stock Units, Equity Incentive Plan, annual meeting of stockholders

3 terms

Restricted Stock Units financial

"Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Equity Incentive Plan financial

"Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan."

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

annual meeting of stockholders financial

"vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Acadian Asset Management Inc. (AAMI) report?

Acadian Asset Management Inc. reported that director Robert J. Chersi received 1,288 restricted stock units as an equity award. The Form 4 shows this as a grant, not an open-market purchase or sale, reflecting routine director compensation rather than a trading decision.

How many restricted stock units were granted to Robert J. Chersi at AAMI?

Robert J. Chersi was granted 1,288 restricted stock units. Each restricted stock unit represents a right to receive one share of Acadian Asset Management Inc. common stock, aligning director compensation with shareholder interests through stock-based incentives instead of cash.

When do the newly granted AAMI restricted stock units vest?

The 1,288 restricted stock units vest on the earlier of June 12, 2027 or the date of Acadian Asset Management Inc.’s 2027 annual meeting of stockholders. This time-based vesting encourages continued board service through the next annual meeting cycle.

What type of security was reported in this AAMI Form 4 filing?

The Form 4 reports restricted stock units as the security granted to director Robert J. Chersi. These units are a form of stock-based compensation that convert into shares of Acadian Asset Management Inc. common stock upon vesting, rather than being purchased on the market.

Under which plan were the AAMI restricted stock units granted?

The 1,288 restricted stock units were granted under the Acadian Asset Management Inc. 2026 Equity Incentive Plan. This plan provides stock-based awards such as restricted stock units to align directors’ and employees’ interests with long-term shareholder value.

Does the AAMI director hold the restricted stock units directly or indirectly?

The filing indicates that Robert J. Chersi holds the 1,288 restricted stock units directly. The ownership code is shown as direct, meaning the award is recorded in his own name rather than through a trust, partnership, or other entity.

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

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Accepted by SEC EDGAR 06/15/2026 - 06:47 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chersi Robert J

(Last) (First) (Middle)

C/O ACADIAN ASSET MANAGEMENT INC.

200 STATE STREET, SUITE 601A

(Street)

BOSTON MASSACHUSETTS 02109

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Acadian Asset Management Inc. [ AAMI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units(1)	(1)	06/12/2026		A		1,288(2)		(3)	(3)	Common Stock	1,288	$0	1,288	D

Explanation of Responses:

1. Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

2. Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan.

3. On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

Remarks:

	/s/ Richard J. Hart, By POA for Robert J. Chersi	06/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)