Acadian Asset Management officer sells 25,614 shares

Q: What insider stock sales did Acadian Asset Management (AAMI) disclose?

Acadian Asset Management reported that officer Christina Wiater sold 25,614 shares of common stock in four transactions. The trades took place on August 3–4, 2026, and each was reported as a sale of common stock held directly.

Q: On what dates and in what amounts did Christina Wiater sell AAMI shares?

The Form 4 lists sales on August 3, 2026 of 7,978, 17,389, and 3 shares of common stock, and on August 4, 2026 a sale of 244 shares. In total, 25,614 shares were reported sold across these four transactions.

Q: At what prices were Acadian Asset Management (AAMI) shares sold in these insider trades?

Reported prices included $92.3550 per share for 244 shares, a weighted average of $86.6082 for 7,978 shares, and a weighted average of $87.4922 for 17,389 shares. Footnotes state underlying trades ranged from $86.5–$86.78 and $87.03–$87.99, respectively.

Q: How many separate sale transactions did Christina Wiater report for AAMI stock?

The Form 4 shows four separate sale transactions in Acadian Asset Management common stock. Together, these transactions account for 25,614 shares sold, all reported as sales of stock held directly by the officer rather than through an indirect ownership vehicle.

Acadian Asset Management Inc. officer Christina Wiater reported selling a total of 25,614 shares of common stock in four transactions on August 3–4, 2026.

Accepted by SEC EDGAR 08/05/2026 - 04:07 PM EDT

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Rhea-AI Filing Summary

Acadian Asset Management Inc. officer Christina Wiater reported selling a total of 25,614 shares of common stock in four transactions on August 3–4, 2026. Reported sales included 7,978 shares at a weighted average of $86.6082 and 17,389 shares at a weighted average of $87.4922, with the weighted averages reflecting multiple trades executed within stated intraday price ranges.

Insider Trade Summary

Net Seller: 25,614 shares

Net Sell 4 txns

Insider Wiater Christina

Role PAO

Sold 25,614 shs ($2.24M)

Share of Position Sold 100%

Type	Security	Shares	Price	Value
Sale	Common Stock	244	$92.355	$23K
Sale	Common Stock ^F1	7,978	$86.6082	$691K
Sale	Common Stock ^F2	17,389	$87.4922	$1.52M
Sale	Common Stock	3	$88.11	$264.33

Holdings After Transaction: Common Stock — 0 shares (Direct)

Holdings Before and After: Common Stock, 25,614 to 0 shares (Direct)

Footnotes (2)

F1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.5 to $86.78, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.
F2. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.03 to $87.99, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

Key Figures

Total shares sold: 25,614 shares August 4, 2026 sale: 244.0000 shares at $92.3550 per share August 3, 2026 weighted average price: 7,978.0000 shares at $86.6082 per share +2 more

5 metrics

Total shares sold 25,614 shares Aggregate common stock sales on August 3–4, 2026

August 4, 2026 sale 244.0000 shares at $92.3550 per share Single common stock sale transaction on August 4, 2026

August 3, 2026 weighted average price 7,978.0000 shares at $86.6082 per share Weighted average sale price; trades ranged from $86.5 to $86.78

August 3, 2026 second weighted average price 17,389.0000 shares at $87.4922 per share Weighted average sale price; trades ranged from $87.03 to $87.99

Number of sale transactions 4 Count of reported common stock sale transactions

Key Terms

weighted average price, multiple transactions, Securities and Exchange Commission

3 terms

weighted average price financial

"The price reported in column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

multiple transactions financial

"These shares were sold in multiple transactions at prices ranging from $86.5 to $86.78."

Securities and Exchange Commission regulatory

"the staff of the Securities and Exchange Commission, upon request, full information"

A national government agency that enforces rules for buying, selling and disclosing information about stocks and other investments, acting like a referee and scorekeeper for financial markets. It requires companies to share clear, regular financial and business information and investigates fraud or rule-breaking, which matters to investors because those rules and disclosures help ensure fair prices, reduce hidden risks and make it easier to compare investment choices.

FAQ

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

What insider stock sales did Acadian Asset Management (AAMI) disclose?

Acadian Asset Management reported that officer Christina Wiater sold 25,614 shares of common stock in four transactions. The trades took place on August 3–4, 2026, and each was reported as a sale of common stock held directly.

On what dates and in what amounts did Christina Wiater sell AAMI shares?

The Form 4 lists sales on August 3, 2026 of 7,978, 17,389, and 3 shares of common stock, and on August 4, 2026 a sale of 244 shares. In total, 25,614 shares were reported sold across these four transactions.

At what prices were Acadian Asset Management (AAMI) shares sold in these insider trades?

Reported prices included $92.3550 per share for 244 shares, a weighted average of $86.6082 for 7,978 shares, and a weighted average of $87.4922 for 17,389 shares. Footnotes state underlying trades ranged from $86.5–$86.78 and $87.03–$87.99, respectively.

How many separate sale transactions did Christina Wiater report for AAMI stock?

The Form 4 shows four separate sale transactions in Acadian Asset Management common stock. Together, these transactions account for 25,614 shares sold, all reported as sales of stock held directly by the officer rather than through an indirect ownership vehicle.

Were Christina Wiater’s AAMI stock sales made under a Rule 10b5-1 trading plan?

The Form 4’s Rule 10b5-1 checkbox was not marked as being pursuant to a trading plan. The accompanying footnotes describe pricing as weighted averages across multiple trades but do not indicate that a Rule 10b5-1 trading arrangement governed these transactions.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Wiater Christina

(Last)

(First)

(Middle)

260 FRANKLIN STREET

(Street)

BOSTON

MASSACHUSETTS

02110

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/03/2026		S		7,978	D	$86.6082⁽¹⁾	17,636	D
Common Stock	08/03/2026		S		17,389	D	$87.4922⁽²⁾	247	D
Common Stock	08/03/2026		S		3	D	$88.11	244	D
Common Stock	08/04/2026		S		244	D	$92.355	0	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.5 to $86.78, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

2. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.03 to $87.99, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

Remarks:

	/s/ Richard J. Hart, By POA for Christina Wiater	08/05/2026
	** 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)

Source: View Original Filing on SEC EDGAR