Christina Wiater - 03 Aug 2026 Form 4 Insider Report for Acadian Asset Management Inc. (AAMI)

Reporting relationship: PAO
Issuer ticker: AAMI
Reported as of: 03 Aug 2026
Net transaction value: -$2,235,161
SEC form: 4
Accepted by SEC: 05 Aug 2026, 16:07:47 UTC
Prior SEC filing: 18 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Richard J. Hart, By POA for Christina Wiater

Key filing fact

Christina Wiater filed Form 4 for Acadian Asset Management Inc. (AAMI) on 05 Aug 2026.

Key facts

This page summarizes Christina Wiater's Form 4 filing for Acadian Asset Management Inc. (AAMI).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 05 Aug 2026, 16:07.

Change

Previous filing in this sequence was filed on 18 Feb 2026.
Current net transaction value: -$2,235,161.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001806909 Primary reporting owner

Wiater Christina

Relationship: PAO
Address: 260 FRANKLIN STREET, BOSTON
Signature: /s/ Richard J. Hart, By POA for Christina Wiater
Signature date: 05 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AAMI transaction

Common Stock

Sale

Transaction value: $690,960
Shares: -7,978
Change %: -31%
Price: $86.61
Shares after: 17,636
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F1

AAMI transaction

Common Stock

Sale

Transaction value: $1,521,402
Shares: -17,389
Change %: -99%
Price: $87.49
Shares after: 247
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F2

AAMI transaction

Common Stock

Sale

Transaction value: $264
Shares: -3
Change %: -1.2%
Price: $88.11
Shares after: 244
Date: 03 Aug 2026
Ownership: Direct

AAMI transaction

Common Stock

Sale

Transaction value: $22,535
Shares: -244
Change %: -100%
Price: $92.36
Shares after: 0
Date: 04 Aug 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote 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.

Footnote 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.