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Acadian Asset Management

Acadian Asset Management (NYSE: AAMI) insider transactions

In the twelve months to 10 November 2026, executives and directors of Acadian Asset Management reported 9 open-market sales of 2,064,058 shares ($157.7m) and 0 open-market purchases, by 5 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Acadian Asset Management shares reported on Form 4
DateInsiderRoleTransactionSharesPriceHeld afterFiling
4 August 2026Wiater ChristinaPaoOpen-market sale−244$92.360Form 4
3 August 2026Wiater ChristinaPaoOpen-market sale−7,978$86.6117,636Form 4
3 August 2026Wiater ChristinaPaoOpen-market sale−17,389$87.49247Form 4
3 August 2026Wiater ChristinaPaoOpen-market sale−3$88.11244Form 4
17 June 2026Paulson & Co. Inc.—Open-market sale−1,900,000$77.255,843,282Form 4
15 June 2026Trebbi BarbaraDirectorGift−10,260—28,797Form 4
15 June 2026Trebbi BarbaraDirectorGift+10,260—10,260Form 4
14 May 2026Trebbi BarbaraDirectorOption exercise+3,286—39,057Form 4
14 May 2026Chersi Robert JDirectorOption exercise+3,286—3,286Form 4
14 May 2026Paulson JohnDirectorOption exercise+5,750—29,510Form 4
4 May 2026Hart Richard JonathanCLO and CAOOpen-market sale−88,792$66.8785,071Form 4
4 May 2026Hart Richard JonathanCLO and CAOOpen-market sale−11,208$67.7373,863Form 4
15 February 2026Hart Richard JonathanCLO and CAOOption exercise+9,550—178,481Form 4
15 February 2026Hart Richard JonathanCLO and CAOShares withheld for tax−4,618$51.85173,863Form 4
15 February 2026Wiater ChristinaPfo / PaoOption exercise+5,180—27,135Form 4
15 February 2026Wiater ChristinaPfo / PaoShares withheld for tax−1,521$51.8525,614Form 4
14 February 2026Hart Richard JonathanCLO and CAOOption exercise+5,755—171,713Form 4
14 February 2026Hart Richard JonathanCLO and CAOShares withheld for tax−2,782$51.85168,931Form 4
14 February 2026Wiater ChristinaPfo / PaoOption exercise+4,006—23,131Form 4
14 February 2026Wiater ChristinaPfo / PaoShares withheld for tax−1,176$51.8521,955Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Acadian Asset Management page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.