Updated Jul 16, 2026 · Last SEC filing 2026-06-22
Acadian Asset Management Inc. (AAMI) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-22. 3 Form 8-K material event filings were reported by AAMI in the last 90 days. 2 Form 144 notices of proposed sale were filed for AAMI stock. InsiderAlpha tracks every AAMI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001748824 |
|---|
| Form 4 filings (90d) | 8 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 2 |
| Latest Form 4 filing | 2026-06-22 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| PAULSON CO. INC. | Insider | S — Open-market sale | 1.90M | $77.25 | $146.78M | SEC | |
| Trebbi Barbara | Director | G — Bona-fide gift | 10.3K | $0.00 | — | SEC | |
| Trebbi Barbara | Director | G — Bona-fide gift | 10.3K | $0.00 | — | SEC | |
| Paulson John | Director | M — Option exercise | 5.8K | $0.00 | — | SEC | |
| Trebbi Barbara | Director | M — Option exercise | 3.3K | $0.00 | — | SEC | |
| Chersi Robert J | Director | M — Option exercise | 3.3K | $0.00 | — | SEC | |
| Hart Richard Jonathan | CLO and CAO | S — Open-market sale | 11.2K | $67.73 | $759K | SEC | |
| Hart Richard Jonathan | CLO and CAO | S — Open-market sale | 88.8K | $66.87 | $5.94M | SEC | |
| Hart Richard Jonathan | CLO and CAO | F — Tax withholding / forfeiture | 4.6K | $51.85 | $239K | SEC | |
| Hart Richard Jonathan | CLO and CAO | M — Option exercise | 9.6K | $0.00 | — | SEC | |
| Wiater Christina | PFO / PAO | M — Option exercise | 5.2K | $0.00 | — | SEC | |
| Wiater Christina | PFO / PAO | F — Tax withholding / forfeiture | 1.5K | $51.85 | $79K | SEC | |
| Hart Richard Jonathan | CLO and CAO | F — Tax withholding / forfeiture | 2.8K | $51.85 | $144K | SEC | |
| Wiater Christina | PFO / PAO | M — Option exercise | 4.0K | $0.00 | — | SEC | |
| Wiater Christina | PFO / PAO | F — Tax withholding / forfeiture | 1.2K | $51.85 | $61K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Acadian Asset Management Inc. (AAMI). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Trebbi Barbara | 5 | — |
| Paulson John | 3 | — |
| Chersi Robert J | 3 | — |
| Hart Richard Jonathan | 2 | $6.70M |
| PAULSON CO. INC. | 1 | $146.78M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in AAMI insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live AAMI dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.