Acadian Asset Management Inc. SEC filings AAMI
Acadian Asset Management Inc. has 266 filings in SEC EDGAR's recent list, going back to Mar 12, 2019. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 10, 2026 | — |
| 4 | Insider transaction | Aug 5, 2026 | Aug 3, 2026 |
| 144 | Notice of proposed sale | Aug 4, 2026 | — |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 3, 2026 | — |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 22, 2026 | — |
| 144 | Notice of proposed sale | Jun 17, 2026 | — |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 5, 2026 | May 4, 2026 |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 12, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 12, 2026 | Feb 10, 2026 |
| 144 | Notice of proposed sale | Feb 11, 2026 | — |
| 144 | Notice of proposed sale | Feb 11, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 30, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 5, 2025 | — |
| 4 | Insider transaction | Sep 5, 2025 | Sep 3, 2025 |
| 144 | Notice of proposed sale | Sep 3, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| 4 | Insider transaction | Jun 10, 2025 | Jun 10, 2025 |
| 3 | Initial insider ownership | May 29, 2025 | May 19, 2025 |
| 144 | Notice of proposed sale | May 16, 2025 | — |
| 4 | Insider transaction | May 15, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 29, 2025 | — |
| 4 | Insider transaction | Feb 19, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 3 | Initial insider ownership | Jan 6, 2025 | Jan 1, 2025 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 14, 2024 | — |
| 4 | Insider transaction | Nov 13, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Sep 30, 2024 |
| 4 | Insider transaction | Jun 10, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 10, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 10, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Feb 20, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 20, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 144 | Notice of proposed sale | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | May 2, 2023 | May 1, 2023 |
| 4 | Insider transaction | Apr 3, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Feb 16, 2023 | Feb 14, 2023 |
| 4 | Insider transaction | Feb 16, 2023 | Feb 14, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| 4 | Insider transaction | Jun 8, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 8, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | May 9, 2022 | May 9, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 8, 2022 | — |
| 4 | Insider transaction | Feb 16, 2022 | Feb 14, 2022 |
| 4 | Insider transaction | Feb 16, 2022 | Feb 14, 2022 |
| 4 | Insider transaction | Feb 10, 2022 | Feb 8, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2022 | — |
| 4/A | Form 4/a | Jan 14, 2022 | Dec 15, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Dec 22, 2021 | Dec 21, 2021 |
| 4 | Insider transaction | Dec 22, 2021 | Dec 21, 2021 |
| 4 | Insider transaction | Dec 22, 2021 | Dec 21, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 22, 2021 | — |
| 4 | Insider transaction | Dec 10, 2021 | Dec 8, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 10, 2021 | — |
| 4 | Insider transaction | Dec 9, 2021 | Dec 7, 2021 |
| 4 | Insider transaction | Dec 9, 2021 | Dec 7, 2021 |
| 4 | Insider transaction | Dec 9, 2021 | Dec 7, 2021 |
| 4 | Insider transaction | Nov 30, 2021 | Nov 29, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 26, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 5, 2021 | — |
| 4 | Insider transaction | Jun 25, 2021 | Jun 23, 2021 |
| 4 | Insider transaction | Jun 25, 2021 | Jun 23, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 14, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 14, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 27, 2021 | — |
| 4 | Insider transaction | Dec 22, 2020 | Dec 21, 2020 |
| 4 | Insider transaction | Dec 22, 2020 | Dec 21, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 10, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 7, 2020 | — |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| 4 | Insider transaction | Jun 26, 2020 | Jun 24, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | May 21, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | May 11, 2020 | — |
| 3 | Initial insider ownership | Apr 23, 2020 | Apr 15, 2020 |
| 4 | Insider transaction | Apr 23, 2020 | Apr 21, 2020 |
| 3 | Initial insider ownership | Mar 26, 2020 | Mar 25, 2020 |
| 4 | Insider transaction | Feb 19, 2020 | Feb 14, 2020 |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 7, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 7, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Jan 29, 2020 | — |
| 4 | Insider transaction | Dec 30, 2019 | Dec 24, 2019 |
| 4 | Insider transaction | Dec 30, 2019 | Dec 26, 2019 |
| 4 | Insider transaction | Dec 23, 2019 | Dec 20, 2019 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 5, 2019 | — |
| 4 | Insider transaction | Sep 19, 2019 | Sep 19, 2019 |
| 4 | Insider transaction | Sep 19, 2019 | Sep 19, 2019 |
| 4 | Insider transaction | Sep 19, 2019 | Sep 19, 2019 |
| 4 | Insider transaction | Sep 19, 2019 | Sep 19, 2019 |
| 4 | Insider transaction | Aug 8, 2019 | Aug 6, 2019 |
| 3 | Initial insider ownership | Jul 31, 2019 | Jul 22, 2019 |
Showing 133 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Investment Advice (SIC 6282)
- Listed as
- AAMI (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Boston, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1748824
- Former names
- BrightSphere Investment Group Inc. (until Nov 14, 2024)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.