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 |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 10, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 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 | — |
| 8-K |
Current report
Results of operations
|
Jul 30, 2026 | Jul 30, 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 |
| S-8 POS | Filing | Jun 11, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 11, 2026 | Jun 11, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
May 19, 2026 | May 19, 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 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | May 5, 2026 | May 4, 2026 |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| ARS | Annual report to shareholders | Apr 29, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2026 | — |
| DEF 14A | Proxy statement | Apr 29, 2026 | Jun 11, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 10-K | Annual report | Feb 27, 2026 | Dec 31, 2025 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 5, 2026 | Feb 5, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 30, 2026 | — |
| 8-K |
Current report
Other events
|
Nov 25, 2025 | Nov 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Other events
|
Oct 30, 2025 | Oct 28, 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 | — |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jun 10, 2025 | Jun 10, 2025 |
| 3 | Initial insider ownership | May 29, 2025 | May 19, 2025 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 16, 2025 | May 13, 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 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 29, 2025 | — |
| ARS | Annual report to shareholders | Mar 31, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 31, 2025 | — |
| DEF 14A | Proxy statement | Mar 31, 2025 | May 13, 2025 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 6, 2025 | Feb 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 3 | Initial insider ownership | Jan 6, 2025 | Jan 1, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 6, 2025 | Dec 31, 2024 |
| 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 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Oct 1, 2024 | Sep 30, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Shareholder vote results
|
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 | Jun 10, 2024 | Jun 6, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 25, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 25, 2024 | — |
| DEF 14A | Proxy statement | Apr 25, 2024 | Jun 6, 2024 |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 1, 2024 | Feb 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 20, 2023 | Dec 18, 2023 |
| 10-Q | Quarterly report | Nov 8, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 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 | Jun 9, 2023 | Jun 7, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| 4 | Insider transaction | May 2, 2023 | May 1, 2023 |
| ARS | Annual report to shareholders | Apr 26, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 26, 2023 | — |
| DEF 14A | Proxy statement | Apr 26, 2023 | — |
| 4 | Insider transaction | Apr 3, 2023 | Mar 31, 2023 |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 2, 2023 | Feb 2, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Aug 5, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2022 | Jul 28, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2022 | Jun 7, 2022 |
| 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 |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 5, 2022 | May 5, 2022 |
| DEFA14A | Additional proxy material | Apr 19, 2022 | — |
| DEF 14A | Proxy statement | Apr 19, 2022 | Jun 7, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 8, 2022 | — |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 3, 2022 | Feb 3, 2022 |
| 25-NSE | Delisting notice | Jan 20, 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 | — |
| 8-K |
Current report
Other events
|
Dec 17, 2021 | Dec 17, 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 |
| SC TO-I/A | Filing | Dec 9, 2021 | — |
| SC TO-I/A | Filing | Dec 7, 2021 | — |
| 4 | Insider transaction | Nov 30, 2021 | Nov 29, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 26, 2021 |
| SC TO-I/A | Filing | Nov 8, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 5, 2021 | — |
| 10-Q | Quarterly report | Nov 5, 2021 | Sep 30, 2021 |
| SC TO-I | Filing | Nov 4, 2021 | — |
| SC TO-C | Filing | Nov 4, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Nov 4, 2021 | Nov 3, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2021 | Oct 28, 2021 |
| 10-Q | Quarterly report | Aug 9, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2021 | Jul 29, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 25, 2021 | Jun 23, 2021 |
| 4 | Insider transaction | Jun 25, 2021 | Jun 23, 2021 |
| 4 | Insider transaction | Jun 25, 2021 | Jun 23, 2021 |
| 8-K |
Current report
Acquisition or sale of assets
|
Jun 4, 2021 | Jun 2, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 10, 2021 | May 9, 2021 |
| 10-Q | Quarterly report | May 7, 2021 | Mar 31, 2021 |
| DEFA14A | Additional proxy material | Apr 30, 2021 | — |
| DEF 14A | Proxy statement | Apr 30, 2021 | Jun 23, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2021 | Apr 29, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Mar 31, 2021 | Mar 30, 2021 |
| 10-K | Annual report | Mar 1, 2021 | Dec 31, 2020 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Feb 4, 2021 | Feb 4, 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 |
| UPLOAD | Letter from the SEC | Dec 17, 2020 | — |
| CORRESP | Letter to the SEC | Dec 11, 2020 | — |
| UPLOAD | Letter from the SEC | Dec 1, 2020 | — |
| 8-K |
Current report
Acquisition or sale of assets
|
Nov 17, 2020 | Nov 17, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 10, 2020 |
| 10-Q | Quarterly report | Nov 6, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2020 | Oct 29, 2020 |
| 8-K |
Current report
Material agreement
|
Sep 4, 2020 | Sep 3, 2020 |
Showing 200 filings, the most recent 200. 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.