Affiliated Managers Group, Inc. SEC filings MGRB
Affiliated Managers Group, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to May 7, 2013. Its latest annual report, Form ARS, was filed on Apr 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Jul 30, 2026 (results of operations, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4/A | Primary document | Sep 25, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 12, 2026 | — |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Jul 30, 2026 |
| 144 | Notice of proposed sale | Jun 30, 2026 | — |
| 3/A | Primary document | Jun 26, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 8, 2026 |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | May 8, 2026 | May 8, 2026 |
| 4 | Insider transaction | May 8, 2026 | May 6, 2026 |
| 144 | Notice of proposed sale | May 8, 2026 | — |
| 4 | Insider transaction | May 6, 2026 | May 6, 2026 |
| 144 | Notice of proposed sale | May 6, 2026 | — |
| 4 | Insider transaction | May 5, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 28, 2026 | — |
| 3 | Initial insider ownership | Apr 24, 2026 | Apr 15, 2026 |
| 3 | Initial insider ownership | Apr 6, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 144 | Notice of proposed sale | Mar 9, 2026 | — |
| 144 | Notice of proposed sale | Mar 9, 2026 | — |
| 144 | Notice of proposed sale | Mar 6, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 5, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 4 | Insider transaction | Dec 23, 2025 | Dec 23, 2025 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 25, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 7, 2025 | — |
| 4 | Insider transaction | Nov 5, 2025 | Nov 3, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2025 | — |
| 3 | Initial insider ownership | Oct 3, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 9, 2025 | Sep 8, 2025 |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 14, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 14, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 14, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 6, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2025 | — |
| 4 | Insider transaction | May 13, 2025 | May 9, 2025 |
| 4 | Insider transaction | May 13, 2025 | May 12, 2025 |
| 4 | Insider transaction | May 13, 2025 | May 12, 2025 |
| 144 | Notice of proposed sale | Mar 10, 2025 | — |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 6, 2024 | — |
| 4 | Insider transaction | Oct 18, 2024 | Oct 16, 2024 |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 4 | Insider transaction | Oct 4, 2024 | Oct 2, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 16, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 16, 2024 |
| 144 | Notice of proposed sale | Aug 19, 2024 | — |
| 144 | Notice of proposed sale | Aug 16, 2024 | — |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 15, 2024 |
| 144 | Notice of proposed sale | Aug 16, 2024 | — |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 7, 2024 | — |
| 3 | Initial insider ownership | May 24, 2024 | May 22, 2024 |
| 3 | Initial insider ownership | Apr 5, 2024 | Apr 1, 2024 |
| 3 | Initial insider ownership | Apr 5, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Mar 28, 2024 | Mar 28, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 24, 2024 | — |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Dec 6, 2023 | — |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 3 | Initial insider ownership | Sep 28, 2023 | Sep 25, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 28, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 29, 2023 |
| 4 | Insider transaction | Mar 17, 2023 | Mar 16, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 5, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 8, 2023 | Feb 6, 2023 |
| 4 | Insider transaction | Feb 8, 2023 | Feb 6, 2023 |
| 4 | Insider transaction | Feb 8, 2023 | Feb 6, 2023 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Investment Advice (SIC 6282)
- Listed as
- AMG (NYSE), MGR (NYSE), MGRB (NYSE), MGRD (NYSE), MGRE (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Jupiter, FL
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1004434
- Former names
- AFFILIATED MANAGERS GROUP INC (until Sep 20, 2013)
Other Investment Advice companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.