Affiliated Managers Group, Inc. SEC filings AMG
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 |
|---|---|---|---|
| N-PX | Filing | Aug 28, 2026 | Jun 30, 2026 |
| 13F-NT | Filing | Aug 13, 2026 | Jun 30, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 30, 2026 | Jul 30, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 9, 2026 | Jun 9, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 28, 2026 | May 27, 2026 |
| 13F-NT | Filing | May 14, 2026 | Mar 31, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
May 1, 2026 | May 1, 2026 |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 17, 2026 | — |
| DEF 14A | Proxy statement | Apr 17, 2026 | May 27, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 26, 2026 | Feb 22, 2026 |
| 10-K | Annual report | Feb 17, 2026 | Dec 31, 2025 |
| 13F-NT | Filing | Feb 13, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 12, 2026 | Feb 12, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 12, 2026 | Feb 10, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 11, 2025 | Dec 8, 2025 |
| 424B5 | Prospectus supplement | Dec 10, 2025 | — |
| FWP | Free writing prospectus | Dec 8, 2025 | — |
| 8-K |
Current report
Other events
|
Dec 8, 2025 | Dec 8, 2025 |
| 424B5 | Prospectus supplement | Dec 8, 2025 | — |
| 13F-NT | Filing | Nov 13, 2025 | Sep 30, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 3, 2025 | Nov 3, 2025 |
| N-PX | Filing | Aug 29, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 14, 2025 | Aug 11, 2025 |
| 13F-NT | Filing | Aug 13, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 31, 2025 | Jul 31, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 6, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2025 | May 22, 2025 |
| 13F-NT | Filing | May 13, 2025 | Mar 31, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
May 8, 2025 | May 8, 2025 |
| ARS | Annual report to shareholders | Apr 11, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | May 22, 2025 |
| 8-K |
Current report
Other events
|
Mar 7, 2025 | Mar 7, 2025 |
| 424B5 | Prospectus supplement | Mar 7, 2025 | — |
| S-3ASR | Automatic shelf registration | Feb 28, 2025 | — |
| 10-K | Annual report | Feb 14, 2025 | Dec 31, 2024 |
| 13F-NT | Filing | Feb 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 6, 2025 | Feb 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 3, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Nov 15, 2024 | Nov 15, 2024 |
| 13F-NT | Filing | Nov 13, 2024 | Sep 30, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 4, 2024 | Nov 4, 2024 |
| N-PX | Filing | Aug 30, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 20, 2024 | Aug 15, 2024 |
| 424B5 | Prospectus supplement | Aug 16, 2024 | — |
| FWP | Free writing prospectus | Aug 16, 2024 | — |
| 424B5 | Prospectus supplement | Aug 15, 2024 | — |
| 13F-NT | Filing | Aug 13, 2024 | Jun 30, 2024 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Officer or director change
|
Aug 2, 2024 | Aug 2, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 29, 2024 | Jul 29, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2024 | May 22, 2024 |
| 13F-NT | Filing | May 14, 2024 | Mar 31, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
May 6, 2024 | May 6, 2024 |
| ARS | Annual report to shareholders | Apr 12, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 12, 2024 | — |
| DEF 14A | Proxy statement | Apr 12, 2024 | May 22, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 25, 2024 | Mar 22, 2024 |
| CERT | Nyse certification | Mar 22, 2024 | — |
| 8-A12B | Filing | Mar 20, 2024 | — |
| 8-K |
Current report
Material agreement, New debt
|
Mar 20, 2024 | Mar 14, 2024 |
| 424B5 | Prospectus supplement | Mar 15, 2024 | — |
| FWP | Free writing prospectus | Mar 15, 2024 | — |
| 424B3 | Prospectus | Mar 14, 2024 | — |
| 10-K | Annual report | Feb 16, 2024 | Dec 31, 2023 |
| 13F-NT | Filing | Feb 14, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 5, 2024 | Feb 5, 2024 |
| 13F-NT | Filing | Nov 13, 2023 | Sep 30, 2023 |
| 10-Q | Quarterly report | Nov 6, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 6, 2023 | Nov 6, 2023 |
| 8-K |
Current report
Officer or director change
|
Sep 25, 2023 | Sep 25, 2023 |
| 13F-NT | Filing | Aug 14, 2023 | Jun 30, 2023 |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 26, 2023 | Jul 26, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2023 | May 25, 2023 |
| 13F-NT | Filing | May 12, 2023 | Mar 31, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
May 1, 2023 | May 1, 2023 |
| ARS | Annual report to shareholders | Apr 14, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 14, 2023 | — |
| DEF 14A | Proxy statement | Apr 14, 2023 | — |
| 10-K | Annual report | Feb 17, 2023 | Dec 31, 2022 |
| 13F-NT | Filing | Feb 13, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 6, 2023 | Feb 6, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 30, 2022 | Dec 29, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Nov 21, 2022 | Nov 18, 2022 |
| 13F-NT | Filing | Nov 14, 2022 | Sep 30, 2022 |
| 10-Q | Quarterly report | Nov 7, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 7, 2022 | Nov 7, 2022 |
| 8-K |
Current report
Other events
|
Oct 18, 2022 | Oct 18, 2022 |
| 13F-NT | Filing | Aug 10, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Aug 1, 2022 | Aug 1, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 31, 2022 | May 27, 2022 |
| 8-K |
Current report
Other events
|
May 27, 2022 | May 27, 2022 |
| 424B5 | Prospectus supplement | May 27, 2022 | — |
| 13F-NT | Filing | May 13, 2022 | Mar 31, 2022 |
| 10-Q | Quarterly report | May 6, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
May 2, 2022 | May 2, 2022 |
| DEFA14A | Additional proxy material | Apr 15, 2022 | — |
| DEF 14A | Proxy statement | Apr 15, 2022 | May 27, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 16, 2022 | Mar 16, 2022 |
| S-3ASR | Automatic shelf registration | Mar 1, 2022 | — |
| 10-K | Annual report | Feb 18, 2022 | Dec 31, 2021 |
| 13F-NT | Filing | Feb 11, 2022 | Dec 31, 2021 |
| UPLOAD | Letter from the SEC | Feb 9, 2022 | — |
| CORRESP | Letter to the SEC | Feb 8, 2022 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 7, 2022 | Feb 7, 2022 |
| UPLOAD | Letter from the SEC | Jan 28, 2022 | — |
| CORRESP | Letter to the SEC | Jan 21, 2022 | — |
| UPLOAD | Letter from the SEC | Dec 22, 2021 | — |
| 13F-NT | Filing | Nov 12, 2021 | Sep 30, 2021 |
| 10-Q | Quarterly report | Nov 5, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 1, 2021 | Nov 1, 2021 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 26, 2021 | Oct 25, 2021 |
| 13F-NT | Filing | Aug 13, 2021 | Jun 30, 2021 |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 28, 2021 | Jul 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 21, 2021 | Jul 19, 2021 |
| CERT | Nyse certification | Jul 20, 2021 | — |
| 8-A12B | Filing | Jul 13, 2021 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jul 13, 2021 | Jul 8, 2021 |
| 424B5 | Prospectus supplement | Jul 9, 2021 | — |
| FWP | Free writing prospectus | Jul 8, 2021 | — |
| 424B5 | Prospectus supplement | Jul 8, 2021 | — |
| 8-K |
Current report
Material agreement, Shareholder vote results
|
Jun 11, 2021 | Jun 9, 2021 |
| DEFA14A | Additional proxy material | May 28, 2021 | — |
| DEFA14A | Additional proxy material | May 26, 2021 | — |
| 13F-NT | Filing | May 14, 2021 | Mar 31, 2021 |
| 10-Q | Quarterly report | May 7, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Other events
|
May 3, 2021 | May 3, 2021 |
| DEFA14A | Additional proxy material | Apr 19, 2021 | — |
| DEF 14A | Proxy statement | Apr 19, 2021 | Jun 9, 2021 |
| 10-K | Annual report | Feb 19, 2021 | Dec 31, 2020 |
| 13F-NT | Filing | Feb 12, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 8, 2021 | Feb 8, 2021 |
| 8-K |
Current report
Officer or director change
|
Jan 8, 2021 | Jan 8, 2021 |
| 8-K |
Current report
Material agreement
|
Jan 8, 2021 | Jan 8, 2021 |
| 13F-NT | Filing | Nov 13, 2020 | Sep 30, 2020 |
| 10-Q | Quarterly report | Oct 30, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 26, 2020 | Oct 26, 2020 |
| 8-K |
Current report
Officer or director change
|
Oct 1, 2020 | Sep 28, 2020 |
| CERT | Nyse certification filing | Sep 24, 2020 | — |
| 8-A12B | Filing | Sep 23, 2020 | — |
| 8-K |
Current report
Material agreement, New debt
|
Sep 23, 2020 | Sep 17, 2020 |
| 424B5 | Prospectus supplement | Sep 18, 2020 | — |
| FWP | Free writing prospectus | Sep 18, 2020 | — |
| 424B5 | Prospectus supplement | Sep 17, 2020 | — |
| 13F-NT | Filing | Aug 13, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 3, 2020 | Aug 3, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 3, 2020 | Aug 1, 2020 |
| 10-Q | Quarterly report | Jul 31, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 27, 2020 | Jul 27, 2020 |
| S-8 | Employee stock plan registration | Jul 24, 2020 | — |
| 8-K |
Current report
Officer or director change
|
Jul 24, 2020 | Jul 23, 2020 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 12, 2020 | Jun 9, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 5, 2020 | Jun 2, 2020 |
| DEFA14A | Additional proxy material | Jun 4, 2020 | — |
| 424B5 | Prospectus supplement | Jun 3, 2020 | — |
| FWP | Free writing prospectus | Jun 3, 2020 | — |
| 424B5 | Prospectus supplement | Jun 2, 2020 | — |
| DEFA14A | Additional proxy material | May 18, 2020 | — |
| 8-K |
Current report
Officer or director change
|
May 15, 2020 | May 11, 2020 |
| 13F-NT | Filing | May 14, 2020 | Mar 31, 2020 |
| 10-Q | Quarterly report | May 4, 2020 | Mar 31, 2020 |
| DEFA14A | Additional proxy material | Apr 28, 2020 | — |
| DEF 14A | Proxy statement | Apr 28, 2020 | Jun 9, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 28, 2020 | Apr 28, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Apr 27, 2020 | Apr 27, 2020 |
| 10-K | Annual report | Feb 28, 2020 | Dec 31, 2019 |
| 13F-NT | Filing | Feb 14, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 3, 2020 | Feb 3, 2020 |
| 13F-NT | Filing | Nov 14, 2019 | Sep 30, 2019 |
| 10-Q | Quarterly report | Nov 1, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 28, 2019 | Oct 28, 2019 |
| 13F-NT | Filing | Aug 14, 2019 | Jun 30, 2019 |
| 10-Q | Quarterly report | Aug 1, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 29, 2019 | Jul 29, 2019 |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2019 | May 29, 2019 |
| 13F-NT | Filing | May 14, 2019 | Mar 31, 2019 |
| 10-Q | Quarterly report | May 9, 2019 | Mar 31, 2019 |
| DEFA14A | Additional proxy material | May 6, 2019 | — |
| 8-K |
Current report
Officer or director change
|
May 6, 2019 | May 1, 2019 |
| 8-K |
Current report
Results of operations, Other events
|
May 6, 2019 | May 6, 2019 |
| DEFA14A | Additional proxy material | Apr 17, 2019 | — |
| DEF 14A | Proxy statement | Apr 17, 2019 | May 29, 2019 |
| UPLOAD | Letter from the SEC | Apr 16, 2019 | — |
| CORRESP | Letter to the SEC | Apr 12, 2019 | — |
| UPLOAD | Letter from the SEC | Apr 4, 2019 | — |
| 10-K/A | Amended annual report | Apr 1, 2019 | Dec 31, 2018 |
| CERT | Nyse certification filing | Mar 27, 2019 | — |
| 8-A12B | Filing | Mar 27, 2019 | — |
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.