Company Analysis

Affiliated Managers Group (AMG)

NYSE: AMG · Investment Advice · West Palm Beach, FL · filing with the SEC since 1997
Grade5.0
◀ Past 5.9● Present 5.1▶ Future 4.0

Filings

313 filings since 2017 beside 455 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 40 days after the quarter ended. The proxy statement was last filed Apr 17, 2026.

Filings a yearinsider forms included
8089788073908364
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 7 times in the last 36 months, the newest Feb 26, 2026.
Insider forms 455

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 9, 2026 10-Q Quarterly report Sep 30, 2026
Nov 9, 2026 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Aug 28, 2026 N-PX Proxy voting record Jun 30, 2026
Aug 13, 2026 13F-NT Holdings notice, as a money manager Jun 30, 2026
Aug 12, 2026 SCHEDULE 13G/A Large holder update, amended
Aug 7, 2026 10-Q Quarterly report Jun 30, 2026
Jul 30, 2026 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Jun 9, 2026 8-K items 1.01, 2.03, 9.01 Major agreement signed; New debt or obligation taken on · Current report
May 28, 2026 8-K item 5.07 Shareholder vote · Current report May 27, 2026
May 14, 2026 13F-NT Holdings notice, as a money manager Mar 31, 2026
May 7, 2026 10-Q Quarterly report Mar 31, 2026
May 1, 2026 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Apr 29, 2026 SCHEDULE 13G Large holder notice
Apr 28, 2026 SCHEDULE 13G Large holder notice
Apr 17, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 17, 2026 DEFA14A Extra proxy material
Apr 17, 2026 DEF 14A Proxy statement May 27, 2026
Mar 26, 2026 SCHEDULE 13G/A Large holder update, amended
Mar 5, 2026 SCHEDULE 13G/A Large holder update, amended
Feb 26, 2026 8-K items 5.02, 7.01, 9.01 Officer or director change; Investor disclosure (Regulation FD) · Current report Feb 22, 2026
Feb 17, 2026 10-K Annual report Dec 31, 2025
Feb 13, 2026 13F-NT Holdings notice, as a money manager Dec 31, 2025
Feb 13, 2026 SCHEDULE 13G/A Large holder update, amended
Feb 12, 2026 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Feb 12, 2026 8-K item 5.02 Officer or director change · Current report Feb 10, 2026
Dec 11, 2025 8-K items 1.01, 2.03, 9.01 Major agreement signed; New debt or obligation taken on · Current report Dec 8, 2025
Dec 10, 2025 424B5 Shelf offering
Dec 8, 2025 FWP Offering communication
Dec 8, 2025 8-K item 8.01 Other event · Current report
Dec 8, 2025 424B5 Shelf offering
Nov 13, 2025 13F-NT Holdings notice, as a money manager Sep 30, 2025
Nov 7, 2025 SCHEDULE 13G/A Large holder update, amended
Nov 6, 2025 10-Q Quarterly report Sep 30, 2025
Nov 3, 2025 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Oct 30, 2025 SCHEDULE 13G/A Large holder update, amended
Oct 30, 2025 SCHEDULE 13G/A Large holder update, amended
Aug 29, 2025 N-PX Proxy voting record Jun 30, 2025
Aug 14, 2025 8-K items 5.02, 7.01, 9.01 Officer or director change; Investor disclosure (Regulation FD) · Current report Aug 11, 2025
Aug 13, 2025 13F-NT Holdings notice, as a money manager Jun 30, 2025
Aug 7, 2025 10-Q Quarterly report Jun 30, 2025
40 of 313 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton AMG · research, not advice