AFFILIATED MANAGERS GROUP, INC.

NYSE:AMGNYSE:MGRNYSE:MGRBNYSE:MGRDNYSE:MGRE

Investment Advice·WEST PALM BEACH, FL

Affiliated Managers Group, Inc. (AMG) is an American financial services firm founded in 1993 and headquartered in West Palm Beach, Florida.

CEO

Horgen Jay C.

Financials

20 shown

Type	Period	Ended	Filed
10-K	FY 2025	12/31/25	2/17/26	→
10-Q	Q3 2025	9/30/25	11/6/25	→
10-Q	Q2 2025	6/30/25	8/7/25	→
10-Q	Q1 2025	3/31/25	5/8/25	→
10-K	FY 2024	12/31/24	2/14/25	→
10-Q	Q3 2024	9/30/24	11/7/24	→
↓

Earnings Releases (8-K)

32 shown

Filed	Period
2/12/26	Q1 FY2026	→
11/3/25	Q4 FY2025	→
7/31/25	Q2 FY2025	→
5/8/25	Q2 FY2025	→
2/6/25	Q1 FY2025	→
11/4/24	Q4 FY2024	→
↓

News (8-K)

48 shown

Filed	Type	Description
2/26/26	Exec Change	Departure or Appointment of Directors or Certain Officers	→
2/12/26	Exec Change	Departure or Appointment of Directors or Certain Officers	→
12/11/25	Agreement	Entry into a Material Definitive Agreement	→
12/8/25	Other	Other Events	→
8/14/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
6/6/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
↓

Prospectuses & Registrations

40 shown

Filed	Form	Description
12/10/25	424B5	424B5	→
12/8/25	FWP	FWP	→
12/8/25	424B5	424B5	→
4/11/25	ARS	ARS	→
3/7/25	424B5	424B5	→
2/28/25	S-3ASR	S-3ASR	→
↓

Filing History(1003 filings)

TypeDateAccessionPeriodSize

144

Mar 6, 2026

0001950047-26-002306

—

4.8 KB

SCHEDULE 13G/A

Mar 5, 2026

0000102909-26-000333

—

7.0 KB

8-K

Feb 26, 2026

0001193125-26-0769118-K

Feb 22, 2026

218.8 KB

10-K

Feb 17, 2026

0001628280-26-00866510-K

Dec 31, 2025

20.5 MB

13F-NT

Feb 13, 2026

0001193125-26-051539

Dec 31, 2025

8.0 KB

SCHEDULE 13G/A

Feb 13, 2026

0000905729-26-000041

—

34.1 KB

8-K

Feb 12, 2026

0001628280-26-0074648-K

Feb 12, 2026

745.1 KB

8-K

Feb 12, 2026

0001193125-26-0475908-K

Feb 10, 2026

194.3 KB

Dec 23, 2025

0001004434-25-000067PRIMARY DOCUMENT

Dec 23, 2025

5.3 KB

8-K

Dec 11, 2025

0001193125-25-3160538-K

Dec 8, 2025

556.6 KB

424B5

Dec 10, 2025

0001193125-25-314311424B5

—

645.2 KB

FWP

Dec 8, 2025

0001193125-25-311451FWP

—

20.6 KB

8-K

Dec 8, 2025

0001193125-25-3113808-K

Dec 8, 2025

198.1 KB

424B5

Dec 8, 2025

0001193125-25-310663424B5

—

498.8 KB

Nov 28, 2025

0001004434-25-000064PRIMARY DOCUMENT

Nov 25, 2025

4.5 KB

13F-NT

Nov 13, 2025

0001193125-25-280265

Sep 30, 2025

8.0 KB

Nov 12, 2025

0001004434-25-000057PRIMARY DOCUMENT

Nov 7, 2025

7.9 KB

SCHEDULE 13G/A

Nov 7, 2025

0000895421-25-000565

—

13.9 KB

10-Q

Nov 6, 2025

0001628280-25-05020610-Q

Sep 30, 2025

13.0 MB

Nov 5, 2025

0001004434-25-000053PRIMARY DOCUMENT

Nov 3, 2025

5.2 KB

8-K

Nov 3, 2025

0001628280-25-0479238-K

Nov 3, 2025

736.6 KB

SCHEDULE 13G/A

Oct 30, 2025

0001104659-25-104395

—

18.0 KB

SCHEDULE 13G/A

Oct 30, 2025

0000102909-25-000065

—

6.2 KB

Oct 3, 2025

0001004434-25-000050PRIMARY DOCUMENT

Sep 30, 2025

6.8 KB

Sep 9, 2025

0001127602-25-021240PRIMARY DOCUMENT

Sep 8, 2025

9.6 KB

25 filings shown

Filed	Form	Description
4/11/25	DEFA14A	DEFA14A	→
4/11/25	DEF 14A	DEF 14A	→
4/12/24	DEFA14A	DEFA14A	→
4/12/24	DEF 14A	DEF 14A	→
4/14/23	DEFA14A	DEFA14A	→
4/14/23	DEF 14A	DEF 14A	→
↓

AFFILIATED MANAGERS GROUP, INC.

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Filing History(1003 filings)

Proxies

Ownership

Other Filings

Filed	Form	Description
12/23/25	4	PRIMARY DOCUMENT	→
11/28/25	4	PRIMARY DOCUMENT	→
11/12/25	4	PRIMARY DOCUMENT	→
11/5/25	4	PRIMARY DOCUMENT	→
10/3/25	3	PRIMARY DOCUMENT	→
9/9/25	4	PRIMARY DOCUMENT	→
↓

Filed	Form	Description
3/6/26	144	144	→
3/5/26	SCHEDULE 13G/A	SCHEDULE 13G/A	→
2/13/26	13F-NT	13F-NT	→
2/13/26	SCHEDULE 13G/A	SCHEDULE 13G/A	→
11/13/25	13F-NT	13F-NT	→
11/7/25	SCHEDULE 13G/A	SCHEDULE 13G/A	→
↓