Stocks
AMG AFFILIATED MANAGERS GROUP, INC.

AMG

AFFILIATED MANAGERS GROUP, INC.

Company with tickers: AMG, MGR, MGRB, MGRD, MGRE

CIK

1004434

Shares Outstanding

26,684,730

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-04-01	Cates G. Staley	Director	Other	4,905	—	—	4,905
2026-03-09	Padiyar Kavita	General Counsel & Corp. Sec.	Sell	2,200	$278.24	$612,128	42,672
2026-03-06	Wojcik Thomas M	President and COO	Sell	8,000	$286.30	$2,290,400	159,465
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Award	27,260	—	—	355,210
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Award	8,544	—	—	8,544
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Tax	18,333	$299.18	$5,484,867	336,877
2026-03-05	Padiyar Kavita	General Counsel & Corp. Sec.	Award	2,426	—	—	47,154
2026-03-05	Wojcik Thomas M	President and COO	Award	10,619	—	—	176,601
2026-03-05	Wojcik Thomas M	President and COO	Convert	7,272	—	—	165,982
2026-03-05	Wojcik Thomas M	President and COO	Convert	7,272	—	—	9,546
2026-03-05	Wojcik Thomas M	President and COO	Tax	9,136	$299.18	$2,733,308	167,465
2026-03-05	RITCHEA DAVA	Chief Financial Officer	Convert	601	—	—	1,804
2026-03-05	RITCHEA DAVA	Chief Financial Officer	Convert	601	—	—	601
2026-03-05	RITCHEA DAVA	Chief Financial Officer	Tax	292	$299.18	$87,361	309
2026-03-05	RITCHEA DAVA	Chief Financial Officer	Award	1,667	—	—	1,667
2026-03-05	STARR LOREN M	Director	Convert	652	—	—	2,362
2026-03-05	STARR LOREN M	Director	Convert	652	—	—	1,937
2026-03-05	STARR LOREN M	Director	Award	503	—	—	503
2026-03-05	STARR LOREN M	Director	Award	257	—	—	257
2026-03-05	Matos Rodriguez Felix V.	Director	Convert	867	—	—	5,369
2026-03-05	Matos Rodriguez Felix V.	Director	Award	335	—	—	335
2026-03-05	Matos Rodriguez Felix V.	Director	Convert	867	—	—	1,172
2026-03-05	Padiyar Kavita	General Counsel & Corp. Sec.	Award	1,191	—	—	1,191
2026-03-05	Padiyar Kavita	General Counsel & Corp. Sec.	Tax	2,282	$299.18	$682,729	44,872
2026-03-05	Padiyar Kavita	General Counsel & Corp. Sec.	Convert	2,288	—	—	2,670
2026-03-05	Padiyar Kavita	General Counsel & Corp. Sec.	Convert	2,288	—	—	44,728
2026-03-05	Ryan David Christopher	Director	Convert	867	—	—	3,850
2026-03-05	Ryan David Christopher	Director	Convert	867	—	—	4,494
2026-03-05	Ryan David Christopher	Director	Award	335	—	—	335
2026-03-05	Palandjian Tracy P.	Director	Convert	867	—	—	1,970
2026-03-05	Palandjian Tracy P.	Director	Award	335	—	—	335
2026-03-05	Palandjian Tracy P.	Director	Convert	867	—	—	15,254
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Convert	17,563	—	—	327,950
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Other	34,058	—	—	34,058
2026-03-05	Horgen Jay C.	Director, Chief Executive Officer	Convert	17,563	—	—	22,891
2026-03-05	Alvingham Karen L.	Director	Tax	67	$299.18	$20,045	13,043
2026-03-05	Alvingham Karen L.	Director	Award	98	—	—	98
2026-03-05	Alvingham Karen L.	Director	Award	171	—	—	171
2026-03-05	Alvingham Karen L.	Director	Convert	867	—	—	3,709
2026-03-05	Alvingham Karen L.	Director	Convert	867	—	—	13,110
2026-03-05	Engel Marcy	Director	Award	335	—	—	335
2026-03-05	FRANQUI ANNETTE	Director	Award	335	—	—	335
2026-03-05	FRANQUI ANNETTE	Director	Convert	548	—	—	477
2026-03-05	FRANQUI ANNETTE	Director	Convert	548	—	—	1,212
2025-12-23	Horgen Jay C.	Director, Chief Executive Officer	Other	34,058	—	—	34,058
2025-12-23	Horgen Jay C.	Director, Chief Executive Officer	Gift	4,000	—	—	510,387
2025-11-25	Palandjian Tracy P.	Director	Gift	3,499	—	—	14,387
2025-11-07	Alvingham Karen L.	Director	Convert	560	$69.63	$38,993	12,425
2025-11-07	Alvingham Karen L.	Director	Tax	182	$259.26	$47,185	12,243
2025-11-07	Alvingham Karen L.	Director	Convert	560	—	—	0
2025-11-03	Engel Marcy	Director	Award	199	—	—	199
2025-09-30	Engel Marcy	Director	Other	0	—	—	0
2025-09-09	Wojcik Thomas M	President and COO	Sell	16,000	$231.03	$3,696,480	158,710
2025-09-08	Wojcik Thomas M	President and COO	Convert	169,303	—	—	1,342
2025-09-08	Wojcik Thomas M	President and COO	Tax	114,008	$231.19	$26,357,510	174,710
2025-09-08	Wojcik Thomas M	President and COO	Convert	169,303	$74.49	$12,611,380	288,718
2025-09-02	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	—	—	75,000
2025-09-02	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	$74.49	$5,586,750	559,322
2025-09-02	Horgen Jay C.	Director, Chief Executive Officer	Tax	44,935	$229.97	$10,333,702	514,387
2025-09-02	Horgen Jay C.	Director, Chief Executive Officer	Other	34,058	—	—	34,058
2025-09-02	Padiyar Kavita	General Counsel & Corp. Sec.	Tax	30,991	$229.97	$7,127,000	42,440
2025-09-02	Padiyar Kavita	General Counsel & Corp. Sec.	Convert	47,731	—	—	1,354
2025-09-02	Padiyar Kavita	General Counsel & Corp. Sec.	Convert	47,731	$73.81	$3,523,025	73,431
2025-08-15	Ryan David Christopher	Director	Convert	1,092	—	—	3,627
2025-08-15	Ryan David Christopher	Director	Convert	1,092	—	—	4,409
2025-08-15	STARR LOREN M	Director	Convert	544	—	—	1,285
2025-08-15	STARR LOREN M	Director	Convert	544	—	—	2,680
2025-08-15	Alvingham Karen L.	Director	Convert	1,092	—	—	4,313
2025-08-15	Alvingham Karen L.	Director	Tax	84	$218.70	$18,371	11,865
2025-08-15	Alvingham Karen L.	Director	Convert	1,092	—	—	11,949
2025-08-15	FRANQUI ANNETTE	Director	Convert	664	—	—	664
2025-08-15	FRANQUI ANNETTE	Director	Convert	664	—	—	1,025
2025-08-15	Matos Rodriguez Felix V.	Director	Convert	1,102	—	—	2,039
2025-08-15	Matos Rodriguez Felix V.	Director	Convert	1,102	—	—	4,502
2025-08-15	Palandjian Tracy P.	Director	Convert	1,117	—	—	2,837
2025-08-15	Palandjian Tracy P.	Director	Convert	1,117	—	—	17,886
2025-08-15	Churchill Dwight D.	Director	Convert	1,398	—	—	2,775
2025-08-15	Churchill Dwight D.	Director	Convert	1,398	—	—	29,030
2025-08-14	Ryan David Christopher	Director	Award	307	—	—	307
2025-08-14	STARR LOREN M	Director	Award	334	—	—	334
2025-08-14	Alvingham Karen L.	Director	Award	262	—	—	262
2025-08-12	Horgen Jay C.	Director, Chief Executive Officer	Other	34,058	—	—	34,058
2025-08-12	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	—	—	150,000
2025-08-12	Horgen Jay C.	Director, Chief Executive Officer	Tax	45,607	$219.70	$10,019,858	484,322
2025-08-12	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	$74.49	$5,586,750	529,929
2025-07-31	STARR LOREN M	Director	Award	716	—	—	716
2025-07-31	Palandjian Tracy P.	Director	Award	477	—	—	477
2025-07-31	Ryan David Christopher	Director	Award	477	—	—	477
2025-07-31	FRANQUI ANNETTE	Director	Award	477	—	—	477
2025-07-31	Matos Rodriguez Felix V.	Director	Award	477	—	—	477
2025-07-31	Churchill Dwight D.	Director	Award	477	—	—	477
2025-07-31	Alvingham Karen L.	Director	Award	477	—	—	477
2025-07-02	Horgen Jay C.	Director, Chief Executive Officer	Gift	14,000	—	—	454,929
2025-07-01	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	—	—	225,000
2025-07-01	Horgen Jay C.	Director, Chief Executive Officer	Convert	75,000	$74.49	$5,586,750	516,120
2025-07-01	Horgen Jay C.	Director, Chief Executive Officer	Tax	47,191	$198.72	$9,377,796	468,929
2025-05-12	Churchill Dwight D.	Director	Convert	1,353	—	—	0
2025-05-12	Churchill Dwight D.	Director	Convert	1,353	$160.01	$216,494	28,810
2025-05-12	Churchill Dwight D.	Director	Tax	1,178	$183.83	$216,552	27,632
2025-05-12	Palandjian Tracy P.	Director	Convert	1,353	$160.01	$216,494	16,512