Affiliated Managers AMG Insider Ownership

NYSE AMG

$380.88 +9.45 (+2.54%)

As of: Oct 5, 2026 · 3:59 PM EDT

Insider Holdings by Owner

799.95K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

2.85%

▲+0.011% pp QoQ

Shares Held by Insiders

752.97K

filed for Sep 2026

▲+0.39% QoQ

Shares Outstanding

26.40Mn

26,400,000 shares

Direct Holdings

519.68K

Indirect: 233.29K

Net Shares Traded (QoQ)

+2.89K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 5, 2026

Over the past year, AMG insiders bought $687,405 of stock (2.25K shares) and sold $10.16 million (32.1K shares) on the open market.

A count shows 2 insiders buying AMG stock on the open market over the past 12 months and 5 insiders selling.
Among Affiliated Managers' insiders, the largest open-market purchases in the past 12 months were by G. Staley Cates (Director), totaling $458,745 (1.5K shares), most recently on May 6, 2026.
On the selling side, Jay C. Horgen (President and CEO) sold the most Affiliated Managers stock on the open market over the past 12 months, $5.92 million (17.5K shares), most recently on June 8, 2026.
In transactions other than open-market trades, Affiliated Managers insiders received 40.3K shares in stock awards, acquired 111K shares through option exercises and conversions, gave up 70.65K shares to cover taxes or exercise prices and gave away 7.5K shares as gifts over the past 12 months.
Business Quant data puts insider holdings in AMG at 752.97K shares across insiders' latest Form 4 filings, or 2.85% of the 26.4Mn shares outstanding; that total is up 0.39% from 750.08K shares at the end of Q2 2026.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 30.98% (233.29K shares) of Affiliated Managers' insider total, with the other 69.02% (519.68K shares) held directly.
Per Business Quant, 14 insiders of AMG hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
Affiliated Managers' three largest insider shareholders, based on their latest Form 4 filings, are Jay C. Horgen (President and CEO, 238.76K shares), Rizwan M. Jamal (Head of Affiliate Investments, 199.23K shares) and Thomas M. Wojcik (President and COO, 159.47K shares).
The holding of Jay C. Horgen makes up 31.71% of all shares held by Affiliated Managers insiders.
Over the past 12 months, 12 insiders reported transactions in Affiliated Managers stock in 33 Form 4 filings.
Insider figures for AMG include Form 4 filings through September 25, 2026.

Form 4 Holdings

Insiders Holding AMG

Insiders 17

Shares held 799.95K

Of outstanding 3.03%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Jay C. Horgen	President And Ceo	204,706	0	204,706	25.6%	08 Jun, 2026
2	Rizwan M Jamal	Head Of Affiliate Investments	0	199,233	199,233	24.9%	18 Oct, 2024
3	Thomas M Wojcik	President And Coo	159,465	0	159,465	19.9%	09 Mar, 2026
4	John R Erickson	Head Of Affiliate Engagement	58,054	0	58,054	7.3%	17 Aug, 2023
5	Kavita Padiyar	General Counsel Corp. Sec.	42,672	0	42,672	5.3%	09 Mar, 2026
6	Reuben Iii Jeffery	Director	34,274	0	34,274	4.3%	03 Jan, 2025
7	Dwight D. Churchill	Director	29,030	0	29,030	3.6%	18 Aug, 2025
8	David M. Billings	General Counsel And Secretary	18,965	0	18,965	2.4%	16 Nov, 2022
9	Tracy P. Palandjian	Director	18,375	0	18,375	2.3%	18 Aug, 2026
10	Karen L. Alvingham	Director	13,043	0	13,043	1.6%	09 Mar, 2026
11	G. Staley Cates	Director	6,405	0	6,405	0.8%	06 May, 2026
12	Rodriguez Felix V. Matos	Director	5,217	0	5,217	0.7%	25 Sep, 2026
13	Tracy A Atkinson	Director	4,020	0	4,020	0.5%	07 Mar, 2024
14	Loren M Starr	Director	2,653	0	2,653	0.3%	18 Aug, 2026
15	Annette Franqui	Director	2,439	0	2,439	0.3%	18 Aug, 2026
16	David Christopher Ryan	Director	1,092	0	1,092	0.1%	08 May, 2026
17	Dava Ritchea	Chief Financial Officer	309	0	309	0.0%	09 Mar, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,935 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
15 Aug, 2026	Rodriguez Felix V. Matos	Director	Acquired M	848	$0.00	$0	5,217	Direct
15 Aug, 2026	Rodriguez Felix V. Matos	Director	Disposed M	848	$0.00	$0	933	Direct
15 Aug, 2026	Rodriguez Felix V. Matos	Director	Acquired M	654	$0.00	$0	5,023	Direct
15 Aug, 2026	Annette Franqui	Director	Acquired M	477	$0.00	$0	2,439	Direct
15 Aug, 2026	Tracy P. Palandjian	Director	Acquired M	848	$0.00	$0	18,375	Direct
15 Aug, 2026	Loren M Starr	Director	Acquired M	716	$0.00	$0	2,653	Direct
15 Aug, 2026	Annette Franqui	Director	Disposed M	477	$0.00	$0	609	Direct
15 Aug, 2026	Rodriguez Felix V. Matos	Director	Disposed M	654	$0.00	$0	1,127	Direct
15 Aug, 2026	Loren M Starr	Director	Disposed M	716	$0.00	$0	3,027	Direct
15 Aug, 2026	Tracy P. Palandjian	Director	Disposed M	848	$0.00	$0	1,731	Direct
30 Jul, 2026	Marcy Engel	Director	Acquired A	274	$0.00	$0	274	Direct
30 Jul, 2026	Tracy P. Palandjian	Director	Acquired A	274	$0.00	$0	274	Direct
30 Jul, 2026	Rodriguez Felix V. Matos	Director	Acquired A	274	$0.00	$0	274	Direct
30 Jul, 2026	Annette Franqui	Director	Acquired A	274	$0.00	$0	274	Direct
30 Jul, 2026	G. Staley Cates	Director	Acquired A	274	$0.00	$0	274	Direct
30 Jul, 2026	Loren M Starr	Director	Acquired A	411	$0.00	$0	411	Direct
30 Jul, 2026	Loren M Starr	Director	Acquired A	210	$0.00	$0	210	Direct
12 Jun, 2026	Tracy P. Palandjian	Director	Acquired M	2,958	$82.07	$242.76K	18,212	Direct
12 Jun, 2026	Tracy P. Palandjian	Director	Disposed F	685	$354.62	$242.91K	17,527	Direct
12 Jun, 2026	Tracy P. Palandjian	Director	Disposed M	2,958	$0.00	$0	0	Direct

Showing 1 to 20 of 1,935 transactions