Affiliated Managers Group, Inc. (MGRB) Insider Ownership

Historic Insider Ownership Trends

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Loren M Starr - 1,937 0 09 Mar, 2026
Tracy A Atkinson - 4,020 0 07 Mar, 2024
Jay C. Horgen Chief Executive Officer 336,877 0 09 Mar, 2026
Dwight D. Churchill - 29,030 0 18 Aug, 2025
Reuben Iii Jeffery - 34,274 0 03 Jan, 2025
Tracy P. Palandjian - 15,254 0 09 Mar, 2026
David M. Billings General Counsel And Secretary 18,965 0 16 Nov, 2022
David Christopher Ryan - 4,494 0 09 Mar, 2026
Karen L. Alvingham - 13,043 0 09 Mar, 2026
Thomas M Wojcik President And Coo 159,465 0 09 Mar, 2026
Rodriguez Felix V. Matos - 5,369 0 09 Mar, 2026
Dava Ritchea Chief Financial Officer 309 0 09 Mar, 2026
Annette Franqui - 1,212 0 09 Mar, 2026
Rizwan M Jamal Head Of Affiliate Investments 0 199,233 18 Oct, 2024
John R Erickson Head Of Affiliate Engagement 58,054 0 17 Aug, 2023
Kavita Padiyar General Counsel Corp. Sec. 42,672 0 09 Mar, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
05 Mar, 2026 Kavita Padiyar Common Stock A 2,288 $0.00 44,728 D M
05 Mar, 2026 Jay C. Horgen Common Stock A 17,563 $0.00 327,950 D M
05 Mar, 2026 Annette Franqui Common Stock A 548 $0.00 1,212 D M
05 Mar, 2026 Rodriguez Felix V. Matos Common Stock A 867 $0.00 5,369 D M
05 Mar, 2026 David Christopher Ryan Common Stock A 867 $0.00 4,494 D M
05 Mar, 2026 Thomas M Wojcik Common Stock A 7,272 $0.00 165,982 D M
05 Mar, 2026 Rodriguez Felix V. Matos Common Stock A 867 $0.00 5,369 D M
05 Mar, 2026 Marcy Engel Stock Units A 335 $0.00 335 D A
05 Mar, 2026 Jay C. Horgen Common Stock A 17,563 $0.00 327,950 D M
05 Mar, 2026 Loren M Starr Common Stock A 652 $0.00 1,937 D M
05 Mar, 2026 Kavita Padiyar Common Stock A 2,288 $0.00 44,728 D M
05 Mar, 2026 Dava Ritchea Common Stock A 601 $0.00 601 D M
05 Mar, 2026 Tracy P. Palandjian Common Stock A 867 $0.00 15,254 D M
05 Mar, 2026 Karen L. Alvingham Common Stock A 867 $0.00 13,110 D M
05 Mar, 2026 Karen L. Alvingham Common Stock A 867 $0.00 13,110 D M
05 Mar, 2026 Tracy P. Palandjian Common Stock A 867 $0.00 15,254 D M
05 Mar, 2026 Loren M Starr Common Stock A 652 $0.00 1,937 D M
05 Mar, 2026 Thomas M Wojcik Common Stock A 7,272 $0.00 165,982 D M
05 Mar, 2026 David Christopher Ryan Common Stock A 867 $0.00 4,494 D M
05 Mar, 2026 Loren M Starr Stock Units D 652 $0.00 2,362 D M