Affiliated Managers Group, Inc. (MGRD) has 20 known insider and institutional holders on record. The largest holder is DALTON NATHANIEL with 206,589 shares. Other notable holders include Dyson Andrew and HEALEY SEAN M.
Over the last 12 months, insiders have made 46 transactions in MGRD stock — 24 buys (valued at RSU Award) and 3 sells (valued at $6.6M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
MGRD Insider Ownership
Top Holder
DALTON NATHANIEL
206,589 shares
Buys (12 mo)
24
$0.00 value
Sells (12 mo)
3
$6.6M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Dalton Nathaniel |
Director |
206,589 |
2020-03-05 |
|
| 2 |
Dyson Andrew |
EVP(amg Ltd.), Global Distrib. |
18,131 |
2016-03-03 |
|
| 3 |
Healey Sean M |
Executive Chairman |
10,839 |
2020-03-05 |
|
| 4 |
Wojcik Thomas M |
President and COO |
9,546 |
2026-03-09 |
|
| 5 |
Horgen Jay C. |
Chief Executive Officer |
8,544 |
2026-03-09 |
|
| 6 |
Jamal Rizwan M |
Head of Affiliate Investments |
6,432 |
2024-03-07 |
|
| 7 |
Cates G. Staley |
Director |
4,905 |
2026-04-06 |
|
| 8 |
Billings David M. |
General Counsel and Secretary |
4,781 |
2022-03-08 |
|
| 9 |
Erickson John R |
Head of Affiliate Engagement |
4,336 |
2023-03-07 |
|
| 10 |
Jeffery Reuben Iii |
Director |
3,879 |
2025-01-03 |
|
| 11 |
Kingston John Iii |
Vice Chairman & Gen. Counsel |
3,812 |
2014-01-06 |
|
| 12 |
Atkinson Tracy A |
Director |
3,609 |
2024-03-07 |
|
| 13 |
Churchill Dwight D. |
Director |
2,775 |
2025-08-18 |
|
| 14 |
Byrne Samuel T |
Director |
2,239 |
2020-07-30 |
|
| 15 |
Ryan Patrick T |
Director |
2,239 |
2020-07-30 |
|
| 16 |
Padiyar Kavita |
General Counsel & Corp. Sec. |
1,191 |
2026-03-09 |
|
| 17 |
Yerburgh Karen |
Director |
807 |
2021-01-05 |
|
| 18 |
Ferguson Niall |
Director |
488 |
2020-02-06 |
|
| 19 |
Palandjian Tracy P. |
Director |
335 |
2026-03-09 |
|
| 20 |
Matos Rodriguez Felix V. |
Director |
335 |
2026-03-09 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-01 |
Cates G. Staley |
Director |
Unknown |
- |
- |
- |
| 2026-03-09 |
Padiyar Kavita |
General Counsel & Corp. Sec. |
Informative Sell |
2,200 |
$278.24 |
$612.13K |
| 2026-03-05 |
Padiyar Kavita |
General Counsel & Corp. Sec. |
RSU Award |
1,191 |
- |
- |
| 2026-03-05 |
Franqui Annette |
Director |
RSU Award |
335 |
- |
- |
| 2026-03-05 |
Ritchea Dava |
Chief Financial Officer |
Tax Withholding of RSU |
292 |
$299.18 |
$87.36K |
| 2026-03-05 |
Matos Rodriguez Felix V. |
Director |
RSU Award |
335 |
- |
- |
| 2026-03-06 |
Wojcik Thomas M |
President and COO |
Informative Sell |
8,000 |
$286.30 |
$2.29M |
| 2026-03-05 |
Wojcik Thomas M |
President and COO |
Option Exercise (Sell) |
7,272 |
- |
- |
| 2026-03-05 |
Engel Marcy |
Director |
RSU Award |
335 |
- |
- |
| 2026-03-05 |
Alvingham Karen L. |
Director |
RSU Award |
98 |
- |
- |
| 2026-03-05 |
Ryan David Christopher |
Director |
RSU Award |
335 |
- |
- |
| 2026-03-05 |
Palandjian Tracy P. |
Director |
RSU Award |
335 |
- |
- |
| 2026-03-05 |
Horgen Jay C. |
Chief Executive Officer |
RSU Award |
8,544 |
- |
- |
| 2026-03-05 |
Starr Loren M |
Director |
RSU Award |
257 |
- |
- |
| 2025-12-23 |
Horgen Jay C. |
Chief Executive Officer |
Gift (Given) |
4,000 |
- |
- |
| 2025-11-25 |
Palandjian Tracy P. |
Director |
Gift (Given) |
3,499 |
- |
- |
| 2025-11-07 |
Alvingham Karen L. |
Director |
Option Exercise (Sell) |
560 |
$69.63 |
$38.99K |
| 2025-11-03 |
Engel Marcy |
Director |
RSU Award |
199 |
- |
- |
| 2025-09-30 |
Engel Marcy |
Director |
Unknown |
- |
- |
- |
| 2025-09-09 |
Wojcik Thomas M |
President and COO |
Informative Sell |
16,000 |
$231.03 |
$3.7M |
| 2025-09-08 |
Wojcik Thomas M |
President and COO |
Option Exercise (Sell) |
169,303 |
$74.49 |
$12.61M |
| 2025-09-02 |
Padiyar Kavita |
General Counsel & Corp. Sec. |
Option Exercise (Sell) |
47,731 |
$73.81 |
$3.52M |
| 2025-09-02 |
Horgen Jay C. |
Chief Executive Officer |
Option Exercise (Sell) |
75,000 |
$74.49 |
$5.59M |
| 2025-08-15 |
Franqui Annette |
Director |
Option Exercise |
664 |
- |
- |
| 2025-08-15 |
Matos Rodriguez Felix V. |
Director |
Option Exercise (Sell) |
1,102 |
- |
- |
