🕵️ Affiliated Managers Group, Inc. ($MGRE)
SEC insider & ownership activity, last 12 months · CIK 1004434 · every row links its SEC filing
Over the last 12 months insiders sold $13.9M against $687K of open-market buying. Thomas M. Wojcik sold $6.0M in discretionary trades (Sep–Mar). 1 planned sale is pending, the largest $105K (David Ryan). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $687K (2 lots) · 5 sellers, $13.9M (6 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Thomas M. Wojcik | 0 | – | 2 | $6.0M | Mar 6, 2026 |
| Jay Horgen | 0 | – | 1 | $5.9M | Jun 8, 2026 |
| David Ryan | 0 | – | 1 | $1.0M | May 6, 2026 |
| Kavita Padiyar | 0 | – | 1 | $612K | Mar 9, 2026 |
| Cates G. Staley | 1 | $459K | 0 | – | May 6, 2026 |
| Felix V Matos Rodriguez | 0 | – | 1 | $300K | May 8, 2026 |
| Franqui Annette | 1 | $229K | 0 | – | Jun 1, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Morgan Stanley | 7.0% | 13G | Nov 7, 2025 | filing ↗ | |
| Atlanta Capital Management Company, LLC | 6.3% | 13G | Nov 7, 2025 | filing ↗ | |
| Vanguard Capital Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.1% | 13G | Apr 28, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| David Ryan | $105K | Jun 30, 2026 | filing ↗ |
| Jay Horgen | $5.9M | Jun 8, 2026 | filing ↗ |
| Felix V Matos Rodriguez | $300K | May 8, 2026 | filing ↗ |
| David Ryan | $1.0M | May 6, 2026 | filing ↗ |
| Thomas M. Wojcik | $13.1M | Mar 9, 2026 | filing ↗ |
| Kavita Padiyar | $612K | Mar 9, 2026 | filing ↗ |
| Thomas Wojcik | $2.3M | Mar 6, 2026 | filing ↗ |
| Thomas Wojcik | $3.7M | Sep 9, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jun 9, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 9, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 27, 2026 | filing ↗ |
| Earnings (2.02) | May 1, 2026 | filing ↗ |
| Other events (8.01) | May 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 1, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 22, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 22, 2026 | filing ↗ |
| Earnings (2.02) | Feb 12, 2026 | filing ↗ |
| Other events (8.01) | Feb 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 12, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 10, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 8, 2025 | filing ↗ |
| New financial obligation (2.03) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Other events (8.01) | Dec 8, 2025 | filing ↗ |
| Earnings (2.02) | Nov 3, 2025 | filing ↗ |
| Other events (8.01) | Nov 3, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 3, 2025 | filing ↗ |
| Officer/director changes (5.02) | Aug 11, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 11, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 11, 2025 | filing ↗ |
| Earnings (2.02) | Jul 31, 2025 | filing ↗ |
| Other events (8.01) | Jul 31, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 31, 2025 | filing ↗ |