🕵️ CME Group Inc. ($CME)
SEC insider & ownership activity, last 12 months · CIK 1156375 · every row links its SEC filing
Over the last 12 months insiders sold $30.3M against $661K of open-market buying. Terrence Duffy sold $21.3M (Dec–Sep). 1 planned sale is pending, the largest $106K (Jonathan Marcus). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $661K (8 lots) · 11 sellers, $30.3M (20 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Terrence Duffy | 0 | – | 6 | $21.3M | Sep 10, 2026 |
| Sammann Derek | 0 | – | 2 | $2.0M | Nov 20, 2025 |
| Hilda Piell 1998 TR | 0 | – | 1 | $1.8M | May 18, 2026 |
| Kendal Vroman | 0 | – | 1 | $1.6M | Mar 12, 2026 |
| Bryan T. Durkin | 0 | – | 1 | $1.3M | Feb 23, 2026 |
| Jonathan Marcus | 0 | – | 3 | $1.2M | Mar 17, 2026 |
| William R. Shepard | 8 | $661K | 0 | – | Jun 25, 2026 |
| Elizabeth A. Cook | 0 | – | 2 | $460K | Sep 14, 2026 |
| Ford Harold Eugene Jr. | 0 | – | 1 | $264K | Nov 3, 2025 |
| Suskind Dennis | 0 | – | 1 | $224K | Feb 6, 2026 |
| McCourt Timothy Francis | 0 | – | 1 | $98K | Sep 16, 2025 |
| Martin J. Gepsman | 0 | – | 1 | $92K | Feb 20, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.5% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Jonathan Marcus | $106K | Sep 16, 2026 | filing ↗ |
| Elizabeth ANNE COOK Trust | $140K | Sep 14, 2026 | filing ↗ |
| Terrence Duffy | $4.1M | Sep 10, 2026 | filing ↗ |
| Hilda Piell 1998 TR | $1.8M | May 18, 2026 | filing ↗ |
| Terrence Duffy | $10.4M | May 15, 2026 | filing ↗ |
| Jonathan Marcus | $1.0M | Mar 17, 2026 | filing ↗ |
| Kendal Vroman | $1.6M | Mar 12, 2026 | filing ↗ |
| Elizabeth ANNE COOK Trust U/A DTD 01/08/1999 | $320K | Mar 6, 2026 | filing ↗ |
| Bryan T Durkin Revocable Trust | $1.3M | Feb 23, 2026 | filing ↗ |
| Martin J. Gepsman | $91K | Feb 18, 2026 | filing ↗ |
| Dennis Suskind | $222K | Feb 6, 2026 | filing ↗ |
| Terrence Duffy | $6.7M | Dec 11, 2025 | filing ↗ |
| Sammann Derek | $2.0M | Nov 20, 2025 | filing ↗ |
| Harold E. Ford Jr. | $264K | Nov 3, 2025 | filing ↗ |
| Jonathan Marcus | $103K | Sep 18, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 9, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 11, 2026 | filing ↗ |
| Earnings (2.02) | Jul 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 22, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 16, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 16, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 9, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 14, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 22, 2026 | filing ↗ |
| Earnings (2.02) | Apr 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 22, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Oct 22, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 22, 2025 | filing ↗ |