Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 11/02/2026 | Verkauf | 305.15 | 10,079 | 3,075,607 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 10/27/2026 | Verkauf | 298.70 | 5,000 | 1,493,500 | Form 4 |
| CME | Gepsman Martin J | Director | 10/22/2026 | Verkauf | 302.50 | 400 | 121,000 | Form 4 |
| CME | Cook Elizabeth A | Director | 09/14/2026 | Verkauf | 280.11 | 500 | 140,055 | Form 4 |
| CME | Duffy Terrence A | Chairman and CEO | 09/10/2026 | Verkauf | 275.03 | 628 | 172,719 | Form 4 |
| CME | Duffy Terrence A | Chairman and CEO | 09/10/2026 | Verkauf | 274.41 | 14,372 | 3,943,821 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).