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 | Shepard William R | Director | 09/25/2026 | Kauf | 268.76 | 293 | 78,747 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/16/2026 | Steuer-Abgabe | 272.46 | 44 | 11,988 | Form 4 |
| CME | McCourt Timothy Francis | Sr MD Global Head Equity & FX | 09/16/2026 | Steuer-Abgabe | 272.46 | 364 | 99,175 | Form 4 |
| CME | Fitzpatrick Lynne | President and CFO | 09/16/2026 | Steuer-Abgabe | 272.46 | 359 | 97,813 | Form 4 |
| CME | Sprague Suzanne | COO & Global Head of Clearing | 09/16/2026 | Steuer-Abgabe | 272.46 | 308 | 83,918 | Form 4 |
| CME | Dennis Michael G. | Global Head of Fixed Income | 09/16/2026 | Steuer-Abgabe | 272.46 | 274 | 74,654 | Form 4 |
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 09/16/2026 | Steuer-Abgabe | 272.46 | 359 | 97,813 | Form 4 |
| CME | Tobin Jack J | MD Chief Accounting Officer | 09/16/2026 | Steuer-Abgabe | 272.46 | 51 | 13,895 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 09/16/2026 | Steuer-Abgabe | 272.46 | 359 | 97,813 | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 09/16/2026 | Steuer-Abgabe | 272.46 | 359 | 97,813 | Form 4 |
| CME | Vroman Ken | Chief Transformation Officer | 09/16/2026 | Steuer-Abgabe | 272.46 | 308 | 83,918 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/15/2026 | Steuer-Abgabe | 275.09 | 50 | 13,755 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/15/2026 | Steuer-Abgabe | 275.09 | 57 | 15,680 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/15/2026 | Steuer-Abgabe | 275.09 | 47 | 12,929 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/15/2026 | Steuer-Abgabe | 275.09 | 43 | 11,829 | Form 4 |
| CME | Marchese John Clifford | Sr MD, General Counsel | 09/15/2026 | Zuteilung | 275.09 | 784 | 215,671 | Form 4 |
| CME | McCourt Timothy Francis | Sr MD Global Head Equity & FX | 09/15/2026 | Steuer-Abgabe | 275.09 | 338 | 92,980 | Form 4 |
| CME | McCourt Timothy Francis | Sr MD Global Head Equity & FX | 09/15/2026 | Steuer-Abgabe | 275.09 | 330 | 90,780 | Form 4 |
| CME | McCourt Timothy Francis | Sr MD Global Head Equity & FX | 09/15/2026 | Steuer-Abgabe | 275.09 | 302 | 83,077 | Form 4 |
| CME | McCourt Timothy Francis | Sr MD Global Head Equity & FX | 09/15/2026 | Zuteilung | 275.09 | 2,592 | 713,033 | Form 4 |
| CME | Fitzpatrick Lynne | President and CFO | 09/15/2026 | Steuer-Abgabe | 275.09 | 457 | 125,716 | Form 4 |
| CME | Fitzpatrick Lynne | President and CFO | 09/15/2026 | Steuer-Abgabe | 275.09 | 275 | 75,650 | Form 4 |
| CME | Fitzpatrick Lynne | President and CFO | 09/15/2026 | Steuer-Abgabe | 275.09 | 249 | 68,497 | Form 4 |
| CME | Fitzpatrick Lynne | President and CFO | 09/15/2026 | Zuteilung | 275.09 | 4,088 | 1,124,568 | Form 4 |
| CME | Sprague Suzanne | COO & Global Head of Clearing | 09/15/2026 | Steuer-Abgabe | 275.09 | 320 | 88,029 | Form 4 |
| CME | Sprague Suzanne | COO & Global Head of Clearing | 09/15/2026 | Steuer-Abgabe | 275.09 | 275 | 75,650 | Form 4 |
| CME | Sprague Suzanne | COO & Global Head of Clearing | 09/15/2026 | Steuer-Abgabe | 275.09 | 249 | 68,497 | Form 4 |
| CME | Sprague Suzanne | COO & Global Head of Clearing | 09/15/2026 | Zuteilung | 275.09 | 2,864 | 787,858 | Form 4 |
| CME | Dennis Michael G. | Global Head of Fixed Income | 09/15/2026 | Steuer-Abgabe | 275.09 | 274 | 75,375 | Form 4 |
| CME | Dennis Michael G. | Global Head of Fixed Income | 09/15/2026 | Zuteilung | 275.09 | 2,592 | 713,033 | Form 4 |
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 320 | 88,029 | Form 4 |
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 361 | 99,307 | Form 4 |
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 373 | 102,609 | Form 4 |
| CME | Winkler Julie | Sr MD Chief Commercial Officer | 09/15/2026 | Zuteilung | 275.09 | 2,864 | 787,858 | Form 4 |
| CME | Tobin Jack J | MD Chief Accounting Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 205 | 56,393 | Form 4 |
| CME | Tobin Jack J | MD Chief Accounting Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 47 | 12,929 | Form 4 |
| CME | Tobin Jack J | MD Chief Accounting Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 44 | 12,104 | Form 4 |
| CME | Tobin Jack J | MD Chief Accounting Officer | 09/15/2026 | Zuteilung | 275.09 | 700 | 192,563 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 320 | 88,029 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 361 | 99,307 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 373 | 102,609 | Form 4 |
| CME | Cutinho Sunil | Chief Information Officer | 09/15/2026 | Zuteilung | 275.09 | 2,864 | 787,858 | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 09/15/2026 | Steuer-Abgabe | 275.09 | 320 | 88,029 | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 09/15/2026 | Steuer-Abgabe | 275.09 | 361 | 99,307 | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 09/15/2026 | Steuer-Abgabe | 275.09 | 373 | 102,609 | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 09/15/2026 | Zuteilung | 275.09 | 2,864 | 787,858 | Form 4 |
| CME | Vroman Ken | Chief Transformation Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 274 | 75,375 | Form 4 |
| CME | Vroman Ken | Chief Transformation Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 309 | 85,003 | Form 4 |
| CME | Vroman Ken | Chief Transformation Officer | 09/15/2026 | Steuer-Abgabe | 275.09 | 320 | 88,029 | Form 4 |
| CME | Vroman Ken | Chief Transformation Officer | 09/15/2026 | Zuteilung | 275.09 | 2,592 | 713,033 | Form 4 |
| CME | Duffy Terrence A | Chairman and CEO | 09/15/2026 | Zuteilung | 275.09 | 21,812 | 6,000,263 | 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 |
| CME | Shepard William R | Director | 08/18/2026 | J | — | 2,554 | — | Form 4 |
| CME | Sammann Derek | Sr MD Gl Hd Commodities Mkts | 05/25/2026 | J | — | 4,629 | — | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).