| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| SHEPARD WILLIAM R | Director | 20 S WACKER DRIVE, CHICAGO | By: Margaret Austin Wright For: William R. Shepard | 26 Sep 2025 | 0001212852 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CME | Common Stock Class A | Purchase | $69.6K | +262 | +0.1% | $265.19 | 258K | 25 Sep 2025 | by Trust | F1 |
| transaction | CME | Common Stock Class A | Purchase | $3.07K | +11.6 | +0.47% | $265.22 | 2.47K | 25 Sep 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Reflects shares that were acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker. Actual amounts of fractional shares owned may vary slightly due to rounding. |