| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Piell Hilda Harris | Sr MD & Chief HR Officer | 20 S. WACKER DRIVE, CHICAGO | By: Margaret Austin Wright For: Hilda Harris Piell | 17 Sep 2025 | 0001409789 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CME | Common Stock Class A | Tax liability | $246,665 | -953 | -3.3% | $258.83 | 28,108 | 15 Sep 2025 | Direct | F1 |
| transaction | CME | Common Stock Class A | Award | $675,029 | +2,608 | +9.3% | $258.83 | 30,716 | 15 Sep 2025 | Direct | |
| transaction | CME | Common Stock Class A | Tax liability | $84,445 | -325 | -1.1% | $259.83 | 30,391 | 16 Sep 2025 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Ms. Piell surrendered shares to the Company in order to fulfill tax withholding obligations upon the vesting of restricted stock on September 15, 2025. |
| F2 | Ms. Piell surrendered shares to the Company in order to fulfill tax withholding obligations upon the vesting of restricted stock on September 16, 2025. |