Terrence A. Duffy - 11 Dec 2025 Form 4 Insider Report for CME GROUP INC. (CME)

Role: Chairman and CEO, Director
Signature: By: Margaret Austin Wright For: Terrence A. Duffy
Issuer symbol: CME
Transactions as of: 11 Dec 2025
Net transactions value: -$6,738,815
Form type: 4
Filing time: 15 Dec 2025, 15:05:24 UTC
Previous filing: 17 Sep 2025
Next filing: 02 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
DUFFY TERRENCE A	Chairman and CEO, Director	20 S. WACKER DRIVE, CHICAGO	By: Margaret Austin Wright For: Terrence A. Duffy	15 Dec 2025	0001212809

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CME	Common Stock Class A	Sale	$3,522,250	-13,089	-14%	$269.10	77,715	11 Dec 2025	Direct	F1
transaction	CME	Common Stock Class A	Sale	$3,216,566	-11,911	-15%	$270.05	65,804	11 Dec 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On December 11, 2025, Mr. Duffy sold an aggregate of 25,000 shares of CME Group Class A common stock. For reporting purposes, the sale prices within $1 range have been aggregated and the weighted average has been reported. The price range was $268.66 to $269.66 for 13,809 shares and $269.68 to $270.51 for 11,911 shares. The Company maintains a record of the transaction and copies will be provided upon request.

Content

On December 11, 2025, Mr. Duffy sold an aggregate of 25,000 shares of CME Group Class A common stock. For reporting purposes, the sale prices within $1 range have been aggregated and the weighted average has been reported. The price range was $268.66 to $269.66 for 13,809 shares and $269.68 to $270.51 for 11,911 shares. The Company maintains a record of the transaction and copies will be provided upon request.