[Form 4] CME Group Inc. Insider Trading Activity

Rhea-AI Filing Summary

CME Group director Elizabeth A. Cook reported insider trading activity on June 25, 2025. The transaction involved the acquisition of 532 shares of Class A Common Stock at a price of $273.03 per share through a trust, granted pursuant to the CME Group Director Stock Plan.

Following the transaction, Cook's beneficial ownership includes:

• 18,771 shares held indirectly through a trust
• 20 shares held indirectly through a joint account

The Form 4 filing was signed by Jenelle Chalmers on behalf of Elizabeth A. Cook on June 26, 2025. This transaction represents a standard director compensation grant and demonstrates continued insider investment in the company.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cook Elizabeth A

(Last) (First) (Middle)

20 S. WACKER DRIVE

(Street)

CHICAGO IL 60606

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CME GROUP INC. [ CME ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock Class A	06/25/2025		A(1)		532	A	$273.03	18,771	I	by Trust
Common Stock Class A								20	I	By Joint Account

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Granted pursuant to the CME Group Director Stock Plan, as amended and restated.

Remarks:

	By: Jenelle Chalmers For: Elizabeth A. Cook	06/26/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many CME Group shares did Director Elizabeth Cook acquire on June 25, 2025?

According to the Form 4 filing, Director Elizabeth Cook acquired 532 shares of CME Group Class A Common Stock on June 25, 2025, at a price of $273.03 per share through a Trust.

What is Elizabeth Cook's total CME Group stock ownership after the June 2025 transaction?

Following the reported transaction, Elizabeth Cook beneficially owns a total of 18,791 shares of CME Group Class A Common Stock, consisting of 18,771 shares held in Trust and 20 shares held in a Joint Account.

How did Elizabeth Cook acquire the new CME shares in June 2025?

The shares were granted to Elizabeth Cook pursuant to the CME Group Director Stock Plan, as amended and restated, as indicated in the footnotes of the Form 4 filing.

Who signed the Form 4 filing for CME Group Director Elizabeth Cook?

The Form 4 was signed by Jenelle Chalmers on behalf of Elizabeth A. Cook on June 26, 2025.