[Form 4] CME GROUP INC. Insider Trading Activity

Rhea-AI Filing Summary

Kendal L. Vroman, Chief Transformation Officer of CME Group Inc. (CME), reported insider transactions on a Form 4 showing restricted stock vesting and related tax withholding. On 09/15/2025 he surrendered 971 Class A shares to the company at a reported price of $258.83 to satisfy tax withholding and, on the same day, was recorded as acquiring 2,608 Class A shares at $258.83, bringing his beneficial ownership to 20,395 shares. On 09/16/2025 he surrendered an additional 325 Class A shares at $259.83, leaving 20,070 shares reported as beneficially owned. The form states the surrenders were to fulfill tax withholding obligations upon vesting of restricted stock.

Positive

• Acquisition of 2,608 Class A shares recorded on 09/15/2025, increasing beneficial ownership to 20,395 shares
• Transactions were related to restricted stock vesting, indicating executive equity compensation and continued ownership alignment

Negative

• 1,296 shares surrendered (971 on 09/15/2025 and 325 on 09/16/2025) to satisfy tax withholding, reducing transferable holdings
• Transactions involve insider share surrender rather than open-market purchases, so they do not represent fresh capital deployment by the insider

Insights

Corporate Governance Expert

TL;DR: Routine insider tax-withholding and vesting activity; no material change to control or governance.

The Form 4 discloses standard mechanics: restricted stock vested and shares were surrendered to the issuer to cover tax withholding, while additional shares were recorded as acquired the same day. This pattern is common for equity compensation and does not indicate a change in executive role or a deliberate open-market sale. The net beneficial position increased marginally from 17,787 to 20,070 shares during the reported transactions, showing continued ownership alignment with the company.

Securities Analyst

TL;DR: Transaction sizes are modest and appear administrative; unlikely to be material to investors.

The reported transactions consist of surrenders totaling 1,296 shares across two dates to satisfy tax withholding and an acquisition of 2,608 shares tied to vesting. Reported prices are in the $258.83–$259.83 range. These are internal settlement actions related to equity compensation rather than open-market trades; they do not signal changes in trading strategy or major liquidity events.

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
Estimated average burden
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).

1. Name and Address of Reporting Person^*

Vroman Ken

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2025

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	09/15/2025		F		971(1)	D	$258.83	17,787	D
Common Stock Class A	09/15/2025		A		2,608	A	$258.83	20,395	D
Common Stock Class A	09/16/2025		F		325(2)	D	$259.83	20,070	D

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. Mr. Vroman surrendered shares to the Company in order to fulfill tax withholding obligations upon the vesting of restricted stock on September 15, 2025.

2. Mr. Vroman surrendered shares to the Company in order to fulfill tax withholding obligations upon the vesting of restricted stock on September 16, 2025.

Remarks:

	By: Margaret Austin Wright For: Kendal L. Vroman	09/17/2025
	** 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

What insider transactions did CME (CME) report for Kendal L. Vroman?

The Form 4 shows surrenders of 971 shares on 09/15/2025 and 325 shares on 09/16/2025 to cover tax withholding, and an acquisition of 2,608 shares on 09/15/2025.

Why were shares surrendered by the reporting person on the Form 4?

The filing states the shares were surrendered to the company to fulfill tax withholding obligations upon the vesting of restricted stock on 09/15/2025 and 09/16/2025.

How many Class A shares did Kendal Vroman beneficially own after the reported transactions?

After the reported transactions the filing shows 20,070 Class A shares beneficially owned.

What prices were reported for the transactions on the Form 4?

The filing lists prices of $258.83 for the 09/15/2025 transactions and $259.83 for the 09/16/2025 surrender.

Do these Form 4 transactions indicate an open-market sale or purchase?

No. The Form 4 explains the surrenders and acquisition are related to restricted stock vesting and tax withholding, not open-market activity.