[Form 4] CME GROUP INC. Insider Trading Activity

Rhea-AI Filing Summary

Sunil K. Cutinho, Chief Information Officer of CME Group Inc. (CME), reported share transactions on Form 4 tied to restricted stock vesting. On 09/15/2025 he surrendered 1,117 Class A shares at $258.83 per share to satisfy tax withholding and later received 3,044 shares at the same price, leaving him with 19,367 Class A shares after that trade. On 09/16/2025 he surrendered 379 Class A shares at $259.83 for tax withholding, resulting in 18,988 shares held. The filing is signed on behalf of Mr. Cutinho on 09/17/2025 and lists these transactions as related to vesting and tax obligations.

Positive

• Disclosure compliance: Form 4 filed and signed, showing timely reporting of insider transactions.
• Clear reason provided: Shares surrendered explicitly stated as fulfilling tax withholding obligations upon vesting of restricted stock.
• Transaction detail: Specific share counts and prices are disclosed for each reported date (1,117 at $258.83; 3,044 at $258.83; 379 at $259.83).

Negative

• Reduction in holdings: Surrendered shares reduced beneficial ownership from 19,367 to 18,988 Class A shares.
• Limited context: Filing does not state total company outstanding shares or materiality of the change, so investor impact cannot be assessed from this form alone.

Insights

Corporate Governance Expert

TL;DR: Routine insider reporting of restricted stock vesting and tax-withholding share surrender; no governance red flags in this filing.

The Form 4 shows the CIO complied with Section 16 reporting by disclosing share surrender to satisfy tax withholding on vested restricted stock and subsequent receipt of vested shares. The transactions are standard for equity compensation: share forfeiture to cover taxes and an increase in beneficially owned shares when net vested shares are received. Timing and signatures are present, indicating administrative compliance. No related-party transfers, option exercises or derivative positions are reported.

Securities Analyst

TL;DR: Insider activity reflects compensation mechanics, not trading for investment reasons; impact on float or valuation is immaterial.

The reported movements—surrender of 1,117 and 379 shares for tax withholding and receipt of 3,044 vested shares—are compensation-driven. Reported prices ($258.83 and $259.83) reflect the transaction pricing on the reported dates but do not indicate open-market purchases or sales. The net change in holdings (to 18,988 shares) is small relative to company outstanding shares and thus unlikely to be material to investors' valuation models. Disclosure timing appears routine and complete for the events disclosed.

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^*

Cutinho Sunil

(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 Information 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		1,117(1)	D	$258.83	16,323	D
Common Stock Class A	09/15/2025		A		3,044	A	$258.83	19,367	D
Common Stock Class A	09/16/2025		F		379(2)	D	$259.83	18,988	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. Cutinho surrendered shares to the Company in order to fulfill tax withholding obligations upon the vesting of restricted stock on September 15, 2025.

2. Mr. Cutinho 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: Sunil Kiran Cutinho	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 did CME insider Sunil K. Cutinho report on Form 4 (CME)?

He reported surrendering shares for tax withholding and receiving vested restricted shares, resulting in 18,988 Class A shares held after transactions.

Why were shares surrendered in the Form 4 filed by Sunil Cutinho?

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 shares were involved and at what prices in the reported transactions?

On 09/15/2025 surrendered 1,117 shares at $258.83 and received 3,044 shares at $258.83; on 09/16/2025 surrendered 379 shares at $259.83.

What is Sunil Cutinho's role at CME as listed on the Form 4?

He is identified as an Officer, serving as Chief Information Officer.

When was the Form 4 signed and filed for these transactions?

The form shows a signature executed on behalf of Sunil Kiran Cutinho by Margaret Austin Wright dated 09/17/2025.