CME Group (CME) HR chief nets performance shares, surrenders stock for taxes

Rhea-AI Filing Summary

CME Group Sr MD & Chief HR Officer Hilda Harris Piell reported compensation-related share activity. She received 7,076 shares of Class A common stock as a grant tied to performance shares awarded in 2022 under CME Group's Omnibus Stock Plan, based on total shareholder return relative to the S&P 500 over a three-year period ending December 31, 2025. To cover tax withholding on this award, she surrendered 3,039 shares back to the company. After these transactions, she directly holds 33,455 shares of CME Group Class A common stock.

Insights

Equity compensation analyst

Routine equity award vesting with tax withholding, not an open-market trade.

The transactions reflect the vesting of performance shares granted in 2022 under CME Group's Omnibus Stock Plan. The 7,076-share award was earned based on total shareholder return relative to the S&P 500 over a defined three-year period.

The 3,039-share F-code disposition represents shares surrendered to the company to satisfy tax withholding obligations on the award. This is a standard, non-market mechanism and does not involve an open-market sale. After these entries, Ms. Piell directly holds 33,455 shares.

Because the activity is compensation-driven rather than discretionary buying or selling, it carries limited signaling value about Ms. Piell's view of CME Group's stock. Future filings may update her equity position as additional awards vest or new grants are made.

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).

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^*

Piell Hilda Harris

(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)
	Sr MD & Chief HR Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

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	03/15/2026		A		7,076(1)	A	$311.4	36,494	D
Common Stock Class A	03/15/2026		F		3,039(2)	D	$311.4	33,455	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. Represents the vesting of performance shares granted in 2022 under CME Group's Omnibus Stock Plan. The number of shares was determined based on the company's achievement of total shareholder return relative to the S&P 500 measured over a three-year performance period from January 1, 2023 through December 31, 2025.

2. Ms. Piell surrendered shares to the company in order to fulfill tax withholding obligations related to the receipt of the performance share award.

Remarks:

	By: Margaret Austin Wright For: Hilda Harris Piell	03/17/2026
	** 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 Hilda Harris Piell?

CME Group reported that Sr MD & Chief HR Officer Hilda Harris Piell received 7,076 shares of Class A common stock from a performance share award and surrendered 3,039 shares to cover tax withholding. These entries are compensation-related, not open-market trades.

Was the CME (CME) insider activity a stock purchase or sale?

The activity was neither a traditional open-market purchase nor sale. Ms. Piell acquired shares through a vested performance award and then surrendered 3,039 shares back to CME Group to satisfy tax withholding obligations, a common non-market equity compensation practice.

How many CME (CME) shares does Hilda Harris Piell hold after this Form 4?

After the reported transactions, Hilda Harris Piell directly holds 33,455 shares of CME Group Class A common stock. This figure reflects the net impact of receiving 7,076 performance-based shares and surrendering 3,039 shares to cover related tax withholding obligations.

What performance period determined the CME (CME) shares granted to Hilda Harris Piell?

The 7,076-share grant reflects performance shares granted in 2022 and earned based on CME Group's total shareholder return versus the S&P 500. The measurement period ran from January 1, 2023 through December 31, 2025, as defined under the company's Omnibus Stock Plan.

Why did CME (CME) insider Hilda Harris Piell surrender shares in this filing?

Ms. Piell surrendered 3,039 shares to CME Group to meet tax withholding obligations tied to the vesting of her performance share award. Such F-code dispositions are administrative tax payments using shares rather than cash and do not represent an open-market sale of stock.

What role does Hilda Harris Piell hold at CME (CME) in this Form 4?

In this Form 4, Hilda Harris Piell is identified as an officer of CME Group, serving as Senior Managing Director & Chief Human Resources Officer. The reported equity transactions relate to her compensation under CME Group's Omnibus Stock Plan, not to discretionary trading activity.