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Form 8-K

sec.gov

8-K — CME GROUP INC.

Accession: 0001156375-26-000060

Filed: 2026-09-25

Period: 2026-09-24

CIK: 0001156375

SIC: 6200 (SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES)

Item: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Documents

8-K — cme-20260924.htm (Primary)

EX-3.1 (certificateofelimination-s.htm)

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8-K

8-K (Primary)

Filename: cme-20260924.htm · Sequence: 1

cme-20260924

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_________________________________________________________

FORM 8-K

_________________________________________________________

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) September 25, 2026 (September 24, 2026)

_________________________________________________________

CME GROUP INC.

(Exact Name of Registrant as Specified in its Charter)

_________________________________________________________

Delaware 001-31553 36-4459170

(State or Other Jurisdiction

of Incorporation) (Commission

File No.) (IRS Employer

Identification No.)

20 South Wacker Drive Chicago Illinois 60606

(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (312) 930-1000

N/A

(Former Name or Former Address, if Changed Since Last Report)

______________________________________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading symbol Name of each exchange on which registered

Class A Common Stock CME Nasdaq

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405) of this chapter or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.03    Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On September 24, 2026, CME Group Inc. (the “Company”) filed a certificate of elimination with the Secretary of State of the State of Delaware which, effective upon filing, eliminated from the Company’s certificate of incorporation all matters set forth in the certificate of designations with respect to the Company’s Series G Non-Voting Convertible Preferred Stock (the “Series G Preferred Stock”). No shares of the Series G Preferred Stock were issued and outstanding at the time of the filing of the certificate of elimination.

A copy of the certificate of elimination is filed as Exhibit 3.1 to this report and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

Exhibit

Number     Description

3.1        Certificate of Elimination of Series G Non-Voting Convertible Preferred Stock of CME Group Inc.

104     The cover page from CME Group Inc.’s Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CME Group Inc.

Registrant

Date: September 25, 2026 By: /s/ Lynne Fitzpatrick

Name:

Title:

Lynne Fitzpatrick

Senior Managing Director, President and Chief Financial Officer

EX-3.1

EX-3.1

Filename: certificateofelimination-s.htm · Sequence: 2

Document

CERTIFICATE OF ELIMINATION

OF

SERIES G NON-VOTING CONVERTIBLE PREFERRED STOCK

OF

CME GROUP INC.

Pursuant to Section 151(g) of the

General Corporation Law of the State of Delaware

CME Group Inc., a Delaware corporation (the “Corporation”), does hereby certify that, at a duly convened meeting of the board of directors of the Corporation (the “Board of Directors”) on May 6, 2026, the Board of Directors duly adopted the following resolution:

RESOLVED, that none of the authorized shares of Series G Non-Voting Convertible Preferred Stock of CME Group Inc. are outstanding, and none will be issued subject to the certificate of designations previously filed with respect to such series.

[Signature page follows]

IN WITNESS WHEREOF, CME Group Inc. has caused this certificate to be duly executed in its corporate name this 24th day of September, 2026.

By:     /s/ Margaret Wright

Name: Margaret Wright

Title:     Executive Director, Associate General Counsel &

Corporate Secretary

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