CME Group (CME)Sr MD & Chief HR Officer sold ~$1.75M

~$1.75M

Approx. value · 5,753 sh @ $304.63

28K

Holds after · shares reported

Traded

May 18, 2026

Filed

May 19, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Mar 17, 2026InsiderOfficer sold ~$1.03M of CME shares in the open market
2. Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)
3. Mar 27, 2026CongressDisclosed purchase of CME — reported range $1,001 - $15,000
4. Apr 22, 2026Company filing · Form 8-K · ResultsReported its results
5. Apr 22, 2026Company filing · Form 8-K · Material agreementSigned an important agreement
6. Apr 29, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 7.5%
7. May 15, 2026Insider · 1 personInsiders: 2 sales (~$10.4M)
8. May 18, 2026 · this disclosureInsider · Their largest sale since 2007Officer sold ~$1.75M of CME shares in the open market

What came next

1. Jun 12, 2026Government · Federal Register proposed rulePrediction Markets; Public Interest Determinations
2. Jun 16, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On June 17, 2026, CME Group Inc. (the “Company”) announced that Terrence A. Duffy, the Company’s current Chairman and Chief Executive Officer, will become the Company’s Executive Chairman, and Lynne C. Fitzpatrick, the Company’s current President and Chief Financial Officer, will succeed Mr. Duffy as the Company’s Chief Executive Officer (the “Leadership Transition”).”
3. Jun 16, 2026CongressDisclosed partial sale of CME — reported range $1,001 - $15,000
4. Jul 15, 2026Government · Federal Register noticeOrder Under Section 36 of the Securities Exchange Act of 1934 (the “Exchange Act”) and Rule 6h-1(d) Thereunder Granting Conditional Exemptive Relief to the Chicago Mercantile Exchange Inc. From the Opening Price Settlement Requirements of Rule 6h-1(b) Under the Exchange Act for Certain Cash-Settled Security Futures
5. Jul 22, 2026Company filing · Form 8-K · ResultsReported its results
6. Aug 3, 2026Government · Federal Register noticeIn the Matter of Nasdaq PHLX LLC; Order Granting Petition for Review and Scheduling Filing of Statements Regarding an Order Approving, on an Accelerated Basis, a Proposed Rule Change, as Modified by Amendment No. 1, To List and Trade Nasdaq Bitcoin Index Options
7. Aug 6, 2026Government · Federal Register proposed ruleConflicts and Affiliations
8. Sep 9, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“As described in the attached press release, CME Group Inc. (“CME Group” or the “Company”) announced new senior leadership appointments in its finance and legal divisions.”
9. Sep 10, 2026Insider · 1 personInsiders: 2 sales (~$4.1M)
10. Sep 14, 2026InsiderDirector sold ~$140K of CME shares in the open market

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for CME Group

For CME Group, OQRO holds 6 insider filings (SEC Form 4 or Form 144), 1 Congress trade report and 60 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its CME page.

Other recent filings by Hilda Harris Piell, Sr MD & Chief HR Officer

• SEC Form 4 at CME Group (CME)Feb 28, 2025

The full history of Hilda Harris Piell, Sr MD & Chief HR Officer is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at CME Group

• SEC Form 144Sep 16, 2026
• SEC Form 4Sep 15, 2026
• SEC Form 144Sep 14, 2026
• SEC Form 4Sep 11, 2026
• SEC Form 4Sep 11, 2026
• SEC Form 144Sep 10, 2026

Everything OQRO holds on this company is on its CME page.