Form4insider filings, from the source

Insider · CIK 0001212809

Terrence A Duffy

Files at: CME. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $4.1M · 1net −$4.1M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 15, 2026 AForm 4 →Sep 17, 4:21 pm EDTCME GROUP INC.CME21,812$275.09$6,000,26362,442—
Sep 10, 2026 SForm 4 →Sep 11, 5:17 pm EDTCME GROUP INC.CME15,000$274.44$4,116,53940,630−27.0%

Reported trades — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.