Vroman Ken 4

What Happened
Ken Vroman, Chief Transformation Officer of CME Group Inc. (CME), sold 5,160 shares of CME Class A common stock on March 12, 2026. The filing reports a weighted-average sale price of $309.00 per share for an aggregate proceeds of $1,594,440. The reported prices were aggregated for reporting purposes; the actual sale prices ranged from $308.969 to $309.11.

Key Details

• Transaction date: March 12, 2026
• Transaction type/code: Sale (S) — open market or private sale (as reported)
• Shares sold: 5,160 shares at a weighted-average price of $309.00
• Aggregate proceeds: $1,594,440
• Price range disclosed (F1): $308.969 to $309.11; weighted average reported as $309.00
• Shares owned after transaction: Not disclosed in this Form 4 filing
• Notable footnote: Company aggregated sale prices within $1 for reporting and will provide transaction records on request (Footnote F1)
• Filing timeliness: Reported on March 12, 2026 (same date as transaction); no late filing indicated in the form

Context: This is a straightforward sale by an officer. Sales are routinely made for a variety of personal reasons and do not, by themselves, indicate management sentiment about the company’s prospects. No 10b5-1 plan, tax-withholding, option exercise, or other special circumstances are disclosed in this filing.