John W. Pietrowicz

Companies

• Marex Group LtdBoard member Mar 18, 2026 to now¹
• CME GroupChief financial officer Dec 19, 2014 to Sep 19, 2022²
• CME GroupMD, Bus. Dev. & Corp Finance Feb 26, 2010 to Sep 17, 2013³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CME Group CME55,238 shares⁴$16.2M at $293.63Sep 16, 2022
• MMarex Group Ltd MRX23,771 shares⁵$1.7M at $69.61Jun 9, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jun 9, 2026Granted 2,070 shares of Marex Group Ltd⁵
• Jun 1, 2026Shares withheld for tax 558 shares at $52.94 of Marex Group Ltd⁶
• Sep 16, 2022Shares withheld for tax 387 shares at $191.56 of CME Group⁴
• Sep 15, 2022Granted 4,716 shares of CME Group⁴
• Sep 15, 2022Shares withheld for tax 958 shares at $190.77 of CME Group⁴
• Sep 14, 2022Shares withheld for tax 446 shares at $191.30 of CME Group⁷
• Sep 14, 2022Shares withheld for tax 446 shares of CME Group⁸
• Mar 15, 2022Shares withheld for tax 1,331 shares at $232.00 of CME Group⁹
• Mar 15, 2022Granted 3,290 shares at $232.00 of CME Group⁹