---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-054102"
form_type: "8-K"
ticker: "CME"
cik: "0001156375"
company_name: "CME GROUP INC."
filed_at: "2023-02-28T23:59:59+00:00"
generated_at: "2026-06-18T21:00:39.823125+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# CME Group CFO John Pietrowicz to retire April 1; Lynne Fitzpatrick named successor

## Summary
- John W. Pietrowicz retires as CFO effective April 1, 2023; will serve as Special Advisor until Dec 31, 2023.
- Lynne Fitzpatrick (44) appointed CFO effective April 1, 2023; previously Deputy CFO since Feb 2022.
- Fitzpatrick joined CME in 2006, led corporate development, M&A, and treasury as Managing Director.
- No family relationships or material transactions between Fitzpatrick and company executives or directors.

## SEC filing metadata
- accession: 0001193125-23-054102
- form_type: 8-K
- ticker: CME
- cik: 0001156375
- company_name: CME GROUP INC.
- filed_at: 2023-02-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1156375/000119312523054102/0001193125-23-054102-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1156375/000119312523054102/d439642d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-054102
- JSON: https://secwatch.observer/filing/0001193125-23-054102.json
- Plain text: https://secwatch.observer/filing/0001193125-23-054102.txt

## Key facts
- Executive change
  Lynne Fitzpatrick was appointed as Chief Financial Officer at CME GROUP INC..
  - Action: appointed
  - Role: Chief Financial Officer
  source text: Mr. Pietrowicz will retire from his position as Chief Financial Officer and Ms. Fitzpatrick will assume the role effective as of April 1, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1156375/000119312523054102/0001193125-23-054102-index.htm
- Executive change
  John W. Pietrowicz departed as Chief Financial Officer at CME GROUP INC..
  - Action: retire
  - Role: Chief Financial Officer
  source text: Mr. Pietrowicz will retire from his position as Chief Financial Officer and Ms. Fitzpatrick will assume the role effective as of April 1, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1156375/000119312523054102/0001193125-23-054102-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.