---
schema_version: "secwatch.filing_event.v1"
accession: "0001156375-25-000184"
form_type: "8-K"
ticker: "CME"
cik: "0001156375"
company_name: "CME GROUP INC."
filed_at: "2025-07-25T23:59:59+00:00"
generated_at: "2026-05-18T00:49:03.961786+00:00"
event_type: "litigation"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# CME Group wins unanimous jury verdict in Class B shareholder lawsuit

## Summary
- Jury returned unanimous verdict on July 25, 2025 in favor of CME Group and CBOT.
- Lawsuit filed January 15, 2014 by certain Class B shareholders alleging breach of contract and implied covenant.
- Case was in Circuit Court of Cook County, Chancery Division; putative class action dismissed.
- Verdict covers alleged violations of core rights in Certificates of Incorporation.

## SEC filing metadata
- accession: 0001156375-25-000184
- form_type: 8-K
- ticker: CME
- cik: 0001156375
- company_name: CME GROUP INC.
- filed_at: 2025-07-25T23:59:59+00:00
- event_type: litigation
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1156375/000115637525000184/0001156375-25-000184-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1156375/000115637525000184/cme-20250725.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001156375-25-000184
- JSON: https://secwatch.observer/filing/0001156375-25-000184.json
- Plain text: https://secwatch.observer/filing/0001156375-25-000184.txt

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