---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-24-050040"
form_type: "8-K/A"
ticker: "CBOE"
cik: "0001374310"
company_name: "Cboe Global Markets, Inc."
filed_at: "2024-12-05T23:59:59+00:00"
generated_at: "2026-05-29T07:10:37.382533+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Cboe amends bylaws: special meetings require 25% stockholder ownership

## Summary
- Only board or stockholders owning at least 25% of outstanding common stock can call a special meeting.
- New procedural and disclosure requirements for stockholder special meeting requests, including record date standing.
- Amendments address universal proxy rules (Rule 14a-19) and add compliance remedies for non-conforming stockholders.
- Lead director (if any) now authorized to call a special meeting of the board; ministerial and conforming updates also adopted.

## SEC filing metadata
- accession: 0001628280-24-050040
- form_type: 8-K/A
- ticker: CBOE
- cik: 0001374310
- company_name: Cboe Global Markets, Inc.
- filed_at: 2024-12-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 9.01, 5.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1374310/000162828024050040/0001628280-24-050040-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1374310/000162828024050040/cboe-20241129.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-24-050040
- JSON: https://secwatch.observer/filing/0001628280-24-050040.json
- Plain text: https://secwatch.observer/filing/0001628280-24-050040.txt

## Key facts
- Governance Changes
  Cboe Global Markets, Inc.: Amended bylaws to, among other things, increase threshold for calling special stockholder meetings to 25%, add procedural requirements, modify stockholder nomination and proposal procedures, address Universal Proxy Rules, modify proxy procedures, and permit lead director to call special board meetin (effective 2024-11-29).
  - Change: bylaw amendment
  - Effective: 2024-11-29
  source text: The Bylaws were amended to, among other things: • Provide that only the board of directors or stockholders that own at least 25% of the outstanding shares of the Company’s common stock can call a special meeting of stockholders;
  evidence_url: https://www.sec.gov/Archives/edgar/data/1374310/000162828024050040/0001628280-24-050040-index.htm

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