---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-181672"
form_type: "8-K"
ticker: "MKTX"
cik: "0001278021"
company_name: "MARKETAXESS HOLDINGS INC"
filed_at: "2024-07-19T23:59:59+00:00"
generated_at: "2026-05-31T18:58:12.020818+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# MarketAxess amends bylaws; 25%+ stockholders can call special meetings

## Summary
- Stockholders owning combined 25% or more of outstanding common stock now have right to call special meetings.
- Advance notice requirements for director nominations and stockholder proposals modernized, including universal proxy rule compliance.
- Procedural rules added for pre-existing stockholder right to act by written consent.
- Officer duties clarified, indemnification provisions updated, and notice/meeting provisions allow electronic notice and remote meetings.
- Board approved amended and restated bylaws effective July 17, 2024.

## SEC filing metadata
- accession: 0001193125-24-181672
- form_type: 8-K
- ticker: MKTX
- cik: 0001278021
- company_name: MARKETAXESS HOLDINGS INC
- filed_at: 2024-07-19T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1278021/000119312524181672/0001193125-24-181672-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1278021/000119312524181672/d744954d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-181672
- JSON: https://secwatch.observer/filing/0001193125-24-181672.json
- Plain text: https://secwatch.observer/filing/0001193125-24-181672.txt

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