---
schema_version: "secwatch.filing_event.v1"
accession: "0001096343-26-000018"
form_type: "8-K"
ticker: "MKL"
cik: "0001096343"
company_name: "MARKEL GROUP INC."
filed_at: "2026-02-26T23:59:59+00:00"
generated_at: "2026-05-15T23:24:13.412110+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Markel Group EVP/COO Heaton to depart; Wilson, Crowley appointed EVPs; bylaw amended for shareholder special meetings

## Summary
- Mike Heaton, EVP & COO, to depart Markel Group effective March 23, 2026; severance entitlements triggered.
- Simon Wilson (CEO, Markel Insurance) and Andrew Crowley (President, Markel Ventures) appointed EVPs of Markel Group.
- Amy McCann promoted to Chief Administrative Officer, Markel Group, retaining role as GC of Markel Ventures.
- Bylaws amended to permit special meetings by shareholders owning 25% voting power for at least one year.

## SEC filing metadata
- accession: 0001096343-26-000018
- form_type: 8-K
- ticker: MKL
- cik: 0001096343
- company_name: MARKEL GROUP INC.
- filed_at: 2026-02-26T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1096343/000109634326000018/0001096343-26-000018-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1096343/000109634326000018/mkl-20260221.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001096343-26-000018
- JSON: https://secwatch.observer/filing/0001096343-26-000018.json
- Plain text: https://secwatch.observer/filing/0001096343-26-000018.txt

## Source-grounded claims
- claim_id: 14434d1928e6fc0790f54ace4a7c6c451ed59aeb
  claim: MARKEL GROUP INC.: Amended and restated bylaws to allow shareholders owning at least 25% voting power for at least one year to call special meetings (effective 2026-02-25).
  evidence_excerpt: On February 25, 2026, the Board amended and restated the Company’s Bylaws (as amended and restated, the Amended and Restated Bylaws) to provide that special meetings of shareholders of the Company may be called upon the written request of shareholders who own, for a period of at least one year, not less than twenty-five percent (25%) of the voting power of the outstanding shares of the Company’s stock entitled to vote at the special meeting and who comply with the requirements and procedures set forth in the Amended and Restated Bylaws.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1096343/000109634326000018/0001096343-26-000018-index.htm

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