---
schema_version: "secwatch.filing_event.v1"
accession: "0000062709-26-000035"
form_type: "8-K"
ticker: "MRSH"
cik: "0000062709"
company_name: "MARSH & MCLENNAN COMPANIES, INC."
filed_at: "2026-02-25T23:59:59+00:00"
generated_at: "2026-05-16T00:32:54.687141+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Marsh & McLennan appoints Peter Harrison as independent director, effective immediately

## Summary
- Peter Harrison, age 59, appointed to Board effective February 25, 2026; Board expands to 13 members.
- Harrison retired from Schroders plc in 2024, served as CEO from 2016 and Global Head of Investment.
- Also currently on boards of Morgan Sindall plc and Lazard, Inc.
- Board committee assignments to be disclosed in the 2026 proxy statement.
- Harrison's appointment reflects commitment to adding financial services and global leadership experience.

## SEC filing metadata
- accession: 0000062709-26-000035
- form_type: 8-K
- ticker: MRSH
- cik: 0000062709
- company_name: MARSH & MCLENNAN COMPANIES, INC.
- filed_at: 2026-02-25T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/62709/000006270926000035/0000062709-26-000035-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/62709/000006270926000035/adirectorappointment022520.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000062709-26-000035
- JSON: https://secwatch.observer/filing/0000062709-26-000035.json
- Plain text: https://secwatch.observer/filing/0000062709-26-000035.txt

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