---
schema_version: "secwatch.filing_event.v1"
accession: "0000062709-21-000051"
form_type: "8-K"
ticker: "MRSH"
cik: "0000062709"
company_name: "MARSH & MCLENNAN COMPANIES, INC."
filed_at: "2021-11-22T23:59:59+00:00"
generated_at: "2026-06-28T06:19:51.304829+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Marsh McLennan promotes John Doyle to Group President and COO, names new Marsh and Guy Carpenter CEOs

## Summary
- John Doyle promoted to Group President & COO of Marsh McLennan effective Jan 1, 2022; will report to CEO Dan Glaser.
- Martin South succeeds Doyle as Marsh President & CEO; Dean Klisura succeeds Hearn as Guy Carpenter President & CEO, both effective Jan 1, 2022.
- Doyle receives $1M stock unit grant (vests Jan 2025), $1.2M base salary, $2.8M bonus target, $4M LTI target for 2022.
- Peter Hearn steps down as Guy Carpenter CEO, continues as Vice Chair; Dominic Burke to retire mid-Jan 2022.

## SEC filing metadata
- accession: 0000062709-21-000051
- form_type: 8-K
- ticker: MRSH
- cik: 0000062709
- company_name: MARSH & MCLENNAN COMPANIES, INC.
- filed_at: 2021-11-22T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/0000062709-21-000051-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/mmc-20211117.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000062709-21-000051
- JSON: https://secwatch.observer/filing/0000062709-21-000051.json
- Plain text: https://secwatch.observer/filing/0000062709-21-000051.txt

## Key facts
- Executive change
  Dean Klisura was appointed as President and Chief Executive Officer of Guy Carpenter at MARSH & MCLENNAN COMPANIES, INC..
  - Action: appointed
  - Role: President and Chief Executive Officer of Guy Carpenter
  source text: Dean Klisura will be appointed President and Chief Executive Officer of Guy Carpenter and Vice Chair of the Company, effective January 1, 2022
  evidence_url: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/0000062709-21-000051-index.htm
- Executive change
  Martin South was appointed as President and Chief Executive Officer of Marsh LLC at MARSH & MCLENNAN COMPANIES, INC..
  - Action: succeed
  - Role: President and Chief Executive Officer of Marsh LLC
  source text: Martin South, President of Marsh US and Canada, will succeed Mr. Doyle as President and Chief Executive Officer of Marsh LLC, effective January 1, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/0000062709-21-000051-index.htm
- Executive change
  John Doyle was appointed as Group President and Chief Operating Officer at MARSH & MCLENNAN COMPANIES, INC..
  - Action: appointed
  - Role: Group President and Chief Operating Officer
  source text: John Doyle, 57, will be appointed Group President and Chief Operating Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/0000062709-21-000051-index.htm
- Executive change
  Peter Hearn changed role as Vice Chair at MARSH & MCLENNAN COMPANIES, INC..
  - Action: will no longer serve as
  - Role: Vice Chair
  source text: Effective January 1, 2022, Mr. Hearn will no longer serve as the President and Chief Executive Officer of Guy Carpenter.
  evidence_url: https://www.sec.gov/Archives/edgar/data/62709/000006270921000051/0000062709-21-000051-index.htm

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