---
schema_version: "secwatch.filing_event.v1"
accession: "0000062709-26-000071"
form_type: "8-K"
ticker: "MRSH"
cik: "0000062709"
company_name: "MARSH & MCLENNAN COMPANIES, INC."
filed_at: "2026-03-10T23:59:59+00:00"
generated_at: "2026-05-15T17:17:25.855090+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Nick Studer to succeed Martin South as Marsh Risk CEO; South becomes Chief Client Officer

## Summary
- Effective April 1, 2026: Nick Studer becomes President and CEO of Marsh Risk, replacing Martin South.
- Martin South transitions to Chief Client Officer of Marsh, focusing on client experience and AI.
- Studer previously served as CEO of Oliver Wyman; South had been Marsh Risk CEO since 2022.
- South's compensation: base salary unchanged, annual bonus target $1.5M, LTI target $1.75M for 2026/2027.
- Both report to Marsh President and CEO John Doyle and remain on the Executive Committee.

## SEC filing metadata
- accession: 0000062709-26-000071
- form_type: 8-K
- ticker: MRSH
- cik: 0000062709
- company_name: MARSH & MCLENNAN COMPANIES, INC.
- filed_at: 2026-03-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/62709/000006270926000071/0000062709-26-000071-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/62709/000006270926000071/asouthappointment03102026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000062709-26-000071
- JSON: https://secwatch.observer/filing/0000062709-26-000071.json
- Plain text: https://secwatch.observer/filing/0000062709-26-000071.txt

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