---
schema_version: "secwatch.filing_event.v1"
accession: "0000062709-24-000056"
form_type: "8-K"
ticker: "MRSH"
cik: "0000062709"
company_name: "MARSH & MCLENNAN COMPANIES, INC."
filed_at: "2024-06-24T23:59:59+00:00"
generated_at: "2026-06-01T02:38:07.893757+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Marsh McLennan announces 401(k) blackout period July 26 to ~Aug 12 for plan administrator switch

## Summary
- Blackout period begins July 26, 2024 at 4:00 PM ET, ends week of August 12.
- Transition from Transamerica to Alight Solutions LLC for 401(k) recordkeeping.
- Directors and Section 16 officers prohibited from trading MMC stock acquired through service.
- Restrictions apply to direct and indirect transactions, including family members' trades.
- Exemptions exist for gifts, scheduled deliveries under equity awards, and 10b5-1 plans.

## SEC filing metadata
- accession: 0000062709-24-000056
- form_type: 8-K
- ticker: MRSH
- cik: 0000062709
- company_name: MARSH & MCLENNAN COMPANIES, INC.
- filed_at: 2024-06-24T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.04, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/62709/000006270924000056/0000062709-24-000056-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/62709/000006270924000056/mmc-20240624.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000062709-24-000056
- JSON: https://secwatch.observer/filing/0000062709-24-000056.json
- Plain text: https://secwatch.observer/filing/0000062709-24-000056.txt

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