Marsh & McLennan Companies
We bring together insights from across our four global businesses to help clients confidently navigate challenges on the way to game-changing success. Our annual revenue exceeds $24 billion, reflecting our commitment to excellence and the strength of our capabilities. We’re well positioned to address the most complex challenges of our time through our four market-leading businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman.
Basic Information
- Category: Insurance Brokerage
- Founded: 1871
- Headquarters: New York, NY
- Website: mmc.com
Documented Facts
- Phone: 212-345-5000
- Email: jason.groves@mmc.com
- Industry (SIC): Insurance
- State of Incorporation: DE
- Stock ticker: MRSH (NYSE)
Evidence and Sources
- Marsh & McLennan Companies — Official Site (official)
- Marsh & McLennan Companies on linkedin (social)
- MARSH & MCLENNAN COMPANIES, INC. — SEC EDGAR (reference)
Citation Guidance
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- Data status: Enriched
- Last verified: 2025-10-28T00:23:44.891Z
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