Who owns Guy Carpenter?
Guy Carpenter is owned by Marsh (the United States, NYSE: MRSH).[1]
Evidence: Marsh McLennan Companies, Inc. Annual Report on Form 10-K filed 2026-02-09, SEC EDGAR, 9 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- Marsh McLennan Companies, Inc. verified
- Owner HQ
- 🇺🇸 United States, New York
- Origin
- 🇺🇸 United States
- Category
- Finance & insurance › Insurance › Reinsurance
- Parent ticker
- NYSE: MRSH
- Last verified
- · 1 sources
About Guy Carpenter
Guy Carpenter is the reinsurance broking business of Marsh. The 2025 Form 10-K says Mercer and Guy Carpenter continue to report under their current brands through a transition period. Exhibit 21 lists Guy Carpenter & Company Limited and many national companies.
Ownership timeline of Guy Carpenter
Where Guy Carpenter sits in Marsh
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Marsh ownership tree →
See the full Marsh brand portfolio (3) →
Other brands owned by Marsh
Marsh controls 3 brands on Brandtree, 3 of them in finance & insurance.
Also in finance & insurance
Other brands in reinsurance, and who owns them
The 12 brands in reinsurance on Brandtree belong to 11 owners. The largest is RenaissanceRe, with 2.
| Brand | Owner | Owner based in |
|---|---|---|
| Renaissance Reinsurance | RenaissanceRe | 🇧🇲 Bermuda |
| Arch Re | Arch Capital | 🇧🇲 Bermuda |
| Mt. Logan Re | Everest Group | 🇧🇲 Bermuda |
| GIC Re | GIC Re | 🇮🇳 India |
| Nephila | Markel Group | 🇺🇸 United States |
| Pacific Life Re | Pacific Life | 🇺🇸 United States |
| QBE Re | QBE | 🇦🇺 Australia |
| RGA | RGA | 🇺🇸 United States |
About the owner: Marsh
Marsh is a publicly listed company headquartered in New York, United States. Brandtree records 3 brands under its control, and it is listed as NYSE: MRSH.
Marsh McLennan Companies, Inc. changed its brand name from Marsh McLennan to Marsh effective 14 January 2026, and renamed its Marsh business Marsh Risk. Its 2025 Form 10-K reports the Risk and Insurance Services segment, run through Marsh Risk and Guy Carpenter, and a Consulting segment; its shares now trade as MRSH. The registered legal name is still Marsh McLennan Companies, Inc.
🇺🇸 Guy Carpenter and other American brands
Brandtree records a controlling owner for 2,399 brands that began in the United States. 461 of them (19%) are now controlled by a company headquartered in another country; Guy Carpenter is not one of them.
- AllianceBernstein — Equitable Holdings 🇺🇸
- Allstate — Allstate 🇺🇸
- American Income Life — Globe Life 🇺🇸
- Barclays US Consumer Bank — Barclays 🇬🇧
- Berkley One — W. R. Berkley 🇺🇸
- CareScout — Genworth 🇺🇸
Frequently asked questions
Who is the parent company of Guy Carpenter?
The parent company of Guy Carpenter is Marsh, a publicly listed company headquartered in the United States.
Is Guy Carpenter American?
Yes. Guy Carpenter originated in the United States and its owner, Marsh, is also headquartered in the United States.
Is Guy Carpenter still owned by Marsh?
Yes. As of 13 October 2026, Guy Carpenter is still owned by Marsh. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Marsh McLennan Companies, Inc. Annual Report on Form 10-K filed 2026-02-09 — SEC EDGAR, SEC Form 10-K, published 9 February 2026; retrieved 13 October 2026.
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