Who Owns Gallagher Re?
Gallagher Re is the reinsurance brokerage brand of Arthur J. Gallagher & Co. (NYSE: AJG), created in 2021 around the acquired Willis Re business. It places reinsurance for insurers and managing general underwriters from more than 77 offices in 27 countries and accounts for about 12% of Gallagher's brokerage segment revenue.
Parent Company
Acquired
2021
Status
Publicly Traded
Headquarters
Gallagher Re Timeline
GlobalOfficial Website
Who Owns Gallagher Re?
- Parent Company: Arthur J. Gallagher & Co.
- Ownership Type: Brand division
- Acquisition Year: 2021
- Company Type: Publicly Traded
- Stock Ticker: NYSE: AJG
| Brand | Parent Company | Ownership Type |
|---|---|---|
| Gallagher Re | Arthur J. Gallagher & Co. | Brand division |
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History of Gallagher Re
- Founded: 2021
- Founders: Arthur J. Gallagher & Co. (via Willis Re acquisition)
- Acquired by Arthur J. Gallagher & Co.: 2021
Gallagher announced the creation of the Gallagher Re brand in 2021 after agreeing to buy Willis Re, the reinsurance brokerage of Willis Towers Watson, for $3.25 billion upfront plus a potential earn-out. Regulators had required Willis to divest the unit as a condition of its aborted Aon merger, making it available to Gallagher.
The deal instantly made Gallagher a top-tier reinsurance broker rather than a minor participant. Gallagher merged its existing reinsurance operations into the acquired business and has since invested in facultative capability and capital markets services, including catastrophe bonds and weather derivatives under the Gallagher Securities arm.
About Arthur J. Gallagher & Co.
What is Arthur J. Gallagher & Co.?
Arthur J. Gallagher & Co. is a global insurance brokerage and risk management company headquartered in Rolling Meadows, Illinois. Founded in 1927, it is the world's third-largest insurance broker, reporting FY2025 revenue of $13.8 billion.
Is Arthur J. Gallagher publicly traded?
Yes. It trades on the New York Stock Exchange under the ticker AJG.
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Who runs Arthur J. Gallagher?
J. Patrick Gallagher Jr., grandson of the founder, serves as chairman, president, and chief executive officer.
What did Gallagher pay for AssuredPartners?
Gallagher closed the acquisition of AssuredPartners on August 18, 2025 for approximately $13.8 billion, its largest deal ever, adding about 10,900 employees.
What are Gallagher's business segments?
Brokerage, covering retail and wholesale broking plus Gallagher Re reinsurance, and Risk Management, built around the Gallagher Bassett claims administration business.
- Founded: 1927
- Headquarters: Rolling Meadows, Illinois, USA
- Company Type: Publicly Traded
- Stock: NYSE: AJG
- Revenue: $13.8 billion (FY2025)
- Employees: Approximately 71,800
Where Is Gallagher Re Made / Based?
- Headquarters: London, England, United Kingdom
Gallagher Re Categories & Tags
Brands Owned by Arthur J. Gallagher & Co.
InsuranceAssuredPartners
Owned by Arthur J. Gallagher & Co.
The US retail insurance brokerage Arthur J. Gallagher acquired for roughly $13.8 billion in August 2025, now being integrated into the Gallagher brand.
insurance-brokerretail-brokerageemployee-benefits
InsuranceGallagher Bassett
Owned by Arthur J. Gallagher & Co.
Arthur J. Gallagher's third-party claims administration and risk management brand, one of the largest TPAs in the world, serving corporations, insurers, and public entities.
claims-administrationtparisk-management
InsuranceGallagher
Owned by Arthur J. Gallagher & Co.
The master brand of Arthur J. Gallagher & Co., the world's third-largest insurance broker covering commercial, benefits, specialty, and personal lines.
insurance-brokerrisk-managementemployee-benefits
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Gallagher Re Ownership: Pros & Cons
Advantages
- +Instantly scaled through the Willis Re acquisition
- +London hub at the center of the reinsurance market
- +Growing capital markets and ILS business via Gallagher Securities
- +Catastrophe-driven demand for reinsurance capacity
Considerations
- -Guy Carpenter and Aon hold larger reinsurance share
- -Reinsurance pricing cycles compress brokerage economics
- -Retention of acquired Willis Re talent is an ongoing task
Frequently Asked Questions About Gallagher Re
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Sources & Further Reading
- Gallagher Re Official Site
- Gallagher Investor Relations
- AJG 10-K (SEC EDGAR)
- Arthur J. Gallagher Company Page — /companies/arthur-j-gallagher
Competitors to Gallagher Re
These competing brands operate in the same categories and provide similar products or services. Compare key attributes to understand market positioning and competitive landscape.
| Brand | Parent Company | Country | Founded | Market Position | Primary Market | Gender Target |
|---|---|---|---|---|---|---|
| Cincinnati Financial | USA | 2006 | Mass market | United states | All Genders | |
| Marsh Mclennan | USA | 1922 | Mass market | Global | All Genders |
Learn More About Competitors
InsuranceCincinnati Re
Owned by Cincinnati Financial Corporation
The reinsurance assumed operations of The Cincinnati Insurance Company, writing treaty and facultative reinsurance for other insurers under the Cincinnati Financial umbrella.
reinsurancetreatyfacultative
InsuranceGuy Carpenter
Owned by Marsh & McLennan Companies, Inc.
Leading global reinsurance broker founded in 1922, a Marsh business since 1923 that will adopt the Marsh Re name in 2027.
reinsuranceinsurance-brokercapital-advisory
Competitive Analysis
Market Positioning: Gallagher Re competes with 2 brands in the same categories, ranging from mass market to luxury positioning.
Geographic Distribution: Competitors are headquartered across multiple regions, indicating global competition in this market segment.
Brand Heritage: Competitor brands range from established heritage brands to newer market entrants, with founding years spanning several decades.
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Independent Alternatives to Gallagher Re
Looking for brands with different ownership structures? These similar brands are not owned by Arthur J. Gallagher & Co., giving you alternative choices that support different corporate structures.
InsuranceAllied Insurance
Owned by Nationwide Mutual Insurance Company
Des Moines-founded insurance brand of Nationwide Mutual, serving independent agents and brokers for personal and small commercial lines since 1929.
insuranceindependent-agentsproperty-casualty
Privately Owned
Allied Insurance is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
InsuranceAmerican Family Insurance
Owned by American Family Insurance Mutual Holding Company
Flagship insurance brand of the American Family Insurance mutual group, founded in 1927. Auto, home, life, farm, and business coverage sold through exclusive agents in 19 states.
insuranceauto-insurancehome-insurance
Privately Owned
American Family Insurance is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
InsuranceAuto-Owners Insurance
Owned by Auto-Owners Insurance Company
Flagship brand of Auto-Owners Insurance Company, the policyholder-owned mutual insurer selling auto, home, business, and life coverage through independent agents since 1916.
insurancemutual-insuranceauto-insurance
Privately Owned
Auto-Owners Insurance is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
InsuranceChapter
Owned by Memoir, Inc. (Chapter)
Medicare navigation and advisory brand operated by Memoir, Inc., a private New York company valued at $3 billion in its April 2026 Series E round.
medicareinsurance-advisoryhealth-insurance
Privately Owned
Chapter is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
InsuranceFarmers Insurance
Owned by Farmers Insurance Group of Companies
Flagship brand of Farmers Insurance Group, the policyholder-owned insurer selling auto, home, and life coverage through exclusive and independent agents since 1928.
insurancemutual-insuranceauto-insurance
Privately Owned
Farmers Insurance is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
InsuranceFM
Owned by FM
The master brand of FM, the mutual commercial property insurer formerly known as FM Global, headquartered in Johnston, Rhode Island.
property-insuranceloss-preventionmutual
Privately Owned
FM is privately owned, unlike Gallagher Re which is under a publicly traded parent company.
Arthur J. Gallagher & Co. Stock Information
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