Who Owns Gallagher?
Gallagher is the master brand of Arthur J. Gallagher & Co. (NYSE: AJG), the third-largest insurance broker in the world, headquartered in Rolling Meadows, Illinois. The brand covers the company's retail insurance brokerage, employee benefits, and specialty broking operations across roughly 130 countries.
Parent Company
Founded
1927
Status
Publicly Traded
Headquarters
GlobalOfficial Website
Who Owns Gallagher?
- Parent Company: Arthur J. Gallagher & Co.
- Ownership Type: Brand division
- Company Type: Publicly Traded
- Stock Ticker: NYSE: AJG
| Brand | Parent Company | Ownership Type |
|---|---|---|
| Gallagher | Arthur J. Gallagher & Co. | Brand division |
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History of Gallagher
- Founded: 1927
- Founders: Arthur J. Gallagher
Arthur J. Gallagher opened his Chicago insurance agency in 1927. His sons built it into a regional commercial broker, and the company listed on the NYSE in 1984 with a roll-up growth model of acquiring local agencies.
The Gallagher brand now sits atop more than a thousand acquisitions, including the 2011 Heath Lambert deal that made it a top UK broker and the August 2025 purchase of AssuredPartners for roughly $13.8 billion, the largest in company history. Gallagher reports $13.8 billion in FY2025 revenue.
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 Made / Based?
- Headquarters: Rolling Meadows, Illinois, USA
Gallagher 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 Re
Owned by Arthur J. Gallagher & Co.
Arthur J. Gallagher's reinsurance brokerage brand, created in 2021 around the Willis Re acquisition and operating across 77 offices in 27 countries.
reinsuranceinsurance-brokercatastrophe-modeling
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Gallagher Ownership: Pros & Cons
Advantages
- +Century-old name with deep US mid-market recognition
- +Founder-family leadership continuity
- +Scale from 1,000-plus acquisitions and AssuredPartners
- +Global reach across 130 countries
Considerations
- -Distant third behind Marsh and Aon in global scale
- -Growth depends on continued acquisition cadence
- -Softening insurance rates pressure commissions
Frequently Asked Questions About Gallagher
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Sources & Further Reading
- Gallagher Official Site
- Gallagher Investor Relations
- AJG 10-K (SEC EDGAR)
- Arthur J. Gallagher Company Page — /companies/arthur-j-gallagher
Competitors to Gallagher
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 |
|---|---|---|---|---|---|---|
| Marsh Mclennan | USA | 1905 | Mass market | Global | All Genders | |
| Arthur J Gallagher | USA | 2011 | Mass market | United states | All Genders |
Learn More About Competitors
InsuranceMarsh
Owned by Marsh & McLennan Companies, Inc.
World's largest insurance broker and risk advisory business, founded in 1905 and operating as the flagship business of Marsh & McLennan Companies.
insurance-brokerrisk-managementcommercial-insurance
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
Competitive Analysis
Market Positioning: Gallagher 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
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.
InsuranceMain Street America Insurance
Owned by American Family Insurance Mutual Holding Company
Commercial and farm insurance brand headquartered in Jacksonville, Florida, founded in 1923 as National Grange Mutual. Owned by American Family Insurance since a 2018 mutual merger.
insurancecommercial-insurancemutual
Privately Owned
Main Street America Insurance is privately owned, unlike Gallagher which is under a publicly traded parent company.
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 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 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 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 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 which is under a publicly traded parent company.
Arthur J. Gallagher & Co. Stock Information
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