Arthur J. Gallagher
Insurance Brokers
Founded in 1927 as a one-person agency, Gallagher’s primary business is insurance brokerage, with a focus on serving middle-market companies. The company’s risk management segment provides third-party claims adjustment to companies that choose to self-insure. Gallagher has about 56,000 employees and generates about a third of its revenue internationally, primarily in Australia, Canada, New Zealand, and the UK

$82.2B

Market Cap • 3/13/2025

1927

(98 years)

Founded

1987

(38 years ago)

IPO

NYSE

Listing Exchange

Flag of US

Rolling Meadows

Headquarters • Illinois

S&P500 Participant

Index Composite • 2025