Arthur J. Gallagher Acquires International Insurance Brokers To Expand Australia Brokerage Capabilities

By Amit Chowdhry ● Mar 31, 2026

Arthur J. Gallagher & Co. announced it has acquired Australia-based International Insurance Brokers Pty Ltd, strengthening its retail brokerage presence in the region. Terms of the transaction were not disclosed.

International Insurance Brokers, headquartered in Brisbane, Queensland, provides retail brokerage services with a specialization in property coverage for nonprofit organizations. Following the acquisition, the firm’s team, led by Justin McPherson and Vince Mason, will join Gallagher’s Brisbane office.

The team will operate under the leadership of Alex Lumby, who oversees retail property and casualty brokerage operations for Gallagher in Australia.

Gallagher, headquartered in Rolling Meadows, Illinois, is a global insurance brokerage, risk management, and consulting services firm operating in approximately 130 countries through its owned operations and network of correspondent brokers and consultants.

KEY QUOTE:

“International Insurance Brokers brings strong niche expertise and expands our retail brokerage capabilities in Australia. I am very pleased to welcome Justin, Vince and their associates to Gallagher.”

J. Patrick Gallagher, Jr., Chairman And CEO, Arthur J. Gallagher & Co.

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