Arthur J. Gallagher
Compare Arthur J. Gallagher…Aggressive middle-market broker roll-up; 40+ acquisitions/yr; ~$11B 2024 revenue; founder-family Gallagher still operationally involved.
SectorsInsurance
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Arthur J. GallagherAggressive middle-market broker roll-up; 40+ acquisitions/yr; ~$11B 2024 revenue; founder-family Gallagher still operationally involved.
Annual revenue split between Brokerage (retail + wholesale + reinsurance brokering) and Risk Management (Gallagher Bassett claims TPA). Brokerage is ~90% of revenue and the M&A growth engine; Risk Management is the steady fee-based TPA business.
2020 — 2024
Source: Arthur J. Gallagher 10-K filings (segment revenue, 2020-2024) (Updated: 2024-FY)
Number of completed M&A transactions per year. Gallagher's signature roll-up engine: ~40 tuck-in brokerages annually for nearly a decade. 2024 includes the announcement of the AssuredPartners acquisition ($13.45B, closed Mar 2025) — by far the largest deal in Gallagher history and a one-time outlier vs the typical sub-$100M tuck-ins.
2018 — 2025
Source: Arthur J. Gallagher 10-K filings + annual M&A summary investor presentations (2018-2025) (Updated: 2025-FY)
Quarterly breakdown of revenue by product line and service category
2021-Q2 — 2026-Q1
Quarterly breakdown of revenue by geographic region
2021-Q2 — 2026-Q1
Data from SEC filings via FMP • 59 periods available