Arthur J. Gallagher & Co. Acquires Acumen Advisors, Inc.

Marsh McLennan Agency Acquires Acumen Solutions Group

January 4, 2025

Insurance

Marsh McLennan Agency (MMA), a business of Marsh, has acquired Acumen Solutions Group, a Melville, New York–based full-service insurance agency. All Acumen employees, including President Tony D'Elia, will join MMA and continue operating out of Melville; terms were not disclosed.

Arthur J. Gallagher & Co. Acquires 3D Advisors

February 9, 2026

Insurance

Arthur J. Gallagher & Co. has acquired 3D Advisors, a Shelby Township, Michigan-based brokerage general agency that provides life insurance, annuity, and long-term care solutions for financial advisors. The acquisition is intended to expand Gallagher’s life, annuity and long-term care brokerage capabilities and deepen its employee benefits consulting and brokerage platform; terms were not disclosed.

Arthur J. Gallagher & Co. Acquires Agilis Partners LLC

February 18, 2025

Wealth Management

Arthur J. Gallagher & Co. has acquired Waltham, Massachusetts-based Agilis Partners LLC, a retirement plan and investment consulting firm with offices in greater Boston, New York and Denver. The acquisition will enhance Gallagher's retirement plan and investment consulting capabilities; terms were not disclosed and Agilis leadership will remain in place.

Arthur J. Gallagher & Co. Acquires Hagan Insurance Group

July 25, 2023

Insurance

Arthur J. Gallagher & Co. acquired Sioux Falls–based Hagan Insurance Group to expand its association and affinity benefits capabilities. The Hagan team will remain in place and operate under Gallagher's Affinity North America leadership to provide complementary expertise and cross-selling opportunities.

Arthur J. Gallagher & Co. Acquires Cleary Benefits Group Inc.

July 8, 2024

Insurance

Arthur J. Gallagher & Co. (Gallagher) has acquired Danbury, Connecticut-based Cleary Benefits Group Inc., a health and benefits consulting firm serving primarily mid-size to large commercial clients. Cleary's leadership team will remain in place and operate under Gallagher's Northeast region benefits organization; terms were not disclosed.

Arthur J. Gallagher & Co. Acquires AssuredPartners for $13.45B

December 9, 2024

Insurance

Arthur J. Gallagher & Co. agreed to acquire AssuredPartners in a $13.45 billion all-cash transaction, buying stakes held by private equity investors. AssuredPartners is a large insurance brokerage with c.10,900 colleagues and ~400 offices across the U.S., the United Kingdom and Ireland; the deal expands Gallagher's brokerage scale and capabilities and is subject to customary regulatory approvals.