Arthur J. Gallagher & Co. Acquires Dyste Williams

Arthur J. Gallagher & Co. Acquires Dean R. Casey & Associates

May 6, 2025

Financial Services

Arthur J. Gallagher & Co. (Gallagher) has acquired Dallas-based employee benefits brokerage Dean R. Casey & Associates. Dean Casey and his team will join Gallagher’s Dallas office to bolster the firm’s small-group benefits brokerage capabilities in Texas; terms were not disclosed.

Arthur J. Gallagher & Co. Acquires W.P. Dolle, LLC

October 12, 2021

Insurance

Arthur J. Gallagher & Co. acquired Cincinnati-based retail property/casualty and employee benefits agency W.P. Dolle, LLC; financial terms were not disclosed. The W.P. Dolle team will relocate to Gallagher’s nearby Cincinnati office as Gallagher expands its Great Lakes region retail P&C and employee benefits capabilities and presence in the greater Cincinnati tristate market.

Arthur J. Gallagher & Co. Acquires Coverys Insurance Services (retail agency assets)

November 16, 2023

Insurance

Arthur J. Gallagher & Co. acquired certain assets of the retail agency business of Coverys Insurance Services, an East Lansing, Michigan-based insurance broker specializing in medical malpractice and professional liability. Terms were not disclosed and the Coverys Insurance Services team will remain in East Lansing under the direction of Ryan Isaacs as part of Gallagher's Midwest retail P/C brokerage operations.

Arthur J. Gallagher & Co. Acquires Rosenzweig Insurance Agency, Inc.

October 23, 2023

Insurance

Arthur J. Gallagher & Co. acquired Mineola, New York-based Rosenzweig Insurance Agency, Inc.; terms were not disclosed. Rosenzweig will operate as part of Gallagher Agency Alliance and will remain in its current location, enhancing Gallagher's small-business property/casualty and employee benefits capabilities.

Arthur J. Gallagher & Co. Acquires B&W Insurance Agency

February 19, 2026

Insurance

Arthur J. Gallagher & Co. has acquired B&W Insurance Agency, Inc., a Washington, Pennsylvania-based personal and commercial insurance brokerage. Terms were not disclosed; the B&W team, including Paul Barzd III and Jim Cote, will remain in Washington and report into Gallagher Select as part of Gallagher's strategy to expand its retail brokerage footprint in southwest Pennsylvania.

Arthur J. Gallagher & Co. Acquires DMc Insurance Partners

December 18, 2024

Insurance

Arthur J. Gallagher & Co. (Gallagher) has acquired Austin, Texas-based Howe Insurance Group LLC, doing business as DMc Insurance Partners. Terms were not disclosed; John McNulty, Scott Durkin and their team will remain in Austin and will report into Gallagher’s U.S. retail personal lines leadership to expand the firm’s personal lines and small business capabilities in the Austin market.