Arthur J. Gallagher has announced its acquisition of insurance broker AssuredPartners in a $13.45 billion deal, aiming to strengthen its position in the growing middle-market segment. Following similar moves by rivals Aon and Marsh McLennan, which struck deals worth $13 billion and $7.75 billion respectively, Gallagher is poised to expand its presence in the middle-market insurance space. Chairman and CEO J. Patrick Gallagher, Jr. highlighted AssuredPartners’ broad U.S. footprint and middle-market focus as key synergies for the merger. With services tailored to firms generating $10 million to $1 billion in annual revenue, the acquisition underscores Gallagher's commitment to this lucrative segment.

Founded in 2011, AssuredPartners has grown to become one of the largest insurance brokers in the U.S., distributing property and casualty, commercial, employee benefits, and personal insurance. The company reported $2.9 billion in adjusted revenue for the year ending September 30. Gallagher plans to finance the acquisition, set to close in Q1 2025, through a mix of cash, debt, and equity. The deal is projected to deliver double-digit growth to Gallagher’s adjusted profits, reinforcing its strategy to compete aggressively in the middle-market insurance sector.