Pat Gallagher

Pat Gallagher has served as Chairman, President, and CEO of Arthur J. Gallagher & Co. since 1995, making him one of the longest-serving CEOs in the insurance industry. Gallagher, the grandson of the company's founder, has grown AJG from a mid-size regional broker into the world's fourth-largest insurance brokerage through one of the most prolific acquisition strategies in financial services — closing over 600 acquisitions during his tenure. Gallagher's M&A approach is distinctive: rather than pursuing mega-deals, AJG executes numerous smaller tuck-in acquisitions of independent insurance agencies and brokerages, integrating them onto Gallagher's platform and extracting operational synergies. This strategy provides steady, compounding growth with lower integration risk. The company focuses on middle-market clients — the backbone of the economy — rather than competing for the largest multinational accounts against Marsh McLennan and Aon. His key decisions involve acquisition pipeline management, organic revenue growth acceleration, expansion of the Risk Management Services segment, international growth (particularly in the UK, Australia, and New Zealand), and maintaining the family-influenced culture that drives employee retention and client loyalty.