The provided text is an excerpt from a Wikipedia article focused entirely on the American insurance brokerage firm Arthur J. Gallagher & Co., often referred to simply as Gallagher. The source offers a comprehensive overview of the company, detailing its status as an S&P 500 component, its substantial financial figures from 2024, and its core business activities in insurance brokerage and risk management services. Additionally, the text extensively outlines the history and geographical expansion of the company, chronicling its founding in 1927 and its numerous strategic acquisitions and rebranding efforts across North America, Europe (including the UK, Norway, and Sweden), Oceania, and South America, while also noting recent events like a 2020 ransomware incident.