Arthur J. Gallagher & Co.’s insurance brokerage organic revenue growth in 2026 will likely be close to the 6% it achieved in 2025, the company’s top executive said Thursday. Gallagher reported $3.59 billion in revenue for the fourth quarter, a 33.9% increase over the same period in 2024. By line of business, organic revenue increased 5% for U.S. retail, 7% for U.S. wholesale and specialty, 8% for reinsurance and 1% for benefits. “As we sit here today, we continue to see brokerage segment full-year 2026 organic growth of around 5.5%,” Mr. Gallagher said. For the full year 2025, Gallagher reported revenue of $13.8 billion, a 20.8% increase and up 6% on an organic basis.