Form 4 Filing for Patrick Tomlinson

Patrick Tomlinson, President and CEO of Mercer, acquired 14,907 Restricted Stock Units (RSUs) of Marsh & McLennan Companies, Inc. on May 1, 2026. The RSUs were acquired at a price of $0.0 per share, with a conversion rate of 1-for-1 to common stock. These RSUs vest in three equal annual installments on May 15, 2027, 2028, and 2029. Following this transaction, Tomlinson holds 19,761 shares of common stock.