Form 4 Filing for Knight Lester B - Aon plc

This filing details a transaction by Knight Lester B, a director at Aon plc, on June 25, 2026. Knight Lester B acquired 1,488 Class A Ordinary Shares. Following this transaction, the total number of shares owned by Knight Lester B, directly or indirectly, is as follows: 124,604 shares owned by his wife, 143,000 shares owned by his family partnership, and 26,033 shares held in a personal revocable trust. The acquisition of these shares was part of an annual grant to non-employee directors, with a nominal value of US $0.01 per share, in accordance with Irish law. The filing was signed on June 29, 2026, by Colby Alexis under power of attorney for Lester Knight.