Form 4 Filing by D'AMICO LANCE E

Lance E. D'Amico, EVP, Secretary & GenCounsel of AMPHENOL CORP /DE/, reported a transaction on May 22, 2026. D'Amico acquired 83,020 shares of Class A Common Stock through the exercise of a stock option with a par value of 0.0 and a conversion or exercise price of 132.06. The option is exercisable in installments over five years, with 20% becoming available annually starting from the first anniversary of the grant date. Following this transaction, D'Amico directly owns 57,065 shares of Class A Common Stock. Additionally, he indirectly owns 19,335 shares through the Lance E. D'Amico 2025 GRAT #1 and 25,000 shares through the Lance E. D'Amico 2026 GRAT #1. The underlying securities for the exercised option also amount to 83,020 shares of Class A Common Stock.