X0306 4 2017-06-02 0000820313 AMPHENOL CORP /DE/ APH 0001629752 Booker Martin C/O AMPHENOL INDUSTRIAL PRODUCTS GROUP 40-60 DELAWARE STREET SIDNEY NY 13838 1 VP & Grp General Mgr, AIPG Class A Common Stock 2017-06-02 4 M 0 20400 21.495 A 20400 D Class A Common Stock 2017-06-02 4 S 0 20400 75.4228 D 0 D Class A Common Stock 2017-06-02 4 M 0 25600 26.74 A 25600 D Class A Common Stock 2017-06-02 4 S 0 25600 75.4228 D 0 D Class A Common Stock 600 I Spouse Stock Option 21.50 2017-06-02 4 M 0 20400 0 D 2011-05-27 2020-05-27 Class A Common Stock 20400 0 D Stock Option 26.74 2017-06-02 4 M 0 25600 0 D 2012-05-26 2021-05-26 Class A Common Stock 25600 0 D This transaction was executed in multiple trades at prices ranging from $75.38 to $75.48. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Lance E. D'Amico, POA 2017-06-05