X0306 4 2021-05-20 0000820313 AMPHENOL CORP /DE/ APH 0001697521 Ehrmanntraut Dieter C/O AMPHENOL AUTOMOTIVE PRODUCTS GROUP AUGUST HAEUSSER STRASSE 10, HEILBRONN GERMANY 74080 1 VP & Grp GM, Automotive Prod Stock Option 66.59 2021-05-20 4 A 0 124000 0 A 2022-05-20 2031-05-20 Class A Common Stock 124000 124000 D Date Exercisable: 20% per year over a five year period commencing on the first anniversary of date of grant. /s/ Lance E. D'Amico, POA 2021-05-24