X0306 4 2017-02-13 0001000697 WATERS CORP /DE/ WAT 0001596850 Cassis Eugene G 34 MAPLE STREET MILFORD MA 01757 1 Chief Financial Officer Common Stock 2017-02-13 2017-02-13 4 M 0 3000 79.15 A 31027 D Common Stock 2017-02-13 2017-02-13 4 S 0 3000 150.39 D 28027 D Common Stock 2017-02-13 2017-02-13 4 M 0 3000 87.06 A 31027 D Common Stock 2017-02-13 2017-02-13 4 S 0 3000 150.40 D 28027 D Common Stock 2017-02-13 2017-02-13 4 M 0 15000 98.21 A 43027 D Common Stock 2017-02-13 2017-02-13 4 S 0 15000 149.81 D 28027 D Common Stock 1964.9885 I by ESPP Common Stock 6386 I by Wife Common Stock 2097.289 I by Wife's 401k Common Stock 1083.8066 I by Wife's ESPP Stock Option (Right to Buy) 79.15 2017-02-13 2017-02-13 4 M 0 3000 0 D 2012-12-07 2021-12-07 Common Stock 3000 0 D Stock Option (Right to Buy) 87.06 2017-02-13 2017-02-13 4 M 0 3000 0 D 2013-12-11 2022-12-11 Common Stock 3000 3000 D Stock Option (Right to Buy) 98.21 2017-02-13 2017-02-13 4 M 0 15000 0 D 2014-12-06 2023-12-06 Common Stock 15000 10000 D /s/ Eugene G. Cassis 2017-02-14