X0306 4 2021-02-09 0001000697 WATERS CORP /DE/ WAT 0001252013 REED JOANN A 34 MAPLE STREET MILFORD MA 01757 1 Common Stock 2021-02-09 2021-02-09 4 M 0 4000 99.22 A 36683 D Common Stock 2021-02-09 2021-02-09 4 S 0 1407 282.30 D 35276 D Common Stock 2021-02-09 2021-02-09 4 M 0 4000 113.88 A 39276 D Common Stock 2021-02-09 2021-02-09 4 S 0 1614 282.51 D 37662 D Common Stock 2021-02-09 2021-02-09 4 M 0 3761 130.35 A 41423 D Common Stock 2021-02-09 2021-02-09 4 S 0 1738 282.36 D 39685 D Stock Option (Right to Buy) 99.22 2021-02-09 2021-02-09 4 M 0 4000 0 D 2015-01-02 2024-01-02 Common Stock 4000 0 D Stock Option (Right to Buy) 113.88 2021-02-09 2021-02-09 4 M 0 4000 0 D 2016-01-02 2025-01-02 Common Stock 4000 0 D Stock Option (Right to Buy) 130.35 2021-02-09 2021-02-09 4 M 0 3761 0 D 2017-01-04 2026-01-04 Common Stock 3761 0 D /s/ Joann A. Reed 2021-02-10