X0508 4 2026-02-04 0001000697 WATERS CORP /DE/ WAT 0001821498 Batra Udit 34 MAPLE STREET MILFORD MA 01757 1 1 President and CEO 0 Common Stock 2026-02-04 4 A 0 7066 0 A 31610 D Common Stock 2026-02-05 4 F 0 218 376.89 D 31392 D Represents performance-based restricted stock units ("PSUs") originally granted on February 8, 2023, subject to predetermined service and performance-based vesting requirements. The leve of achievement of the performance-based vesting requirements for the PSUs was satisfied upon the certification by the Issuer's Compensation Committee on February 4, 2026, and the PSUs will vest in full upon satisfaction of the service-based vesting requirement on March 1, 2026. The PSUs are convertible into shares of the Issuer's Common Stock on a one-to-one basis upon vesting and settlement. Represents shares of common stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. /s/ Michael Lynn, attorney-in-fact for Udit Batra 2026-02-06