WATERS CORP /DE/ (WAT) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-02-25 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WATERS CORP /DE/ (WAT) CIK: 0001000697 --- Reporting Owner --- Name: Carpio Robert L III CIK: 0002027463 Role: Officer (SVP Waters Analytical Sciences) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-02-25 | Code: A (Grant or award) Shares: +997 | Price: $0.00 Shares Owned After: 3,615 | Ownership: D (Direct) Footnotes: [F1] Represents restricted stock units ("RSUs"), which will vest in four equal annual installments, with the first such installment vesting on February 25, 2027, subject to the Reporting Person's continued service with the Issuer on each such vesting date. The RSUs are convertible into shares of the Issuer's common stock on a one-to-one basis upon vesting and settlement. --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-02-25 | Code: A (Grant or award) Shares: +4,884 | Price: $0.00 Exercisable: N/A | Expires: 2036-02-25 Shares Owned After: 4,884 | Ownership: D (Direct) Footnotes: [F2] The shares of common stock underlying this stock option will vest and become exercisable in four equal annual installments, with the first such installment vesting and becoming exercisable on February 25, 2027, subject to the Reporting Person's continued service with the Issuer on each such vesting date. --- Footnotes (Complete Index) --- F1: Represents restricted stock units ("RSUs"), which will vest in four equal annual installments, with the first such installment vesting on February 25, 2027, subject to the Reporting Person's continued service with the Issuer on each such vesting date. The RSUs are convertible into shares of the Issuer's common stock on a one-to-one basis upon vesting and settlement. F2: The shares of common stock underlying this stock option will vest and become exercisable in four equal annual installments, with the first such installment vesting and becoming exercisable on February 25, 2027, subject to the Reporting Person's continued service with the Issuer on each such vesting date. --- Signature --- /s/ /s/ Michael Lynn, attorney-in-fact for Robert L. Carpio III (2026-02-27)