Heather Knight - 31 Dec 2025 Form 4 Insider Report for WATERS CORP /DE/ (WAT)

Role
Director
Signature
/s/ Michael Lynn, attorney-in-fact for Heather Knight
Issuer symbol
WAT
Transactions as of
31 Dec 2025
Net transactions value
$0
Form type
4
Filing time
05 Jan 2026, 17:28:31 UTC
Previous filing
18 Nov 2025
Next filing
27 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Knight Heather Director 34 MAPLE STREET, MILFORD /s/ Michael Lynn, attorney-in-fact for Heather Knight 05 Jan 2026 0001967528

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WAT Common Stock Award $0 +60 +7.9% $0.000000 819 31 Dec 2025 Direct F1
transaction WAT Common Stock Award $0 +307 +37% $0.000000 1,126 02 Jan 2026 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction WAT Stock Option (Right to Buy) Award $0 +828 $0.000000 828 02 Jan 2026 Common Stock 828 $381.96 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents common stock units received in lieu of cash payment of director fees pursuant to the Issuer's 1996 Non-Employee Director Deferred Compensation Plan. Common stock units are convertible into shares of the Issuer's common stock on a one-for-one basis upon distribution, which will occur on January 1, 2027, pursuant to an election previously made by the Reporting Person.
F2 Represents shares of common stock subject to restrictions that lapse with respect to 100% of the shares on January 2, 2027.
F3 All of the shares of common stock underlying this stock option will vest and become exercisable on January 2, 2027.