Equity awards for Waters (NYSE: WAT) director Linda Baddour disclosed

Rhea-AI Filing Summary

Waters Corp director Linda Baddour reported receiving new equity awards. On February 25, 2026, she acquired stock options for 57 shares of common stock at an exercise price of $0.00 per share and 23 shares of common stock granted at no cost.

All 57 option shares and the 23 restricted common shares vest on February 9, 2027. Following these grants, she directly holds 2,899 shares of common stock and 57 stock options in Waters Corp.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider BADDOUR LINDA

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	57	$0.00	--
Grant/Award	Common Stock	23	$0.00	--

Holdings After Transaction: Stock Option (Right to Buy) — 57 shares (Direct); Common Stock — 2,899 shares (Direct)

Footnotes (1)

1. Represents shares of common stock subject to restrictions that lapse with respect to 100% of the shares on February 9, 2027. All of the shares of common stock underlying this stock option will vest and become exercisable on February 9, 2027.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BADDOUR LINDA

(Last) (First) (Middle)

34 MAPLE STREET

(Street)

MILFORD MA 01757

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WATERS CORP /DE/ [ WAT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/25/2026		A		23(1)	A	$0	2,899	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$319.44	02/25/2026		A		57(2)		02/09/2027	02/25/2036	Common Stock	57	$0	57	D

Explanation of Responses:

1. Represents shares of common stock subject to restrictions that lapse with respect to 100% of the shares on February 9, 2027.

2. All of the shares of common stock underlying this stock option will vest and become exercisable on February 9, 2027.

	/s/ Michael Lynn, attorney-in-fact for Linda Baddour	02/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did WAT director Linda Baddour report?

Linda Baddour reported receiving equity awards in Waters Corp. She acquired 57 stock options and 23 shares of common stock on February 25, 2026, as compensation awards, all vesting on February 9, 2027, rather than open‑market purchases or sales.

How many Waters Corp shares does Linda Baddour own after this Form 4?

After these awards, Linda Baddour directly holds 2,899 shares of Waters Corp common stock. She also holds 57 stock options, each representing the right to buy one share, which will become exercisable on February 9, 2027, once vesting is complete.

What stock option grant did Waters Corp give to Linda Baddour?

Waters Corp granted Linda Baddour stock options covering 57 shares of common stock. The options were granted at an exercise price of $0.00 per share and will fully vest and become exercisable on February 9, 2027, according to the reported footnote disclosure.

What are the terms of the common stock award to Linda Baddour at WAT?

Linda Baddour received 23 shares of Waters Corp common stock subject to restrictions. The restrictions lapse with respect to 100% of these shares on February 9, 2027, meaning she gains full rights to the shares on that date, assuming continued satisfaction of award conditions.

Is Linda Baddour buying or selling Waters Corp stock in this filing?

The filing shows acquisition through grants, not market buying or selling. Linda Baddour received a stock option award and a restricted common stock award as compensation, both vesting on February 9, 2027, with no reported open‑market purchases or dispositions.