Director Daniel J. Brennan receives equity grants at Waters (NYSE: WAT)

Rhea-AI Filing Summary

Waters Corporation director Daniel J. Brennan reported equity awards that increase his direct ownership in the company. He received a stock option covering 57 shares of common stock at an exercise price of $0.00 per share, and a grant of 23 shares of restricted common stock, both on February 25, 2026.

The restricted shares remain subject to restrictions until February 9, 2027, when they fully lapse. All 57 option shares will vest and become exercisable on the same February 9, 2027 date. Following these grants, Brennan directly owns 1,355 shares of Waters common stock.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Brennan Daniel J.

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 — 1,355 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.

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^*

Brennan Daniel J.

(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	1,355	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 Daniel Brennan	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 Daniel J. Brennan report for WAT?

Daniel J. Brennan reported receiving a stock option for 57 shares and a grant of 23 restricted common shares. Both awards were granted on February 25, 2026, increasing his direct beneficial ownership in Waters Corporation to 1,355 common shares.

Were the Waters (WAT) insider awards open-market purchases or grants?

The awards to Daniel J. Brennan were grants, not open-market purchases. He received a 57-share stock option and 23 restricted common shares at an exercise price of $0.00, described as a grant or award acquisition rather than a buy transaction.

When do Daniel J. Brennan’s Waters (WAT) equity awards vest?

Both awards are scheduled to fully vest on February 9, 2027. Restrictions on the 23 restricted shares lapse 100% on that date, and all 57 option shares become fully vested and exercisable on February 9, 2027, according to the filing footnotes.

How many Waters (WAT) shares does Daniel J. Brennan own after these grants?

After the February 25, 2026 grants, Daniel J. Brennan directly owns 1,355 shares of Waters common stock. This total reflects his non-derivative holdings following the 23-share restricted stock award reported in the insider transaction disclosure.

What type of derivative security did Daniel J. Brennan receive from Waters (WAT)?

He received a stock option labeled as a “Stock Option (Right to Buy)” covering 57 shares of common stock. The option was granted at an exercise price of $0.00 per share and becomes fully exercisable on February 9, 2027.

Is Daniel J. Brennan’s Waters (WAT) ownership direct or indirect?

The filing classifies Daniel J. Brennan’s ownership as direct. Both the 57-share stock option and the 23-share restricted stock award are reported with direct ownership, with no referenced trusts or related entities in the ownership description.