[Form 4] WATERS CORP /DE/ Insider Trading Activity

Rhea-AI Filing Summary

Waters Corp SVP & CFO Amol Chaubal reported equity compensation activity. On February 4, 2026, he acquired 1,884 shares of common stock at $0 following the vesting of previously granted performance-based restricted stock units, increasing his direct holdings to 7,108.393 shares.

On February 5, 2026, 58 shares at $376.89 were withheld by Waters to cover tax obligations tied to earlier restricted stock unit vesting, leaving Chaubal with 7,050.393 directly owned shares. The performance-based units were originally granted on February 8, 2023 and are scheduled to vest in full on March 1, 2026, converting to common stock on a one-to-one basis upon vesting and settlement.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Chaubal Amol

Role SVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	58	$376.89	$22K
Grant/Award	Common Stock	1,884	$0.00	--

Holdings After Transaction: Common Stock — 7,050.393 shares (Direct)

Footnotes (1)

1. Represents performance-based restricted stock units ("PSUs") originally granted on February 8, 2023, subject to pre-determined service and performance-based vesting requirements. The level of achievement of the performance-based vesting requirement for the PSUs was certified 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.

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
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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^*

Chaubal Amol

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/04/2026

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	02/04/2026		A		1,884(1)	A	$0	7,108.393	D
Common Stock	02/05/2026		F		58(2)	D	$376.89	7,050.393	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

Explanation of Responses:

1. Represents performance-based restricted stock units ("PSUs") originally granted on February 8, 2023, subject to pre-determined service and performance-based vesting requirements. The level of achievement of the performance-based vesting requirement for the PSUs was certified 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.

2. 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 Amol Chaubal	02/06/2026
	** 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.
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FAQ

What insider transactions did Waters (WAT) report for CFO Amol Chaubal?

Waters reported that CFO Amol Chaubal acquired 1,884 common shares at $0 from performance-based RSU vesting, then had 58 shares withheld at $376.89 for taxes. After these moves, he directly owned 7,050.393 Waters common shares.

What are the details of the 1,884-share award to the Waters (WAT) CFO?

The 1,884 shares reflect performance-based restricted stock units first granted on February 8, 2023. Waters’ compensation committee certified performance on February 4, 2026. These units convert one-to-one into common stock and will fully vest when the service requirement is met by March 1, 2026.

Why were 58 Waters (WAT) shares withheld in the CFO’s Form 4 filing?

The 58 common shares were withheld by Waters to satisfy tax withholding obligations. This withholding was tied to the vesting and settlement of previously reported restricted stock units, a common method for covering employee tax liabilities on equity awards.

How many Waters (WAT) shares does CFO Amol Chaubal own after these transactions?

After the reported activity, CFO Amol Chaubal directly owns 7,050.393 Waters common shares. His position reflects the net result of receiving 1,884 shares from performance-based RSU vesting and 58 shares withheld by the company for tax obligations.

What triggers vesting of the Waters (WAT) performance-based RSUs reported in this Form 4?

The performance-based RSUs vest based on both performance and service conditions. Performance achievement was certified on February 4, 2026 by the compensation committee. The units are expected to vest in full on March 1, 2026 once the remaining service-based requirement is satisfied.