Waters (WAT) CFO shows routine tax withholding of vested RSU shares

Rhea-AI Filing Summary

Waters Corporation’s SVP & Chief Financial Officer Amol Chaubal reported a routine tax-related share disposition. On the reported date, 239 shares of common stock were withheld by the company to cover tax obligations tied to vesting of previously granted restricted stock units, rather than sold in the market.

After this withholding, Chaubal directly holds about 7,622.8449 common shares. This total includes 65.4519 shares acquired earlier through the Waters Corporation Amended and Restated 2009 Employee Stock Purchase Plan in a transaction described as exempt under Rule 16b-3(c), indicating ongoing equity participation.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chaubal Amol

Role SVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	239	$352.21	$84K

Holdings After Transaction: Common Stock — 7,622.845 shares (Direct, null)

Footnotes (1)

1. 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. Includes 65.4519 shares of common stock acquired on March 31, 2026, pursuant to the Waters Corporation Amended and Restated 2009 Employee Stock Purchase Plan, in a transaction that was exempt pursuant to Rule 16b-3(c).

Key Figures

Tax-withholding shares: 239 shares Price per share for withholding: $352.21 per share Shares held after transaction: 7,622.8449 shares +1 more

4 metrics

Tax-withholding shares 239 shares Shares withheld to satisfy tax obligations on vesting RSUs

Price per share for withholding $352.21 per share Value used for the 239 withheld shares

Shares held after transaction 7,622.8449 shares Direct Waters common stock held by Amol Chaubal post-transaction

ESPP shares included 65.4519 shares Shares acquired via 2009 Employee Stock Purchase Plan, exempt under Rule 16b-3(c)

Key Terms

restricted stock units, tax withholding obligations, Employee Stock Purchase Plan, Rule 16b-3(c)

4 terms

restricted stock units financial

"vesting and settlement of previously reported restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"withheld by the Issuer to satisfy tax withholding obligations"

Employee Stock Purchase Plan financial

"pursuant to the Waters Corporation Amended and Restated 2009 Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Rule 16b-3(c) regulatory

"in a transaction that was exempt pursuant to Rule 16b-3(c)"

An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.

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^*

Chaubal Amol

(Last) (First) (Middle)

34 MAPLE STREET

(Street)

MILFORD MASSACHUSETTS 01757

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2026

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

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

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

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	05/12/2026		F		239(1)	D	$352.21	7,622.8449(2)	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 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.

2. Includes 65.4519 shares of common stock acquired on March 31, 2026, pursuant to the Waters Corporation Amended and Restated 2009 Employee Stock Purchase Plan, in a transaction that was exempt pursuant to Rule 16b-3(c).

	/s/ Michael Lynn, attorney-in-fact for Amol Chaubal	05/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Waters (WAT) CFO Amol Chaubal report in this Form 4?

Amol Chaubal reported 239 Waters shares withheld to satisfy tax obligations on vesting restricted stock units. This was a tax-withholding disposition, not an open-market sale, and reflects standard equity compensation processing rather than an active trading decision.

Was the Waters (WAT) CFO’s Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. The 239 shares were withheld by Waters to cover tax withholding obligations from vesting restricted stock units, a common administrative step in stock-based compensation programs rather than a discretionary sale decision.

How many Waters (WAT) shares does CFO Amol Chaubal hold after the transaction?

Following the tax-withholding disposition, Amol Chaubal directly holds about 7,622.8449 Waters common shares. This figure reflects his position after the 239 shares were withheld to satisfy tax obligations associated with vesting restricted stock units previously reported.

What role did restricted stock units play in this Waters (WAT) Form 4?

The Form 4 notes that the withheld 239 shares covered tax obligations from vesting and settlement of previously reported restricted stock units. This links the disposition directly to equity compensation vesting mechanics, not to any separate stock purchase or sale in the market.

What is the significance of the Waters (WAT) Employee Stock Purchase Plan in the filing?

A footnote explains that Chaubal’s holdings include 65.4519 Waters shares acquired under the Amended and Restated 2009 Employee Stock Purchase Plan. That ESPP acquisition was described as exempt under Rule 16b-3(c), showing additional routine participation in company equity programs.