[Form 4] WATTS WATER TECHNOLOGIES INC Insider Trading Activity

Rhea-AI Filing Summary

Watts Water Technologies (WTS) reported an insider transaction. A director converted 30,000 shares of Class B Common Stock into Class A Common Stock on 10/30/2025 at $0 per share. The Class A shares are held indirectly by a revocable trust.

Following the transaction, the revocable trust still holds 920,000 shares of Class B Common Stock that are convertible into Class A on a 1-for-1 basis. Additional Class B shares totaling 4,976,290 are held in separate trusts under a voting trust for which the reporting person serves as trustee.

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

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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^*

HORNE TIMOTHY P

(Last) (First) (Middle)

815 CHESTNUT STREET

(Street)

NORTH ANDOVER MA 01845

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WATTS WATER TECHNOLOGIES INC [ WTS ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/30/2025

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
Class A Common Stock	10/30/2025		C		30,000	A	$0(1)	30,000	I	By Revocable Trust(2)

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
Class B Common Stock	(1)	10/30/2025		C			30,000	(3)	(3)	Class A Common Stock	30,000	$0.0000	920,000	I	By Revocable Trust(2)
Class B Common Stock	(1)							(3)	(3)	Class A Common Stock	4,976,290		4,976,290	I	By Trust(4)

Explanation of Responses:

1. Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis.

2. The shares are held in a revocable trust of which the Reporting Person is the sole trustee and the sole beneficiary.

3. All shares of Class B Common Stock were convertible into Class A Common Stock upon issuance and do not have an expiration date.

4. Consists of the following shares of Class B Common Stock which are subject to The Amended and Restated George B. Horne Voting Trust Agreement - 1997 for which the Reporting Person serves as trustee: (i) 1,666,970 shares held in a trust for the benefit of Daniel W. Horne, (ii) 1,666,970 shares held in a trust for the benefit of Deborah Horne, (iii) 1,495,010 shares held in a trust for the benefit of Peter W. Horne, (iv) 14,600 shares held in a trust for the benefit of Tiffany Horne Noonan, (v) 113,924 shares held in a trust for the benefit of Tiffany Horne Noonan, (vi) 6,447 shares held in a trust for the benefit of Kiera R. Noonan, (vii) 6,447 shares held in a trust for the benefit of Tessa R. Noonan, and (viii) 5,922 shares held in a trust for the benefit of Liv R. Noonan.

	/s/ Seth M. Kipp, Attorney-in-Fact	11/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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