Timothy P. Horne - Oct 30, 2025 Form 4 Insider Report for WATTS WATER TECHNOLOGIES INC (WTS)

Role: 10%+ Owner
Signature: /s/ Seth M. Kipp, Attorney-in-Fact
Stock symbol: WTS
Transactions as of: Oct 30, 2025
Transactions value $: $0
Form type: 4
Date filed: 11/3/2025, 06:00 AM
Previous filing: Jun 5, 2025
Next filing: Nov 13, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
HORNE TIMOTHY P	10%+ Owner	815 CHESTNUT STREET, NORTH ANDOVER	/s/ Seth M. Kipp, Attorney-in-Fact	2025-11-02	0001235976

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WTS	Class A Common Stock	Conversion of derivative security	$0	+30K		$0.00	30K	Oct 30, 2025	By Revocable Trust	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WTS	Class B Common Stock	Conversion of derivative security	$0	-30K	-3.16%	$0.00	920K	Oct 30, 2025	Class A Common Stock	30K		By Revocable Trust	F1, F2, F3
holding	WTS	Class B Common Stock						4.98M	Oct 30, 2025	Class A Common Stock	4.98M		By Trust	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis.
F2	The shares are held in a revocable trust of which the Reporting Person is the sole trustee and the sole beneficiary.
F3	All shares of Class B Common Stock were convertible into Class A Common Stock upon issuance and do not have an expiration date.
F4	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.