WATTS WATER TECHNOLOGIES INC

(a) Disclosure in lieu of reporting on a Current Report on Form 8-K.

None.

(b) Material changes to the procedures by which security holders may recommend nominees to the board of directors.

None.

(c) Insider trading arrangements and policies.

On September 10, 2025, Elie A. Melhem, the Company’s President, Asia Pacific, Middle East & Africa, adopted a written stock sale plan intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act, as amended (the “Melhem 10b5-1 Plan”) for the sale of shares of the Company’s Class A Common Stock. The Melhem 10b5-1 Plan was entered into during an open trading window in accordance with the Company’s Insider Trading Compliance Policy. The Melhem 10b5-1 Plan provides for the potential sale of up to 2,607 shares of the Company’s Class A Common Stock owned by Mr. Melhem, and of all net vested shares issued to Mr. Melhem upon the vesting of 1,863 deferred stock awards on March 13 and 14, 2026. The Melhem 10b5-1 Plan is effective from March 16, 2026 until July 31, 2026 or earlier, if and when all transactions under the Melhem 10b5-1 Plan are completed.

Except as disclosed above, during the third quarter ended September 28, 2025, no director or officer of the Company adopted or terminated any “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.