# EDGAR Filing Document

**Accession Number:** 0001235976
**File Stem:** 0001104659-26-052830
**Filing Date:** 2026-4
**Character Count:** 20694
**Document Hash:** e1a04035c167498932b232ad70bea993
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-052830.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001104659-26-052830

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WATTS WATER TECHNOLOGIES INC
- **CENTRAL INDEX KEY:** 0000795403
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS FABRICATED METAL PRODUCTS [3490]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 042916536
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-38025
- **FILM NUMBER:** 26924599

**BUSINESS ADDRESS:**
- **STREET 1:** 815 CHESTNUT ST
- **CITY:** NORTH ANDOVER
- **STATE:** MA
- **ZIP:** 01845
- **BUSINESS PHONE:** 9786881811

**MAIL ADDRESS:**
- **STREET 1:** 815 CHESTNUT STREET
- **CITY:** NORTH ANDOVER
- **STATE:** MA
- **ZIP:** 01845

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WATTS INDUSTRIES INC
- **DATE OF NAME CHANGE:** 19920703
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** HORNE TIMOTHY P
- **CENTRAL INDEX KEY:** 0001235976

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**MAIL ADDRESS:**
- **STREET 1:** WATTS INDUSTRIES INC
- **STREET 2:** ROUTE 815 CHESTNUT ST
- **CITY:** NORTH ANDOVER
- **STATE:** MA
- **ZIP:** 01845

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 43)**

**Issuer:** WATTS WATER TECHNOLOGIES, INC.

**Title of Class of Securities:** Class A Common Stock, par value $.10 per share

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 03/31/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Timothy P. Horne | Names of Reporting Persons<br>Timothy P. Horne |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>5903790.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>942100.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>4961690.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>5903790.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>5903790.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>17.7% | Percent of Class Represented by Amount in Row (9)<br>17.7% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

| 1. | Names of Reporting Persons<br>Daniel W. Horne | Names of Reporting Persons<br>Daniel W. Horne |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1666970.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1666970.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1666970.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.7% | Percent of Class Represented by Amount in Row (9)<br>5.7% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

| 1. | Names of Reporting Persons<br>Deborah Horne | Names of Reporting Persons<br>Deborah Horne |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1666970.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1666970.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1666970.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.7% | Percent of Class Represented by Amount in Row (9)<br>5.7% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

| 1. | Names of Reporting Persons<br>Peter W. Horne | Names of Reporting Persons<br>Peter W. Horne |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>34760.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>34760.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1495010.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1529770.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1529770.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.3% | Percent of Class Represented by Amount in Row (9)<br>5.3% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

| 1. | Names of Reporting Persons<br>Walter J. Flowers | Names of Reporting Persons<br>Walter J. Flowers |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1799710.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1799710.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1799710.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>6.1% | Percent of Class Represented by Amount in Row (9)<br>6.1% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

**Item 1(a). Name of Issuer:**
WATTS WATER TECHNOLOGIES, INC.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
815 Chestnut Street North Andover, MA, 01845

**Item 2(a). Name of Person Filing:**
Timothy P. Horne
Daniel W. Horne
Deborah Horne
Peter W. Horne
Walter J. Flowers

**Item 2(b). Address of Principal Business Office:**
c/o Watts Water Technologies, Inc.
815 Chestnut Street
North Andover, MA 01845

**Item 2(c). Citizenship:**
United States

**Item 2(d). Title of Class of Securities:**
Class A Common Stock, par value $.10 per share

**Item 2(e). CUSIP Number:**
—

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

Timothy P. Horne is deemed the beneficial owner of 5,903,790 shares of Class A Common Stock of the Issuer.  As noted below, substantially all of Timothy P. Horne's beneficial ownership of Class A Common Stock is derived from beneficial ownership of Class B Common Stock, par value $.10 per share, of the Issuer, which is convertible into Class A Common Stock on a share for share basis.
Includes (i) 7,500 shares of Class A Common Stock held by a revocable trust for the benefit of Timothy P. Horne, for which Timothy P. Horne serves as sole trustee, (ii) 920,000 shares of Class B Common Stock held by a revocable trust for the benefit of Timothy P. Horne, for which Timothy P. Horne serves as sole trustee, (iii) 1,666,970 shares of Class B Common Stock held by a revocable trust for the benefit of Daniel W. Horne, Timothy P. Horne's brother, for which Daniel W. Horne and Walter J. Flowers, a partner in the law firm of Flowers and Manning, LLP, serve as co-trustees, (iv) 1,666,970 shares of Class B Common Stock held by a revocable trust for the benefit of Deborah Horne, Timothy P. Horne's sister, for which Timothy P. Horne serves as sole trustee, which trust is revocable with the consent of the trustee, (v) 1,495,010 shares of Class B Common Stock held by a revocable trust for the benefit of Peter W. Horne, Timothy P. Horne's brother, for which Peter W. Horne serves as sole trustee, (vi) 14,600 shares of Class B Common Stock held for the benefit of Tiffany Horne Noonan, Timothy P. Horne's daughter, under an irrevocable trust for which Timothy P. Horne serves as trustee, (vii) 113,924 shares of Class B Common Stock held by a revocable trust for the benefit of Tiffany Horne Noonan, for which Walter J. Flowers serves as trustee, (viii) 6,447 shares of Class B Common Stock held by a trust for the benefit of Kiera R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees, (ix) 6,447 shares of Class B Common Stock held by a trust for the benefit of Tessa R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees, and (x) 5,922 shares of Class B Common Stock held by a trust for the benefit of Liv R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees.  The shares of Class B Common Stock (5,896,290 shares of Class B Common Stock in the aggregate) are subject to The Amended and Restated George B. Horne Voting Trust Agreement   1997 ("1997 Voting Trust") for which Timothy P. Horne serves as trustee.  (See Exhibit 2 for a description of the 1997 Voting Trust).
Daniel W. Horne is deemed the beneficial owner of 1,666,970 shares of Class A Common Stock of the Issuer.  As noted below, all of Daniel W. Horne's beneficial ownership of Class A Common Stock is derived from beneficial ownership of Class B Common Stock, par value $.10 per share, of the Issuer which is convertible into Class A Common Stock on a share for share basis.
Daniel W. Horne's beneficial ownership consists of 1,666,970 shares of Class B Common Stock held in a revocable trust for which Daniel W. Horne and Walter J. Flowers serve as co-trustees, all of which are subject to the 1997 Voting Trust for which Timothy P. Horne serves as sole trustee.  (See Exhibit 2 for a description of the 1997 Voting Trust).
Deborah Horne is deemed the beneficial owner of 1,666,970 shares of Class A Common Stock of the Issuer.  As noted below, all of Deborah Horne's beneficial ownership of Class A Common Stock is derived from beneficial ownership of Class B Common Stock, par value $.10 per share, of the Issuer, which is convertible into Class A Common Stock on a share for share basis.
Deborah Horne's beneficial ownership consists of 1,666,970 shares of Class B Common Stock held in a revocable trust for which Timothy P. Horne serves as the sole trustee, all of which are subject to the 1997 Voting Trust for which Timothy P. Horne serves as sole trustee.  (See Exhibit 2 for a description of the 1997 Voting Trust).
Peter W. Horne is deemed the beneficial owner of 1,529,770 shares of Class A Common Stock of the Issuer.  As noted below, substantially all of Peter W. Horne's beneficial ownership of Class A Common Stock is derived from beneficial ownership of Class B Common Stock, par value $.10 per share, of the Issuer which is convertible into Class A Common Stock on a share for share basis
Peter W. Horne's beneficial ownership consists of (i) 1,515,010 shares of Class B Common Stock held in a revocable trust for which Peter W. Horne serves as the sole trustee, and (ii) 14,760 shares of Class A Common Stock. 1,495,010 shares of Class B Common Stock described in clause (i) above are subject to the 1997 Voting Trust for which Timothy P. Horne serves as trustee.  (See Exhibit 2 for a description of the 1997 Voting Trust).
Walter J. Flowers is deemed the beneficial owner of 1,799,710 shares of Class A Common Stock of the Issuer.  As noted below, all of Mr. Flowers' beneficial ownership of Class A Common Stock is derived from beneficial ownership of Class B Common Stock, par value $.10 per share, of the Issuer which is convertible into Class A Common Stock on a share for share basis.
Mr. Flowers' beneficial ownership consists of (i) 1,666,970 shares of Class B Common Stock held in a revocable trust for the benefit of Daniel W. Horne for which Daniel W. Horne and Mr. Flowers serve as co-trustees, (ii) 113,924 shares of Class B Common Stock held in a revocable trust for the benefit of Tiffany Horne Noonan for which Mr. Flowers serves as the sole trustee, (iii) 6,447 shares of Class B Common Stock held by a trust for the benefit of Kiera R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees, (iv) 6,447 shares of Class B Common Stock held by a trust for the benefit of Tessa R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees, and (v) 5,922 shares of Class B Common Stock held by a trust for the benefit of Liv R. Noonan, for which Joseph T. Noonan and Walter J. Flowers serve as co-trustees. All of the shares of Class B Common Stock (1,799,710 in the aggregate) are subject to the 1997 Voting Trust for which Timothy P. Horne serves as sole trustee.  (See Exhibit 2 for a description of the 1997 Voting Trust).   Mr. Flowers disclaims beneficial ownership of all such shares.

**(b) Percent of class:**

Timothy P. Horne
17.7% equity percentage
68.1% voting percentage
Daniel W. Horne
5.7% equity percentage
0.0% voting percentage
Deborah Horne
5.7% equity percentage
0.0% voting percentage
Peter W. Horne
5.3% equity percentage
0.2% voting percentage
Walter J. Flowers
6.1% equity percentage
0.0% voting percentage

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

Timothy P. Horne 5,903,790
Daniel W. Horne 0
Deborah Horne 0
Peter W. Horne 34,760
Walter J. Flowers 0

**(ii) Shared power to vote or to direct the vote:**

Timothy P. Horne 0
Daniel W. Horne 0
Deborah Horne 0
Peter W. Horne 0
Walter J. Flowers 0

**(iii) Sole power to dispose or to direct the disposition of:**

Timothy P. Horne 942,100
Daniel W. Horne 0
Deborah Horne 0
Peter W. Horne 34,760
Walter J. Flowers 0

**(iv) Shared power to dispose or to direct the disposition of:**

Timothy P. Horne 4,961,690
Daniel W. Horne 1,666,970
Deborah Horne 1,666,970
Peter W. Horne 1,495,010
Walter J. Flowers 1,799,710

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

A group has filed this Schedule 13G pursuant to Rule 13d-1(d). The members of the group are:

Timothy P. Horne
Daniel W. Horne
Deborah Horne
Peter W. Horne
Walter J. Flowers

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Timothy P. Horne**

**Date:** 04/30/2026

**By:** /s/ Timothy P. Horne

**Name & Title:** Timothy P. Horne

**Daniel W. Horne**

**Date:** 04/30/2026

**By:** /s/ Timothy P. Horne*

**Name & Title:** Daniel W. Horne

**Deborah Horne**

**Date:** 04/30/2026

**By:** /s/ Timothy P. Horne*

**Name & Title:** Deborah Horne

**Peter W. Horne**

**Date:** 04/30/2026

**By:** /s/ Timothy P. Horne*

**Name & Title:** Peter W. Horne

**Walter J. Flowers**

**Date:** 04/30/2026

**By:** /s/ Walter J. Flowers

**Name & Title:** Walter J. Flowers