As of March 23, 2026, the three largest insider holders of HTO are Eric W Thornburg (President Ceo, 78.42K shares), Maureen P Westbrook (President Of Ctws, 40.59K shares), Andrew F Walters (Chief Executive Officer, 30.34K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Eric W Thornburg | President Ceo | 78,418 | 0 | 04 Mar, 2025 |
| Maureen P Westbrook | President Of Ctws | 40,590 | 0 | 30 Dec, 2022 |
| Andrew F Walters | Chief Executive Officer | 30,343 | 0 | 03 Mar, 2026 |
| Andrew Gere | President Of Sjwc | 25,410 | 0 | 02 Mar, 2023 |
| James Patrick Lynch | Chief Accounting Officer | 25,249 | 0 | 04 Nov, 2022 |
| Bruce A Hauk | President And Coo | 16,616 | 0 | 03 Mar, 2026 |
| Megan Mattern | Cao, Pao And Controller | 14,785 | 0 | 03 Mar, 2026 |
| A Kristen Johnson | Chief Administrative Officer | 14,565 | 0 | 03 Mar, 2026 |
| Willie D. Jr. Brown | Vp Gen Counsel | 13,554 | 0 | 03 Mar, 2026 |
| Tanya Moniz-Witten | President, San Jose Water Co. | 12,812 | 0 | 01 May, 2025 |
| Gregory P Landis | 12,803 | 0 | 15 May, 2025 | |
| Bruce A Hauk | Chief Operating Officer | 11,813 | 0 | 04 Mar, 2025 |
| A Kristen Johnson | Chief Administrative Officer | 11,097 | 0 | 04 Mar, 2025 |
| Ann P Kelly | Cfo And Treasurer | 10,064 | 0 | 03 Mar, 2026 |
| Mary Ann Hanley | 9,636 | 0 | 15 May, 2025 | |
| Hunt Heather | 9,291 | 0 | 15 May, 2025 | |
| Carol P Wallace | 9,291 | 0 | 15 May, 2025 | |
| Ann P Kelly | Chief Accounting Officer Pao | 8,186 | 0 | 06 Jan, 2025 |
| Rebecca A Klein | 7,261 | 0 | 15 May, 2025 | |
| Carl Guardino | 7,192 | 0 | 15 May, 2025 | |
| Hunt Heather | 7,095 | 0 | 24 Jun, 2024 | |
| Debra Man | 6,966 | 0 | 30 Apr, 2021 | |
| Katharine Armstrong | 6,233 | 0 | 30 Apr, 2021 | |
| Wendy Avila-Walker | Vp Of Finance, Controller | 5,806 | 0 | 06 Jan, 2022 |
| Walter J. Bishop | 5,353 | 0 | 29 Apr, 2022 | |
| Craig J Patla | President Of Ctws | 5,200 | 0 | 04 Mar, 2025 |
| Rebecca A Klein | 5,065 | 0 | 24 Jun, 2024 | |
| Denise L Kruger | 4,976 | 0 | 15 May, 2025 | |
| Daniel B. More | 4,008 | 0 | 15 May, 2025 | |
| Mohammed G. Zerhouni | Svp Of Fin., Prin. Acct. Ofcr. | 3,567 | 0 | 05 Feb, 2024 |
| Katharine Armstrong | 0 | 2,700 | 09 Dec, 2021 | |
| Daniel B. More | 1,812 | 0 | 24 Jun, 2024 | |
| Douwe Busschops | Chief Information Officer | 1,768 | 0 | 06 Jan, 2025 |
| Nick Orlando Rowe | 505 | 0 | 03 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Mar, 2026 | Nick Orlando Rowe | Common Stock | A | 505 | $0.00 | 505 | D | A |
| 27 Feb, 2026 | Megan Mattern | Common Stock | A | 2,166 | $0.00 | 14,785 | D | A |
| 27 Feb, 2026 | Andrew F Walters | Common Stock | A | 5,950 | $0.00 | 29,244 | D | A |
| 27 Feb, 2026 | Willie D. Jr. Brown | Common Stock | A | 1,384 | $0.00 | 12,812 | D | A |
| 27 Feb, 2026 | Bruce A Hauk | Common Stock | A | 2,743 | $0.00 | 15,491 | D | A |
| 27 Feb, 2026 | Ann P Kelly | Common Stock | A | 1,707 | $0.00 | 10,064 | D | A |
| 27 Feb, 2026 | A Kristen Johnson | Common Stock | A | 1,312 | $0.00 | 13,772 | D | A |
| 27 Feb, 2026 | Andrew F Walters | Common Stock | A | 1,704 | $0.00 | 30,948 | D | A |
| 27 Feb, 2026 | Willie D. Jr. Brown | Common Stock | A | 1,263 | $0.00 | 14,075 | D | A |
| 27 Feb, 2026 | Bruce A Hauk | Common Stock | A | 1,503 | $0.00 | 16,994 | D | A |
| 27 Feb, 2026 | A Kristen Johnson | Common Stock | A | 1,263 | $0.00 | 15,035 | D | A |
| 27 Feb, 2026 | Andrew F Walters | Common Stock | D | 605 | $53.79 | 30,343 | D | F |
| 27 Feb, 2026 | A Kristen Johnson | Common Stock | D | 470 | $53.79 | 14,565 | D | F |
| 27 Feb, 2026 | Bruce A Hauk | Common Stock | D | 378 | $53.79 | 16,616 | D | F |
| 27 Feb, 2026 | Willie D. Jr. Brown | Common Stock | D | 521 | $53.79 | 13,554 | D | F |
| 02 Mar, 2026 | A Kristen Johnson | Common Stck | A | 145 | - | 18,021 | D | A |
| 02 Jan, 2026 | Ann P Kelly | Common Stock | D | 200 | $49.25 | 8,357 | D | F |
| 02 Jan, 2026 | A Kristen Johnson | Common Stock | D | 514 | $49.25 | 12,620 | D | F |
| 02 Jan, 2026 | Bruce A Hauk | Common Stock | D | 873 | $49.25 | 12,900 | D | F |
| 02 Jan, 2026 | Andrew F Walters | Common Stock | D | 682 | $49.25 | 23,510 | D | F |