Every Form 4 that H2O America (HTO) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow HTO and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full HTO filings page.
H2O AMERICA (ticker HTO) is the issuer for which Atlas Infrastructure Partners (UK) Ltd. and GIP ATLAS Holdings Ltd filed an amended insider report stating they have no beneficial ownership of the company’s common stock. They cite an exemption under Rule 16a-1(a)(1) of the Exchange Act, noting that any shares handled by the adviser are held solely for the benefit of third-party investors and that GIP ATLAS Holdings Ltd does not exercise investment discretion. As a result, these parties state they were not obligated to make a Form 4 filing under Section 16(a), and that transactions previously reported are not matchable under Section 16(b).
H2O AMERICA (HTO) received an amended insider report in which Atlas Infrastructure Partners (UK) Ltd. and GIP ATLAS Holdings Ltd state they are not beneficial owners of HTO common stock under an exemption in Rule 16a-1(a)(1). Any HTO shares held by Atlas are described as being for the benefit of third-party investors, and GIP ATLAS Holdings Ltd is identified as Atlas’s sole owner without investment discretion. The amendment explains that, as a result, these parties were not obligated to file a Form 4 under Section 16(a) and that the previously reported transactions are not matchable under Section 16(b).
H2O AMERICA (HTO) is the issuer referenced in an amended insider ownership report. The amendment states that ATLAS Infrastructure Partners (UK) Ltd. and GIP ATLAS Holdings Ltd do not have, and did not have at any time, beneficial ownership of H2O AMERICA common stock under the Rule 16a-1(a)(1) exemption. Any shares held by the adviser are for third-party investors, and the firms indicate they were not required to file the original Form 4 and that the previously reported transactions are not matchable under Section 16(b) of the Exchange Act.
H2O AMERICA (HTO) is the issuer, and this amended insider report explains that ATLAS Infrastructure Partners (UK) Ltd., a registered investment adviser, and its parent GIP ATLAS Holdings Ltd. state they do not have beneficial ownership of HTO common stock under Rule 16a-1(a)(1)(v).
The adviser explains that any HTO shares it holds are for the benefit of third-party investors, not for itself, and it did not acquire shares to influence control or engage in arrangements covered by Rule 13d-3(b). As a result, the reporting persons indicate they were not required to file a Form 4 under Section 16(a) and that transactions previously reported on that Form 4 are not matchable under Section 16(b).
H2O America officer Megan Mattern, CAO, PAO and Controller, reported a tax-withholding disposition of 1,154 shares of Common Stock on July 30, 2026. These shares were withheld by the issuer at $61.97 per share to satisfy withholding taxes triggered by the vesting of previously granted RSUs. After this event, she holds 3,052 shares of Common Stock and 10,579 RSU-based shares that will vest and become issuable under their terms, reflecting a total equity-based interest of 13,631 shares.
ATLAS Infrastructure Partners (UK) Ltd. and GIP ATLAS Holdings Ltd, each a ten percent owner of H2O AMERICA, reported an open-market purchase of 2,784 shares of common stock on July 7, 2026 at $62.03 per share. Following this transaction, their reported direct holdings total 4,615,265 shares of H2O AMERICA common stock.
H2O America reported an insider open-market purchase of its Common Stock by entities identified as ten percent owners. The filing shows a buy of 2,784 shares at a price of $62.03 per share. After this transaction, the reporting holder’s direct position stands at 4,615,265 shares.
H2O America Chief Executive Officer Andrew F. Walters reported routine equity compensation activity. On July 1, 2026, restricted stock units (RSUs) vested, and 374 shares of Common Stock were withheld and returned to the issuer to satisfy applicable tax withholding at $60.74 per share, rather than sold in the open market. After this tax-related disposition to the company, Walters directly holds 26,461 shares of Common Stock, which the filing explains include 15,235 issued shares and 11,226 shares underlying unvested RSUs that will vest over time in line with their terms. Separately, the filing shows an indirect holding of 100 shares held by his spouse.
H2O America CFO and Treasurer Kelly Ann P reported a routine tax-withholding share disposition related to restricted stock vesting. On July 1, 2026, 88 shares of Common Stock were withheld at $60.74 per share to cover taxes on vested RSUs. Following the transaction, her Form 4 shows 9,976 shares, which a footnote explains as 2,176 shares of Common Stock and 7,800 shares underlying RSUs that will vest and become issuable under their terms.
H2O America ten percent owner ATLAS Infrastructure Partners (UK) Ltd. reported mixed open-market trades in Common Stock. It bought 2,132 shares at about $60.76 per share and sold 1,686 shares at about $60.74 per share, resulting in a small net increase in its direct holdings to 4,610,349 shares.
H2O America Chief Executive Officer Andrew F. Walters reported an insider transaction involving company common stock. Walters made a bona fide gift of 3,508 shares of Common Stock, a transfer with no sale proceeds, and now directly holds 26,835 shares. In addition, 100 shares are held indirectly by his spouse. A footnote explains that his direct position consists of 14,416 shares of Common Stock and 12,419 shares underlying restricted stock units (RSUs) that will vest and become issuable in accordance with their terms.
Johnson A Kristen reported acquisition or exercise transactions in this Form 4 filing.
H2O America Chief Administrative Officer Kristen A. Johnson reported updated equity holdings. She now holds 14,565 shares of Common Stock, consisting of 9,040 shares and 5,525 shares underlying restricted stock units that will vest under their terms. She also received an additional 139 shares subject to deferred stock units granted through dividend equivalent rights on existing awards. The filing shows no open-market purchases or sales.
H2O America had a Form 4/A filed by ten percent owners ATLAS Infrastructure Partners (UK) Ltd. and GIP ATLAS Holdings Ltd showing both buying and selling activity in its common stock. On May 29, 2026, the reporting holder executed an open-market purchase of 31,001 shares of common stock at an average price of $57.624 per share and an open-market sale of 1,435 shares at an average price of $57.5217 per share. These transactions resulted in a net increase of 29,566 shares, bringing the reporting holder’s direct ownership to 4,581,034 shares of H2O America common stock after the trades.
H2O America director Denise L. Kruger received a grant of 1,947 restricted stock units (RSUs). The RSUs were awarded under the company’s Long-Term Incentive Plan at a stated price of $0 per unit.
Each RSU converts into one share of common stock when it vests. The award will vest in full if she continues Board service through the day immediately preceding H2O America’s 2027 annual stockholders meeting, with potential accelerated vesting in certain circumstances. After this grant, Kruger holds 6,923 common-stock-related interests, consisting of 4,976 common shares and 1,947 RSUs.
KLEIN REBECCA A reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Rebecca A. Klein received an equity award rather than buying shares on the market. She was granted 1,947 restricted stock units (RSUs), each convertible into one share of common stock when vested, at no cash cost per share.
The RSUs will vest in full if she continues Board service through the day immediately preceding the 2027 annual stockholders meeting, with potential accelerated vesting under certain conditions. After this grant, she holds 9,208 shares in total, including 7,261 shares of common stock and 1,947 shares underlying RSUs.
Guardino Carl reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Carl Guardino received a grant of 1,947 restricted stock units (RSUs). The award was made at no cash cost to him under the company’s Long-Term Incentive Plan.
The RSUs vest in full if he continues Board service through the day immediately before the 2027 annual stockholders meeting. After this grant, he holds 9,139 shares tied to H2O America, including 7,192 shares of common stock and 1,947 shares underlying RSUs.
H2O America director Heather Hunt received a grant of 1,947 restricted stock units (RSUs) of common stock at no cash cost, as part of the company’s Long-Term Incentive Plan. Each RSU converts into one share when it vests, which will occur in full if she continues Board service through the day immediately preceding the 2027 annual stockholders meeting, subject to certain accelerated vesting conditions.
After this award, Hunt’s reported holdings total 11,238 shares of common stock, including 9,291 currently held shares and 1,947 shares underlying the new RSUs.
H2O America director Mary Ann Hanley reported receiving a grant of 1,947 restricted stock units under the company’s Long-Term Incentive Plan. Each RSU converts into one common share if she continues Board service through the day before the 2027 annual stockholders meeting, with certain acceleration rights.
Following this award, she holds 11,583 shares and RSUs in total, including 9,636 common shares and 1,947 shares underlying these RSUs. She has elected to defer receipt of the RSUs under the Formulaic Equity Award Program for Non-Employee Board Members.
WALLACE CAROL P reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Carol P. Wallace received a grant of 1,947 restricted stock units (RSUs) under the company’s Long-Term Incentive Plan. Each RSU represents one share of common stock that will be delivered when it vests.
The RSUs vest in full if Wallace continues Board service through the day immediately preceding H2O America’s 2027 annual stockholders meeting, subject to certain accelerated vesting conditions. After this award, she holds 9,291 shares of common stock and 1,947 shares underlying RSUs, totaling 11,238 shares associated with her position.
Rowe Nick Orlando reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Nick Orlando Rowe reported an equity award of 1,947 restricted stock units (RSUs). The RSUs were granted at no cash cost under the company’s Long-Term Incentive Plan, as part of his compensation for board service.
Each RSU represents one share of H2O America common stock that will be delivered when the unit vests. The award will vest in full if he continues serving on the board through the day immediately preceding the company’s 2027 annual stockholders meeting, with potential accelerated vesting in certain circumstances. Following this grant, he holds 2,452 shares underlying RSUs in total.
More Daniel B. reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Daniel B. More reported an equity grant of 1,947 restricted stock units (RSUs). These RSUs were granted under the company’s Long-Term Incentive Plan and each unit entitles him to one share of common stock when it vests.
The RSUs will vest in full if he continues Board service through the day immediately preceding H2O America’s 2027 annual stockholders meeting, with potential accelerated vesting in certain circumstances. In addition, 15,138 shares of common stock are held indirectly through the Daniel B. More Revocable Trust.
GIP ATLAS Holdings Ltd, a ten percent owner of H2O AMERICA, made an open-market purchase of 50,385 shares of Common Stock at $59.0636 per share. After this transaction, GIP ATLAS Holdings Ltd directly holds 4,582,469 shares of H2O AMERICA Common Stock.
ATLAS Infrastructure Partners (UK) Ltd., a ten percent owner of H2O AMERICA, reported an open-market purchase of 50,385 shares of common stock at an average price of $59.0636 per share. Following this transaction, ATLAS holds 4,582,469 common shares directly.
H2O America vice president and general counsel Willie D. Jr. Brown reported equity-based transactions in the company’s common stock. He received 1,384 restricted stock units under the Long-Term Incentive Plan, which will vest in three annual installments if he continues serving the company.
Brown also acquired 1,263 shares tied to 2023 performance-based RSUs that vested after meeting return on equity and relative total shareholder return goals for the 2023–2025 period and continued service through December 31, 2025. To cover related tax obligations, 521 shares were withheld at a share price of $53.79. After these awards and tax withholdings, he directly holds 10,005 shares of common stock and 3,549 RSU-based shares that will vest according to their terms.
Mattern Megan reported acquisition or exercise transactions in this Form 4 filing.
H2O America reported that its Chief Accounting Officer, Principal Accounting Officer and Controller, Megan Mattern, received a grant of 2,166 restricted stock units of common stock under the company’s Long-Term Incentive Plan. These RSUs vest in three annual installments over three years from the grant date, and she now holds 14,785 RSUs in total.
H2O America’s Chief Administrative Officer Kristen A. Johnson reported several equity awards and a related tax withholding transaction. She received 1,312 restricted stock units that vest in three annual installments, plus 1,263 performance-based RSUs that vested after meeting ROE and TSR goals, and 145 deferred stock units from dividend equivalents. To cover taxes on the vesting RSUs, 470 shares of common stock were withheld at $53.79 per share.
H2O AMERICA President and COO Bruce A. Hauk reported equity compensation activity involving the company’s common stock. On February 27, 2026, he was granted 2,743 restricted stock units (RSUs) under the Long-Term Incentive Plan, each RSU convertible into one share as it vests in three annual installments.
Performance-based RSUs from a 2023 award also vested after achieving return on equity and relative total shareholder return goals, covering 1,230 ROE-based shares and 273 TSR-based shares. To cover related tax withholding on these vestings, 378 shares of common stock were disposed of at $53.79 per share. After these transactions, Hauk directly owned 16,616 shares of H2O AMERICA common stock.
H2O America reported that its CFO and Treasurer, Kelly Ann P, acquired 1,707 shares of common stock through a restricted stock unit (RSU) grant at no cash cost. These RSUs vest in three equal annual installments over three years. After this grant, she holds 10,064 shares in total, including 1,947 common shares and 8,117 shares underlying RSUs that will vest under their terms.
H2O America director and CEO Andrew F. Walters reported equity compensation activity involving the company’s common stock. He received 5,950 RSUs under the Long-Term Incentive Plan, each convertible into one share of common stock, vesting in three annual installments from the grant date, subject to continued service and potential accelerated vesting in certain circumstances.
He also acquired 1,704 shares tied to 2023 performance-based RSUs, which vested based on return on equity and relative total shareholder return goals measured from January 1, 2023 to December 31, 2025, along with continued service through December 31, 2025. To cover taxes on these vestings, 605 shares were withheld at a price of $53.79 per share as a tax-withholding disposition.
After these transactions, Walters directly held 30,343 shares of common stock, consisting of 16,220 shares and 14,123 RSU-based shares that will vest according to their terms, and there are an additional 100 shares indirectly held and reported as owned by his spouse.
Rowe Nick Orlando reported acquisition or exercise transactions in this Form 4 filing.
H2O America director Nick Orlando Rowe received an equity award of 505 restricted stock units under the company’s 2023 Long-Term Incentive Plan. The grant is recorded at a price of $0.00 per unit, reflecting a stock-based compensation award rather than a cash purchase.
Each restricted stock unit entitles Rowe to one share of H2O America common stock when it vests. The units will vest in full on the one-year anniversary of the grant date, with the potential for accelerated vesting under certain prescribed circumstances. After this grant, Rowe holds 505 shares-based units directly.
H2O America CFO and Treasurer Ann P. Kelly reported a routine equity transaction related to restricted stock unit (RSU) vesting. On January 2, 2026, 200 shares of H2O America common stock were withheld at a price of $49.25 per share to satisfy applicable tax withholding obligations triggered by RSUs vesting under a Restricted Stock Unit Issuance Agreement dated January 2, 2025.
The underlying RSU grant had been disclosed previously, and the actual issuance of shares upon vesting is not treated as a new reportable transaction here. Following this tax withholding event, Kelly beneficially owns 8,357 shares of H2O America common stock, consisting of 1,947 shares of common stock and 6,410 shares of common stock underlying RSUs that will vest and become issuable in accordance with their terms.
H2O America’s Chief Administrative Officer Kristen A. Johnson reported routine equity award activity. On January 2, 2026, 514 shares of common stock were withheld to satisfy taxes tied to restricted stock units (RSUs) that vested under agreements dated January 2, 2024 and January 2, 2025. On January 3, 2026, an additional 160 shares were withheld for taxes on RSUs granted January 3, 2023.
After these tax withholdings, Johnson directly beneficially owned 12,460 shares of common stock. She also held 17,876 shares subject to deferred stock units (DSUs) granted through dividend equivalent rights on DSUs from Connecticut Water Service, Inc., which vest and settle on the same terms as the underlying DSUs.
H2O America President and COO Bruce A. Hauk filed a Form 4 reporting routine share withholding tied to restricted stock unit (RSU) vesting. On January 2, 2026, 873 shares of common stock were withheld at $49.25 per share to cover taxes when RSUs granted in 2022, 2024, and 2025 vested. On January 3, 2026, an additional 152 shares were withheld at $49.86 per share for taxes on RSUs granted in 2023. These were not open‑market sales but tax withholdings. After these transactions, Hauk reports beneficial ownership of 12,748 shares, consisting of 7,978 shares of common stock and 4,770 shares underlying unvested RSUs that will vest over time.