ATLAS Infrastructure Partners Reports 10.83% Stake in H2O America (HTO)

On April 8, 2026, ATLAS Infrastructure Partners (UK) Ltd. and GIP Atlas Holdings Limited filed a Schedule 13G/A with the SEC, disclosing a significant ownership stake in H2O America (Ticker: HTO). The filing indicates that ATLAS Infrastructure Partners now beneficially owns 4,532,084 shares of common stock, representing 10.83% of the company's outstanding shares. This reflects a substantial increase from a previous ownership level of 0.0%. The reporting persons share voting and dispositive power over the reported shares. GIP Atlas Holdings Limited is identified as the sole owner of ATLAS Infrastructure Partners (UK) Ltd., though it does not exercise independent investment discretion. The filing was triggered by an event on March 4, 2026. The investment is characterized as passive, as the filers certified that the securities were not acquired for the purpose of changing or influencing the control of the issuer. The total value of the holdings is estimated at approximately $266.35 million based on supplementary data.