SEC Form 4 reporting owner

ATLAS Infrastructure Partners (UK) Ltd.

ATLAS Infrastructure Partners (UK) Ltd. has filed 4 Form 4 transactions reported between April 10, 2026 and July 7, 2026, as 10% owner of H2O AMERICA.

Name as filed: ATLAS Infrastructure Partners (UK) Ltd.

Open-market buys, 24 mo

$3.3M

3 lines

Open-market sales, 24 mo

$102K

1 lines

Companies

with Form 4 filings

Latest transaction

Jul 7, 2026

transaction date

Roles and reported holdings

HTOH2O AMERICA
Apr 10, 2026 – Jul 7, 2026
10% owner
Held directly4,615,265 sh as of Jul 7, 2026 · Form 4
24 months: $3.3M bought · $102K sold

Transaction history

All 4 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Jul 7, 2026	HTO10% owner	Open-market purchaseCode P · direct	2,784	$62.03	$173K@ $62.03	4,615,265	Form 4
Jul 1, 2026	HTO10% owner	Open-market purchaseCode P · direct	2,132	$60.76	$130K@ $60.76	4,612,481	Form 4
Jul 1, 2026	HTO10% owner	Open-market saleCode S · direct	1,686	$60.73	$102K@ $60.73	4,610,349	Form 4
Apr 10, 2026	HTO	Open-market purchaseCode P · directAlso reported by GIP ATLAS Holdings Ltd	50,385	$59.06	$3.0M@ $59.06	4,582,469	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.