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NORTHWEST PIPELINE LLC

For the period ended Jun 30, 2026. Filed Aug 3, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 3, 2026

WMB$67.46+1.5%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Item 1. Legal Proceedings

Environmental

Certain reportable legal proceedings involving governmental authorities under federal, state, and local laws regulating the discharge of materials into the environment are described below. While it is not possible for Williams to predict the final outcome of the proceedings that are still pending, it does not anticipate a material effect on its consolidated financial position if it received an unfavorable outcome in any one or more of such proceedings. Williams’ threshold for disclosing material environmental legal proceedings involving a governmental authority where potential monetary sanctions are involved is $1 million.

Other environmental matters called for by this Item are described under the caption “Environmental Matters” in Note 9 – Contingencies included under Part I, Item 1. Financial Statements of this report, which information is incorporated by reference into this Item.

Other Litigation

The additional information called for by this Item is provided in Note 9 – Contingencies included under Part I, Item 1. Financial Statements of this report, which information is incorporated by reference into this Item.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.