NORTHWEST PIPELINE LLC

For the period ended Sep 30, 2025. Filed Nov 3, 2025.

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.

Sep 30, 2025 · Filed Nov 3, 2025

WMB$66.45+3.7%Stored close · as of Nov 9, 2026

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Contents

Item 1A. Risk Factors

Part I, Item 1A. Risk Factors in the Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 25, 2025, includes risk factors that could materially affect Williams’, Transco’s, and NWP’s businesses, financial condition, or future results. Those Risk Factors have not materially changed.

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