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NORTHWEST PIPELINE LLC

For the period ended Dec 31, 2025. Filed Feb 24, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 24, 2026

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

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

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Contents

Financial Statements and Supplementary Data

Item 8. Financial Statements and Supplementary Data

Page
Williams:
Report of Independent Registered Public Accounting Firm93
Consolidated Statements of Income for the Years Ended December 31, 2025, 2024, and 202395
Consolidated Statements of Comprehensive Income (Loss) for the Years Ended December 31, 2025, 2024, and 202396
Consolidated Balance Sheets at December 31, 2025 and 202497
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2025, 2024, and 202398
Consolidated Statements of Cash Flows for the Years Ended December 31, 2025, 2024, and 202399
Transco:
Report of Independent Registered Public Accounting Firm100
Statements of Net Income for the Years Ended December 31, 2025, 2024, and 2023102
Balance Sheets at December 31, 2025 and 2024103
Statements of Changes in Member’s Equity for the Years Ended December 31, 2025, 2024, and 2023104
Statements of Cash Flows for the Years Ended December 31, 2025, 2024, and 2023105
NWP:
Report of Independent Registered Public Accounting Firm106
Statements of Net Income for the Years Ended December 31, 2025, 2024, and 2023108
Balance Sheets at December 31, 2025 and 2024109
Statements of Changes in Member’s Equity for the Years Ended December 31, 2025, 2024, and 2023110
Statements of Cash Flows for the Years Ended December 31, 2025, 2024, and 2023111
Combined Notes to Financial Statements112
Schedule II — Valuation and Qualifying Accounts191
ContentsView on SEC.gov

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