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NORTHWEST PIPELINE LLC

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

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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

Item 9B. Other Information

Departure of Director

On February 20, 2026, Stacey Doré notified Williams that she has elected not to stand for re-election and will depart Williams’ Board of Directors when her term expires on April 28, 2026. Ms. Doré is a member of the Audit Committee and Governance and Sustainability Committee. Following Ms. Doré’s departure, the size of Williams’ Board of Directors will be reduced to eleven directors.

Rule 10b5-1 Trading Arrangements

During the three months ended December 31, 2025, no director or officer of Williams adopted orterminated a “Rule 10b5-1 trading arrangement,” and no director or officer of Williams adopted orterminated a “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

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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.