NORTHWEST PIPELINE LLC

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

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

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Contents

Balance Sheets at December 31, 2025 and 2024

Balance Sheet

	December 31,
	2025	2024
(Millions)
ASSETS
Current assets:
Cash and cash equivalents	$—	$—
Trade accounts and other receivables:
Advances to affiliate	954	638
Trade	306	250
Affiliates	7	24
Other	23	12
Inventories	82	81
Regulatory assets	126	74
Other current assets and deferred charges	24	24
Total current assets	1,522	1,103
Property, plant, and equipment – net	14,608	14,103
Regulatory assets	268	320
Deferred charges and other	466	405
Total assets	$16,864	$15,931
LIABILITIES AND MEMBER’S EQUITY
Current liabilities:
Payables:
Trade	$225	$258
Affiliates	62	55
Regulatory liabilities	93	58
Accrued interest	53	76
Reserve for rate refunds (Note 18)	179	—
Accrual for litigation settlement (Note 18)	75	—
Other current liabilities	143	105
Asset retirement obligations	41	22
Long-term debt due within one year	246	35
Total current liabilities	1,117	609
Long-term debt	5,642	5,200
Regulatory liabilities	914	976
Asset retirement obligations	573	593
Deferred income and other	227	248
Contingent liabilities and commitments (Note 18)
Member’s equity:
Member’s capital	5,088	5,088
Retained earnings	3,303	3,217
Total member’s equity	8,391	8,305
Total liabilities and member’s equity	$16,864	$15,931

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.