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ISSUER//CIK 0000110019

NORTHWEST PIPELINE LLC

SIC 4922Natural Gas Transmissionoperating

Exchange

Entity type

operating

Fiscal year end

Dec 31

Headquarters

Research Summary

AI-assisted · Grounded in filings

Updated Nov 24, 2025

NORTHWEST PIPELINE LLC

Northwest Pipeline LLC is a specialized midstream operator whose core services revolve around the transportation and storage of natural gas for industrial and utility customers across its regional network; while the precise SIC code remains unspecified, the company sits squarely in the energy pipeline sector where shared standards and compliance regimes expect operators to balance system reliability with fluctuating supply and demand dynamics. Targeting investor-owned utilities, large industrial users, and gas marketers that rely on predictable capacity, Northwest Pipeline emphasizes infrastructure uptime, safety, and regulatory compliance to meet the demands of an essential commodity. Key material risks stem from federal and state pipeline safety regulations, environmental permitting challenges, and market shifts in natural gas consumption driven by economic conditions or emissions policy, all of which can affect throughput and revenue. Latest filings are not publicly listed at this time, and the company continues to monitor the regulatory environment while providing transportation services; view live SEC filings on Earnings Feed to stay current.