Northwest Natural Q1 2026 net income up $97.5M on Oregon rates; environmental liability jumps 10.9%

Filed May 6, 2026 · Period ending March 31, 2026 · Compared to 10-Q May 6, 2025 · ~1 min read

Key Changes

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  Environmental liability surged $215M year-over-year to $368M at March 31, 2026, a 141% increase with no explanation provided in MD&A for the escalation in estimated remediation costs.

  MD&A: Environmental Liability verify on EDGAR →
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  Q1 2026 consolidated net income rose $9.6M ($0.15/share) driven by October 2025 Oregon rate case ($20.7M revenue increase approved, 9.5% ROE) and SiEnergy organic growth including June 2025 Pines acquisition.

  MD&A: Consolidated Results verify on EDGAR →
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  Washington multi-year rate case settlement filed March 2026 provides $20.1M Year 1 revenue increase (versus $25.6M requested), with new rates expected August 1, 2026; WUTC approval pending.

  MD&A: Washington Rate Case verify on EDGAR →