Our Low-Carbon Pathway

8 ESG LANDSCAPE & 2020 ACHIEVEMENTS Published ESG Report with disclosures in alignment with SASB and including components of TCFD 12 Environmental ■On track to meet or exceed carbon savings goal of 30% by 20351 ■Saved nearly 380,000 metric tons of carbon in 2020, equivalent to taking 82,000 cars off the road Our vision forward is being a provider of carbon neutral energy by 2050 WATER BUSINESS Safety No cast iron or bare steel pipe in natural gas system, making our system one of the most modern and tightest in the nation Performed transmission pipeline inspections at nearly 3x the rate required Installed excess flow valves (EFVs) on 38% of our services lines in 2020. Latest industry average is approx. 23% SAFETY VISION 2050 LOW-CARBON PATHWAY ETHICS & INTEGRITY CO2 H ONMENTAL my CARE FOR OUR COMMUNITIES SOCIAL DIVERSE & ACTIVE BOARD GOVERNAN +++ DIVERSITY, EQUITY & INCLUSION SUPERIOR CUSTOMER EXPERIENCE CONSTRUCTIVE REGULATION Governance Maintained well-qualified, diverse, independent and active Board with appropriate business & risk oversight Board refreshment resulted in 6 out of 11 directions being new in the last five years ■Board of directors includes 40% of members that are BIPOC or female and a female chair 100% of active NW Natural employees participated in ethics and compliance training ■Honored as one of the 2022 World's Most Ethical CompaniesⓇ Customers & Employees Ranked #2 in the West for residential customer service² Nearly $1 million and 5,500 employee volunteer hours donated to nonprofits in our communities Made progress on diversity goals - over 41% of our workforce are BIPOC or women Full report at nwnatural.com/about-us/the-company/sustainability This is an emissions savings goal equivalent to 30% of the carbon emissions from our sales customers' gas use and NW Natural company operations from 2015 2021 J.D. Power Gas Utility Residential Customer Satisfaction Study for Large Utilities NW Natural HOLDINGS™

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