Williams Leads Industry Across Major Sustainability Rankings

TULSA, Okla.–(BUSINESS WIRE)–Williams (NYSE: WMB) earned top marks across several leading sustainability ratings – including S&P Global Corporate Sustainability Assessment (CSA), CDP and ISS – reflecting the company’s ongoing commitment to transparent reporting and strong performance across environmental, social and governance (ESG) criteria.

“As demand for clean, affordable and reliable energy accelerates, Williams’ natural gas infrastructure is uniquely positioned to tackle the toughest energy challenges,” said Chad Zamarin, president and CEO of Williams. “These recognitions reflect our team’s focus on operating responsibly and earning stakeholder trust – the foundation for permitting, for investment and for reliably meeting the critical energy needs for growing American industry.”

Williams’ sustainability rankings are as follows:*

• S&P Global: Received the top score in the 2025 Corporate Sustainability Assessment (CSA) in the North America Oil & Gas Storage & Transportation industry
• CDP: Maintained an ‘A-’ score on the 2025 CDP Climate Change Questionnaire
• ISS: Achieved ‘Prime’ status and ‘B-’ rating in the ISS 2025 Corporate Rating Report
• MSCI: Maintained AA rating, illustrating ongoing ESG leadership in the Oil & Gas Refining, Marketing, Transportation & Storage industry

To read the company’s latest Sustainability Report, visit https://www.williams.com/sustainability/. The company will publish its next Sustainability Report in mid‑2026.

*All ESG ratings and rankings verified as of February 3, 2026.

About Williams

Williams (NYSE: WMB) is a trusted energy industry leader committed to safely, reliably, and responsibly meeting growing energy demand. We use our infrastructure to deliver one third of the nation’s natural gas to where it’s needed most, supplying the energy used to heat our homes, cook our food and generate low-carbon electricity. For over a century, we’ve been driven by a passion for doing things the right way. Today, our team of problem solvers is leading the charge into the clean energy future. Learn more at www.williams.com.

Portions of this document may constitute “forward-looking statements” as defined by federal law. Although Williams believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Any such statements are made in reliance on the “safe harbor” protections provided under the Private Securities Reform Act of 1995. Additional information about issues that could lead to material changes in performance is contained in Williams’ annual and quarterly reports filed with the SEC.

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Caroline Sardella
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