Letter from Our President and CEO

To Our Stakeholders,

As one of the largest diversified midstream energy service providers, ONEOK has a long history of creating value for our stakeholders by providing solutions for a transforming energy future. As we’ve grown our business, we’ve also strengthened our commitment to continuously improve our companywide sustainability program, practices and performance.

Throughout our 16th annual sustainability report, you’ll find information on our safety, environmental and governance-related programs and performance that help us deliver energy the world needs today, while innovating for tomorrow. Organizations such as MSCI, Morningstar Sustainalytics, FTSE Russell, S&P Global and others have consistently recognized our performance in the top of our industry. We have much to be proud of, but more valuable work is ahead. Following our acquisition of Magellan Midstream Partners in September 2023, our workforce is now nearly 5,000 strong and our operations span more than 20 states.

Since closing the acquisition we’ve undertaken efforts to review programs across our combined company, including working to develop a unified companywide safety management system and continued improvement of safety campaigns and training across the organization – Becoming ONE. ONEOK is committed to processes that result in the greatest likelihood of a zero-incident culture.

We’re engaged in the energy transformation and are actively working toward our commitment to lower emissions. We’ve made considerable progress toward our 2030 greenhouse gas emissions target, achieving reductions that equate to approximately 50% of our total target. We’ve also reduced our Scope 1 methane emissions by 36% from a 2019 baseline year, and we continue efforts to identify, measure and reduce methane emissions across our operations.

Through innovative thinking, our employees are working to identify potential low-carbon or emission-reducing projects, investment opportunities and research initiatives. Examples include the continued use of emission-detection satellite technology, low-carbon fuel investments such as sustainable aviation fuel, and participation in hydrogen- and CCUS-related studies.

At ONEOK we’re proud to deliver energy products and services that improve quality of life and support the growing global demand for energy – delivering what’s important to fuel a better tomorrow.

Thank you for your interest in our efforts and support of our company.

Sincerely,

Pierce H. Norton II

President and Chief Executive Officer