Message from Our Head of Sustainability

Dear U. S. Steel Stakeholders,

I am pleased to share U. S. Steel’s 2024 Sustainability Report, which outlines key milestones in our ongoing commitment to sustainable growth, responsible operations and the long-term strength of American industry. This report reflects the dedication, innovation and hard work of extraordinary teams across our company.

Guided by a clear vision and strong leadership, U. S. Steel continues to embed sustainability into its core strategy — positioning the company at the forefront of a more resilient and competitive American manufacturing sector.

Sustainability creates value for our business and for all our stakeholders. Our customers increasingly expect low-emission, responsibly produced materials, and sustainability efforts help us meet those expectations while also mitigating long-term risks. From reducing environmental impact to deepening community and stakeholder engagement, employees at every level have played a critical role in advancing this work. Special thanks go to those who lead the way in safety, innovation, operations, corporate support and community initiatives — your efforts are essential to our long-term success and are deeply appreciated.

This report highlights several significant achievements, including the world’s first ResponsibleSteel™ product certification at Big River Steel, the 2024 Sustainable Debt Award from Environmental Finance for a $240 million green bond offering, and a nearly 35% reduction in Scope 2 greenhouse gas emissions intensity at Big River Steel compared to the 2021 baseline.

Strategic partnerships have also been essential to our progress. Collaborations with companies like Origami Solar and General Motors have enabled the delivery of low-emission verdeX® steel products — advancing clean technologies while strengthening domestic supply chains.

Thank you to everyone who helped make these accomplishments possible. Together, we are not only transforming how steel is made — we are helping to rebuild and redefine American industry for the generations to come.

Sincerely,
Erika Chan