2021 Owens Corning Sustainability Report | Appendices | 287 ABOUT THE REPORT Owens Corning’s mission is to build a sustainable future through material innovation, and our annual Sustainability Report is one way we demonstrate our commitment to that mission. Through this report, our many stakeholders can gain a full understanding of our holistic approach to sustainability, encompassing environmental efforts, the development of sustainable products and processes, and initiatives aimed at increasing social equity within our company and throughout our communities. This is our 16th annual Sustainability Report, published in March 2022, reflecting the reporting period from January 1, 2021, to December 31, 2021. Our previous report was published in April 2021. This is our fifth report prepared in accordance with the Global Reporting Initiative (GRI) Standards: Comprehensive option. This is the more extensive option for GRI reporting, requiring additional disclosures related to our strategy, ethics and integrity, and governance. We report at this level because we believe that transparency is an essential component of any sustainability effort. In addition, this report addresses disclosures and material issues related to CDP (formerly the Carbon Disclosure Project), the Dow Jones Sustainability Index (DJSI), the United Nations Sustainable Development Goals (SDGs), United Nations Communication on Progress, and other stakeholders’ requests, including the Sustainability Accounting Standards Board (SASB) and the Task Force on Climate-related Financial Disclosures (TCFD). This approach enables us to provide an integrated, comprehensive view of our commitments, progress, and activities related to sustainability and social responsibility. We focus on creating robust business and reporting strategies that effectively align with the needs and priorities of our company and our stakeholders. We do this by investing substantial time and effort into understanding, prioritizing, and addressing material topics — and reporting on them accurately and transparently. To achieve this, we have developed our materiality matrix to address different stakeholder needs as well as our involvement with the impacts of material topics. To remain informed about changing business contexts, stakeholder requirements, and emerging trends, we regularly review our list of material topics and their relative priority, and we update them when appropriate. A discussion of our ongoing stakeholder engagement can be found in the Stakeholder Management & Material Issues section of this report. Photo submitted by: Susan Burkett | Toledo, Ohio, U.S. Anna Maria Island, Florida, U.S.