Principle 8 Businesses should undertake initiatives to promote greater environmental responsibility. 2020 REPORT SECTION PAGE NUMBER COMMENTS Product Innovation & Stewardship 101-114 Product Innovation & Stewardship 106 Environmental Transparency Circular Economy 86 2030 Goals for The Circular Economy Sustainable Growth 115 Sustainable Growth Initiatives Energy Efficiency & Sourcing Renewable Energy 139 Power Purchase Agreements Combating Climate Change 151 Partnering to Address Climate Change Compliance and Beyond 74 Environmental Compliance Principle 9 Businesses should encourage the development and diffusion of environmentally friendly technologies. 2020 REPORT SECTION PAGE NUMBER COMMENTS Product Innovation & Stewardship 97-98 Products that Make a Material Difference Energy Efficiency & Sourcing Renewable Energy 142 Energy Conservation and Savings Energy Efficiency & Sourcing Renewable Energy 140 Energy Initiatives Sustainable Growth 97-98 Products That Make a Material Difference Combating Climate Change 147-148 Our Approach Principle 10 Businesses should work against corruption in all its forms, including extortion and bribery. 2020 REPORT SECTION PAGE NUMBER COMMENTS Human Rights & Ethics 282-283 Anti-corruption UN GLOBAL COMPACT COMMUNICATION ON PROGRESS INDEX Appendix E United Nations Sustainable Development Goals discussed in our report in the Executive Summary section on pages 41-50 . 2021 Owens Corning Sustainability Report | Appendices | 342

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