Environmental Health 62 2021 Sustainability Report A Modern, High-Performing Health System Introduction Our People and Culture Responsible Business Practices Performance Data Measuring our footprint For 22 years, UnitedHealth Group has measured its greenhouse gas footprint, and since 2011 we have set emissions reduction goals. We are further advancing our emissions measurement and we are proud to release our first-ever comprehensive scope 1 and 2 inventory, located in the data tables of this report. Our reported emissions have increased in 2021 due to the following drivers: • Change in boundar y: We reported all our global businesses’ and fleet data within our operational control for the first time. • Change in methodology : Sites that were previously reported as scope 3 moved to scope 1 and 2. • P ortfolio growth: Through business combinations. We are currently assessing our scope 3 footprint, which we intend to complete in 2022. We plan to share our most significant categories of scope 3 data in our 2022 Sustainability Report. In previous years, we disclosed scope 3 categories of waste generated in operations, business travel and employee commuting. Our deeper assessment in 2021 identified our most significant categories as: • Pur chased goods and services • C apital goods • U pstream transportation and distribution • W aste • In vestments The calculation of our scope 3 footprint combined with the updated scope 1 and 2 greenhouse gas (GHG) footprint will give us a comprehensive baseline, allowing us to commit to setting a net-zero science-based target and make meaningful GHG reductions in the years to come.