About This Report This report illustrates how we bring our mission to life through our business; it covers our corporate citizenship activities and performance for calendar year 2017. We have focused our reporting on issues we determined to be of greatest impor- tance through a materiality assessment completed in 2017. This report has been prepared in accordance with the Global Reporting Initiative (GRI) Standards: Core option. In addition, we used the United Nations (UN) Global Compact and the UN Guiding Principles on Business and Human Rights frameworks to guide our reporting. (See related indexes) . Building on our 2016 reporting approach, this year we continue to embed the Sustainable Development Goals (SDGs) into relevant sections of the report. Our SDG-related reporting is further supplemented by a summary report, Banking on 2030: Citi and the Sustainable Development Goals, released in 2017. In this report, for the first time, we have included an index showing where report content is specifically aligned to the recommendations of the G20 Financial Stability Board’s Task Force on Climate-related Financial Disclosures (TCFD). Finally, this report supplements information published in our 2017 Annual Report. All reporting and performance data are limited to information for the owned and operated facilities of Citigroup Inc. and its subsid- iaries, unless stated otherwise. Additional information about Citi can be found on our website. For more information on Citi’s citizenship initiatives, please visit citi.com/citizenship or contact: GLOBAL PUBLIC AFFAIRS CITIGROUP INC. 388 GREENWICH STREET NEW YORK, NY 10013 firstname.lastname@example.org A firm of our size and scale achieves great and big things when we put our mind to it — but my colleagues also positively impact the lives of many in small but meaningful ways each day. The ways we help make our communities stronger, provide opportunities to those who need support, protect our environment and celebrate diversity are the truest reflection of our values and the progress we enable around the world. Michael L. Corbat , Chief Executive Officer, Citigroup Inc.