GRI Content Index We prepared this report in accordance with the GRI Standards: Core option. We also reported on many disclosures beyond the Core reporting op - tion, including disclosures from the Financial Services Sector Supplement. The following index provides readers with references for where they can find information in this report and other public documents addressing GRI disclosures relevant to our business. All disclosures are reported fully. Please visit the GRI website for the full text of the disclosures and other information on the GRI reporting framework. Disclosure Number and Title Report Section or Other Documentation GRI 102: General Disclosures 2016 102-1 Name of the organization Citigroup Inc. 102-2 Activities, brands, products, and services • Citi at a Glance • 2021 10-K pages 4-6, 14, 20, 22, 24, 26 and 28 102-3 Location of headquarters 388 Greenwich St., New York, NY 10013 102-4 Location of operations • Citi at a Glance • Citi Website — Countries and Jurisdictions 102-5 Ownership and legal form • 2021 10-K pages 1 and 4 102-6 Markets served • Citi at a Glance • 2021 10-K pages 4-9, 14, 20, 22, 24, 26 and 28 102-7 Scale of the organization • Citi at a Glance • 2021 10-K pages 4-9 102-8 Information on employees and other workers Citi may engage external service providers who may be responsible for performing noncore business activities or engage nonemployee resources who are employed by an external third party but support Citi processes. These nonemployee resources could be working under Citi supervision or be working under the supervision of an external third party in the third party’s facility. Citi may engage external service providers or nonemployees for a variety of different business purposes, including project-based work for a defined period of time, specialized/niche skill sets that are not readily available or professional and outsourced services. There are no significant variations in employment numbers (such as seasonal variations in employment). • Employment Data • 2021 10-K pages 62-64 102-9 Supply chain • Action for Racial Equity • Responsible Sourcing 102-10 Significant changes to the organization and its supply chain • 2021 Annual Report 102-11 Precautionary Principle or approach As discussed in the respective sections of this report, we evaluate and address risks as part of our Environmental and Social Risk Management (ESRM) efforts. Our ESRM Policy prohibits activities we believe pose risks to us, our clients and our stakeholders. This may include taking precautionary actions. 102-12 External initiatives • Environmental and Social Policy Framework 102-13 Membership of associations • Citi at a Glance • Stakeholder Engagement at Citi • Climate Risk and Net Zero > Climate Risk in Our Maritime Shipping Portfolio • Risk Management > Industry Collaboration • Citi Political Activities Statement Trade Associations • Environmental and Social Policy Framework 102-14 Statement from senior decision-maker • Letter from Our CEO Contents ESGatCiti SustainableFinance SustainableProgress Equitable&ResilientCommunities Talent&DEI RiskManagement&ResponsibleBusiness Appendices ESGS ataC ius niblnG 139