Halliburton 2021 Annual & Sustainability Report Appendix 79 GRI Standards Content Index Disclosure Report Location or World Economic Forum Disclosure Report Location or World Economic Forum External Document Stakeholder Capitalism External Document Stakeholder Capitalism Reference Pillar and Core Metrics Reference Pillar and Core Metrics 102-20 Executive-level Universal Standards responsibility Corporate Governance, for economic, page 16 environmental, and General Disclosures social topics 102-1 Name of the 2021 Form 10-K, 102-21 Consulting organization Cover Page stakeholders Corporate Governance, Governance: Material on economic, page 16 issues impacting environmental, stakeholders 2021 Form 10-K, page 1; and social topics 102-2 Activities, brands, Company at a Glance, page 4; products, and services Financial Highlights, page 5 102-22 Composition of 2022 Proxy Statement, Governance: the highest governance Corporate Governance, Governance body and its page 16 body composition committees 102-3 Location 2021 Form 10-K, Cover Page; of headquarters About the Report, page 87 102-23 Chair of the 2022 Proxy Statement, highest governance Corporate Governance, 102-4 Location 2021 Form 10-K, page 18; body page 16 of operations Company at a Glance, page 4; Financial Highlights, page 5 102-24 Nominating and 2022 Proxy Statement, selecting the highest Corporate Governance, 102-5 Ownership governance body page 16 and legal form 2021 Form 10-K, page 1 102-25 Conflicts of Corporate Governance, 2021 Form 10-K, page 4; interest page 16 102-6 Markets served Company at a Glance, page 4; Financial Highlights, page 5 102-26 Role of highest governance body in Corporate Governance, Governance: Setting 102-7 Scale of the 2021 Form 10-K, page 1, 19; setting purpose, values, page 16 purpose organization Company at a Glance, page 4; and strategy Financial Highlights, page 5 102-27 Collective Corporate Governance, 102-8 Information on knowledge of highest page 16 employees and other Our People, page 56 governance body workers 102-28 Evaluating the 2022 Proxy Statement, 102-9 Description Supply Chain Governance, highest governance Corporate Governance, of the organization’s page 23 body’s performance page 16 supply chain 102-29 Identifying and Materiality-Based Approach, 102-10 Significant 2021 Form 10-K, page 1; managing economic, page 11; changes to the Company at a Glance, page 4; environmental, and Corporate Governance, organization and its Financial Highlights, page 5 social impacts page 16 supply chain 102-30 Effectiveness Corporate Governance, 102-11 Precautionary of risk management page 16 principle or approach Health and Safety, page 51 processes 102-31 Review 102-12 External of economic, Corporate Governance, initiatives Engagement, page 13 environmental, and page 16 social topics 102-13 Membership of Engagement, page 13 102-32 Highest associations governance body’s Corporate Governance, role in sustainability page 16 102-14 Statement from 2021 in Review, reporting senior decision-maker page 7 102-33 Communicating Corporate Governance, critical concerns page 16 2021 Form 10-K, page 10; Enterprise Risk Management, Governance: Integrating 102-34 Nature and For mechanism(s) used to 102-15 Key impacts, page 19; risk and opportunity into total number of critical address and resolve critical risks, and opportunities Climate Change and business process concerns concerns see Corporate Emission Reduction, Governance, page 16 page 27 2022 Proxy Statement, 102-16 Values, Mission, Values & Guiding 102-35 Remuneration Corporate Governance, principles, standards, Principles for Sustainability, policies page 16 and norms of behavior page 10 102-36 Process 2022 Proxy Statement, 102-17 Mechanisms for Ethics and Compliance, Governance: Protected for determining Corporate Governance, advice and concerns page 21 ethics advice and remuneration page 16 about ethics reporting mechanisms 102-37 Stakeholders’ 102-18 Governance 2022 Proxy Statement, involvement in 2022 Proxy Statement structure Corporate Governance, remuneration page 16 2022 Proxy Statement, 102-38 Annual total 2022 Proxy Statement 102-19 Delegating Corporate Governance, compensation ratio authority page 16