Halliburton 2021 Annual & Sustainability Report Introduction 11 Materiality-Based Approach We continue to have open, frank dialogue with our stakeholders, including our shareholders, about environmental, social, and governance topics. Feedback from our investors, customers, workforce, and ESG rating organizations, among others, reassured us that we are focused on the right priorities, which is why there are no new changes to our ESG materiality matrix this year. This materiality matrix shows the relative weight of different topics from two perspectives. The X-axis shows how important the industry considers an issue, and the Y-axis shows the topic’s importance to our stakeholders. Our work this past year represented a continuation of the priorities we established in 2020, and we are confident in our progress toward the sustainability commitments of each material topic, as seen in the next table and highlighted throughout this report. Dow Jones Sustainability Index (DJSI) included Halliburton in the S&P Global Sustainability Yearbook 2022, which highlights the top 10% most sustainable companies per industry.