P.5 CONTENTS

5 Introduction

CONTENTS

Introduction

• 01 Integrated Report 2026: Snapshot
• ❶ Our History of Enhancing Corporate Value
• ❷ Accelerating Growth ―Delivering on Medium-Term Management Plan 2026―
• ❸ Digital & AI Strategy (DAIS)
• ❹ Promote Sustainability Management Based on Material Issues
• 05 CONTENTS
• 06 Editorial Policy/Statement of Authenticity
• 07 Message from President and CEO
• 12 Roundtable Discussion among Outside Directors

01. Value Creation Stories for the Future ―Further Pursue No. 1 in Each Field

• 16 Values of the Sumitomo Corporation Group
• 17 Value Creation Model
• 18 Management Capital
• 19 Material Issues
• 21 Material Issues × Management Capital
• 22 Logic Tree
• 23 Medium-Term Management Plan 2026
• 28 Message from CFO
• 30 Special Feature: Digital & AI Strategy (DAIS)
• 37 Message from CDO and CIO

02. Foundations for Accelerating Transformation ―Sustainability, Human Capital, Governance

• 39 Message from CSO and CSDO
• 40 Sustainability Management
• 43 Initiatives for Disclosure
• 45 Message from CAO and CCO
• 46 Human Capital
• 50 Corporate Governance
• 59 Risk Management
• 60 Investment Risk Management
• 62 Information Security

03. Performance & Data

• 64 List of Group Businesses
• 65 Business Groups Steel Group/Automotive Group/Transportation & Construction Systems Group/Diverse Urban Development Group/Communication Services Group/Digital AI Group/Lifestyle Business Group/Mineral Resources Group/Chemical Solutions Group/Energy Transformation Business Group
• 75 Summary of Key Financial Indicators
• 76 Segment Information
• 77 Summary of Non-Financial Indicators
• 78 Company Information
• 79 Global Network
• 80 Dialogue with Stakeholders
• 81 External Recognition

Quick guide

Q1. What are the strengths of the Sumitomo Corporation Group?

• p.16 Values of the Sumitomo Corporation Group
• p.17 Value Creation Model
• p.18 Management Capital
• pp.46–49 Human Capital
• pp.64–74 Business Groups

Q2. What initiatives is the Company undertaking for business portfolio transformation?

• pp.12–14 Roundtable Discussion among Outside Directors
• pp.23–27 Medium-Term Management Plan 2026
• p.39 Message from CSO and CSDO
• pp.60–61 Investment Risk Management

Q3. What are the Companyʼs digital and AI initiatives?

• pp.30–36 Special Feature: Digital & AI Strategy (DAIS)
• p.37 Message from CDO and CIO

Q4. What are the Companyʼs initiatives for sustainability management?

• pp.19–20 Material Issues
• p.39 Message from CSO and CSDO
• pp.40–42 Sustainability Management

Q5. I ʼd like to learn more about Companyʼs governance.

• pp.12–14 Roundtable Discussion among Outside Directors
• pp.50–58 Corporate Governance

Q6. I ʼd like to review Companyʼs quantitative information.

• p.75 Summary of Key Financial Indicators
• p.76 Segment Information
• p.77 Summary of Non-Financial Indicators

Cautionary statement concerning forward-looking statements

This integrated report contains management targets relating to medium-term management plans and a wide range of other forward-looking statements. They are subject to the influence of a range of factors in the Companyʼs circumstances going forward and do not constitute a guarantee of future business performance or a guarantee that the targets and forecasts will be met. Readers are therefore advised to avoid placing undue reliance on the forward-looking statements contained herein and to be aware that the Company recognizes no obligation to update or revise such statements.

Scope of report

• Period covered: April 1, 2025, to March 31, 2026 (Some activities starting on or after April 1, 2026, are included.)
• Organizations covered: Sumitomo Corporation and the Sumitomo Corporation Group

Referenced guidelines

• The International Integrated Reporting Framework (IFRS Foundation)
• ISO 26000 (Guidance on Social Responsibility)
• Guidance for Collaborative Value Creation 2.0 by the Ministry of Economy, Trade and Industry