Sustainability management is one of our key management philosophies. The Sustainability Committee, a subordinate organization of the Executive Committee, plays a central role in advancing sustainability management. The Sustainability Committee is responsible for planning, drafting, and proposing basic management policies relating to sustainability, as well as policies and strategies concerning business activities and corporate initiatives. In addition, based on discussions held by the Executive Committee, the Committee regularly reports on the status of discussions and key sustainability matters to the Board of Directors. By incorporating opinions from diverse perspectives, including those of outside directors, into management decision-making, we promote sustainability management under an effective governance framework.

As one of our core priorities, we have identified material issues that we collectively address as Mitsui's Materiality and promote our business activities in alignment with the 17 goals of the United Nations' Sustainable Development Goals (SDGs). Each business unit formulates action plans linked to the Materialities and continuously monitors progress against those plans, thereby contributing to the sustainable development of society. We also periodically review Mitsui's Materiality in response to changes in the external environment. In 2025, through extensive dialogue with a wide range of stakeholders, we identified six Materialities, including a newly added Human Rights Materiality. Understanding of, and awareness regarding, the connection between individual responsibilities and each Materiality have steadily taken root throughout the organization.

In the Medium-term Management Plan 2026, we set forth "Creating Sustainable Futures" as our aspirational vision and designated climate change, natural capital, and business and human rights as the three priority themes of sustainability management. We have steadily advanced concrete initiatives in each area as follows:

1. Climate Change
   To achieve net-zero emissions by 2050, we are expanding our renewable energy and next-generation fuel businesses while continuing to focus on natural gas and LNG businesses that support energy demand during the transition period. In addition, we are advancing initiatives toward the realization of a decarbonized society and optimizing our portfolio.
2. Natural Capital
   In June 2025, we published the inaugural edition of our TNFD (Taskforce on Nature-related Financial Disclosures) Report. We identify, assess, and manage our dependencies and impacts on natural capital while also focusing on initiatives to enhance economic value through businesses that utilize natural capital.
3. Business and Human Rights
   We are promoting company-wide initiatives to respect human rights through measures such as enhancing human rights due diligence and strengthening our internal monitoring mechanisms. In addition, through expanded training programs and deeper dialogue with our business partners, we are working to mitigate human rights risks and raise awareness throughout the supply chain.

In the Medium-term Management Plan 2029 announced in May 2026, we continue to position sustainability management as one of our key priorities and as a management foundation supporting the sustainable enhancement of corporate value. With respect to social issues such as climate change, natural capital, and business and human rights, we are deepening our integrated approach by conducting multifaceted scenario analyses that take into account the interconnections among these issues and by reflecting the results in both our management strategies and business activities from the perspectives of risks and opportunities.

Furthermore, beginning with the fiscal year ending March 31, 2027, disclosures of sustainability information based on the Sustainability Standards Board of Japan (SSBJ) standards will be required in annual securities reports. This will require more advanced and transparent disclosures, including information on Board oversight, scenario analysis, transition plans, and the quantitative assessment of financial impacts. We will further advance our sustainability initiatives while enhancing both the quality and quantity of our disclosures, thereby strengthening the trust of our stakeholders and contributing to the enhancement of corporate value over the medium to long term.

Guided by our DNA of "Challenge and Innovation," we will continue to provide real solutions to global social issues through our business activities and contribute to the realization of a sustainable society.

September 2026

Kazumasa Nakai

Representative Director,
Executive Vice President,
Chief Strategy Officer (CSO),
Chairperson of the Sustainability Committee