Mitsui : Notice of the 106th Ordinary General Meeting of Shareholders

Notice of the 106th Ordinary General Meeting of ShareholdersMITSUI & CO., LTD.

Note: This document has been translated from Japanese original for reference purpose only, without any warranty as to its accuracy or as to the completeness of the information. The Japanese original version is the sole official version.

Dear Shareholders,

Thank you for your ongoing support to Mitsui & Co.

I hereby present the notice of convocation of the 106th Ordinary General Meeting of Shareholders.

In the fiscal year ended March 31, 2025, Mitsui & Co. made key growth investments that are expected to contribute to our income over a long period of time. We made these investments in business areas where we have a competitive edge, based on long-standing relationships with customers and partners. Under our elevated risk management practice, we enhanced our trading capabilities, steadily advanced the reshaping of our portfolio through strategic divestitures, achieved a robust cash flow and were able to provide higher shareholder returns than in the previous fiscal year.

The fiscal year ending on March 31, 2026 is the last year of the current Medium-term Management Plan 2026. This year, we will fulfill our strategic objectives and make preparations towards our future. We will continue to build a strong and resilient foundation for revenue by selectively investing in growth opportunities that leverage our strengths and incorporating these businesses into our portfolio. The Mitsui & Co. group will enhance its competitive strengths through the contributions of our global employees whose wide range of expertise and skills will drive us towards the next stage.

On behalf of Mitsui & Co., I would like to ask for your continued support and encouragement.

May 2025

Kenichi Hori Representative Director, President and Chief Executive Officer

Mitsui & Co., Ltd.

MITSUI & CO., LTD.

2-1, Otemachi 1-chome, Chiyoda-ku, Tokyo

Date of issuance: May 29, 2025

Start date of measures for providing information in electronic format: May 16, 2025 To the shareholders of Mitsui & Co., Ltd.:

Notice of the 106th Ordinary General Meeting of Shareholders

You are hereby notified of the 106th Ordinary General Meeting of Shareholders (the “Meeting”) of Mitsui & Co., Ltd. (the “Company”, “Mitsui” or “we”), to be held as set forth below.

When convening this general meeting of shareholders, the Company takes measures for providing information that constitutes the content of reference documents for the general meeting of shareholders, etc. (items for which measures for providing information in electronic format are to be taken) in electronic format and posts this information as “Notice of the 106th Ordinary General Meeting of Shareholders” on the Company’s website. Please access the Company’s website by using the internet address shown below to review the information.

The Company’s website: https://www.mitsui.com/jp/en/ir/information/general/index.html

In addition to the Company’s website mentioned above, the items for which measures for providing information in electronic format are to be taken are also posted on each of the following websites.

Website title and URL	Method of access
Listed Company Search (TSE) https://www2.jpx.co.jp/tseHpFront/ JJK010010Action.do?Show=Show (in Japanese)	Enter “Mitsui & Co.” in “Issue name (company name)” or the Company’s securities identification code “8031” in “Code”, and click “Search”. Then, click “Basic information” and select “Documents for public inspection/PR information”.
Kabunushi Soukai PortalⓇ(Sumitomo Mitsui Trust Bank, Limited) https://www.soukai-portal.net (in Japanese)	Scan the QR codeⓇon the enclosed voting card or enter your log in ID and password on the website. (For details, please refer to the “Procedure for Exercising Voting Rights via Internet” on page 5).

You may also exercise your voting rights of the General Meeting of Shareholders in advance by using the voting card or via the Internet. The deadline for exercising your voting rights in advance will be 5:30 p.m. (Japan standard time) on Tuesday, June 17, 2025 (For details, please refer to the “Exercise of Voting Rights in Writing or Electronically (via the Internet)” on pages 4-5).

We will livestream the Meeting via the Internet so that our shareholders are able to view the proceedings of the Meeting instead of visiting the venue of the Meeting (For details, please refer to the “Information on Livestream” on pages 6-7). However, viewing the Meeting via the livestream is not recognized as the attendance to the General Meeting of Shareholders under the Companies Act of Japan. Furthermore, shareholders can submit matters of concern via: (1) a questionnaire survey after exercising voting rights via スマート行使® (smart voting); and (2) the livestream webpage. Among the matters received in advance, those of particular concern to shareholders will be answered on the day of the Meeting.

Yours sincerely, Kenichi Hori

Representative Director, President and Chief Executive Officer

Mitsui & Co., Ltd.

1. Date and Time: June 18, 2025 (Wednesday) at 10:00 a.m. (doors open at 9:00 a.m.)
2. Place: 10-4, Toranomon 2-chome, Minato-ku, TokyoThe Okura Tokyo, Heian Room
3. AgendaMATTERS TO BE REPORTED

   1. Reports on the Business Report, Consolidated Financial Statements for the 106th Fiscal Year (from April 1, 2024, to March 31, 2025), and the Results of the Audit thereof by the Independent Auditor and the Audit & Supervisory Board.

   2. Reports on the Non-Consolidated Financial Statements for the 106th Fiscal Year (from April 1, 2024, to March 31, 2025).

      PROPOSED RESOLUTIONS[Company proposals (Item 1 to Item 3)]

      Item 1: Distribution of Surplus

      Item 2: Election of Twelve (12) Directors

      Item 3: Election of One (1) Audit & Supervisory Board Member

      [Shareholder proposals (Item 4 and Item 5)]

      Item 4: Partial amendment to the Articles of Incorporation (Disclosure of financial risk audit by Audit & Supervisory Board)

      Item 5: Partial amendment to the Articles of Incorporation (Disclosure of the financial impact of failing to meet a 1.5 degree Celsius target under the Paris Agreement)

      Please refer to the “Reference Materials for the Exercise of Voting Rights” on pages 9-42 for details of the proposed resolutions and related information.
4. Notes regarding the Exercise of Voting Rights

   1. Where there is no indication of either “approval” or “disapproval” of the respective proposed resolutions on the voting card, it shall be deemed that each of the Items was approved for the company proposals, and disapproved for the shareholder proposals.

   2. Duplication of votes

      1. Where votes have been cast several times via the Internet, the vote cast last will be taken as the validly exercised vote.

      2. Where votes have been cast both via the Internet and by voting card, the vote that arrives at the Company latest (in terms of days) will be taken as the validly exercised vote. Further, in the event that duplicate votes arrive at the Company on the same day, the vote cast via the Internet will be taken as the validly exercised vote.

   * Shareholders attending the Meeting in person are requested to submit the enclosed voting card at the Meeting reception desk. Moreover, the shareholders may exercise their voting rights at the Meeting by appointing one (1) proxy who is also a shareholder of the Company entitled to voting rights at the Meeting. In case of voting by proxy, please have the proxy present the voting card along with written proof of their right of proxy at the Meeting reception desk.

5. Questionnaire Survey

If you exercise your voting rights via スマート行使® (smart voting), we would appreciate your cooperation in filling out the questionnaire survey. The results of the questionnaire survey will be used for our management.

• Where there are changes in either this Convocation Notice or the items for which measures for providing information in electronic format are to be taken, such information, displaying the matters prior to the change and after the change, will be posted on the aforementioned websites.
• Among the items for which measures for providing information in electronic format are to be taken, the following items are not included in this Convocation Notice or in the paper-based documents delivered to shareholders who have made a request for delivery of such documents, but only on each of the aforementioned websites, based on relevant laws and the Company’s Articles of Incorporation. In addition, the Audit & Supervisory Board Members and the Independent Auditor have audited the documents subject to be audited, including the following items (However, matters marked Unaudited are excluded).

Business ReportCurrent Status of the Company (Principal group business, Principal group offices, Group employees, Principal sources of borrowings, Outline of Financing and Capital Expenditure, Trends in Value of Assets and Operating Results), Matters Related to Directors, Officers and Audit & Supervisory Board Members (Status of External Directors and External Audit & Supervisory Board Members), Matters Related to Shares of Mitsui & Co., Ltd., Matters Related to Subscription Rights to Shares, etc., Status of Independent Auditor, Necessary Systems to Ensure Appropriate Operations and Status of Operations of the Systems.Consolidated Financial StatementsConsolidated Statements of Changes in Equity, Consolidated Statements of Comprehensive Income [Supplementary Information] (Unaudited), Segment Information [Supplementary Information] (Unaudited), Notes to Consolidated Financial Statements.Non-Consolidated Financial StatementsStatements of Changes in Equity, Notes to Non-Consolidated Financial Statements.ReferenceEquity Securities Held (Unaudited)

Note: “Mitsui,” “Mitsui & Co.” and the “Company” are used to refer to Mitsui & Co., Ltd. (Mitsui Bussan Kabushiki Kaisha). The term the “Group” and the “Mitsui & Co. Group” refers to “business group” as defined in Article 120, Paragraph 2 of the Regulation for Enforcement of the Companies Act of Japan.

For shareholders with physical disabilities or impairments

Please feel free to ask management staff for assistance with wheelchair support, guidance to seats and restrooms, and other services upon request. In addition, written assistance at the reception desk is available and sign language interpreters are on standby.

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