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Update on Previous Disclosure: Change Regarding Major Shareholder (Largest Shareholder)

Oct. 9, 2025


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Mitsui & Co., Ltd. ("Mitsui," head office: Tokyo, President and CEO: Kenichi Hori) made an announcement on September 22, 2025 entitled "Change Regarding Major Shareholder." Since then, Mitsui has been contacted by the relevant shareholder regarding the number of shares they hold.

1. Background to the change

In the September 22 announcement entitled "Change Regarding a Major Shareholder," Mitsui announced that National Indemnity Company, a wholly owned subsidiary of US-based Berkshire Hathaway Inc. had become a major shareholder. Today, Berkshire Hathaway Inc. informed us of the number of shares they held in Mitsui as of September 30, 2025, and in accordance, National Indemnity Company has become Mitsui's largest shareholder.

2. Overview of the shareholder related to the change

(1) Name National Indemnity Company
(2) Location 1314 Douglas Street, Suite 1400, Omaha, Nebraska, United States
(3) Title and name of representative President, Donald F. Wurster
(4) Description of business Insurance

3. Number of voting rights (number of shares) held by the relevant shareholder and the percentage out of the total number of shareholder voting rights before and after the change

  Number of voting rights
(number of shares)
Percentage out of the total number of shareholder voting rights
Before the change
(As of March 10, 2025)
2,854,014 units
(285,401,400 shares)
9.68%
After the change 2,920,449 units
(292,044,900 shares)
10.12%

Notes:
1. The number of voting rights stated above is, prior to the change, based on the Large Shareholding Report (or Change Report) submitted by National Indemnity Company, and after the change, based on information provided by the shareholder. In both cases, Mitsui itself has not verified the actual number of shares owned by National Indemnity Company.
2. The percentage out of the total number of shareholder voting rights held before the change is calculated based on the total number of shareholder voting rights of 29,494,895 units, subtracting 77,897,472 non-voting shares from the total number of outstanding shares of 3,027,386,972 as of September 30, 2024. The percentage out of the total number of shareholder voting rights after the change is calculated based on the total number of shareholder voting rights of 28,861,158 units, subtracting 19,625,776 non-voting shares from the total number of outstanding shares of 2,905,741,576 as of September 30, 2025.
3. The percentage out of the total number of shareholder voting rights is rounded to the second decimal place.
4. The ranking of major shareholders is an estimate based on information available to Mitsui, as in the shareholder register, we are not able to confirm the actual number of shares owned under each shareholder's name.

4. Outlook

This change is based on information received from Berkshire Hathaway Inc., and there are no specific facts available regarding the outlook.

Information

For inquiries on this matter, please contact

Mitsui & Co., Ltd.
Investor Relations Division
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Mitsui & Co., Ltd.
Corporate Communications Division
Telephone: +81-80-5912-0321
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