Stock Information

Equity Shares

Special account administrators
Fiscal year	April 1 through March 31 of the following year
Annual general shareholders' meeting	Within three months from April 1
Record date for voting rights	31-Mar
Record date for year-end dividends	31-Mar
Record date for interim dividends	September 30 (When we pay an interim dividend)
Stock transfer agent	Mizuho Trust & Banking Co., Ltd. 3-3, Marunouchi 1-chome, Chiyoda-ku, Tokyo, Japan
Stock transfer agent's contact office	Stock Transfer Agency Department of the Head Office of Mizuho Trust & Banking Co., Ltd. 3-3, Marunouchi 1-chome, Chiyoda-ku, Tokyo, Japan Mailing address: Mizuho Trust & Banking Co., Ltd. Stock Transfer Agency Department 2-8-4, Izumi, Suginami–ku, Tokyo 168-8507, Japan Telephone: +81(0)3-5213-5213,0120-288-324 (Toll Free only from Japan) 9:00 to 17:00 Tokyo local time (excluding Saturdays, Sundays and national holidays)
Special account administrators	Mizuho Trust & Banking Co., Ltd. 1‐3-3 Marunouchi, Chiyoda-ku, Tokyo Mailing address and contact for inquiries: Stock Transfer Agency Department Mizuho Trust & Banking Co., Ltd. 2-8-4 Izumi, Suginami-ku, Tokyo 168-8507, Japan Telephone: 0120-288-324 (Toll Free only from Japan) Effective February 6, 2026, we have consolidated the management of our special accounts with Mizuho Trust & Banking Co., Ltd.
Public notices	Sompo Holdings issues public notices electronically. Electronic public notices (Japanese only) If a public notice cannot be issued electronically, it will be published in the Nihon Keizai Shimbun newspaper.
Exchange listings	Tokyo Stock Exchange (Prime Market)
Securities code	8630
Total number of authorized shares	３.6 billion shares
Total number of shares outstanding	934,228,767shares (As of June 30,2026)
Number of liquid stocks（unit）	6,650,965 unit (As of March 31,2026)
Share-trading lot size	100 shares

Shareholder composition

(As of March 31,2026)

Shareholder composition

Major Shareholders

(As of March 31,2026)

Name of Shareholder	Investment in the Company
Name of Shareholder	Number of Shares Held (Thousands)	Portion of Shares Outstanding (%)
The Master Trust Bank of Japan, Ltd. (Trust account)	145,863	16.32
Custody Bank of Japan, Ltd. (Trust account)	52,168	5.84
STATE STREET BANK AND TRUST COMPANY 505103	30,465	3.41
STATE STREET BANK AND TRUST COMPANY 505001	24,830	2.78
Sompo Holdings Employee Shareholders Association	20,726	2.32
JP MORGAN CHASE BANK 380055	16,561	1.85
THE CHASE MANHATTAN BANK,N.A. LONDONSECS LENDING OMNIBUS ACCOUNT	15,441	1.73
THE BANK OF NEW YORK MELLON 140042	13,061	1.46
GOVERNMENT OF NORWAY	12,767	1.43
JP MORGAN CHASE BANK 385781	12,701	1.42
Total	344,587	38.55

Notes:

1.In addition to the above, there are 40,398 thousand shares of treasury stock owned by the Company. The number of said treasury stock does not include 1,587 thousand shares of the Company’s stock owned by Mizuho Trust & Banking Co., Ltd. (Retrustee: Custody Bank of Japan, Ltd. (Trust account E), which was set up for the purpose of the “Board Benefit Trust (BBT)” plan.)
2.The portion of shares outstanding is calculated after deducting treasury stock (40,398 thousand shares).