Apr 24, 2026

  • Corporate

Determination of Details Regarding Share Acquisition Associated with the Introduction of the Trust-Based Stock Compensation System

Name of listed company: Chugai Pharmaceutical Co., Ltd.
Code number: 4519 (Prime Market of Tokyo Stock Exchange)
Head office: 1-1, Nihonbashi-Muromachi 2-Chome, Chuo-ku, Tokyo
President & CEO: Osamu Okuda
Inquiries to: Kae Miyata
Head of Corporate Communications Dept.
Tel: For media:
+81-(0)3-3273-0881
For investors:
+81-(0)3-3273-0554

TOKYO, April 24, 2026 -- Chugai Pharmaceutical Co., Ltd. announced that, at the meeting of the Board of Directors held today, it resolved details regarding the introduction of the trust-based stock compensation system, including the scale and timing of acquisition of the Company’s shares, as follows.

The revision of the stock compensation system, including the introduction of this system for the Company’s directors and the Company’s subsidiaries’ directors, as announced in the “Revision of the Stock Compensation System” dated January 29, 2026, was approved at the 115th Annual General Meeting of Shareholders held on March 26, 2026, as well as at the Extraordinary General Meetings of Shareholders of the Company’s subsidiaries that are subject to this system.

Details of the Executive Compensation BIP Trust Agreement

(1) Type of Trust

Monetary trust other than a specified solely-administered
monetary trust

(2) Purpose of Trust

Granting incentives to Directors, etc.

(3) Trustor

The Company

(4) Trustee

Mitsubishi UFJ Trust and Banking Corporation
(Co-Trustee: The Master Trust Bank of Japan, Ltd.)

(5) Beneficiaries

The Company’s directors*, and the Company’s subsidiaries’
directors who meet the beneficiary requirements
* Excluding non-executive directors

(6) Trust Administrator

A third party with no interest relationship with the
Company

(7) Trust Agreement Date

April 27, 2026

(8) Trust Period

April 27, 2026 to the end of May, 2030

(9) System Commencement Date

April 27, 2026

(10) Exercise of Voting Rights

No

(11) Type of Shares to Be Acquired

Common shares of the Company

(12) Trust Fund Amount

1,860 million yen
(Including the trust funds, trust fees, and trust expenses
for the Company’s subsidiaries’ directors)

(13) Timing of Share Acquisition

May 1, 2026 to the end of May, 2026

(14) Method of Share Acquisition

From the stock market

Details of the Stock Grant ESOP Trust Agreement

(1) Type of Trust

Monetary trust other than a specified solely-administered
monetary trust

(2) Purpose of Trust

Granting incentives to Employees, etc.

(3) Trustor

The Company

(4) Trustee

Mitsubishi UFJ Trust and Banking Corporation
(Co-Trustee: The Master Trust Bank of Japan, Ltd.)

(5) Beneficiaries

Executive officers and employees of the Company, and
employees of the Company’s subsidiaries who meet the
beneficiary requirements

(6) Trust Administrator

A third party with no interest relationship with the
Company

(7) Trust Agreement Date

April 27, 2026

(8) Trust Period

April 27, 2026 to the end of May, 2030

(9) System Commencement Date

April 27, 2026

(10) Exercise of Voting Rights

No

(11) Type of Shares to Be Acquired

Common shares of the Company

(12) Trust Fund Amount

2,500 million yen
(Including the trust funds, trust fees, and trust expenses for
the Company’s subsidiaries’ employees)

(13) Timing of Share Acquisition

May 1, 2026 to the end of May, 2026

(14) Method of Share Acquisition

From the stock market

Contact:

  • For Media
  • Chugai Pharmaceutical Co., Ltd.
  • Media Relations Group, Corporate Communications Dept.,
  • Naoki Kouzai
  • Tel: +81-3-3273-0881
  • E-mail: pr@chugai-pharm.co.jp
  • For Investors
  • Chugai Pharmaceutical Co., Ltd.
  • Investor Relations Group, Corporate Communications Dept.,
  • Takayuki Sakurai
  • Tel: +81-3-3273-0554
  • E-mail: ir@chugai-pharm.co.jp