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Notification of Ransomware Incident

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Company Name: Eisai Co., Ltd.
Representative: Haruo Naito
Representative Corporate Officer and CEO
(Code 4523 Tokyo Stock Exchange Prime Market)
Inquiries: Sayoko Sasaki
Vice President,
Corporate Communications
Phone +81-3-3817-5120

Eisai Co., Ltd. announced today that the Eisai Group became aware of a ransomware incident that encrypted some of the Group’s servers. In response to this case, Eisai Group immediately established a company-wide task force, and is working on recovery efforts with the advice of external experts and undertaking measures to understand the scope of the incident. Additionally, Eisai Group has consulted with law enforcement.

Whilst it is expected to take some time to gauge the full extent of the incident, the information below further details what is known at this time. We deeply apologize for any inconvenience and worry this may have caused to our partners and stakeholders.

1. Background
A ransomware incident that encrypted some of Eisai Group’s servers was detected late night on Saturday, June 3, Japan time. We immediately implemented our incident response plan and launched an investigation with the aid of our cybersecurity partners. A company-wide task force was convened to rapidly work on response procedures.

2. Status and Future Response
Certain systems both in and outside of Japan, including logistics systems, have been taken offline as a result of the incident and our ongoing response process. Our corporate websites and email systems are operational at this time. The possibility of data leakage is currently under investigation.

Currently, Eisai Group is working closely with external experts and law enforcement in an effort to protect its systems and to make a successful recovery. We will continue to work to minimize any inconvenience to our partners and stakeholders.

Any potential impact of this incident on the consolidated earnings forecast of this fiscal year is currently under careful examination. If determined that revisions are necessary, an announcement will be made as soon as possible.

<Media Contact for this matter>
Public Relations Department: +81-(0)3-3817-5120

Our Values

Values are an integral part of our foundation. With every decision, we ensure that we follow:

Integrity

Integrity is the living up to legal, moral and ethical principles in the conduct of HI-Eisai Pharmaceutical Inc. business. It means that each employee embodies the value of integrity, and therefore represents the company in honesty and rectitude in all the ways they do their work.

It is expected that each employee would make decisions guided by good judgement, not just for one‘s self, but for HI-Eisai as the company. An employee who acts with integrity ensures that he has understanding of the principles by which the company operates, and in situations where he lacks clarity, will actively seek guidance.

Respect

The company is committed to ensure that it maintains a safe, inclusive, and healthy working environment that promotes productivity among employees. All employees are expected to show respect to fellow employees, customers, and patients, regardless of differences in gender, culture, backgrounds, and beliefs. Leaders in the organization are likewise expected to promote inclusivity with their teams, and shall not tolerate any discriminatory and offensive actions.

Accountability

Accountability at work means assuming responsibility for the business outcome and how that is achieved. It means that every employee, in whichever position, are equally responsible for the decisions and actions they make for the company. It is likewise, the responsibility of each employee to report, any knowledge of misconduct or potential violation to the company‘s rules and regulations.

Patient-Centric

At the heart of the company‘s operation are the patients. This means that every decision to be made, considers the potential impact and benefit to the patients. As such, the company commits itself in ensuring that business objectives align with its principle of human health care or hhc. The programs created and implemented are based on how well they could contribute to improving patients‘ lives.

For field-based employees, being patient-centric means that the focus of engagements with customers are on understanding patient needs as well as providing these stakeholders with comprehensive information on how HI-Eisai‘s products can support their patients goals.

For each employee, being patient-centric means taking on their responsibilities with care and consideration on how it impacts the patients experience, be it by making relevant information readily available for the doctors; or by ensuring access and availability to the medicines we offer.

Excellence

As a patient-centric company, we define Excellence by the outstanding quality of our work to improve patients‘ lives. Each employee is expected to consistently demonstrate work ethics that align to our values, policies, and our desire to provide above standard service. The company is committed in ensuring that all actions are in compliance with legal requirements.

Being excellent means that every employee passionately strives to be better and participates in the company‘s initiatives to develop their members in terms of knowledge, skills, and behavior, which will support a continuously improving, responsible and performance-driven workforce.