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Nishimura & Asahi Receives Top Rankings in Benchmark Litigation Asia-Pacific 2024
Kei Umebayashi is a partner at Nishimura & Asahi and previously worked at the Special Investigative Section of the Tokyo District Public Prosecutors Office, where he obtained extensive experience and know-how in criminal investigations.
He is expert at gathering evidence and conducting hearings.
He mainly handles cases in which the executives or officers of a company leaked, intentionally or accidentally, the company’s confidential information, including customer data and business secrets.
He deals with matters conducted by Japanese authorities, including the Securities and Exchange Surveillance Commission (SESC) and the Fair Trade Commission.
Additionally, he gives valuable advice concerning a variety of other matters, such as insider trading, antitrust law, leniency applications under antitrust law, and inquiries by the US Department of Justice, European Commission and other foreign authorities when a company is targeted by them due to alleged violations of antitrust laws.
Awards & Rankings
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24 Nishimura & Asahi Lawyers Named Thomson Reuters “Stand-out Lawyers 2024”
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Outstanding Results for Nishimura & Asahi at the Legal 500 Asia Pacific 2024
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Nishimura & Asahi receives top rankings in Chambers Asia-Pacific 2024
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The Nikkei "Most Successful Lawyers in 2023"
Seminars
Publications
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Getting the Deal Through - Government Investigations 2017 (Japan Chapter)
Articles
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Corpus Juris Crisis Management
Books
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Cases Dealing with Corporate Scandals - Legal Practice Essentials (Second Edition)
Books
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PRACTICE OF REGULATIONS ON INSIDER TRADING (Second Edition)
Books
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How to do an internal investigation - What corporate auditors must understand
Articles
News
Education
- 1989
- The University of Tokyo (LL.B.)
Professional Experience
- Member of Task Force (improper conduct of type designation issue) organized in the Road Transport Bureau of MLIT
- Professor, University of Tokyo Graduate Schools for Law and Politics
- Outside Auditor, ITOHAM YONEKYU HOLDINGS INC.
- Member of Task Force organized in the Railway Bureau of MLIT
- Member of Task Force (final inspection issue) organized in the Road Transport Bureau of MLIT
- Member of Task Force (fuel consumption issue) organized in the Road Transport Bureau of MLIT
- Part-time professor of Keio University Law School
- Member of the Independent Committee of Japan Sport Council
- Counselor of the Ministry of Internal Affairs and Communications
- Partner of Nishimura & Asahi
- Resigned from Public Prosecutor, Registered as an Attorney-at-Law, Joined Nishimura & Asahi
- Executive Assistant to Deputy Chief Cabinet Secretary
- Public Prosecutor, Secretarial Division, Ministry of Justice
- Public Prosecutor, Chiba District Public Prosecutors' Office
- Public Prosecutor, Criminal Affairs Bureau of the Ministry of Justice
- First Secretary, Japanese Embassy, U.K.
- Public Prosecutor, Criminal Affairs Bureau of the Ministry of Justice
- Public Prosecutor, Tokyo, Fukuoka, Yokohama and Shizuoka District Public Prosecutors' Offices