Hiroo Atsumi

Contact: Email: Hiroo Atsumi
Tel. +81-3-5501-2120

Hiroo Atsumi, founding partner of Atsumi & Sakai, has been recognized over a number of years by legal and financial commentators as one of Japan’s leading finance lawyers. He has extensive experience in banking, capital markets and structured/asset finance, and has represented most major Japanese financial institutions, and many global investment banks on high value and complex banking and finance transactions. (Bengoshi registered at Tokyo 2nd Bar Association, also admitted in New York). He speaks Japanese and English.

Admitted 1997: completion of legal trainee (member of the 29th graduating class), registered lawyer
1982: registered in the US, lawyer of New York
Bar Association Tokyo 2nd Bar Association
New York State Bar Association
Education 1974: Tokyo University (LL.B)
1981: New York University (M.C.J.)
Practice Area legal affairs at the bank, securitisation, structured finance, international finance, corporate law
Language Japanese, English

Recommendation and Awards


  1. “International Banking, Japan” International Financial Law Review, Special Supplement (September, 1992)
  2. “Japan Overview” The Legal Media Group Guide to the World’s Leading Structured Finance and Securitization Lawyers, (IFLR, 2007) [Co-author]
  3. “Growth Strategy 2017: Fine-tuning Japan’s Banking Act for Fintech,” Who’s Who Legal: Japan 2017, Law Business Research Ltd. (2017) [Co-author]