Masako Banno

Masako is an attorney at law licensed in Japan and New York, and a partner at Okuno & Partners, a full-service independent business law firm in Tokyo. She focuses on cross-border finance/commercial transactions and investment fund formation, as well as international corporate transactions such as M&A and joint ventures for global companies setting up their business in Japan. She teaches Japanese securities law, investment fund regulations and corporate law to foreign law students as a lecturer at Chuo University and Graduate School Faculty of Law in Tokyo. Masako has worked as a senior counsel to the Japan Securities Dealers Association (JSDA) for three years, where she obtained the first-hand experience in enforcement of FIEA (Financial Instruments Exchange Act). She regularly advises the clients about registration for share offering, statutory/timely disclosure, TOB, investment fund transactions, and regulatory issues of FIEA such as licensing, compliance, or extraterritorial application of FIEA. She is a member of the Japanese Law Translation Council at the Ministry of Justice of Japan, as well as an officer of Diversity & Inclusion Council of the International Bar Association (IBA), and the International Affairs Office of Japan Federation of Bar Associations (JFBA). 

Practice Area

Panel

  • International Panel

Qualified Year

  • 2004

Membership

  • International Bar Association (Officer, Diversity & Inclusion Council)
  • Japan Federation of Bar Associations (Officer, Office of International Affairs)
  • Tokyo Minato Rotary Club

Qualifications

  • 2012 LL.M.
  • 2000 LL.B.

Education

  • 2012 University of Washington School of Law (U.S.) (LL.M.)
  • 2000 Waseda University (LL.B.)

1 Contributions by Masako Banno

Japan Business Law 2025: Guide for UK Lawyers on Incorporation, Banking, Branches, Immigration, Employment, Contracts, Tax, Competition, Securities Regulation, Data Protection and IP
PRACTICE NOTES
Japan Business Law 2025: Guide for UK Lawyers on Incorporation, Banking, Branches, Immigration, Employment, Contracts, Tax, Competition, Securities Regulation, Data Protection and IP
Updated in June 2025 Introduction With the world’s third-largest nominal GDP, Japan is a preferred springboard for international firms establishing a first foothold in Asia and for locating research and development centres, given the region’s rising significance and the advanced technologies of Japanese companies. It serves as a key regional hub, a gateway to neighbouring Asian markets, and a setter of trends. International companies, especially manufacturers, gain from Japan’s suppliers, from large corporates to small and medium-sized companies, renowned for high-quality products and components. The country offers a mature legal framework with reliable, impartial courts, alongside a stable democratic environment. It is widely recognised as among the safest nations, and boasts sophisticated infrastructure and high-quality medical services. Businesses can adopt multiple structures when setting up in Japan. This guide outlines key considerations for newcomers before commencing operations in Japan. This guide should not be treated as an...
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