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 international M&A, joint ventures, investment fund formation and cross-border finance/commercial transactions. She teaches Japanese securities law, investment fund regulation and corporate law to foreign law students as a lecturer at law schools in Tokyo. Masako serves as a member of an independent committee at Japan Securities Dealers Association (JSDA) and the Japanese Law Translation Council of Ministry of Justice of Japan, as well as an officer of Diversity Council of International Bar Association (IBA) and the International Affairs Office of Japan Federation of Bar Associations (JFBA).

Masako was admitted to the New York Bar in 2014.

Published Works

Contact details

81-3-3274-3807 /

Areas of Practice


Year Qualified



University of Washington School of Law (LL.M.)
Waseda University (LL.B.)


American Bar Association (ABA)
Tokyo Bar Association
Japan Federation of Bar Associations
International Bar Association (IBA)