Masakazu Masujima

Partner @

Mori Hamada & Matsumoto


Masa is the best known lawyer who is committed to the startup ecosystem in Japan. For over 20-year dedication to the Japan’s startup ecosystem, he has helped startups implement global-level startup strategies such as disruption strategy, open innovation strategy as well as rulemaking strategy. On a venture financing end, Masa is a strong believer of the San Francisco Bay Area’s practices and, leveraging his carrier with Wilson Sonsini at Silicon Valley, has enthusiastically introduced the practices like lean financing model, equity incentive structure and startup buyout strategy. Among others, he has won the Innovative Lawyers award by Financial Times in 2017 with his invention of Japan version SAFE and successful fundraising of JPY1.1B by SAFE. Masa is a graduate from Columbia Law School 2006, and admitted to practice N.Y. bar and Japan bar. He is also admitted as a patent attorney in Japan.

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