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安井 桂大
安井 桂大


  • Partner
  • Tokyo

Keita is a partner in our Corporate practice with a focus on corporate governance and sustainability-related matters. He provides legal services on various corporate matters, including M&A transactions and relationships with shareholders, which relate to the interests of multi-stakeholders by applying his experience of working in the Financial Services Agency and for Fidelity International.

Keita has experience of working in the Financial Services Agency of the Government of Japan as a government official who has been in charge of the revisions of Japan’s Corporate Governance Code and Japan’s Stewardship Code. Furthermore, he has gained practical experience in Fidelity International, which is one of the largest global asset management companies, through engaging with investee companies, in proxy voting, and sustainable investing in the Investment Management Department. He applies this experience to provide legal services on various corporate matters, including corporate governance, sustainability-related matters, M&A transactions, and relationships with shareholders. He provides tailored advice on the matters by properly considering the interests of multi-stakeholders based on his extensive knowledge and experience in the field. He has also authored numerous books and articles, and he has been a regular speaker at lectures and seminars on practical legal issues.

Representative Work

N&A Newsletters





The London School of Economics and Political Science (LL.M.)
The University of Tokyo, School of Law (J.D., cum laude)

Professional Experience

Member of Working Group on ISO/TC309, Ministry of Economy, Trade and Industry, Japanese Industrial Standards Committee
Investment Management Department, Fidelity International Limited, Tokyo (specializing in engagement, proxy voting and sustainable investing) 
Corporate Accounting and Disclosure Division, Planning and Coordination Bureau, Financial Services Agency (specializing in Japan's Corporate Governance Code and Japan's Stewardship Code)