Yo Ota > Nishimura & Asahi > Tokyo, Japan > Lawyer Profile

Nishimura & Asahi
TOKYO 100-8124

Work Department

Hostile takeovers, shareholder activism, and corporate governance practice


Partner, Tokyo


Yo Ota’s practice covers a wide range of fields, focusing on hostile takeovers, shareholder activism, and corporate governance. He always delivers creative solutions to clients.

Mr. Ota has a breadth of practical international and domestic legal experience, focusing on the areas of hostile takeovers, shareholder activism, M&A transactions (including cross-border deals), corporate governance and other corporate matters, domestic / international Tax, personal information / data protection, and works on a wide range of corporate legal affairs. He was selected as the NIKKEI “Most Successful Lawyers in 2022” in the corporate law category (1st), the NIKKEI “Most Successful Lawyers in 2021” in the corporate law (excl. M&A) category (2nd), and also the NIKKEI “Most Successful Lawyers in 2020” in the M&A category (1st) and the corporate law category (3rd). In addition, he dedicates himself to research and writing activities that bridge academia and practice on cutting-edge issues related to the Companies Act, the Financial Instruments and Exchange Act, tax law, the Act on the Protection of Personal Information, etc. He has edited and authored many books and papers, such as “Schemes and Tax Issues of M&A and Corporate Restructuring, 4th Ed.”, “Corpus Juris M&A – Completely Revised Edition (first volume) (second volume)”, “Handbook on Share Options (Fifth Edition)”, “Corpus Juris Series – Personal Information Protection Legislation (Global)”, “Handbook on Class Shares”, “Nuts and Shell of the 2019 Amendment of the Companies Act and Practical Response”, “Legal Issues and Practices of Virtual Shareholders’ Meeting”, etc.


Japanese, English


2001 | Admitted in New York
1993 | Admitted in Japan


2000 | Harvard Law School (LL.M.)
1991 | The University of Tokyo (LL.B.)

Lawyer Rankings

Japan > Corporate and M&A: Independent local firms

The corporate department at Nishimura & Asahi is jointly led by Yoshinobu Fujimoto, who is known for his work on cross-border mergers and acquisitions, and Asa Shinkawa, who is the name to note for private equity matters. Other work the practice undertakes includes joint ventures, strategic planning, closing procedures, and business integrations. Hiroshi Uchima is adept at advising on large and complex transactions, while Yuji Shiga is particularly experienced in risk management and international transactions. Masaki Hosaka, Yo Ota and Yuki Oi are other key members of the team, with specialisms including advice within the industrial and financial sectors as well as proficiency in matters involving international private equity houses.

Japan > Tax: Independent local firms

(Hall of Fame)

Yo OtaNishimura & Asahi

The tax practice at Nishimura & Asahi is especially recommended for its experience in handling tax controversies before Japanese courts, as well as other forms of tax-related disputes, for which Akihiro Hironaka is a recommended individual. The team is led by the experienced Yo Ota, who regularly covers matters involving M&A, cross-border transactions, and corporate governance issues. For high-profile tax litigation, Tsuyoshi Ito is the recommended name, while Mayuko Nakamura regularly advises on the tax aspects of international transactions.