Atsushi Oishi

Private Client / Wealth Management, M&A, tax

Worked at Weil, Gotshal & Manges, New York (2003-04).

Admitted in Japan, 1998; New York, 2004. Daini-Tokyo Bar Association; Registered as Licensed Tax Accountant, 2006; Member of Task Force on Management Buy Out Transactions organised by the Ministry of Economy, Trade and Industry (2007); Member of the Expert Committee on Anti-Tax Haven Legislation and Intangible Assets, organized by the Ministry of Economy, Trade and Industry (2013); Invited researcher at Global Family Business Research Institute, Waseda University (2016-); Member of PB Professional Ethics Review Committee, The Securities Analysts Association of Japan (2018-); Member of PB Education Committee, The Securities Analysts Association of Japan (2018-); Member of Study Group on Family Business Governance, organized by Ministry of Economy, Trade and Industry (2025).

"Chambers Global Practice Guides Private Wealth 2024 - Japan Chapter" Chambers Global Practice Guides Private Wealth 2024, 2024; "Overview of Family Governance" Commercial Law Review No. 2358, 2024; "Legal and Tax Affairs concerning Family Governance for the Prevention and Settlement of Conflicts within the Family" Chuokeizai-sha, Inc., 2023; "Legal and Tax Affairs in Business Successions and M&As for Family Businesses - Second edition" Shojihomu, 2022; "M&A Strategies from both a Tax and Legal Perspective - Third edition" Chuokeizai-sha, Inc., 2022; "Changes in Business Succession" Nikkei Publishing Inc., 2019; "Q&A Anti-Tax Haven Rules in Practice" Zeimu Keiri Kyokai, 2019; "Increased Options for M&As: Legal and Tax Affairs Under the Revised Industrial Competitiveness Enhancement Act" Junkan Keirijouhou No. 1523, 2018.

Graduated from the University of Tokyo (LLB, 1996); New York University School of Law (LLM, 2003).