Mr Atsushi Oishi > Mori Hamada & Matsumoto > Tokyo, Japan > Lawyer Profile

Mori Hamada & Matsumoto’s corporate practice is lauded by clients for its ‘extremely high performers‘ and for being ‘reliable in difficult situations‘. Practice heads Hajime Tanahashi and Gaku Ishiwata have specialisms within private equity and venture financing, while the wider practice is able to assist clients with matters such as corporate restructurings, cross-border acquisitions, international mergers, joint ventures, squeeze-out transactions, and shareholder activism. The team, which also includes notable contacts Akira Matsushita and Atsushi Oishi, has a particular strength in the technology sector, as well as experience within the manufacturing, banking, financial services, pharmaceuticals and energy industries. Norihito Sato is commended for providing ‘thoughtful and practical solutions’ for clients.

Mori Hamada & Matsumoto‘s tax practice has a particular focus on tax planning, with additional expertise in advising on estate planning for high-net-worth individuals, the tax implications of mergers and acquisitions, and cross-border transactions. The team is jointly headed up by Atsushi Oishi, Makoto Sakai, and Hiroyuki Kurihara, who have significant experience in tax investigations, private wealth management, and tax planning for cross-border mergers and acquisitions, respectively. Clients are also offered tax advisory services by licensed tax accountants, as well as wealth management advice. Hiroshi Oyama is recommended for his work in tax planning and tax disputes.

In tandem with the firm’s tax practice, the private wealth practice at Mori Hamada & Matsumoto provides a ‘unique‘ one-stop-shop service to its clients, spanning M&A, corporate reorganisations and estate planning. Practice co-head and ‘leading expert‘ Atsushi Oishi advises an extensive client list, including both wealthy individuals and listed and private companies, on cross-border transactions. The firm’s strong litigation practice further bolsters the private wealth team; Makoto Sakai, who leads the team alongside Oishi, has a wealth of experience in tax investigations and tax litigation for high-net-worth individuals and Hiroshi Oyama handles tax disputes, providing ‘accurate and reliable‘ advice. Senior associate Yoshihiko Abe advises high- and ultra-high-net-worth individuals on a range of wealth management planning matters. Promoted to partner in 2023, Koyo Madakoro is a licensed tax accountant who specialises in wealth management. Tax accountant Yuko Maruyama is another name to note.