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Gaku Ishiwata

Mori Hamada & MatsumotoMarunouchi Park Building2-6-1 Marunouchi, Chiyoda-kuTokyoJapan100-8222
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Global Leader

WWL Ranking: Recommended
WWL Ranking: Recommended

National Leader

Japan - M&A and Governance

Professional Biography

WWL Ranking: Recommended

WWL says

Gaku Ishiwata is a leading figure in the market and is commended as a go-to lawyer at for complex transactions.


Gaku Ishiwata is a partner of Mori Hamada & Matsumoto. His main areas of practice are mergers and acquisitions, private equity and other corporate matters. He was involved in formulating the Defence Guidelines issued by the Ministry of Justice and the Ministry of Economy, Trade and Industry of Japan as a member of the Corporate Value Study Group. He was also involved in amending the tender offer regulations as a member of the Sectional Committee on Financial System of the Financial System Council.

Recent examples of major M&A transactions on which he advised include: KKR’s acquisition of Calsonic Kansei (¥500 billion); Mizkan's acquisition of Ragu and Bertolli Brands from Unilever (US$2.15 billion); the merger between Nikko Cordial and Citigroup’s subsidiary (US$16 billion); and AB Volvo’s acquisition of Nissan Diesel (US$2.873 billion).

Mr Ishiwata is a graduate of the University of Tokyo (LLB, 1995) and the University of Chicago (LLM, 2001). He has worked for Davis Polk & Wardwell (2001-2002) and is admitted in both Japan and New York.

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