
Corporate M&A
Litigation
Capital Markets
Government and Internal Investigations
Antitrust and Trade Regulation
International Regulatory and Compliance
Noritaka Kumamoto is a Partner at Simpson Thacher & Bartlett in Tokyo, specializing in Mergers and Acquisitions and Litigation. With extensive experience representing major Japanese and U.S. corporations, he handles both inbound and outbound M&A transactions and government investigations. His notable clients include KKR, Sumitomo Life Insurance, and Murata Manufacturing. Before joining Simpson Thacher, Noritaka worked in the business and legal departments of major Japanese banks in Japan and New York. He holds an LL.M. in Taxation from New York University School of Law, an LL.M. from Columbia Law School, and a B.A. from Waseda University School of Law.
Mergers and Acquisitions
Regulatory Approvals
Capital Markets
Real Estate Transactions
Government and Internal Investigations

- Kohlberg Kravis Roberts & Co. L.P. and JIC Capital acquired the target/assets from Topcon Corporation in a management buyout on a date not available. - Deal value was 4000000000 Sector: Healthcare, Agriculture, Infrastructure; Location: not available. - On the acquirer side, counsel was not available; lawyers included Noritaka Kumamoto, Jonathan Stradling, Daisuke Ueta, Yuji Yagi, Makiko Harunari, Atsushi Usui, Chenyu Cui, Mark Watson, Etienne Renaudeau, Henry Llewellyn, Sandeep Mahandru, Jiaxin (Jessie) Li, Giovanna De Cristofaro, George Wang, Shuhao Fan, Xue Feng.
Mar 28 2025
4B
Private Equity
Partner
2021 – Unknown
Counsel
2017 – 2021
Associate
2007 – 2017

- NTT Global Data Centers Americas, Inc. acted as the seller in this Investment transaction. - The divestment involved assets operating in the Data Centers sector. - The transaction was announced on 02 Sep 2024 with a reported value of 4590000000.0.
Sep 02 2024
5B
M&A
1 min
LL.M., Columbia Law School
2001
B.A., Waseda University School of Law
1992