Jun Usami

Partner, Tokyo


“He ‘has very deep knowledge’ and ‘is a very good lawyer, not only technically but also in controlling the commercial aspects.’”
Chambers Global 2017


Jun Usami is co-head of White & Case's Corporate/M&A practice in Tokyo.

A recognised leader in the Japanese market, his work spans all areas of corporate practice, including M&A, private equity, management buyouts (MBOs), leveraged buyouts (LBOs), strategic alliances and joint ventures.

He has developed a strong track record in cross-border work, from mid-market to large, complex deals, and has also helped domestic clients to implement global compliance and incentive plans.

He has represented clients in a number of industries including industrial, automotive, TMT (telecommunications, media and technology), finance, retail and food and beverage business.

Jun is listed as a leading individual for M&A in Japan in Chambers Global, Chambers Asia-Pacific, Asia Pacific Legal and IFLR 1000. Chambers commends him for his "business-minded approach and client focus." He was selected for inclusion in the Fifth Edition of The Best Lawyers in Japan in the practice areas of Corporate and M&A Law and International Business Transactions.

Educated in Tokyo and Washington, Jun is fluent in both English and his native language of Japanese.

Jun is a member of the Daini Tokyo Bar Association.

Bars and Courts
Japan Bar
University of Washington School of Law
University of Tokyo


Representation of Panasonic Corporation on its 20 percent strategic equity investment in Blue Yonder, a leading US end-to-end supply chain software provider with an estimated enterprise value of US$5.5 billion.  Panasonic Corporation is a global corporation developing innovative technologies and solutions for wide-ranging applications in the consumer electronics, housing, automotive and B2B sectors

Representation of ValueAct Capital in its acquisition of a stake in Olympus Corporation, ValueAct's first investment in Japan

Representation of Mizuho Securities Co. Ltd., as financial advisor to SoftBank Group Corp. on its landmark acquisition for approximately £24.3 billion of ARM Holdings plc.

Representation of Fir Tree Partners in its acquisition of a stake in Kyushu Railway Company

Representation of Canon Medical Systems Corporation in its acquisition of Fysicon B.V.

Awards and Recognition

Leading Lawyer, Chambers Asia-Pacific, 2011 – 2020
Corporate/M&A - Japan

Leading Lawyer, Chambers Global, 2012 – 2020
Corporate/M&A - Japan

Leading Lawyer, The Legal 500 Asia-Pacific, 2014 – 2020
Japan: Corporate and M&A

Leading Lawyer, The IFLR1000, 2014 – 2020
M&A - Japan