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 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 - 2017
Corporate/M&A – Japan

Leading Lawyer, Chambers Global, 2012 - 2017
Corporate/M&A – Japan

Leading Lawyer, The Legal 500 Asia-Pacific, 2014 - 2017
Japan: Corporate and M&A

Leading Lawyer, The IFLR1000, 2014 - 2017
M&A – Japan