Jun Usami

Partner, Tokyo


“He properly implements policy and identifies issues. He provides not only legal advice but also business perspectives.” “Mr. Usami has strong bilingual capabilities and practical knowledge working on complicated cross-border transactions.”
Chambers Asia-Pacific 2023


Jun Usami is the Executive Partner of Tokyo office of the Firm and 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 widely regarded as one of the very top M&A lawyers in the Japan legal market and listed as a leading lawyer for M&A in Japan in Chambers Global, Chambers Asia-Pacific, Asia Pacific Legal, IFLR 1000 and The Best Lawyers in Japan. Chambers reports that "the client endorses his 'excellent legal analytical skill set,' adding that "he provides solution-oriented services and is very client service-focused."' He was selected for Japan's top 100 lawyers in 2023 by Asia Business Law Journal.

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
University of Washington School of Law
University of Tokyo


Representation of PayPal Holdings, Inc. on its acquisition of Paidy Inc., a leading two-sided payments platform and provider of buy now, pay later solutions in Japan, for an enterprise value of ¥300 billion, or approximately US$2.7 billion

Representation of Special committee of LINE Corporation (LINE) in the sale process of LINE in its pending take-private by Naver Corp. and SoftBank Group Corp., to be followed by a merger between LINE with internet portal Yahoo Japan Corp., in a transaction valuing LINE at approximately US$12 billion. This transaction was awarded "M&A Deal of the Year: North Asia" at the Asia Legal Awards 2020 and "M&A Deal of the Year (Premium)" at the ALB Japan Law Awards 2020

Representation of Panasonic Corporation in 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 DIC Corp., a Japanese fine chemicals company, and its US subsidiary Sun Chemical Corp., in DIC's €1.15 billion acquisition of BASF's global pigments business, known as BASF Colors & Effects (BCE)

Representation of Mizuho Leasing Company, Limited in its US$2.4 billion acquisition of Aircastle Ltd., a Bermuda aircraft leasing company, together with consortium partner Marubeni Corporation

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

Representation of Mitsui & Co., Ltd., a Japanese trading company, as the founder of and lead investor in Venchi Japan K.K., a joint venture company with Venchi S.P.A., an Italian gourmet chocolate manufacturer

Representation of ND Software Co., Ltd., a Japanese company engaged in the development of software for the nursing and hospital sector, its privatization via a recommended management buyout/tender offer

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 Corp., a Japanese medical equipment company, in its agreement with leading Russian healthcare provider R-Pharm Holding, LLC to establish a diagnostic imaging equipment joint venture that covers nine members of the Commonwealth of Independent States (CIS), including Russia

Awards and Recognition

Leading Lawyer (Band 1): Corporate/M&A—Japan, Chambers Global 2024 and Chambers Asia-Pacific 2024

Leading Individual: Bengoshi: Corporate and M&A: International Firms and Joint Ventures—Japan, The Legal 500 Asia Pacific, 2014 – 2024

Leading Lawyer (Highly regarded): M&A—Japan, IFLR1000 2014 – 2023

The A-List Lawyer: Japan's Top 100 Lawyers, Asia Business Law Journal, 2020 – 2023