Benjamin O.Lang

Of Counsel

Tokyo + 81.3.6744.1605

Ben Lang has a wealth of experience advising Japanese and international clients on cross-border transactions. Having practiced for nearly 15 years in Tokyo and New York, Ben has advised on a wide variety of strategic and commercial transactions, including public and private M&A, divestitures, spin-outs, joint ventures, and other investments. He has a particular focus on the life sciences industry, where Ben also handles international co-development, licensing, distribution, and other arrangements and provides guidance to international clients on market entry and clinical trials in Japan. In addition, he has substantial experience working with financial institutions and energy industries in Japan.

Ben's recent transactions prior to joining Jones Day in 2017 include advising a large U.S. retailer in the divestment of its Japan operations, a U.S. renewable power company in the divesture of several Japan-based projects, a public Japanese company in the acquisition of a U.S. medical device manufacturer, and a U.S. telecommunications company in establishing a Japanese joint venture.

Ben has had a close association with Japan for more than 30 years, including an internship in a polymer research laboratory near Kyoto and working in a city hall in Hokkaido. He regularly works with clients in Japanese and English.


  • Sumitomo Dainippon Pharma acquires late stage biopharma companies and forms alliance with Roivant Sciences Ltd. worth $3 billionJones Day advised Sumitomo Dainippon Pharma Co., Ltd. ("Sumitomo") in an acquisition of late stage biopharma companies and formation of alliance with Roivant Sciences Ltd.
  • Torii Pharmaceutical acquires exclusive marketing and licensing rights from BioCryst for BCX7353 in JapanJones Day represented Torii Pharmaceutical Co., Ltd. in drafting, reviewing, and negotiating its commercialization and license agreement with BioCryst Pharmaceuticals, Inc.
  • Kaga Electronics acquires Fujitsu Electronics Inc.Jones Day advised Kaga Electronics Co., Ltd. in its acquisition of Fujitsu Electronics Inc.
  • Hudson's Bay Company sells Gilt Groupe K.K. to Gladd Inc.Jones Day advised Hudson's Bay Company in the sale of its subsidiary, Gilt Groupe K.K., to Gladd Inc.
  • MassMutual International sells 85.1 percent of MassMutual Japan to Nippon LifeJones Day advised MassMutual International LLC in its sale of 85.1 percent of the shares of MassMutual Japan, MassMutual's wholly-owned life insurance and wealth affiliate, to Nippon Life for JPY104.2 billion (approximately US$955 million).
  • PAG invests in Key Safety Systems to finance acquisition of global assets of Takata CorporationJones Day represented PAG Asia Capital Ltd. and PAG Asia II LP in connection with its investment in Key Safety Systems, a subsidiary of China-based Ningbo Joyson Electronic Corporation, to finance the acquisition of substantially all of the global assets of Takata Corporation out of bankruptcy in the U.S. and Japan and certain non-bankruptcy transactions elsewhere in the world.
  • PAG Holdings sells minority interest to Blackstone Strategic Capital Holdings FundJones Day represented PAG Holdings Ltd., one of Asia’s largest independent alternative asset managers, in connection with its sale of a minority interest in PAG to the Blackstone Strategic Capital Holdings Fund.
  • We use cookies to deliver our online services. Details of the cookies and other tracking technologies we use and instructions on how to disable them are set out in our Cookies Policy. By using this website you consent to our use of cookies.