Ken Siegel > Morrison Foerster > Tokyo, Japan > Lawyer Profile
Morrison Foerster Offices

SHIN-MARUNOUCHI BUILDING, 29TH FLOOR
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Ken Siegel

Work Department
Corporate M&A
Position
Tokyo Managing Partner
Career
Ken is managing partner of the Tokyo office and head of the office’s 50 lawyer M&A team. His practice focuses on the representation of high-technology companies in acquisitions, joint ventures, and strategic alliances. Ken has spent his entire career with MoFo and has practiced in Japan for over 25 years, serving as the Tokyo managing partner for the last 20 years.
Education
Amherst College, B.A.
University of Chicago Law School, J.D.
Bar Admissions: California and Japan (Gaikokuho-Jimu-Bengoshi)
Lawyer Rankings
Japan > TMT: International firms and joint ventures
Widely praised for its grasp of novel areas such as AI and machine learning, Morrison Foerster’s leading technology transactions group in Tokyo has been advising major clients in the TMT space on high-profile matters for over two decades. With considerable international experience handling IP matters for tech companies, Masato Hayakawa leads the group. Ken Siegel, managing partner of the firm’s Tokyo office and head of its M&A team, regularly assists high-tech companies with acquisitions, joint ventures, and strategic alliances. Yukihiro Terazawa focuses on acting for international clients in Japanese litigation and tech transactions. Seth Graham’s broad practice covers licensing arrangements, technology transfers, outsourcing transactions, and development agreements; he is noted for his AI and semiconductors expertise, among other areas, as well as his project management skills.
Japan > Corporate and M&A: International firms and joint ventures
(Hall of Fame)Morrison Foerster’s leading M&A practice in Tokyo offers a comprehensive service to Japanese and international clients encompassing public and private acquisitions, carve-outs, spinouts, and joint ventures. Recent highlights for the group include advising the board of directors and Transactional Special Committee of Toshiba Corporation on the $15.2bn take-private tender offer proposal made by Japan Industrial Partners. Ken Siegel, managing partner of the firm’s Tokyo office and M&A practice head, regularly acts for high-tech companies in acquisitions, joint ventures, and strategic alliances. Gary Smith
has over 30 years of experience handling cross-border M&A, especially in the life sciences, tech, and media sectors. Stephen DeCosse focuses on public and private M&A and investments for trading houses and private equity firms. Randy Laxer and Jeremy White are also key figures in the team.
Lawyer Rankings
- Corporate and M&A: International firms and joint ventures Japan
- Hall of Fame Japan > Corporate and M&A: International firms and joint ventures
- TMT: International firms and joint ventures Japan
Top Tier Firm Rankings
- Antitrust and competition: International firms and joint ventures
- Corporate and M&A: International firms and joint ventures
- Dispute resolution: International firms and joint ventures
- Intellectual property: International firms and joint ventures
- Real estate and construction: International firms and joint ventures
- TMT: International firms and joint ventures