Seiichi Nishiyama

DT Legal Japan, Attorney-at-law

Seiichi Nishiyama

Shin-Tokyo Building

3-3-1 Marunouchi, Chiyoda-ku



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Seiichi Nishiyama specializes in M&A transactions and general corporate law. He has represented Japanese and multinational companies, including chemical, manufacturing, technology, energy, and healthcare businesses, for domestic and international mergers and acquisitions, joint ventures, minority investments and business alliances. He has strong background in conducting detail-oriented and successful legal advice within the areas of international trade, fair trade and competition, securities regulations, listing regulations, finance transactions, solar power projects, commercial disputes, internal investigations, employment law, corporate governance, and corporate compliance.

Professional Experience
2013-2019      Jones Day, Tokyo
2015-2017      Seconded to ENEOS Corporation (formerly TonenGeneral Sekiyu K.K.)
2019-2020      Internship at Christie Digital Systems USA, Inc.
2020-Present DT Legal Japan

Professional Qualification
Dai-ni Tokyo Bar Association (2012)
New York State Bar (2020)

Hitotsubashi University (LL.B., 2009)
Hitotsubashi University Graduate School of Law (J.D., 2011)
University of Virginia School of Law (LL.M., 2019)

"Compliance training focusing on the Whistleblower Protection Act for a major automotive manufacturer" (June 29, 2023)

Japanese and English

Seiichi Nishiyama