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Jones Day

Thomas De Muynck

Work +32 2 645 14 11
Jones Day

Work Department

Mergers & Acquisitions; JV & Strategic Alliances; Antitrust Civil Investigations & Litigation


Thomas De Muynck, Partner, focuses on M&A transactions and joint ventures. He represents EU, U.S., and Japanese companies in corporate, commercial, and other matters in Europe and Japan. He has been with Jones Day since 1999 and has worked in the Firm's Brussels, Tokyo, and New York offices. Having lived and worked in Japan for more than three years, Thomas has developed a particular focus on representing Japanese clients in cross-border transactional and compliance matters. He has been involved in projects for Toyota, including JVs in Europe and South America, and multiple EU acquisitions for Bridgestone Corporation and Sumitomo Bakelite. Other Japanese clients include Hino Motors, Konica-Minolta, Pioneer, and Zeon Corporation. Major U.S. clients Thomas has represented on M&A and commercial matters include Diebold, Lubrizol, MasterCard, PepsiCo, The Riverside Company, Textron, and WL Ross & Co. He has advised EU clients such as BNP Paribas, Lagardere Services, and Total and Belgian companies including BASE, RHJI, and Van Hool. In the venture capital sector, Thomas has recently advised Alven Capital Partners, Inside Secure SA, and XAnge Private Equity on equity investments in Belgium. Thomas is a member of the Legal & Tax Committee of the Belgium-Japan Association.


Thomas De Muynck has been a lawyer at Jones Day since 1999 and a partner since January 2010.


English, Dutch, French, German, Japanese.


Brussels Bar, New York State Bar.


Columbia University (LL.M. 2002; Harlan Fiske Stone Scholar); University of Leuven, Belgium (J.D. magna cum laude 1998); Göttingen University, Germany (1997).


Commercial, corporate and M&A

Within: Commercial, corporate and M&A

Jones Day’s team ‘excels in advice and delivery of service, and maintains constant good spirits even when under stress and tight timelines’. The Brussels office has developed a specialised Japan practice; recent highlights include advising Astellas Pharma on the €800m acquisition of Belgian company Ogeda, which was the largest published M&A transaction in Belgium in the first half of 2017. The team also has a burgeoning venture capital practice under the leadership of Thomas De Muynck. Capital markets and company law specialist Matthieu Duplat joined from White & Case LLP in 2016. Howard Liebman is also noted.

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Jones Day

  • US rules regarding offshore accounts

    The Hiring Incentives to Restore Employment Act 2010, enacted on 18 March 2010, imposes a new US withholding tax and reporting regime, known as the Foreign Account Tax Compliance Act (FATCA). The FATCA regime applies generally to payments made after 31 December 2012, except on obligations (to be defined in future guidance) outstanding on 18 March 2012. Substantial effort is required by foreign entities to bring their worldwide operations and policies into compliance with the FATCA rules as of the effective date.

    - Jones Day

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