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Henk Arnold Sijnja

He was able to efficiently maneuver us through a complex transaction, taking both parties by the arm and bringing the transaction to a satisfactory closing.
Client, Chambers Europe 2021

Henk Arnold Sijnja is a seasoned corporate lawyer, with over twenty years experience in advising corporations, businesses and institutions on domestic and cross border transactional matters. He has a particular focus on (cross-border) public and private M&A, equity capital markets transactions and securities law.

Henk Arnold's experience includes public takeovers, private M&A, equity offerings, IPOs, corporate restructurings and reorganizations. In addition, he advises (multinational) corporations on broader corporate strategy, including corporate governance and financial reporting. He has a particular focus on the financial and life sciences sectors, having advised financial institutions and life sciences companies on a wide range of transactional and advisory matters.

Henk Arnold regularly lectures at renowned institutions on corporate governance and directors' liability and is a non-executive director at Royal Smit Transformers B.V.

Professional QualificationsAdvocaat admitted with the Nederlandse Orde van Advocaten


Henk Arnold’s experience includes advising:

  • Hunter Douglas N.V., a Dutch listed industrials company, in relation to its delisting by means of the acquisition of Hunter Douglas by 3G Capital.
  • Belgian based R&D company Octinion on its joint venture with Priva, a high-tech company that develops hardware, software and services in the field of climate control, energy saving and optimal reuse of water.
  • Fondo Italiano per l’Efficienza Energetica (FIEE) on its funding of Corre Energy B.V., a Dutch based leading long duration energy storage (hydrogen) company.
  • Lion Tree LLC, financial adviser to Altice Europe N.V., in relation to Mr. Drahi's public offer for the outstanding shares of Altice Europe N.V..
  • Tioga Capital Partners on its investment in Dutch fintech company D2X Meltwater B.V., a leading global provider of media intelligence and social analytics Software as a Service solutions, on its IPO at Euronext Growth Oslo (EUR328m).
  • Elliott Advisors on the acquisition of a majority interest in Dutch car lease company Hiltermann.
  • Qargo Packers B.V. on the merger with Snoeck Services B.V., UniLash B.V. and H. van Veelen B.V., forming one of the largest industrial packaging companies in the Rotterdam port area.
  • TAE Life Sciences US LLC on cooperation and licensing transactions.
  • Dutch
  • English
  • Erasmus University Rotterdam, LLM, 1993

Awards and Recognitions

  • Ranked by Chambers Europe 2020. He is described by sources as "a very friendly guy" who also offers additional capital markets expertise.
  • Chambers Global 2019: He is valued for his ‘‘client service and practical guidance'’. Another interviewee highlights his ‘‘very good know-how, negotiation skills, availability, promptness and focus on the goal’’.


Giving a briefing through a webinar organised by the PLI Practising Law Institute on the attractiveness of Dutch entities as listed parent company of international groups, including a discussion of case studies on hostile takeovers and shareholders' activism


Henk Arnold lectures on directors' liability at the governance institute of the renowned Erasmus School of Accounting and Assurance.

Memberships And Affiliations

Member of the Board of Directors of the Juvenile Diabetes Research Fund in the Netherlands