Frank specialises in corporate crime and export controls. His experience includes advising on and litigating fraud, corruption and EU sanctions cases. Frank represents both potential suspects and victims. He also has experience conducting internal investigations and advising clients on compliance-related measures. Frank regularly publishes on subjects in his field.

  • Represented Fortenova Group, the largest food producer and retailer in South-Eastern Europe with an annual turnover of EUR 5 billion and 47.500 employees, in the implementation of a comprehensive restructuring resulting from the presence of sanctioned debt and equity holders in its capital structure and cross-border litigation in connection therewith.
  • Advised Castik Capital S.à r.l. regarding the acquisition of a majority stake in WATR Group, a market leader in groundwater management and (ground-)water purification from funds advised by Borromin Capital.
  • Advised Bridgepoint Advisers II Limited on its acquisition of the DataExpert group, a leading provider of products and services to combat cybercrime and fraud and deliver forensic and incident response solutions.
  • Law Firm School (cum laude)
  • LL.M. Criminal Law (cum laude) (Universiteit van Amsterdam)
  • LL.M. Commercial Legal Practice (cum laude) (Universiteit van Amsterdam)
  • LL.B. Law (cum laude) (Universiteit van Amsterdam)

Expertises

Investigations & Public Enforcement
Cases involving accusations of financial mismanagement, fraud, bribery, money laundering, corruption or violations of international sanctions seriously disrupt a client's operations and damage their reputation.
Corporate Crime
Cases involving accusations of financial mismanagement, fraud, bribery, money laundering, corruption or violations of international sanctions seriously disrupt a client's operations and damage their reputation.
Investigations & Public Enforcement
Cases involving accusations of financial mismanagement, fraud, bribery, money laundering, corruption or violations of international sanctions seriously disrupt a client's operations and damage their reputation.
Corporate Crime
Cases involving accusations of financial mismanagement, fraud, bribery, money laundering, corruption or violations of international sanctions seriously disrupt a client's operations and damage their reputation.

Up and Coming

Chambers Europe

White-Collar Crime & Corporate Investigations (2025 Edition)

"Frank Mattheijer is pleasant to work with and really hands-on."

Chambers Europe

White-Collar Crime & Corporate Investigations (2025 Edition)

"Frank Mattheijer is a very high-performing counsel."

Chambers Europe

White-Collar Crime & Corporate Investigations (2025 Edition)
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Publications

5 July 2024
5 July 2024
Niet-aansprakelijkheidsclausules in EU. Tijdschrift voor Sanctierecht & Onderneming.
2 June 2024
2 June 2024
Niederlandisches Gericht lost niederlandisches Unternehmen wegen Verstoben gegen EU-Sanktionen auf. ZASA.
27 May 2024
27 May 2024
Zorgplichten, ei van Columbus of zorgenkindje? TBS&H. (Dutch)
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