INDIVIDUAL PROFILE
Mathieu Ex

Mathieu Ex

High Net Worth 2026

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Deloitte Legal - Lawyers
 Deloitte Legal - Lawyers

Ranked in 1 practice area

Private Wealth Law

Belgium

11 years ranked

About

Provided by Deloitte Legal - Lawyers

High Net Worth

Practice Areas

Mathieu Ex has been the Practice Head of The Greenille Private Client Team since 2017. He first joined Greenille in 2011 as partner. The team comprises over 30 lawyers and experts, working for high net worth individuals and entrepreneurial families. Though all have their own focus, tax and legal advisory, family and business dynamics and/or conflict handling, the team offers integrated and holistic services.

Mathieu advises and helps families protect, structure and manage wealth and businesses. His particular centre of interest lies in the structuring of private (art) collections, yachts and charitable giving.

Career

Previously Private Leader for Deloitte Legal, he is currently the T&L Private Leader.

Professional Memberships

Mathieu is a member of the Society of Estate and Trust Practitioners (STEP Benelux), the International Fiscal Association (IFA) and the Belgian Association of Tax lawyers (BATL). He has consistently been ranked in the Chambers High Net Worth annual guide.

Languages Spoken

He is fluent in Dutch, French and English.

Chambers Review

Provided by Chambers

Chambers High Net Worth

Private Wealth Law - Belgium

Band 1
Individual Editorial
Mathieu Ex is valued for his experience assisting high net worth individuals and family business owners with complex tax planning issues, and he has an excellent reputation among interviewees for his client-handling skills.
Learn more about this teamView ranking table

Strengths

Provided by Chambers

  • I very much appreciated Mathieu's specialist advice, comprehensive approach, forward-looking attitude and personal commitment throughout the process. He flags pitfalls, but more importantly also identifies and creates opportunities to thrive. His expertise also comes with a highly enjoyable portion of human interaction and involvement.

    Private Wealth LawChambers High Net Worth

  • Mathieu Ex gives excellent cooperation, clear communication and good execution.

    Private Wealth LawChambers High Net Worth

Ranked Individuals at Deloitte Legal - Lawyers (4)

Belgium

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