- Grotius: Financing and Securities
- Radboud University Nijmegen: Dual Master in Business and Law
- University of Groningen: Bachelor of Dutch Law
- University of Groningen: Bachelor of International and European Law
Niels Hagelstein has registered the following principal (and secondary) legal practice areas in the Netherlands Bar’s register of legal practice areas (rechtsgebiedenregister):
Based on this registration, Niels is required to obtain ten training credits per calendar year in each registered principal legal practice area in accordance with the standards set by the Netherlands Bar.