Marieke Wyckaert is a part-time professor at the Jan Ronse Institute for Corporate and Financial Law and teaches European and Belgian company law Until 2021, she was also active as an attorney in these domains.

Marieke obtained her doctorate degree in 1994 with a study of capital and capital formation in public and private companies. Together with Koen Geens, she edited the volume on company law in the series Principles of Belgian Private Law (2011), and since 2012 she has been co-author of the overviews of company law case law in the Tijdschrift voor Privaatrecht. 

Marieke was one of the four experts appointed by Minister of Justice Koen Geens who designed and wrote the Code of Companies and Associations (2019). 
In recent years, her research has mainly focused on governance structures (composition and functioning of the board of directors,  agency conflicts, dual regimes, conflicts of interest) and the role of company and association law in the context of national, global and European developments and challenges. In her capacity as chair (since 2019) of the Belgian Centre for Company Law (BCV), which she co-founded in 2014, she regularly provides support, alone or with colleagues, to various branches of the legislature. She is also vice-chair of the Adviescomité inzake vennootschappen en verenigingen (CASAVV), a private advisory committee set up by FedNot (the Belgian Federation of notaries) and the BCV.

She has been a member of the editorial board of the Tijdschrift voor Rechtspersoon en Vennootschap / Revue pratique des sociétés since 1988, was a member of the Supervisory Board of the FSMA between 2011 and 2017 and has been a member of the Sanctions Committee of the National Bank of Belgium since 2022. From 2025, she will also be a director of the non-profit organisation ICCI, the study and documentation center of the Institute for Company Auditors (IBR/IRE).