Biography

Mathias Siems has been Professor of Private Law and Market Regulation at the EUI since January 2019. He previously taught at Durham University, the University of East Anglia, the University of Edinburgh and the Riga Graduate School of Law. He was also a Fulbright Scholar at Harvard Law School and a Jean Monnet Fellow at the EUI. He is a graduate of the universities of Munich and Edinburgh.

Research projects, clusters and working groups

Ongoing

• Justice-in-context: social practices, local realities, and the everyday work of judicial independence in Europe
• Finance and society
• Finance, Innovation and Business Regulation Working Group

Completed

• Decentering Eurocentrism
• Technological change and society
• Digital transformations and society

Supervisees

• Arianna Abitante
• Dorota Nowacka
• Elena Calsamiglia
• Fouad Saleh
• Fragkiskos Tsiros
• Klaudia Sałdan
• Michael Widdowson
• Pedro José Mercado Jaén
• Tzanis Tragakis

Fields of expertise

Recent research output

• SIEMS, Mathias; SCHNYDER, Gerhard (2026), Can ordoliberalism save the world? : CSR/ESG law and its discontents, Article
• SIEMS, Mathias (2026), Legal transplants : an interdisciplinary approach, Book
• DWORNICZAK, Dominik; NOWACKA, Dorota; PAULESU, Carolina; SIEMS, Mathias; UCARER, Onur Can (2025), The notion of legal transplants beyond the Anglosphere : decentring the debate, Article
• SIEMS, Mathias (2025), The European advantage in empirical comparative law, Article
• SIEMS, Mathias (2025), Taxonomies and leximetrics, Contribution to book
• DE WITTE, Folker Andries; KRISZTIÁN, Anna; KUKAVICA, Jaka; POTOCKA-SIONEK, Nastazja; SIEMS, Mathias; YIATROU, Vasiliki (2024), Decoding judicial cross-citations : how do European judges engage with foreign case law?, Article