Profile
Tomás Arranz has been a partner in the Competition and European Union Law Practice since 2021. He previously worked in the firm’s Brussels office and completed an international secondment in Amsterdam.
Tomás has extensive experience in merger control proceedings, including complex cases involving the negotiation of commitments before both the Spanish and European competition authorities. He frequently coordinates merger notifications across multiple jurisdictions. Moreover, he also represents clients in cartel investigations (including leniency applications), abuse of dominance cases, gun-jumping matters, and other proceedings concerning restrictive agreements. Additionally, he advises on damages actions, particularly follow-on claims arising from competition law infringements.
He provides strategic and preventive advice on the application of competition rules, including the design of compliance programmes and the drafting and negotiation of commercial agreements. Tomás has also provided advice on issues related to public procurement exclusions resulting from competition law infringements.
He acts for leading companies in a wide array of sectors such as financial services, insurance, pharmaceuticals, consumer goods, digital, energy, real estate, and distribution.
Tomás is recognised by leading legal directories including Chambers & Partners, The Legal 500, and Lexology. In 2018, Who’s Who Legal and Global Competition Review included him in their Competition – Future Leaders guide as one of Europe’s leading competition law specialists under the age of 45.
Education
- Law Degree, Universidad Autónoma de Madrid, 2011
- Business Administration Degree, Universidad Autónoma de Madrid, 2011
- Postgraduate Diploma in European Union competition law, King’s College, London, 2014
Professional associations
- Madrid Bar Association
- Spanish Association for the Defence of Competition (AEDC)
Teaching activity
Tomás is the academic director of the Master’s Degree in International Legal Practice at the Instituto Superior de Derecho y Economía (ISDE), where he also lectures on competition law.
He is part of the faculty of the Master in Law of Regulated Markets, the Master in Legal Practice and the Program of Expert in Competition Law of the Carlos III University of Madrid, and also lectures in the Master in Energy Finance of the Spanish Energy Club and in the Program of Specialisation in Competition Law of the IEB.
He also participates as a speaker on competition law matters in conferences and seminars.
