Guillermo Castañón

Guillermo Castañón



“You’ll never walk alone.”

The Kop, Anfield



Degree in Law and Diploma in Business Studies (E-1) at the Universidad Pontificia de Comillas (ICAI-ICADE) (specialising in Public Law) in 2011.



LL.M. Master’s degree in Corporate Legal Advice at the Instituto de Empresa in 2012.




Guillermo began his professional career in September 2012 at Ernst & Young Abogados (currently EY Abogados), participating in corporate restructuring projects, due diligence and advice on corporate law and corporate governance.

In 2016 he joined Despacho Jiménez de Parga where he continued advising clients from different sectors (multinationals, private equity and investment funds, energy companies, sports clubs, automotive, gyms, software developers, etc.) mainly in the areas of mergers and acquisitions, corporate law and financial law.

In 2019, as a result of the merger with Despacho Jiménez de Parga, he joined ECIJA Abogados continuing to advise on commercial, corporate and financial matters and incorporating clients from new sectors, mainly from the TMT sector (technology, media and telecommunications).

In 2020 he joined Mavens as a lawyer within the commercial law area.