Guillermo Arribas Floria
Image of Guillermo Arribas Floria

Guillermo Arribas Floria

Senior Associate

Email

guillermo.arribasfloria@aoshearman.com

Phone

+32 2 780 2225

Offices

Brussels

V-CARD
Guillermo advises clients on a wide range of EU competition law matters.
His practice spans cross-border mergers and acquisitions, regulatory investigations, and compliance. Guillermo works with leading companies in sectors such as semiconductors, digital markets, electronics, and consumer goods. Before joining A&O Shearman in October 2025, he practiced in the competition department of another international firm.

Experience

Representative matters

  • Arm Limited and SoftBank Grop, the controlling shareholder of Arm, on its then-proposed $40 billion sale to NVIDIA Corporation*
  • Sprint Corp. And SoftBank Group, the controlling shareholder of Sprint, in the $59 billion merger of Sprint and T-Mobile US, Inc*
  • EU Cartel Investigation for multinational electronics company*
  • Follow-on Cartel Damages Actions for multinational electronics company*

*Previous firm experience

Qualifications

Admissions

Lawyer (“Abogado”), Spain, 2015

Avocat (E-List), Belgium, 2016

Academic

MA, European Law School, Maastricht University, The Netherlands, 2014-2015

BA, Law, University of Zaragoza, Spain, 2007-2013

Disclaimer
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.