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Théo Piazza's practice focuses on all aspects of French and international taxation, including transactional matters, capital markets, and litigation.

Théo advises companies, investment funds, and banking or financial institutions regarding the domestic or cross-border structuring of their M&A, private equity, and real estate transactions. He has experience in the fields of financial and derivative instruments as well as in litigation before tax authorities and French or international courts. Théo also works on venture capital financings, equity incentive schemes, and management packages.

Prior to joining Jones Day, Théo completed an internship at a major French law firm and worked for more than two years in the financial services department of an international tax law firm.


  • EcoVadis completes $500 million fundraising, becoming 27th French unicornJones Day advised EcoVadis, a leading global sustainability rating firm, in connection with its $500 million fundraising.
  • Armor sells stake in ARMOR-IIMAK to AstorgJones Day advised EN5, controlling shareholders of the Armor group, on the management buyout of Armor Iimak group and the simultaneous 40% investment by Astorg Midcap in the Armor Iimak group.
  • Adikteev acquires minority interest in TemprJones Day advised Adikteev in its acquisition of a minority interest in Tempr, a SaaS company that helps mobile advertisers realize the full potential of their user acquisition operations and maximize their returns.
  • Deezer merges with and into I2PO S.A.Jones Day is advising Deezer S.A. in the context of the proposed SPAC transaction whereby Deezer S.A. would be merged with and into I2PO S.A., a French SPAC listed on the professional segment of the regulated market of Euronext Paris and the related PIPE financing.
  • Adikteev bought out by managementJones Day advised Adikteev SA in the management buyout by Xavier Mariani and Emilien Eychenne as well as several other executives.
  • ACV acquires Monk SASJones Day advised ACV, who provides a leading digital marketplace for wholesale vehicle transactions and data services and is listed on Nasdaq, in connection with its acquisition of Monk, a leading French AI-powered imaging and vehicle inspection platform that automates vehicle damage detection.
  • Eight Roads leads $110 million Series B financing round of LeocareJones Day assisted Eight Roads as lead investor in the $110 million Series B financing round of Leocare, the first multiservice neo-insurance in France (home, car, motorcycle, and smartphone).