Stefano brings together his specialised knowledge of taxation with a strategic vision for the development of business, qualities thanks to which he advises clients in their growth plans and has consolidated the Italian tax advisory team.

He is Head of the Italian Tax team and a chartered accountant, whose focus lies on corporate and tax matters, for medium-sized Italian businesses.

He assists international clients on M&A transactions, ensuring the tax and business efficiency of the structure of their investments. He also advises Italian clients in their plans for international development and expansion. His work also include tax litigation matters.

During his professional career, Stefano has been senior partner at EY law firm, overseeing development of the middle market in two of the most industrialised areas in the Northeast of Italy.

We have worked with Osborne Clarke Italy for a long time and in particular with Stefano Guerreschi and his team: we are very satisfied with both the professional skills demonstrated and the completeness and timeliness of advice provided.

Feralpi Holding S.p.A.

Helping you succeed in tomorrow's world

Technical evolution and changes in social interactions are a constant part of man’s history and now, with fast-paced transformations all around, we need to ask ourselves what the new normal will be. Our reply – to the digitalisation, decarbonisation, and urban dynamics transformation drivers – must be multidisciplinary and multi-jurisdictional and in this the role of taxation and tax planning acquires an increasingly important position. Our tax team represents a strategic opportunity for the development of our clients’ businesses.



Advised in the ambit of litigation with the tax authorities relating to an assessment of intercompany costs for management services.

Botti & Ferrari

Advised the client, a leader in Italy in IP consultancy services, on the valuation of intangibles.

Conceria Pasubio S.p.A

Assistance in the acquisition of the German tannery, Hewa Leder GmbH.

Conceria Pasubio S.p.A

Tax assistance in relation to a call-off stock agreement with an EU automotive tier-1 supplier.

Stellantis Group

Tax assistance in relation to green tax credits associated with the purchase of charging stations (wall box) for electric vehicles.

Conceria Pasubio S.p.A

Advised on the acquisition of the controlling majority in GD (Mex) and GDI (USA), a US-Mexican group of companies specialized in the cutting and upholstering of the wheels for the automotive segment.


Advised the client, a global leader in the production of fluorinated and technical polymers, on its sale to Daikin Industries Ltd of its entire share capital.

Hager Group

Advised on the operation that led to the overall reorganization of the European companies of the Hager Group - overall transaction value €25m. Dealt with both corporate and tax issues involved in the operation

Grifols Italia

Advised in the merger by incorporation of Alpha Therapeutic Italia S.p.A. The deal was the fruit of a complete review of the holding company's strategy in Italy.


Advised the Italian Group in the restructuring of its USA subsidiary.

Grifols Italia

Tax advice in the Italian phase implementing the acquisition of the diagnostics unit from Novartis.


Tax advice and assistance in tax litigation in relation to questions of transfer pricing.


Ongoing tax advice to the Italian Group, leader in the steel industry.