The paper outlines open issues concerning corporate mobility from the position of both private international law rules and the relevant Community law rules. For the latter, the most important is the fundamental freedom of Community law, i.e. the freedom of establishment. It is the authors’ opinion that for the complete attainment of freedom of establishment it is necessary not only to enable companies to undertake their business activities wherever they want, but also to enable them to transfer their company seat between Member States. That is if such company seat transfer corresponds to company’s business interests and does not lead to abuse of Community given rights. Regardless of diverse positions concerning the actual state of freedom of establishment, that is whether freedom of establishment already fully enables companies to transfer their seat between Member States or not, in order to ensure legal certainty it would be very useful to provide a specific Community level legal instrument that would enable cross-border seat transfer between Member States in a uniform manner. To that end it would be appropriate to continue work on the abandoned 14th Company Law Directive on the Transfer of the Registered Office or De Facto Head Office of a Company from one Member State to Another.U radu se daju temeljne naznake otvorenih pitanja mobilnosti trgovačkih društava, kako s aspekta pravila međunarodnog privatnog prava, a tako i uvažavajući pravila prava EU. Za potonje je najvažnije pravo na ostvarivanje poslovnog nastana, kao dio primarnog prava EU. Mišljenje je autora da je za puno ostvarivanje prava poslovnog nastana prijeko potrebno da društva mogu ne samo obavljati svoju djelatnost gdje god žele, nego i promijenjati svoje sjedište , ako to odgovara potrebama njihovoga poslovanja, naravno pod uvjetom da to znači korištenje sloboda ustanovljenih pravom EU, a ne da znači zlouporabu tih sloboda. Ma kakav god stav da se zauzme o aktualnom stanju prava EU po tome pitanju, odnosno da li ono omogućava punu realizaciju prava poslovnog nastana ili ne, čini se da bi bilo vrlo korisno radi pravne sigurnosti da se donese poseban pravni instrument, koji bi uredio mogućnost promjene sjedišta društva iz jedne države članice u drugu. U tome bi smislu bilo potrebno nastaviti prekinuti rad na 14. direktivi prava društava o prijenosu registriranoga sjedišta
