La préparation d'une offre publique d'acquisition

Published: 10 October 2002

Depuis 1998, la loi fédérale sur les bourses et le commerce des valeurs mobilières offre un cadre légal aux offres publiques d'acquisitions (OPA) en Suisse. En assurant une plus grande égalité des armes entre offrants et sociétés visées en cas d'OPA, cette loi a contribué à changer les relations qui existaient jusqualors entre actionnaires et administrateurs de sociétés publiques dans notre pays. Cet ouvrage donne un apperçu des clauses les plus fréquemment utilisées dans les documents publiés lors d'une OPA. Destiné aux praticiens, il prend la forme d'un prospectus d'offre annoté. Il reproduit et commente des extraits de documents publiés lors de transactions passées, en les plaçant dans le contexte des dispositions légales pertinentes, ainsi que de la pratique développée par la COPA, la CFB, et le Tribunal fédéral. Il aborde aussi des questions stratégiques et tactiques, comme le choix des conditions de loffre et la coordination du calendrier de l'OPA et d'une éventuelle assenmblée générale de la société visé.

Related publications

SEE ALL

Insights

Insights – 21.11.2025

Third edition of the SBA Cloud Guidelines

Third edition of the SBA Cloud Guidelines

On 4 November 2025, the Swiss Bankers Association ("SBA") released the third edition of its Cloud Guidelines for banks and securities firms (the "Institutions"). The Guidelines are non-binding recommendations designed to help Institutions interpret and operationalise Swiss legal and supervisory requirements when procuring and using cloud services. They aim to transpose those requirements into proportionate, risk-based technical, organisational and contractual measures ("TOMs") that fit each Institution’s business and operating model.

Insights – 12.11.2025

Swiss sanctions against Russia – Further alignment with the EU – Implementation of the 18th Sanctions Package

Swiss sanctions against Russia – Further alignment with the EU –…

In a continued effort to align with European Union ("EU") sanctions, on 29 October 2025, the Swiss Federal Council implemented further measures transposing the core elements of the European Union's 18th sanctions package adopted on 18 July 2025. The new Swiss measures entered into force on 30 October 2025 and reinforce the existing framework through expanded trade restrictions, energy-sector prohibitions, transaction bans affecting Russian financial institutions and sovereign funds, as well as new software and service restrictions, while enhancing procedural shields against foreign proceedings for Swiss operators. For reference, the European Union has already moved to a 19th sanctions package, and certain elements of the 18th package adopted at EU level, such as the measures relating to some Chinese financial institutions, are not included in the present Swiss revision.
SEE ALL
Lenz & Staehelin {PAGENO}/{nbpg}
{PAGENO}/{nbpg}