Aquí lo tenéis, artículo 120 del Federal Act on Financial Market Infrastructures and Market Conduct in Securities and Derivatives Trading
Chapter 3
Disclosure of Shareholdings
Art. 120
Notification duty
1 Anyone who directly or indirectly or acting in concert with third parties acquires or disposes of shares or acquisition or sale rights relating to shares of a company with its registered office in Switzerland whose equity securities are listed in whole or in part in Switzerland, or of a company with its registered office abroad whose equity securities are mainly listed in whole or in part in Switzerland, and thereby reaches, falls below or exceeds the thresholds of 3%, 5%, 10%, 15%, 20%, 25%, 33⅓%, 50% or 66⅔ % of the voting rights, whether exercisable or not, must notify this to thecompany and to the stock exchanges on which the equity securities are listed."
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