http://www.swx.com/admission/disclosure_shabdb_en.html
According to Art. 18 and 19 of the Stock Exchange Ordinance-FBC, listed companies are required to publish any disclosure reports they have received concerning material changes in ownership of its shares no later than two trading days. Such information must be published in at least one major electronic media publishing stock market information as well as in the Swiss Commercial Gazette. The time when the information is transmitted to the electronic media is the determining factor for compliance with the time limit. The Disclosure Office is a department within the Issuers Division of SWX Swiss Exchange and is supervised directly by the Swiss Federal Banking Commission. It was created in connection with the introduction of the obligation to disclose shareholdings above certain thresholds (5, 10, 20, 33 1/3, 50 and 66 2/3%) in Swiss listed companies pursuant to Art. 20 of the Stock Exchange Act. The task of the Disclosure Office is to receive such notifications of shareholdings, grant exemptions or relief from the obligations to notify or to publish and render preliminary decisions on whether a duty to notify exists or not.