Actelion - A global biopharmaceutical leader



Actelion Ltd

Actelion Pharmaceuticals Ltd

Corporate structure

Actelion Ltd is a public company and listed on the Swiss stock exchange (SIX)

Incorporated 17 December 1997

Founding team


Jean-Paul Clozel, Walter Fischli, Thomas Widmann, Martine Clozel, Andre Mueller

Head office





Actelion Ltd & Actelion Pharmaceuticals Ltd
Gewerbestrasse 16
4123 Allschwil, Switzerland
phone + 41 61 565 65 65
fax     + 41 61 565 65 00

Global presence


Actelion has subsidiaries with marketing and sales in more than 30 countries, covering all key pharmaceutical markets worldwide.



Total employees

Drug Discovery388
Clinical Development452
Marketing & Sales1,443
Support Functions341
December  2016