Actelion Pharmaceuticals Ltd (VTX:ATLN) Actelion To Host Actelion Day On 19 February 2009

Actelion Pharmaceuticals Ltd (VTX:ATLN) Corporate news announcement processed and transmitted by Hugin AS. The issuer is solely responsible for the content of this announcement. ---------------------------------------------------------------------- --------------



Dear member of the investment community

Actelion Ltd will announce the financial full year 2008 results on Thursday, 19 February 2009, at 07.00 CET / 01.00 EST / 06.00 GMT.

The same day, the company hosts Actelion Day 2009. This event will be a combination of Actelion's annual Media and Analyst Conference (M&A Day) and its Research and Development Day (R&D Day).

The event will be available via webcast, however, questions will be restricted to audience members only.

For those of you who have not received a personalized invitation as a buy- or sell-side analyst and wishing to attend the event in person, we kindly ask to send an e-mail to investor.relations@actelion.com. Please note that space is limited.

Actelion will host an Investor Conference Call / Webcast as follows:

Date/Time:

19 February 2009 12.30 hrs - 16.30 hrs Basel (CEST) 11.30 hrs - 15.30 hrs U.K. (BST) 06.30 a.m. - 10.30 a.m. U.S. (EDT)

Conference Call Connect #: Dial-in participants should start calling the number below 10-15 minutes before the Conference is due to start.

Dial: Europe: +41 44 580 64 03 U.K.: +44 207 153 91 54 U.S.: +1 866 928 60 44

Participant's mode: Listen-Only. Questions will be restricted to audience members only.

Webcast Access: Webcast participants should visit the Actelion website for further details http://www.actelion.com/ 10-15 minutes before the conference is due to start.

Participant's mode: Listen-Only. Questions will be restricted to audience members only.

Webcast Replay: The archived Investor Webcast will be available for replay through http://www.actelion.com/ approximately 60 minutes after the call has ended.

For further information please contact: Actelion Pharmaceuticals Ltd, Gewerbestrasse 16, CH-4123 Allschwil Roland Haefeli Vice President, Head of Investor Relations & Public Affairs +41 61 565 62 62 +1 650 624 69 36 http://www.actelion.com

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Actelion Pharmaceuticals Ltd Gewerbestrasse 16 Allschwil Switzerland

WKN: 936767; ISIN: CH0010532478; Index: SBIOM, SLIFE, SMCI, SMIEXP, SMIM, SPI, SPIEX; Listed: Main Market in SIX Swiss Exchange;



LINK: http://hugin.info/131801/R/1284612/287837.pdf

Actelion Pharmaceuticals Ltd

http://www.actelion.com

ISIN: CH0010532478

Stock Identifier: XSWX.ATLN

US: OTC:ALIOF