Actelion -- Invitation to Investor Conference Call / Webcast

Actelion to Discuss Financial First Quarter Results 2004; Actelion Top Management to Host Q & A Session


ALLSCHWIL, Switzerland, April 23, 2004 (PRIMEZONE) -- Actelion Ltd. (SWX:ATLN): Dear Friend in the Investment Community:

Actelion Ltd. will announce the results of the first quarter 2004 on Tuesday, 27 April 2004, 07.00 CET / 06.00 UK time / 01.00 a.m. EST.

To discuss the results, Actelion will host an Investor Conference Call / Webcast as follows:

Date/Time: Tuesday, 27 April 2004, 15.30hrs (CET) / 14.30hrs (UK time) / 09.30 a.m. (EST)

Conference Call Connect #:

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

European participants should dial +41 (0)91 610 56 00 U.S. participants should dial +1 (1)866 291 4166 U.K. participants should dial +44 (0)207 107 06 11

Participant's mode:

Listen-Only with possibility to open individual lines during Q&A session.

Participants will be asked for their Name and Company.

Webcast Access:

Webcast participants should visit the Actelion Website www.actelion.com for further details 10-15 minutes before the conference is due to start.

Participant's mode:

Listen-Only with possibility to ask individual questions by clicking on the Q&A button. E-mail questions will be answered after the call itself is over. Participants will be asked to provide their Name and Company.

Webcast Replay:

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



            

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