Private company

Actelion

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons3

Swiss biopharmaceutical company

Actelion Pharmaceuticals Ltd. is a pharmaceuticals and biotechnology company established in December 1997, headquartered in Allschwil near Basel, Switzerland. The company is part of Johnson & Johnson Innovative Medicine business segment. Actelion focuses on the manufacture of drugs that treat rare and orphan diseases.2 It was founded by Jean-Paul Clozel.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1997Founded1
  • Industrypharmaceutical industry1
  • HeadquartersAllschwil1
  • Founded inAllschwil1
  • Websitewww.actelion.com
  • Legal formAktiengesellschaft1
Actelion Allschwil
Photo: Ingenieurlösungen, CC BY-SA 3.0, via Wikimedia Commons5

Actelion Pharmaceuticals Ltd. is a pharmaceuticals and biotechnology company established in December 1997, headquartered in Allschwil near Basel, Switzerland. The company is part of Johnson & Johnson Innovative Medicine business segment.2

Corporate structure

Actelion is part of a group headed by Johnson & Johnson. 460 entities, 73 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

Founded by Jean-Paul Clozel in 1997, in Allschwil.1

Actelion was founded in 1997 by husband and wife team Jean-Paul and Martine Clozel together with three colleagues after F. Hoffmann-La Roche cut their funding for Martine's cardiovascular program. They founded Actelion to work on a drugs for rare diseases and retained the rights to the intellectual property from Roche, including the molecule leading to the development of Tracleer, a drug for treating pulmonary arterial hypertension (PAH) which became a billion dollar seller.

From Wikipedia’s article on Actelion, shared under CC BY-SA 4.0.4

Leadership

Who has led Actelion, and when. Pick a name to see everywhere that person has worked.

Subsidiaries and ownership

Parent company

Subsidiaries

From Wikidata.1

Acquisitions

CoTherix

CoTherix was a biopharmaceutical company located in South San Francisco, California. CoTherix focused on licensing, developing, and commercializing therapeutic products for the treatment of cardiopulmonary and other chronic diseases. The company, formerly known as Exhale Therapeutics, Inc., was founded in February 2000 by Gerard Turino, MD, a past president of the American Thoracic Society, and Jerome Cantor, MD, a pulmonary pathologist.

CoTherix's commercial product was "Ventavis (Iloprost)", an inhaled therapy for pulmonary artery hypertension (PAH). It was approved by the United States Food and Drug Administration in December 2004, two months after the company's initial public offering of 5 million shares of common stock.

Fasudil, Tracleer, Asahi and Actelion

Asahi developed fasudil and entered into a licensing and development agreement with CoTherix in July 2006 to pursue regulatory approval and commercialization in the United States and Europe based on their prior track record in this area. In November 2006, CoTherix and Actelion signed a merger plan, which was subsequently announced publicly; this followed the initiation of negotiations in August 2006. In January 2007, Actelion completed acquisition of all CoTherix stock, and summarily informed Asahi that work on fasudil would be terminated. Now, Actelion had a competitor blockbuster drug on the market, bosentan (Tracleer). Asashi claimed that Actelion's acquisition of CoTherix was directly aimed at removing fasudil as a competitor therapeutic, which it effectively did. Asahi pursued damages against CoTherix and Actelion initially through arbitration of a breach of contract claim, which netted them US$91 million, then in a jury trial, which resulted in an award of US$580 million in compensatory and punitive damages. This case has served as an exemplar of the notion that a company's contractual obligations persist after that company's acquisition.

Read the full text

On 20 November 2006, CoTherix agreed to be purchased for $420 million in cash by Actelion of Basel, Switzerland. On 9 January 2007, the deal closed with Actelion paying $13.50 for each share of CoTherix stock.

From Wikipedia’s article on Actelion, shared under CC BY-SA 4.0.4

Timeline

  1. 1997Founded Founded in Allschwil1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5