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Private company

Kosan Biosciences

American pharmaceuticals company based in Hayward, founded in 19951

Kosan Biosciences, Inc. (stock symbol: KOSN), was a pharmaceutical company which dealt with cancer therapeutics medications. The company was working on advancing two new classes of anticancer agents through clinical development: heat shock protein 90 (Hsp90) inhibitors and epothilones. Their technology platform was based on manipulation of the genetic instructions of microbes for making natural product polyketides.2 It is part of Bristol-Myers Squibb.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1995Founded1
  • HeadquartersHayward1

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Kosan Biosciences, Inc. (stock symbol: KOSN), was a pharmaceutical company which dealt with cancer therapeutics medications. The company was working on advancing two new classes of anticancer agents through clinical development: heat shock protein 90 (Hsp90) inhibitors and epothilones.2

Corporate structure

Kosan Biosciences is part of a group headed by Bristol-Myers Squibb. 143 entities, 51 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Bristol-Myers Squibb Princeton, New Jersey, United States
    • Bristol Myers Squibb (Belgium) Brussels, Belgium
    • Bristol Myers Squibb (Canada) Halifax, Nova Scotia, Canada
    • Bristol-Myers Squibb France Rueil-Malmaison, France
    • Kosan Biosciences Hayward
    • Bristol-Myers Squibb (Germany) Subsidiary · Munich, Germany
    • Bristol-Myers Squibb (India) Subsidiary · Mumbai, India
    • Bristol-Myers Squibb (Japan) Subsidiary · Tokyo, Japan
    • 1096271 BC ULC Subsidiary · Canada
    • 9643435 Canada Inc. Subsidiary · Canada
    • Abraxis BioScience Australia Pty Ltd. Subsidiary · Australia
    • BMS FOREX COMPANY Subsidiary · Wilmington, Delaware, United States
    • BMS Holdings Netherlands Beta B.V. Subsidiary · Netherlands
    • BMS Ireland Capital Funding Designated Activity Company Subsidiary · Ireland
    • BMS Netherlands Operations B.V. Subsidiary · Netherlands
    • BMS Pharmaceutical Korea Limited Subsidiary · South Korea
    • BMS Pharmaceuticals Germany Holdings B.V. Subsidiary · Netherlands
    • BMS Pharmaceuticals International Holdings Netherlands B.V. Subsidiary · Netherlands
    • BMS Pharmaceuticals Korea Holdings B.V. Subsidiary · Netherlands
    • BMS Pharmaceuticals Mexico Holdings B.V. Subsidiary · Netherlands
    • BMS Pharmaceuticals Netherlands Holdings B.V. Subsidiary · Netherlands
    • BMS STRATEGIC PORTFOLIO INVESTMENTS HOLDINGS, INC. Subsidiary · Wilmington, Delaware, United States
    • Bristol Myers Squibb Regional Headquarter Company Subsidiary · Saudi Arabia
    • BRISTOL MYERS SQUIBB S.A. Subsidiary · Madrid, Spain
    • Bristol-Myers (Private) Limited Subsidiary · Zimbabwe
    • BRISTOL-MYERS K.K. Subsidiary · Shinjuku Ku, Japan
    • and 117 more

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.

Leadership

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

Board members and other officers (1)

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1995Founded Founded1

Sources

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

  1. 1
  2. 2