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Private company

Siam Bioscience

Thai drug manufacturer

Siam Bioscience Company, Ltd. (Thai: สยามไบโอไซเอนซ์) is a Thai drug manufacturer, owned by King Vajiralongkorn.2 It was founded by Bhumibol Adulyadej.1 It is part of Privy Purse Bureau.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Aug 17, 2009Founded1

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Siam Bioscience Company, Ltd. (Thai: สยามไบโอไซเอนซ์) is a Thai drug manufacturer, owned by King Vajiralongkorn.2

Corporate structure

Siam Bioscience is part of a group headed by Privy Purse Bureau. 4 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Privy Purse Bureau Bangkok
    • Siam Bioscience Bangkok
    • Siam Cement Subsidiary · Bangkok
    • Siam Commercial Bank Subsidiary · Bangkok
    • Sala Chalermkrung Royal Theatre Owned · Wang Burapha Phirom, Thailand
    • Siam Paragon Owned · Pathum Wan Subdistrict, Thailand

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Bhumibol Adulyadej on Aug 17, 2009.1

Leadership

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

Products and brands

  • biological products

Listed on Wikidata.1

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. Aug 17, 2009Founded Founded1

Sources

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

  1. 1
  2. 2