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Private company

Sigma-Tau

Italian pharmaceutical company

Leadiant Biosciences, formerly known as Sigma-Tau Industrie Farmaceutiche Riunite, was founded in 1957 by research chemist Claudio Cavazza. In 2018 Leadiant Biosciences came under fire for creating a monopoly for CDCA and unnecessarily increasing the price by a factor of 335.2 It ceased to exist in 2017.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1957Founded1

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Leadiant Biosciences, formerly known as Sigma-Tau Industrie Farmaceutiche Riunite, was founded in 1957 by research chemist Claudio Cavazza.2

Corporate structure

Sigma-Tau sits at the top of its group. 2 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

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 Claudio Cavazza in 1957.1

Leadership

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

Products and brands

  • medication

Listed on Wikidata.1

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Timeline

  1. 2017Dissolved Dissolved1
  2. 1957Founded Founded1

Sources

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

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