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CSL Seqirus

Under reviewAU
What it does

Makes seasonal and pandemic influenza vaccines, sold to governments, pharmacies and doctors, mainly in the US, UK and Europe.

Flu vaccinesHealth care

CSL Seqirus is CSL's influenza vaccines business, one of the world's largest flu vaccine makers.

Status
Under review
Expected
Deferred indefinitely
Parent
CSL (CSL AU)
Spin-off ticker
To be announced
Listing
ASX
Market
Australia
Sector
Health care

Terms

In August 2025 CSL announced a demerger of Seqirus as a separate ASX-listed company, targeted by the end of FY26. On 28 October 2025 it deferred the demerger indefinitely because of falling US flu vaccination rates, and said timing would be revisited when market conditions support it. As of August 2026 there was still no confirmed date, although the operational separation of Seqirus was due by 1 July 2026.

Key dates

  1. Demerger announced with FY25 results
  2. Demerger deferred indefinitely
  3. Operational separation target
  4. Demerger timing

Source documents

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