Insights

Global capacity CSL Seqirus operates manufacturing plants in the United States, United Kingdom, Germany and Australia, providing a transcontinental footprint and substantial capacity to support reliable vaccine supply across multiple markets and align with pandemic preparedness programs.

Vaccine Innovation The company is advancing cell-based and adjuvanted influenza vaccines and exploring avian influenza and RNA-based approaches, presenting opportunities to partner on next generation vaccines, stockpiling programs and payer value propositions.

Public Partnerships Recent collaborations with government health agencies and ongoing pandemic preparedness initiatives indicate established procurement channels for tenders and stockpiling programs, offering pathways to large, long-term vaccine supply agreements.

Market Position As a leading influenza vaccine player with a broad geographic footprint and a portfolio that includes vaccines of national significance, CSL Seqirus is well positioned to expand adoption through regional immunization programs and strategic partnerships.

Commercial Readiness A data driven value proposition supported by clinical and economic studies can enhance market access and payer engagement, creating opportunities to accelerate uptake in both public sector programs and private markets as demand for influenza vaccines grows.

CSL Seqirus Tech Stack

CSL Seqirus uses 8 technology products and services including Open Graph, OneTrust, Babel, and more. Explore CSL Seqirus's tech stack below.

  • Open Graph
    Content Management System
  • OneTrust
    Cookie Compliance
  • Babel
    Development
  • Video.js
    Javascript Libraries
  • core-js
    Javascript Libraries
  • jQuery
    Javascript Libraries
  • HSTS
    Security
  • Google Tag Manager
    Tag Management

CSL Seqirus's Email Address Formats

CSL Seqirus uses at least 2 format(s):
CSL Seqirus Email FormatsExamplePercentage
First.Last@seqirus.comJohn.Doe@seqirus.com
98%
First.Middle@seqirus.comJohn.Michael@seqirus.com
1%
Last_First@seqirus.comDoe_John@seqirus.com
1%

Frequently Asked Questions

Where is CSL Seqirus's headquarters located?

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CSL Seqirus's main headquarters is located at 29 Market Street Maidenhead, England sl6 8aa United Kingdom. The company has employees across 5 continents, including EuropeNorth AmericaOceania.

What is CSL Seqirus's official website and social media links?

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CSL Seqirus's official website is cslseqirus.com and has social profiles on LinkedIn.

What is CSL Seqirus's NAICS code?

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CSL Seqirus's NAICS code is 3254 - Pharmaceutical and Medicine Manufacturing.

How many employees does CSL Seqirus have currently?

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As of December 2025, CSL Seqirus has approximately 2.7K employees across 5 continents, including EuropeNorth AmericaOceania. Key team members include Vice President & Head Of Medical Affairs, Csl Seqirus: J. A.Vp Head Global Regulatory Affairs And Pharmacovigliance: S. C.Vice President Operations And Site Head Holly Springs: J. A.. Explore CSL Seqirus's employee directory with LeadIQ.

What industry does CSL Seqirus belong to?

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CSL Seqirus operates in the Pharmaceutical Manufacturing industry.

What technology does CSL Seqirus use?

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CSL Seqirus's tech stack includes Open GraphOneTrustBabelVideo.jscore-jsjQueryHSTSGoogle Tag Manager.

What is CSL Seqirus's email format?

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CSL Seqirus's email format typically follows the pattern of First.Last@seqirus.com. Find more CSL Seqirus email formats with LeadIQ.

When was CSL Seqirus founded?

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CSL Seqirus was founded in 1916.

CSL Seqirus

Pharmaceutical ManufacturingEngland, United Kingdom1001-5000 Employees

CSL Seqirus is a pharmaceutical manufacturing company formed in 2015 through the merger of bioCSL and the influenza vaccines business formerly owned by Novartis. As a CSL business unit, it ranks among the world's leading producers of influenza vaccines, with manufacturing sites in the United States, the United Kingdom, Germany, and Australia. It is a major component of CSL's global operations and is described as the second-largest influenza vaccine company worldwide, with a footprint that spans more than 20 countries and a sizable, multinational workforce.

Based in Maidenhead, England, CSL Seqirus markets vaccines and specialty pharmaceutical products in Australia and New Zealand and manufactures antivenoms and Q fever vaccines for national programs. The company positions itself as a global partner in pandemic preparedness and influenza control, supported by extensive research and production capabilities across its sites. In 2023, it published data from three studies examining the clinical, public health, and economic value of cell-based and adjuvanted seasonal influenza vaccines.

Section iconCompany Overview

Headquarters
29 Market Street Maidenhead, England sl6 8aa United Kingdom
NAICS Code
3254 - Pharmaceutical and Medicine Manufacturing
Founded
1916
Employees
1001-5000

Section iconFunding & Financials

  • $25M$50M

    CSL Seqirus's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    CSL Seqirus's revenue is estimated to be in the range of $25M$50M

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