Key Highlights

  • CSL was notified late on Wednesday 21 October 2026 that a group proceeding naming it as defendant had been filed in the Supreme Court of Victoria.
  • The proceeding covers persons who acquired an interest in certain CSL securities between 11 February 2025 and 11 May 2026, inclusive.
  • The allegations concern continuous disclosure obligations and representations about medium-term performance and expected FY26 revenue and net profit.
  • CSL states that it has complied with its disclosure obligations at all times, denies any liability and will defend the proceeding.

CSL Limited (ASX:CSL) has advised the market that a group proceeding has been filed against it in the Supreme Court of Victoria. The Melbourne-based company, whose securities are also quoted in the United States over the counter under the code CSLLY, made the disclosure on 22 October 2026, the day after it received notice of the filing.

According to the statement, CSL was notified late in the afternoon of Wednesday 21 October 2026 that the proceeding had been lodged, and that it names CSL as the defendant. The announcement is brief and sets out the basic features of the claim, the period it covers, the categories of allegation and the company's stated response.

Who the Proceeding Covers and for What Period

The proceeding is brought on behalf of persons who acquired an interest in certain CSL securities within a defined window. That window opens on 11 February 2025 and closes on 11 May 2026, and both dates are included. The period therefore spans fifteen months, from mid-February 2025 to mid-May 2026.

A group proceeding is a representative action in which one party sues on behalf of a wider group of people who share a common type of claim. In this case the group is defined by the acquisition of an interest in certain CSL securities during the stated window. The announcement does not identify the plaintiff, the amount of any claim or the specific securities involved beyond the description of certain CSL securities. It also does not give a hearing date or describe any procedural steps that have been taken since the filing, and these details are not included in the company's statement.

The Allegations Described by CSL

CSL says the proceeding includes allegations that it breached relevant provisions of several legal and regulatory instruments. These are the Corporations Act 2001 (Cth), the Australian Securities and Investments Commission Act 2001 (Cth), the Australian Consumer Law and the ASX Listing Rules.

The statement says the allegations include matters relating to the company's continuous disclosure obligations. They also relate to representations allegedly made about its medium-term performance, expected FY26 revenue and net profit, and information about its likely FY26 performance. The wording used in the announcement presents these as allegations, and the company has not accepted any of them.

The announcement does not state which specific disclosures or statements the claim relies on, and it does not quantify any alleged loss.

CSL's Stated Position

CSL states that it considers it has at all times complied with its disclosure obligations. It denies any liability in relation to the proceeding and says it will vigorously defend it.

The company's wording is measured and confined to the matters it has been notified of. It describes the filing, the period, the categories of allegation and its own position, and it does not comment on the merits beyond its denial. The announcement was authorised for lodgement by Fiona Mead, the Company Secretary, and the contacts listed for follow-up enquiries are Michelle Rees for investor relations and Brett Foley for media relations. The release is dated Melbourne, Australia, and the company's registered details give its address as 655 Elizabeth Street, Melbourne, Victoria.

Where the Numbers Leave the Company

The announcement contains no financial figures, so its content is limited to the facts of the filing. CSL has confirmed that a group proceeding was filed in the Supreme Court of Victoria, that it was notified on the afternoon of 21 October 2026, and that the covered period runs from 11 February 2025 to 11 May 2026 inclusive.

The company has set out the legislation and rules named in the allegations, being the Corporations Act 2001, the ASIC Act 2001, the Australian Consumer Law and the ASX Listing Rules, along with the subjects of those allegations, which are continuous disclosure and representations about medium-term performance and FY26 revenue, net profit and likely performance. The statement is headed as an announcement that CSL will defend a class action, and it appears under the company's Melbourne dateline of 22 October 2026. Its response is a denial of liability, a statement that it has complied with its disclosure obligations at all times and an intention to defend the proceeding.