YOUR RIGHTS MAY BE AFFECTED BY A CLASS ACTION CASE PENDING IN COURT.

A lawsuit is pending in the Superior Court of the State of California, County of San Mateo (the “Court”), against Illumina, Francis A. deSouza, Sam A. Arnold, Ph.D., Caroline Dorsa, Robert S. Epstein, M.D., Samad, Karen McGinnis, Jay T. Flatley, Frances Scott Gottlieb, M.D., Gary S. Guthart, Ph.D., Philip W. Schiller, Susan E. Siegel, and John W. Thompson (“Defendants”).  In August 2021, Illumina acquired and merged with GRAIL (the “Merger”), and former GRAIL shareholders had their GRAIL stock exchanged for Illumina stock and other consideration (the “Merger Exchange”).  Plaintiffs allege that in connection with the Merger, Illumina issued the new shares of Illumina common stock pursuant to a materially false and misleading registration statement and prospectus (along with the documents incorporated therein, the “Offering Materials”). Defendants deny all of Plaintiffs’ allegations and deny any wrongdoing.

The purpose of this website is to inform you of: (1) the pendency of this lawsuit (the “Litigation”) against the Defendants; (2) how it might affect your rights; and (3) what steps you may take in relation to it.  This website is not an expression of any opinion by the Court as to the merits of any of the claims or defenses asserted by any party in this Litigation or whether Defendants engaged in any wrongdoing.

On June 4, 2026, the Court granted Plaintiffs’ request to proceed with their claims on behalf of the Class of all persons who acquired Illumina common stock in exchange for GRAIL securities in the August 18, 2021 Merger Exchange subject to certain exlusions described in the Notice and Settlement Agreement.

This website provides a summary of the Litigation, describes who is eligible to be included in the Class, the effect of participating in this class action, and explains how to request exclusion from the Class.  Your legal rights may be affected whether you act or do not act.  These rights and options—and the deadlines to exercise them—are explained on this website and in the Long-Form Notice.  Please read this Long-Form Notice carefully.

The Court has not ruled as to whether Defendants are liable.  The Court had not yet decided whether Defendants did anything wrong, the truth of the allegations in this Litigation, or the merits of the claims or defenses asserted.  This website is solely to advise you of your legal rights and options.

This is the definition of the class that the court approved:
All persons or entities who acquired Illumina common stock in exchange for GRAIL securities in the August 18, 2021 Merger Exchange.
Excluded from the Class are Defendants, the officers and directors and affiliates of Defendants, at all relevant times, members of their immediate families and their legal representatives, heirs, successors or assigns and any entity in which Defendants have or had a controlling interest.

If you are not sure whether you are a Class member, you may get free help by contacting the notice administrator at IlluminaGRAILMergerInfo@stretto.com, by phone toll-free at 1-855-994-2798, or by mail at In re Illumina, Inc. Shareholder Litigation, c/o Stretto, 410 Exchange, Ste. 100, Irvine, CA 92602.
You may also contact Class Counsel Dena C. Sharp or David W. Hall at dsharp@girardsharp.com or dhall@hallfirmltd.com, respectively.