BeOne Medicines Ltd.

From time to time, we may become involved in legal proceedings or be subject to claims of a nature considered ordinary course in our business, including the intellectual property litigation described herein. Most of the issues raised by such claims are highly complex and subject to substantial uncertainties. For a description of risks relating to these legal proceedings, see “Part I—Item 1A—Risk Factors” of this Annual Report, including the discussion under the headings entitled “Risks Related to Our Intellectual Property.” The outcome of any such proceedings, regardless of the merits, is inherently uncertain; therefore, assessing the likelihood of loss and any estimated damages is difficult and subject to considerable judgment. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

AbbVie Litigation

On September 6, 2024, AbbVie Inc. filed a complaint in the U.S. District Court for the Northern District of Illinois against the Company, one of its wholly-owned subsidiaries and an individual scientist, alleging misappropriation of trade secrets concerning the Company’s Bruton’s tyrosine kinase (“BTK”) degrader program, including the lead compound, BGB-16673. The complaint seeks an unspecified amount of monetary damages, declaratory judgment, restitution and other equitable remedies. The Company is vigorously defending against the claims and filed a motion to dismiss the complaint in its entirety on December 19, 2024.

ANDA Litigation

On February 25, 2026, our subsidiaries, BeOne Medicines USA Inc. and BeOne Medicines I GmbH, filed a patent infringement suit under the Hatch-Waxman Act against Zydus Pharmaceuticals (USA) Inc. and Zydus Lifesciences Limited (collectively, “Zydus”) in the United States District Court for the District of New Jersey. The patent infringement suit is in response to Zydus’ notice to BeOne concerning the filing of an Abbreviated New Drug Application (“ANDA”) with the U.S. Food and Drug Administration (“FDA”), seeking FDA approval to market a generic version of BRUKINSA® (zanubrutinib) tablets along with “Paragraph IV certifications” challenging certain BRUKINSA® Orange Book patents for invalidity and/or non-infringement. According to the notice, Zydus has not challenged BRUKINSA’s composition of matter patent, which remains intact and protects BRUKINSA® from generic competition until its expiration in 2034.

BeOne’s complaint alleges that by filing the ANDA, Zydus infringes certain of BRUKISNA’s Orange Book patents and seeks a permanent injunction to prevent Zydus from commercializing a generic version of BRUKINSA® tablets until the expiration of the asserted patents.

ANDA litigation is common in the U.S. pharmaceutical industry. We may receive additional notices from other generic drug companies and may file additional ANDA lawsuits in the future.