The Monsanto Roundup cases heading into late October 2026 rest on two theories: strict-liability design defect and negligence. Those theories back a proposed up to $7.25 billion nationwide class deal for current and future non-Hodgkin lymphoma claims.
Non-Hodgkin lymphoma is the group of blood cancers at issue, and glyphosate is the chemical at issue in Roundup. Failure-to-warn was once the lead claim, but a June Supreme Court preemption ruling removed it where EPA approved the label without a cancer warning. The class proposal still awaited a final fairness ruling at month-end, while individual trials continued.
Official resources:
- Read the official notice from Cornell — Use this primary source to verify the official announcement.
- Read the official guidance from Epa — Use this primary source to verify the official guidance.
Table of Contents
- What would the class deal do?
- Why is failure-to-warn no longer available?
- Which claims remain?
- What science frames causation?
- What did the late-October trial show?
What would the class deal do?
Monsanto announced the proposal on Feb. 17, 2026, according to Bayer, to resolve current and future United States claims through a long-term claims program. Bayer's quarterly legal-risk disclosure describes declining capped annual payments for up to 21 years totaling up to $7.25 billion, following court approval Bayer Q3 legal-risk disclosure. The St. Louis court granted preliminary approval on Mar.
4, 2026, according to Bayer. It held the final fairness hearing on Sept. 14, 2026, with no final ruling reported by Oct. 31, 2026, according to Bayer and Reuters. No class payments were yet due.
Why is failure-to-warn no longer available?
On June 25, 2026, the Supreme Court held 7-2 in Monsanto v. Durnell that federal pesticide law preempts state warning claims, according to Holland & Knight Holland & Knight analysis. The law is FIFRA, the federal statute controlling pesticide labels.
A state cannot require a cancer warning that EPA left off an approved label. Failure-to-warn had been plaintiffs' primary theory, according to the Cornell LII syllabus of the decision. It alleged Monsanto knew or should have known of glyphosate cancer risk and did not warn. That route is now barred where EPA approved the label without that warning.
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Which claims remain?
Surviving cases allege strict-liability design defect and negligence, according to the Missouri Court of Appeals filing in WD87059. The two theories ask different questions: A warning dispute asks what the label said.
These claims ask whether the product was too dangerous to sell as formulated and whether testing and care were reasonable. Plaintiffs must still link specific exposure to specific disease.
- design defect: glyphosate makes Roundup unreasonably dangerous as designed
- negligence: Monsanto failed to use ordinary care or adequately test it
What science frames causation?
Plaintiffs rely heavily on a March 2015 finding by an IARC working group of 17 experts, according to IARC. It classified glyphosate as Group 2A, probably carcinogenic to humans. That classification supports argument, not automatic proof in any one case.
EPA says it is redoing glyphosate's human-health risk assessment, with completion anticipated in late 2026, according to EPA. Its prior not-likely-carcinogenic view remains under review and labels are unchanged. The split leaves causation contested and label-driven claims harder to bring.
What did the late-October trial show?
Individual design-defect trials continued while the class deal awaited its separate ruling. Readers should separate trial outcomes from class approval, since one jury does not decide the nationwide proposal. No class money moves before a final fairness order. Reuters reported on Oct.
30 that a unanimous St. Louis County jury on Oct. 29 rejected design-defect claims by three women alleging Roundup caused their non-Hodgkin lymphoma Reuters trial report. The $7.25 billion deal awaited a separate ruling at that time.
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