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Monsanto Roundup Lawsuit Client Focused. Trial Ready. Billions Won.
  • National Reach & Recognition
    Our team was the only attorneys in America to serve on the trial teams for all three of the first Monsanto Trials
  • Experienced Legal Counsel

    The Wisner Baum attorneys obtained a $2 billion jury verdict in Pilliod et. al v. Monsanto Co., the ninth largest personal injury verdict in U.S. history.

  • Proven Track Record
    We have helped negotiate $10.9 billion in Monsanto Roundup settlements on behalf of clients nationwide.

Monsanto Roundup Lawsuit

Roundup Lawsuit Update December 2023 

We are no longer accepting Roundup lawsuit cases.

Monsanto Roundup (glyphosate) weed killer is designated as a probable human carcinogen by the International Agency for Research on Cancer (IARC), an arm of the World Health Organization (WHO). Farmers, farmworkers, landscapers, gardeners, and others who use Roundup weed killer or other glyphosate-based herbicides are at risk for developing non-Hodgkin lymphoma and other forms of cancer.

Faced with the prospect of paying massive medical bills and losing wages due to a cancer diagnosis, consumers from across the United States who were exposed to Roundup are making the decision to file a Roundup cancer lawsuit against Monsanto (now Bayer).

Roundup Settlement Update - Monsanto (Bayer) Agrees to Pay $10.9 Billion

On June 24, 2020, Bayer AG publicly announced that the multinational company had reached Roundup settlement agreements in principle with five of the leading law firms in the Roundup cancer litigation. The agreements would resolve more than 100,000 Roundup lawsuits for roughly $11 billion.

The agreements were reached after more than a year of negotiations and three consecutive trial losses for Bayer. Wisner Baum (formerly Baum Hedlund Aristei & Goldman) served on the trial teams for all three of those trials and the firm’s senior managing partner R. Brent Wisner served as co-lead counsel in two of the three cases, delivering the opening and closing statements. The trials resulted in a combined $2.424 billion in jury verdicts for the plaintiffs. Mr. Wisner was also an integral part of the settlement negotiations with Bayer.


Roundup Lawsuit

Roundup (glyphosate) is a Monsanto herbicide used by farmers, gardeners, maintenance workers, agricultural workers, and many others as an all-purpose weed killer. Since Roundup first entered the market in the 1970s, Monsanto has denied claims that Roundup causes cancer, insisting that Roundup is safe. A Monsanto advertisement once noted that Roundup is “safer than table salt.”

But according to internal Monsanto emails now known throughout the world as The Monsanto Papers, Monsanto has known for several decades that Roundup (glyphosate) causes cancer. Rather than informing consumers about the glyphosate cancer risk, Monsanto buried the risks as sales of Roundup continued to skyrocket.

In March of 2015, IARC surveyed the published research on Roundup cancer links and concluded the blockbuster herbicide is “probably carcinogenic to humans.” The cancer agency further concluded that the cancer most associated with exposure to glyphosate is non-Hodgkin lymphoma.

Outraged by Monsanto’s deception, more than 100,000 people have made the decision to file a Roundup lawsuit alleging exposure to Roundup causes cancer.

Our firm represents thousands of people who are pursuing justice against Monsanto (now Bayer) because they do not want what happened to them or a member of their family to happen to anyone else. They want consumers to have the choice— to know the health consequences associated with using a product. If they would have known that Roundup was a carcinogen, they never would have used the product.


The Only Roundup Cancer Attorneys in America to Serve on the Trial Teams for All Three of the First Monsanto Trials

The first three Roundup cancer lawsuits to proceed to trial resulted in a combined $2.424 billion in jury verdicts. Wisner Baum is the only law firm in the country to serve on the trial teams for all three of the first Monsanto lawsuits to go before juries. In two of those trials, Wisner Baum attorney R. Brent Wisner served as co-lead trial counsel.

Monsanto Hit with Historic $2 Billion Verdict Losing Third Straight Roundup Trial

Roundup Link to Cancer

Brent WisnerRoundup Cancer Attorney

“Monsanto’s history is one full of vast lies. They mislead people, promise that their products are safe and make a lot of money by doing so. And when things get uncomfortable, they simply move on to another product. This strategy has proven successful for over 100 years.” - Brent Wisner

Watch Brent Wisner Interviewed on 60 Minutes Australia

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Wisner Baum and Co-Counsel Defeat Monsanto in First Three Roundup Trials

We and The Miller Firm are the only attorneys in America to successfully defeat Monsanto in multiple trials. Our firm served on the trial teams in Johnson v. Monsanto Co., Hardeman v. Monsanto Co., and Pilliod v. Monsanto Co., which resulted in over $2.4 billion in combined jury verdicts.

Pilliod v. Monsanto Co.

After years of spraying Roundup weed killer, Alva and Alberta Pilliod both developed non-Hodgkin’s lymphoma. The California couple filed a Roundup lawsuit alleging design defect and failure to warn against Monsanto. The Miller Firm asked us to partner with them in conducting the trial for the Pilliods. Roundup lawyer R. Brent Wisner served as co-lead trial counsel, with Michael L. Baum and Pedram Esfandiary also serving on the trial team, among others.

On May 13, 2019, the jury awarded Alberta over $37 million in compensatory damages and awarded Alva over $18 million in compensatory damages. The jury also awarded the couple $2 billion in punitive damages. The jury trial was completed over roughly six weeks.

The trial court conditionally denied Monsanto’s motion for a new trial, contingent on the Pilliods accepting reduced compensatory and punitive damages worth $87 million in total. The Pilliods accepted the reduced damages.      

Monsanto appealed the decision, but the Court of Appeals upheld the reduced verdict in 2021. The California Supreme Court later denied Monsanto’s request for further review of the Court of Appeals’ decision.

In 2022, Monsanto asked the Supreme Court of the United States (SCOTUS) to review the verdict. On June 27, 2022, SCOTUS denied the petition for a writ of certiorari.

“After years of racking up loss after loss in this case, Monsanto can no longer avoid responsibility for the unspeakable harm they have caused Alva and Alberta Pilliod,” said Roundup lawyer R. Brent Wisner. “The high court’s decision is further proof that Monsanto’s only path in this litigation is through the trial courts, which is the way it should be. I am personally looking forward to trying a case against Monsanto this fall in California, my first since the Pilliod trial. Despite Monsanto’s recent victories, I am confident that our team can repeat the success we enjoyed in the first three Roundup trials.”

Hardeman v. Monsanto Co.

Edwin Hardeman filed a Roundup lawsuit alleging the weed killer caused his non-Hodgkin’s lymphoma through his attorneys Jennifer Moore and Aimee Wagstaff. His lawsuit against Monsanto was the first federal Roundup cancer lawsuit to proceed to trial before U.S. District Judge Vince Chhabria. Attorneys Moore and Wagstaff asked our firm to help them conduct the trial for Mr. Hardeman. Roundup attorneys R. Brent Wisner, Michael L. Baum, and Pedram Esfandiary served on the trial team.

On March 27, 2019, a jury awarded Edwin Hardeman $5,267,634.10 in compensatory damages and $75 million in punitive damages. The district court later reduced the jury's punitive damages award to $20 million.

On May 14, 2021, the Ninth Circuit Court of Appeals affirmed the district court's judgment in favor of Mr. Hardeman. Months later, Monsanto submitted a petition for a writ of certiorari with SCOTUS. Several amicus briefs were subsequently filed, including one from the Justice Department saying Monsanto’s writ of certiorari should be denied.

On June 22, 2022, SCOTUS denied Monsanto’s petition for a writ of certiorari, allowing Mr. Hardeman’s final judgment of $25.2 million to remain intact.

“The decision is not surprising, but it is welcomed,” said Roundup lawyer R. Brent Wisner. “Monsanto will never get the ‘magic’ preemption bullet it hoped for. This litigation will continue to be fought in the trial courts, in front of juries, like it should be."

Johnson v. Monsanto Co.

Dewayne “Lee” Johnson, a school district grounds manager, was a heavy user of Roundup weed killer. Johnson filed a Roundup lawsuit against Monsanto after receiving a non-Hodgkin’s lymphoma diagnosis. His case was the first Roundup lawsuit to go before a jury in 2018. The Miller Firm represented Mr. Johnson and asked us to help them conduct the trial. R. Brent Wisner served as co-lead trial counsel for Mr. Johnson. Michael L. Baum and Pedram Esfandiary were also on the trial team.

On August 10, 2018, the jury found that Monsanto failed to adequately warn of its products’ potential dangers and that its products had a design defect. Mr. Johnson was awarded roughly $39 million in compensatory damages and $250 million in punitive damages.

The court denied Monsanto’s motion for a new trial on the condition that Johnson accept a reduced award of punitive damages. Johnson accepted the reduced verdict of $78.5 million.

Monsanto filed an appeal on April 23, 2019. On July 20, 2020, the California Courts of Appeal First Appellate District ruled in favor of Mr. Johnson but reduced the jury’s future noneconomic compensatory damages award to $4 million, which results in a total reduced award of $10,253,209.32 in compensatory damages. The judgment is further modified to reduce the award of punitive damages to $10,253,209.32.

"This is another major victory for Lee and his family,” said Roundup lawyer R. Brent Wisner following the Court of Appeals win. “Nearly every argument by Monsanto was rejected, including Monsanto's vaunted preemption defense, and the verdict was upheld. The reduction in damages is a function of a deep flaw in California tort law, not the merits of the case. Basically, California law does not allow a plaintiff to recover for a shortened life expectancy. This effectively rewards a defendant for killing a plaintiff, as opposed to just injuring him. It is madness. That Lee will not live an entire life with his wife and children should be compensable. Hopefully, we can change this irrational law."

Monsanto did not take the case to the Supreme Court. Mr. Johnson received his compensation in late 2020.

Who Can File a Roundup Lawsuit Against Monsanto?

Wisner Baum represents people from all across the country who were exposed to Roundup (glyphosate) and later diagnosed with B cell or T cell non-Hodgkin lymphoma, including many subtypes like diffuse large B cell lymphoma (DLBCL), chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), follicular lymphoma, mantle cell lymphoma (MCL), hairy cell leukemia (HCL), Burkitt lymphoma, and cutaneous T-cell lymphomas (mycosis fungoides and Sezary syndrome).

Most of our clients are individuals who sprayed Roundup around their home or business. We also represent government workers, farmers, agricultural workers, gardeners, landscapers, and others.

Anyone diagnosed with non-Hodgkin lymphoma after using Roundup for their occupation or on their property (i.e. home and garden use) should consider speaking with a Roundup cancer attorney about filing a claim. Thousands of individuals from all walks of life and from all across America have filed Roundup cancer lawsuits against Monsanto, with more and more people joining the litigation each day.

Watch Attorney Brent Wisner Deliver the Closing Arguments in the First Roundup Cancer Trial, Johnson v. Monsanto


Wisner Baum has not been involved in the Roundup litigation since the $10.9 billion settlement reached in 2020.   

December 6, 2023: Bayer will pay approximately $3.5 million to a Pennsylvania woman after a jury Philadelphia jury concluded Roundup weedkiller caused her cancer. The trial, which lasted roughly three weeks, culminated in a verdict that included $462,500 in compensatory damages and $3 million in punitive damages. This is the fifth consecutive court loss for Bayer.

November 20, 2023: A Missouri jury delivered a verdict worth $1.5 billion in favor of the plaintiffs in a Roundup trial. This is the second-largest jury verdict in the Roundup litigation (our firm earned a $2.055 billion verdict in 2019). Plaintiffs Dan Anderson, James Draeger, and Valorie Gunther will receive a total of $61.1 million in damages and $500 million each in punitive damages. The plaintiffs allegedly developed NHL after using Roundup. 

October 31, 2023: Another significant Roundup verdict. The jury in the case of Dennis v. Monsanto Co. returned a verdict worth over $330 million, including punitive damages. The trial took place in San Diego, California.

October 27, 2023: The jury in the case of Caranci v. Monsanto Co. delivered a $175 million verdict in favor of the plaintiff, which includes punitive damages. The case, filed on behalf of an 82-year-old man who alleged Roundup caused his NHL, was tried in Philadelphia. 

October 20, 2023: A St. Louis jury returned a verdict in favor of a 67-year-old plaintiff. The jury found that Monsanto/Bayer failed to sufficiently warn about the potential risks associated with Roundup which the plaintiff alleged caused his non-Hodgkin lymphoma.

June 15, 2023:  New York Attorney General Letitia James announced that Monsanto/Bayer will pay a settlement worth nearly $7 million to the state to resolve allegations concerning misleading advertising about the safety of glyphosate weed killers like Roundup. 

May 24, 2023: The case of Gordon v. Monsanto Co. culminated in a jury verdict for Bayer/Monsanto. This is the seventh straight win for the defense. 

December 14, 2022: The case of Langford v. Monsanto Co. et al. (CGC-21-592238), ended in a confidential settlement before trial. Another case that was supposed to proceed to trial in Hawaii (Pied v. Monsanto Co.) has also been settled. 

November 14, 2022: Bayer/Monsanto won another trial, the sixth win in a row. This case, Moore v. Monsanto Co., was tried in St. Louis County Circuit Court. 

More trials are upcoming in the next few months. 

September 2, 2022: A jury in St. Louis returned a verdict in Bayer’s favor in another Roundup trial. This is the fifth consecutive victory for Monsanto/Bayer. 

July 4, 2022: The Ninth Circuit panel unanimously told the EPA to reconsider its conclusion that glyphosate, the active ingredient in Roundup weedkiller, is not an “unreasonable risk to man or the environment.” The court agreed with environmental and food safety advocates that the agency did not fully consider whether Roundup causes cancer. Per the decision, “most studies EPA examined indicated that human exposure to glyphosate is associated with an at least somewhat increased risk of developing NHL,” which contradicts EPA’s conclusion that glyphosate is “not likely to cause cancer.”

June 27, 2022: The Supreme Court denied Bayer’s petition for a writ of certiorari in Pilliod et al. v. Monsanto Co. The Pilliods will retain the $87 million reduced verdict. 

June 21, 2022: The Supreme Court denied Bayer’s petition for a writ of certiorari in the case of Hardeman v. Monsanto Co., allowing the final judgment of $25.2 million to remain intact.

June 11, 2022: The jury in Shelton v. Monsanto Co. returned a verdict for the defense. 

June 2, 2022: Former Monsanto CEO Hugh Grant gave testimony during the trial of Shelton v. Monsanto Co. Grant said Monsanto did not conduct their own tests to evaluate whether there was a connection between Roundup and non-Hodgkin’s lymphoma.

December 13, 2021: Bayer won another Roundup trial. The case of Stephens v. Monsanto Co., which was conducted over Zoom, culminated in a jury verdict for the defense. Per the verdict, the plaintiff’s use of Roundup was not the cause of her cancer.

November 18, 2021: Bayer won its first trial in California regarding Roundup. The case alleged a child's rare form of non-Hodgkin's lymphoma was caused by his mother's use of the herbicide in her garden. The jury determined that the child's exposure to Roundup was not a significant factor in his cancer. (2023 Update: Bayer reached a confidential Roundup settlement with the plaintiff in this case).

May 14, 2021: The Ninth Circuit Court of Appeals in San Francisco denied Bayer’s appeal in Hardeman v. Monsanto Co.


Frequently Asked Questions

Have questions? We are here to help. Still have questions or can't find the answer you need? Give us a call at 855-948-5098 today!

  • If I File a Roundup Lawsuit, Am I Joining a Monsanto Class Action?

    No, the individual Roundup lawsuits over the link to non-Hodgkin lymphoma are not part of a Monsanto class action. The individual Roundup cancer lawsuits seek remedy for injuries (non-Hodgkin lymphoma) sustained as a result of being exposed to Roundup and its active ingredient, glyphosate.

    Roundup class actions against Monsanto are related to allegations of false and misleading information on the Roundup label and don’t involve personal injury or wrongful death claims. According to the class actions, Monsanto continues to mislead consumers by representing glyphosate, the active ingredient in Roundup, as targeting an enzyme that is “found in plants but not in people or pets.”

    The Monsanto class actions (filed in multiple states) allege that the enzyme glyphosate targets exist in people and pets. Per the class actions:

    “Glyphosate functions as a biocide by inhibiting the enzyme 5-enolpyruvylshikimate-3-phosphate (“EPSP”) synthase, disrupting the fifth of six enzymatic steps in the shikimate pathway, which processes aromatic amino acids in certain organisms. Although humans and other mammals themselves do not have a shikimate pathway, the shikimate pathway is present in bacteria, including beneficial bacteria that inhabit the mammalian gut and are essential to overall health. EPSP is therefore “found in . . . people [and] pets. Just like it inhibits EPSP synthase in weeds, the active ingredient in Roundup inhibits EPSP synthase in these human and pet gut bacteria, and just like it targets weeds, the active ingredient in Roundup targets the human and pet gut bacteria.”

  • What is the Difference Between an Individual Roundup Lawsuit and the Roundup Class Action?

    Individual lawsuits against Monsanto seek remedy for personal injuries (non-Hodgkin lymphoma) sustained as a result of exposure to Roundup. Farmers, farm workers, horticulturalists, landscapers, gardeners, government employees, and a host of other people have filed individual lawsuits against Monsanto based on allegations that Monsanto knew about the link between exposure to Roundup and non-Hodgkin lymphoma, but failed to warn consumers.

    The Monsanto Roundup class action, on the other hand, involves consumers who say they would never have purchased Roundup products had they known that glyphosate targets an enzyme that exists in the human body and the bodies of certain mammals, contrary to Monsanto’s marketing.

    Anyone who purchased certain Roundup products and are not participating in a personal injury or wrongful death lawsuit can participate in the Monsanto class action over the misbranding of Roundup. Claimants are not required to prove that they suffered personal injuries as a result of using the product, only that they purchased the product.

    Wisner Baumare not only amazing attorneys, but more importantly they are activists. They are about changing the systems which got us into trouble in the first place. They understand their role in the process of making change. Attorneys have the fortunate ability to go into the company files during the investigative process. They see the companies’ behaviors and work hard at getting confidential documents declassified that have true public health benefit. — Kim Witczak.

    Read more from our clients

  • Does Roundup Cause Non-Hodgkin Lymphoma?
  • How Does Glyphosate Cause Cancer?

    Studies show that exposure to Roundup and its active ingredient, glyphosate, can cause DNA damage and DNA strand breaks, an important precursor to cancer. IARC specifically assessed the genotoxicity of Roundup (the property of chemical agents that damages the genetic information within a cell causing mutations, which may lead to cancer) and concluded that “[t]here is strong evidence that glyphosate causes genotoxicity.”

    Roundup exposure can also induce oxidative stress, which is thought to be involved in the development of numerous conditions, including cancer, autism, and Parkinson’s disease. In addition to DNA damage and oxidative stress, some scientists have suggested Roundup exposure can lead to a chronic inflammatory state in the gut, as well an impaired gut barrier, which can increase the risk of cancer.