It's the third consecutive verdict against the company over the product and the largest to date.
The ultimate size of any award that may end up being handed out remains unclear, though Levine told the AP that gap between the $3 billion in punitive damages and $79 million in compensatory damages, a 36:1 ratio, far exceeds the typical four to one ratio judges set as a cap in most circumstances.
The jury set the total punitive damages at $2 billion and added $55 million in compensatory pay, concluding that Roundup - based on herbicide glyphosate - had been defectively designed, and that the company failed to warn of the herbicide's alleged cancer risk.
It comes after a landmark court ruling in the U.S. saw Monsanto ordered to pay hundreds of millions of dollars for causing a man's cancer.
But Bayer now faces more than 13,400 United States lawsuits over Roundup's alleged cancer risk.
Donald Trump "Very Surprised" After Son Called To Testify In Russia Probe
John Cornyn, R-Texas, who said he understands the younger Trump's "frustration". It is unclear why the committee wants Trump's son to return to testify.
Bayer's stock price closed Monday at $15.91 a share, down 45 cents or 2.76% per share, in trading on the New York Stock Exchange.
Pillioid says they wish Monsanto had proper labelling on their round up containers for the potential life-altering dangers with using it.
Bayer said it was "disappointed" in the decision and would appeal. Appeals also are being filed in the two other cases, the Wall Street Journal reports in another article. It insists the glyphosate-based product is not linked to cancer.
The company said both Alva and Alberta Pilliod had long histories of illnesses known to be substantial risk factors for non-Hodgkin's lymphoma.
While it was a "risky move" to ask for an award of more than US$1 billion - and the damages will probably be reduced by the judge - the three verdicts against Bayer show jurors are convinced by evidence against the company, said Anna Pavlik, senior counsel for special situations at United First Partners LLC in NY.
The plaintiffs in the case, Alva and Alberta Pilliod of Livermore, California, said they used Roundup once a week for nine months of the year for more than three decades before being given their cancer diagnoses in 2011 and 2015 respectively, according to BuzzFeed News. Johnson was diagnosed with non-Hodgkin's lymphoma in 2014 and regularly spraying a high-concentration version of Roundup known as Ranger Pro as part of his job from 2012 to 2016. However other scientific studies, and the World Health Organization have found that human exposure can in fact lead to cancer.
The EPA reaffirmed its position in April, saying that the active ingredient glyphosate found in the weedkiller posed "no risks of concern" for people exposed to it by any means - on farms, in yards and along roadsides, or as residue left on food crops.