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How Monsanto’s Roundup Herbicide Went From Bayer Asset to Burden

  • Settlement caps months of efforts to end weedkiller headache
  • Bayer knew of Roundup safety debate, bet on lack of evidence
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Roundup Not Carcinogenic, Formula Won't Change After Settlement: Bayer CEO

Bayer AG just agreed to pay as much a $10.9 billion to settle most of the legal headaches inherited with the takeover of Monsanto two years ago. That marriage, which followed a two-year courtship and cost Bayer a quarter of its value, didn’t start out as rocky. Here are key highlights of its history:

As Werner Baumann took the helm of Bayer, mergers and acquisitions were already reshaping the agricultural-products industry. Feeling the pressure, Bayer approached Monsanto, itself a target after failing to buy a rival. Shares immediately slumped on concern Bayer would be financially stretched by such a giant deal.