Bayer AG agreed to buy Monsanto Co. (NYSE: MON)  in a deal valued at $66 billion, winding up four months of talks to create the world’s biggest supplier of seeds and pesticides.

Bayer will pay $128 a share in cash, the company said in a statement. The bid, the biggest deal in 2016 and largest foreign takeover ever by a German company, is 21 percent above Monsanto’s closing price on Sept. 13 in New York. Bayer also agreed to pay Monsanto a break-up fee of $2 billion if the deal is rejected on antitrust grounds.

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