在其对先正达的最新报价被拒绝后，孟山都放弃了收购该公司的出价。
“Without a basis for constructive engagement from Syngenta, Monsanto will continue to focus on its growth opportunities built on its existing core business to deliver the next wave of transformational solutions for agriculture,” Monsanto said in a press release.
孟山都证实，它已于 8 月 18 日向先正达传达了一项修改后的提议，以合并两家公司。根据尽职调查和其他惯例条件，增强后的提案包括许多要素，包括以下内容：
- 孟山都的新提案将拟议交易的现金部分增加到每股 245 瑞士法郎。该提案还保持了与 4 月份提案中相同的股份数量，为先正达股东提供了新公司约 30% 的所有权。根据当时孟山都的股价和货币汇率，修订后的提议转化为每股 470 瑞士法郎的价值。
- 鉴于交易将完成的信心并提供额外的关闭风险保护，该提案将反向分手费增加到 $3 亿。如果孟山都无法获得必要的全球监管批准，则该反向分手费将由孟山都支付。
“Monsanto will continue its focus on opportunities within its existing core business and resume the implementation of its approved share repurchase program as soon as practical,” the company said. “In addition, Monsanto management today confirmed its confidence in delivering its five-year plan to more than double fiscal-year 2014 ongoing earnings per share by 2019.”