Monsanto has allowed Bayer AG a glimpse into the St. Louis, Missouri-based seed company’s books amid ongoing merger talks. Sources familiar with the talks told Reuters this week Monsanto and Bayer have yet to sign a non-disclosure agreement, but Monsanto has granted Bayer a “limited drip of information.” A non-disclosure agreement would allow Bayer to conduct due diligence on Monsanto in reconsidering its offer to acquire the company. The sources also say Bayer has no appetite to put a deal at risk by going hostile, although added talks were "difficult." Monsanto CEO Hugh Grant told investors this week that Monsanto remains in discussions with Bayer and other parties about “potential strategic transactions.” Monsanto has rejected two potential bids from Bayer thus far, the latest being worth $64 billion.