Bayer's top managers are facing shareholders amid discontent over the fallout from the German company's acquisition of Monsanto, the maker of Roundup weed killer.

Chairman Werner Wenning told the annual general meeting in Bonn on Friday that company leaders "very much regret" falls in its share price. At the same time, CEO Werner Baumann insisted that "the acquisition of Monsanto was and remains the right move for Bayer." Bayer acquired Monsanto for $63 billion last year.

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Participants walk on dead bees placed by protestors prior the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Bayer's top managers are facing shareholders amid discontent over the fallout from the German company's acquisition of Monsanto, the maker of Roundup weed killer.

People attend a protest rally outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. Slogan reads 'Future Before Profit'. (AP PhotoMartin Meissner)

Environmentalists protested outside the convention center where the meeting was being held. Beekeepers brought thousands of dead bees whose death they blamed on chemicals in the environment.

CEO Werner Baumann prepares for the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

CEO Werner Baumann prepares for the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Protestors demonstrate against Monsanto outside the annual general meeting of Bayer AG in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Protestors demonstrate against Monsanto outside the annual general meeting of Bayer AG in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

A protestor shows dead bees outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

A protestor shows dead bees outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Bayer is fighting lawsuits over the alleged carcinogenic effects of Roundup. The company says scientific evidence shows the product's active ingredient, glyphosate, is safe.

Participants walk on dead bees placed by protestors prior the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Participants walk on dead bees placed by protestors prior the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Environmentalists protested outside the convention center where the meeting was being held. Beekeepers brought thousands of dead bees whose death they blamed on chemicals in the environment.

People attend a protest rally outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. Slogan reads 'Future Before Profit'. (AP PhotoMartin Meissner)

People attend a protest rally outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. Slogan reads 'Future Before Profit'. (AP PhotoMartin Meissner)

CEO Werner Baumann prepares for the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

CEO Werner Baumann prepares for the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Protestors demonstrate against Monsanto outside the annual general meeting of Bayer AG in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

Protestors demonstrate against Monsanto outside the annual general meeting of Bayer AG in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

A protestor shows dead bees outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)

A protestor shows dead bees outside the annual general meeting of the Bayer stock company in Bonn, Germany, Friday, April 26, 2019. Following the record acquisition of U.S. biotech and seed company Monsanto, Bayer's agricultural business has become a risk for the German chemical company. Bayer is facing enormous cost if the U.S. court will find Monsanto's glyphosate to be causing cancer. Since the take-over of Monsanto in June 2018, Bayer lost around half of its value in market capitalization. (AP PhotoMartin Meissner)