Bayer’s Chairman to Leave After Monsanto Purchase Turns Sour

  • Timing is ‘surprising but appropriate,’ investor says
  • Chairman Wenning says he stayed on longer at board’s request
Werner Wenning, left, and Werner Baumann.Photographer: Jasper Juinen/Bloomberg
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Bayer AG Chairman Werner Wenning is leaving the German drugs and chemicals company before his term expires, capping a half-century of dealmaking that culminated in the contentious Monsanto acquisition and a blizzard of lawsuits over its Roundup weedkiller.

Wenning, 73, will be succeeded in April by Norbert Winkeljohann, 62, who joined Bayer’s supervisory board in May 2018 just before the Monsanto deal closed. The $63 billion purchase was the brainchild of Wenning and Chief Executive Officer Werner Baumann, who was censured by shareholders at last year’s annual meeting.