Oatly Group AB is lining up a successor to Toni Petersson, the chief executive who helped turn its oat milk into a global phenomenon and took the company public last year, according to people familiar with the matter.
Last month, the Swedish company said it had hired as president Jean-Christophe Flatin, a food-industry veteran and former senior executive at candy giant Mars Inc. Mr. Flatin is seen as a likely eventual replacement for Mr. Petersson, the people said, adding that no change is imminent.