3 former Chrysler senior execs to retire from Stellantis 3 former Chrysler senior execs to retire from Stellantis July 27, 2021 dzadmin Comments 0 Comment Mark Chernoby, Scott Garberding and Michael Keegan, all of whom started before the DaimlerChrysler era, are leaving as the operations of Fiat Chrysler and PSA Group are combined.