Stellantis is in deep trouble as sales nosedive in the United States, prompting an urgent outcry from dealers accusing CEO Carlos Tavares of the “rapid degradation” of the company’s American brands. In a striking open letter to the automotive giant’s top executive,

Stellantis (STLA) on Thursday announced that CEO Carlos Tavares will not stay on with the automaker after his contract expires, amid a host of other management changes, sending the stock down.