Navastar CEO of 37-years Dan Ustain notified the board he will be ending his career at Navistar effective immediately and gave no reason for the sudden retirement. He will be replaced by an former Textron Inc. CEO. Continue reading here.

Navistar CEO Dan Ustain will be leaving the company after 37 years of service and a doubling of the company's profits to $14 billion. The exact reason for his departure is still unknown.