Sergio Marchionne, who engineered a merger of the auto industry’s weakest companies—Fiat and Chrysler—and turned the combination into a profit generator, died at the age of 66.
Mr. Marchionne was treated at Zurich’s University Hospital for complications after undergoing what Fiat Chrysler Automobiles NV said was a surgical procedure on his right shoulder in July. The health issues forced the company to unexpectedly remove him as CEO on Saturday, speeding up a departure planned for early 2019 after a decade at the helm of...