Nissan Motor Co. unveiled the responsibilities of its new top managers, appointing a new chief financial officer and making other executive moves as the automaker seeks to turn a new page almost a year since the arrest of former Chairman Carlos Ghosn.

Stephen Ma, corporate controller and former CFO of Nissan's China joint venture, will take over as CFO from Hiroshi Karube, the Yokohama-based company said in a statement Friday. Newly appointed Chief Executive Officer Makoto Uchida will formally join the board, taking over from Dec. 1.

Nissan overhauled its top management a month ago, adopting a collective-style leadership aimed at moving past the outsized influence Ghosn was seen to have had over the carmaker and its alliance with top shareholder Renault SA. Ashwani Gupta was appointed chief operating officer, and Jun Seki as deputy COO. The three face monumental challenges as they seek to restore profitability at a decade low while competing in an era of transition to "electrification" and autonomous vehicles.