(Bloomberg) — Royal Dutch Shell Plc appointed former BHP Group executive Andrew Mackenzie as chairman, and said its board would have as many women as men on it for the first time. Mackenzie, who oversaw BHP's retreat from shale, takes over from Chad Holliday, whose departure had been flagged since last year. It also appointed cyber expert Jane Lute, a move that will take its board to gender parity, the company said. "Andrew brings to Shell his experience of leadership, his global outlook, and a deep understanding of the energy business and climate action," the company said in the statement. Shell's most pressing challenge is navigating the energy transition, and it has set ambitious climate goals as it moves away from its traditional Big Oil model under CEO Ben van Beurden. Mackenzie, a British national, joined Shell's board in October. He was chief executive officer of BHP from 2013 to 2019.