EXECUTIVE CHANGES: New CEOs at Chesnara, Concurrent, Mode, Greencare Wed, 12th May 2021 15:27 (Alliance News) - The following is a round-up of London-listed company director and manager changes announced on Wednesday and not separately reported by Alliance News: Petrofac Ltd - Jersey-registered, London-based provider of oilfield services - Chief Financial Officer Alastair Cochran resigns from Petrofac to take up a new role on September 1. Petrofac promotes Treasurer & Head of Tax Afonso Reis e Sousa to CFO and the board. "Alastair has pioneered our transformation back to a capital-light business and leaves Petrofac strongly positioned for efficient and effective execution as markets recover and we rebuild our order book," says Chief Executive Officer Sami Iskander. A former Royal Dutch Shell PLC executive, Iskander joined Petrofac in November and took over as CEO in January.