Founders and some executives of infrastructure investor Plenary Group will receive a cash windfall after the Australian group sold a 49 per cent stake to Abu Dhabi sovereign wealth fund ADQ in a $1 billion deal.

John O’Rourke, co-founder and chairman of Plenary, said Canadian pension fund Caisse de depot et placement du Quebec (CDPQ) would sell its 20 per cent stake to ADQ, allowing existing investors to pocket some cash.