New Delhi, October 17: Sydney-headquartered Insurance Australia Group (IAG) has announced to sell the whole of its 26 per cent stake in State Bank of India General Insurance (SBIG). IAG has signed a definitive agreement with Azim Premji-led Premji Invest and American private equity group Warburg Pincus Group to sell 16.01 per cent and 9.99 per cent stake, respectively, the State Bank of India (SBI) on Thursday said.