Shares of BIL Energy Systems will turn ex-bonus on Thursday (January 11). The company is rewarding its shareholders with one bonus share for each share held. While promoters hold 46.79 per cent, the public, including General Insurance Corporation (1.65 per cent stake), hold 53.21 per cent. A little over 4,900 small retail investors own 10.71 per cent stake in the company. Investors wishing to receive the bonus shares need to buy the ₹1 face value stock by Wednesday.