Disa India has fixed October 4 as the record date to determine the eligible shareholders to participate in the proposed buy back offer. The company plans to buy back up to 56,000 shares of ₹10 each (or 3.71 per cent of the total paid-up equity capital), from all the shareholders on a proportionate basis at ₹4,800 a share. That means investors who wish to participate in the offer have to buy the company’s shares by Friday, as they will turn ex-date on Monday.