Shares of Gujarat Themis Biosyn will remain in focus on Thursday, as its promoter Pharmaceutical Business Group (India) plans to sell 9.79 per cent stake through the offer-for-sale route. The company has fixed the floor price at ₹18 a share for the stake sale. It has reserved 25 per cent of the sales for mutual funds and insurance companies. The holding of domestic funds in the company is insignificant.The stock jumped 4.8 per cent to ₹21.9.