The delisting offer to the shareholders of Riddhi Siddhi Gluco Biols (from Ganpatraj L Chowdhary, promoter) opens on Tuesday and closes on March 12. The floor price for the offer is ₹510. The acquirer plans to mop up 17.966 lakh shares, representing 25.18 per cent of its equity capital. Upon the combined shareholding of the promoter/promoter group reaching a minimum of 90 per cent of the equity, the company will seek to voluntarily delist its shares from the BSE.