Clean Science and Technology’s shares plunged 8.9% after promoters Ashok Boob and Krishnakumar Boob reportedly sold a 20% equity stake through a block deal. The transaction involved 2.08 crore shares, executed at a floor price of Rs 1,030 per share, a 12.8% discount. Following the sale, the promoter group’s holding is expected to decrease significantly from 74.97%.