** Shares of Privi Speciality Chemicals PIVI.NS slide 11.9% to 2,811 rupees, its lowest level since late October 2025
** Stock set for its worst one-day drop since May 2022
** More than 4.1 million shares change hands across 10 separate block deals
** All deals made at discounts in the range of 9.1%-13.4% to Tuesday's closing price of 3,190.50 rupees
** Multiple media reports on Tuesday said an unnamed shareholder would sell a 6.3% stake of PIVI via block deals
** Overall, 5.6 million shares traded on Wednesday; stock's busiest session on record
** Including day's losses, stock up 60% YTD, set for a third-consecutive year of gains
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))