** Tamilnad Mercantile Bank TAMI.NS rises as much as 9.3% to 482 rupees, highest since December 18
** Co reports 15.3% y/y rise in Q4 net profit; interest earned grows 7% y/y
** Gross non-performing assets ratio improves to 1.25% from 1.32% in Q3
** Share price above 50-day, 100-day and 200-day exponential moving averages
** Stock sees most active trading session since August 2024, with more than 1.1 mln shares traded - ~15x the 30-day avg
** TAMI last up 4%, turning to YTD gains
(Reporting by Ashish Chandra in Bengaluru)
((ashish.chandra@thomsonreuters.com (+91 7982114624))