Three M Paper Boards' promoter, Rushabh Hitendra Shah, increased his stake by acquiring 2,000 shares through an open market purchase. This acquisition raises his holding from 14.69 lakh shares (7.64%) to 14.71 lakh shares (7.65%) of the company's total equity share capital of 19.23 crore shares. This move by a promoter highlights their continued confidence in the company.