Restriction on securities: Tribunal can impose time-limited restrictions during investigations, breach triggers company fines and officer sanctions. Tribunal may, during investigations under section 216 or on complaint, order that securities be subject to restrictions deemed fit for a period not exceeding three years to facilitate fact-finding. Breach of such an order attracts statutory penalties: the company is liable to a specified fine range and every officer in default faces imprisonment up to the statutory maximum and/or fines within prescribed limits, ensuring both corporate and individual accountability for compliance with investigatory restrictions.