PMA ▼ -2.4% - PMA Graphene Technology Group Inc. $PMA - PMA Graphene Technology Group Inc. Announces Leadership Changes and Appointment of Mr. Lei Liu as Chief Executive Officer PMA Graphene Technology Group Inc. shares fell 2.4% following the company's announcement of leadership changes and the appointment of Lei Liu as Chief Executive Officer. The market's negative reaction to the executive transition suggests investor concern about the change in strategic direction or confidence in the new leadership. 16-SEP-2026 08:30 AM ET