Mallinckrodt Pharmaceuticals plc, a global specialty pharmaceutical company, has appointed Paul Bisaro, Katina Dorton, Abbas Hussain and Wesley Wheeler to its Board of Directors, effective immediately. Bisaro has also been reappointed to his previous role as Board Chair.   In addition, the company announced that Siggi Olafsson has entered into a new employment agreement and will continue in his roles as Mallinckrodt’s President and Chief Executive Officer and a member of the Board.   O...