Johnson & Bell Ltd. added Mark D. Belongia as a shareholder in the business litigation and commercial transactions practices.Belongia’s business litigation experience focuses on cases in the banking, commercial, sports and entertainment areas. He has represented clients in a variety of cases, including white-collar litigation, government enforcement actions and compliance matters.He joins from Thompson Coburn LLP.• Polsinelli P.C. added Robyn C. Axberg as a shareholder in its corporate and transactional …