Two new co-managing partners have been selected to head up DLA Piper’s Chicago office.The firm has selected partners Richard A. Chesley and Brendan P. Head to lead the office. They succeed David Mendelsohn, who served as the Chicago managing partner since 2012. He remains as a partner with the firm.The two officially started in their new positions in late June. They have continued to manage their full-time practices.“The decision was made [by firm management] to ask us to do this jointly as we look to move the …