AMERICAS – Sally Shankland will step down as chief executive of UBM Americas in June, after 28 years with the organisation. Shankland, who joined the company in 1988, plans to work in a different industry, but has not revealed details of her new employer. UBM Americas is expected to appoint an in-house successor before Shankland leaves the organisation at the end of June. The company’s chief operating officer, Brian Field, previously served as chi...