David Gilbertson is stepping down after three years as chief executive of Emap.
Former journalist Gilbertson was appointed to his current job in March 2008 when the current Emap was created. He was previously chief executive of Informa.
Emap was created in its current form by Guardian Media Group and private equity company Apax when they bought the business to business titles out of the old Emap empire in a £1.2bn deal. Emap now includes titles such as Nursing Times, Retail Week, Construction News and Broadcast.