Matthew O’Grady was named president of Claritas, a service of Nielsen and a provider of target-marketing services.
O’Grady, 46, based in New York, succeeds Robert Nascenzi, who resigned last month.
O’Grady has been with Claritas since 1990. He was previously executive vice president of sales and service, responsible for managing all client relationships.
Before joining Claritas, O'Grady was group VP for sales and product management at San Diego-based National Decision Systems, which subsequently merged with Claritas in 1999.
O'Grady holds a Bachelor of Science degree from the University of California at Santa Barbara.