Item 2. Properties

Our principal executive offices are located in Columbus, Ohio and Greifensee, Switzerland. The following table lists our principal facilities, indicating the location and whether the facility is owned or leased. The properties listed below serve primarily as manufacturing facilities or shared service centers and also typically have a certain amount of space for service, sales and marketing, and administrative activities. The facilities in Giessen, Germany and Viroflay, France are used primarily for sales and marketing. We believe our facilities are adequate for our current and reasonably anticipated future needs.