Calypso, a medical device company that focus on cancer therapy, leased 9,700 square feet of office space at 4th & Blanchard. The tenant will occupy the 15th floor space in June. 4th & Blanchard is a Class-A, 366,643-square-foot office building located at 2101-2121 4th Ave. in Seattle. Larry Blackett and Bill Neil of Insignia Kidder Mathews represented the tenant, Calypso. The owner, Selig Real Estate Holdings, was represented in-house by Theresa Groff and Mike Brixner.