CASTLE BIOSCIENCES INC 10-K

Item 2. Properties. We lease approximately 27,000 square feet of commercial office space located in Friendswood, Texas where our corporate headquarters is currently located. This lease commenced in late 2020 under a 60-month term that will expire in November 2025, and provides for a single five-year renewal option which we have not used. We lease approximately 46,000 square feet of commercial real estate located in Phoenix, Arizona under two agreements with terms expiring in July 2033 and October 2033, respectively. Each contract provides us with two five-year renewal options, none of which have been used. Most of the square footage at these locations is dedicated laboratory space. We lease approximately 45,000 square feet of commercial real estate located in Pittsburgh, Pennsylvania. This lease commenced in April 2023 under a 10.5-year term, expiring in October 2033, and provides us with a single five-year renewal option which we have not used. A majority of the square footage in this facility is dedicated for laboratory use. We own 23 acres of land in Friendswood, Texas. We have contracted for the development and construction of an 80,000 square foot commercial office building on this land. Construction is currently underway and is expected to be completed in early 2026 and will be the future location for our corporate headquarters. We intend to lease out approximately 33,000 square feet of office space in our building.