COSTAR GROUP, INC.

In this Report, the words we, our, us, CoStar Group, or the Company refer to CoStar Group, Inc. and its direct and indirect wholly-owned subsidiaries. This Report also refers to our websites, but information contained on those sites is not part of this Report. Overview CoStar Group is a leading provider of online real estate marketplaces, information, analytics, and 3D digital twin technology in the property markets. Our mission is to digitize the world's real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives. We own and operate leading online marketplaces for real estate in the U.S., Australia, Europe, Canada, and Asia-Pacific based on the numbers of unique visitors and site visits per month. We provide more information, analytics, and marketing services than many of our competitors; offer the most comprehensive commercial real estate database available; and have the largest commercial real estate research department in the industry. We have created and compiled a standardized platform of online marketplace services, information, and analytics where industry professionals, consumers of real estate, and the related business communities can continuously interact and facilitate transactions by efficiently accessing and exchanging accurate and standardized real estate-related information.