ENVIRONMENTAL, SOCIAL & GOVERNANCE REPORT 2023

Success of Apartments.com THE WALL STREET JOURNAL. CoStar to Acquire Apartments.com for $585 Million Growth Since Acquisition 2014 2023 Industry Rank 5th place in highly fragmented online rental search industry The leading online rental marketplace* #1 Revenue $86 million $940 million revenue run rate 11X Traffic 4 million monthly uniques 45 million average monthly uniques 11X Customers 18,000 communities 69,000 communities * 2023 #1 in Brand Awareness and Revenue. 2023 Revenue Run Rate based on Q3 2023 annualized. 2014 ComScore traffic data. 2023 Google Analytics traffic data. Customer data from internal database. Apartments.com™ 4X CoStar Group™

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