(Figures in millions USD) Historical Projected Share Price $74.31 2021 2022 2023 2024 2025 2026 2027 2028 Diluted Shares Out. 408.0 Total Revenue 1,944.1 2,182.4 2,455.0 2,749.3 3,229.6 3,769.9 4,423.3 5,230.1 Equity Value $30,318.5 % Growth y/y 17.2% 12.3% 12.5% 12.0% 17.5% 16.7% 17.3% 18.2% vs Consensus 0.7% 4.8% 5.4% 6.3% 8.9% (+) Debt 991.5 (-) Cash & Cash Equivalents (4,937.6) Gross Profit 1,586.9 1,768.4 1,963.5 2,186.8 2,602.7 3,057.0 3,608.9 4,293.4 Enterprise Value $26,372.4 % Margin 81.6% 81.0% 80.0% 79.5% 80.6% 81.1% 81.6% 82.1% % Growth y/y 17.5% 11.4% 11.0% 11.4% 19.0% 17.5% 18.1% 19.0% Stock Statistics vs Consensus 0.0% 3.5% 6.8% 10.5% 13.4% 11/1/2024 % of 52W High 74.0% Adj. EBITDA 635.6 664.1 474.8 241.2 557.9 940.2 1,451.0 2,081.5 % Margin 32.7% 30.4% 19.3% 8.8% 17.3% 24.9% 32.8% 39.8% Short Interest 8.1 % Growth y/y 38.1% 4.5% (28.5%) (49.2%) 131.3% 68.5% 54.3% 43.4% % of Float 2.0% vs Consensus 13.8% 15.7% 8.5% 17.2% 35.1% Days to Cover 4.2 Float 405.0 Diluted EPS 0.74 $ 0.93 $ 0.92 $ 0.39 $ 1.02 $ 1.67 $ 2.57 $ 3.67 $ ADV - Last Month 76.0 % Growth y/y 25.2% 25.1% (0.9%) (57.4%) 161.0% 63.6% 53.4% 43.0% vs Consensus 22.6% 31.2% 20.5% 20.6% 23.3% 4Y Price Target (2028 Year-End) Bear Base Bull Normalized FCF 275.9 318.5 342.0 245.5 594.8 903.7 1,310.0 1,827.4 Revenue 4,127.3 5,230.1 5,984.5 % Margin 14.2% 14.6% 13.9% 8.9% 18.4% 24.0% 29.6% 34.9% Gross Profit 3,387.9 4,293.4 4,912.9 % Growth y/y (17.9%) 15.4% 7.4% (28.2%) 142.3% 51.9% 45.0% 39.5% Adj. EBITDA 1,115.7 2,081.5 2,740.9 Multiple 25.0x 40.0x 60.0x Consensus Estimates Enterprise Value 27,892.6 83,260.0 164,451.6 (Figures in millions USD) Historical Projected 2021 2022 2023 2024 2025 2026 2027 2028 (-) Net Debt (7,360.6) (8,708.9) (9,859.2) Total Revenue 2,449.3 2,730.4 3,082.6 3,578.0 4,161.0 4,802.2 Equity Value 35,253.2 91,968.9 174,310.8 % Growth y/y 11.5% 12.9% 16.1% 16.3% 15.4% Diluted Shares Out. 431.0 431.0 431.0 Adj. EBITDA 487.5 211.9 482.3 866.2 1,238.0 1,540.9 Share Price 81.80 $ 213.40 $ 404.45 $ % Margin 19.9% 7.8% 15.6% 24.2% 29.8% 32.1% % Growth y/y (56.5%) 127.7% 79.6% 42.9% 24.5% MOIC (x) 1.1x 2.9x 5.4x % IRR 2.3% 28.9% 50.3% Diluted EPS 0.93 $ 0.32 $ 0.78 $ 1.39 $ 2.13 $ 2.98 $ % Growth y/y (65.6%) 143.8% 78.2% 53.2% 39.9% Diluted EPS 2.33 $ 3.67 $ 4.81 $ Implied P/E Multiple 35.1x 58.1x 84.2x Current Valuation (BASE CASE) Normalized FCF 1,218.3 1,827.4 2,340.0 (Figures in millions USD) Historical Projected Implied FCF Multiple 28.9x 50.3x 74.5x 2021 2022 2023 2024 2025 2026 2027 2028 EV / Revenue (TI) 10.7x 9.6x 8.2x 7.0x 6.0x 5.0x Blended 4Y Price Target EV / EBITDA (TI) 55.5x 109.3x 47.3x 28.1x 18.2x 12.7x Weight Share Price MOIC (x) % IRR P / E (TI) 80.7x 189.4x 72.6x 44.4x 28.9x 20.2x Bear 15% 81.80 $ 1.1x 2.3% Base 60% 213.40 $ 2.9x 28.9% EV / Revenue (Street) 10.8x 9.7x 8.6x 7.4x 6.3x 5.5x Bull 25% 404.45 $ 5.4x 50.3% EV / EBITDA (Street) 54.1x 124.5x 54.7x 30.4x 21.3x 17.1x Blended 100% 241.42 $ 3.2x 30.2% P / E (Street) 79.9x 232.2x 95.3x 53.5x 34.9x 24.9x CSGP offers an attractive risk/reward skew with conservative multiple underwrites, delivering 29% IRR and 2.9x MOIC in our 2028 base case. Projections & Valuation Base case underwrites monopoly economics in core data suite and convexity in Homes.com ramp • 19k annual CoStar Suite subscriber add and 3% y/y ARPU growth yields double-digit core returns • 11% Apartments.com ARR / client growth driven by inflection in 100+ unit multifamily properties • Homes.com member agents maintain 35%+ CAGR, driving +24% beat to 2028 Street Total Sales • Bottom-line profitability driven by flat-lined S&M spend as CSGP tapers Homes.com advertising • Overall, we underwrite a +23% beat to 2028 Street EPS Conservative 40x fwd. EBITDA multiple at 2028 exit • CSGP has traded at 48x EV/EBITDA over past five years, at a premium to both top in-class info service companies (25x median) and vertical marketplaces (21x median) • Concerns over elevated Homes.com S&M are overblown, as data scrapes reveal effective agent conversion to the platform (agent listings +25% CAGR over past nine years) • Exit multiples in all cases remain conservative to trading history (72x average over past year, 58x average over past two years) Key Assumptions & Drivers 11 Sources: Company Filings, Internal Estimates, Bloomberg Terminal, CapIQ