1stDibs Investor Presentation Deck

2023 Q3 GMV: $89.0m $125,000 $100,000 $75,000 $50,000 $25,000 11 $0 Q3 2022 Q4 2022 Q1 2023 GMV (SK) Q2 2023 Q3 2023 Financial Performance 2023 Q3 Revenue: $20.7m $25,000 $20,000 $15,000 $10,000 $5,000 $0 Q3 2022 Q4 2022 Revenue (Sk) Q1 2023 Q2 2023 Gross Margin (%) Q3 2023 80% 60% 40% 20% 0% 2023 Q3 Adj. EBITDA: ($1.8m) $0 -$2,000 -$4,000 -$6,000 TW Q3 2022 Q4 2022 Adj. EBITDA (SK) Q1 2023 Q2 2023 - Adj. EBITDA Margin Q3 2023 0% -5% -10% -15% -20% -25%

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