BigCommerce Results Presentation Deck

FINANCIALS Investing to win in the mid market and enterprise segments to drive Enterprise ARR growth +32% +37% +41% +44% +46% +44% +41% YOY $35 $38 $42 $46 $51 $55 $61 +44% Note: growth rates represent organic + inorganic growth +40% $67 $71 IPO +48% +44% $80 $90 +51% $101 +58% $112 +54% $123 +78% $160 +72% $173 +68% *Note: Q3 2022 marks the 1 year anniversary of the Feedonomics acquisition $189 +68% $207 +35% $216 1Q18 2018 3Q18 4Q18 1Q19 2Q19 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 1Q21 2Q21 3Q21 4Q21 1Q22 2Q22 3Q22 4Q22 1Q23 2Q23 +14% +30% +21% $236 $224 $229

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