BigCommerce Investor Day Presentation Deck

B FINANCIALS BigCommerce's transformation into an enterprise ecommerce leader began years before IPO and is accelerating Enterprise Account ARR as a % of total ARR 60% 40% 2017 Y/Y Growth +46% 55% 45% 2018 +41% 48% 52% 44% 56% 2020 36% +51% 64% 2019 +44% Enterprise Account ARR Note: Both graphs have like for like scale to facilitate accurate comparison 2021 +72% 33% 67% 1Q22 +68% Non-Enterprise Account ARR Enterprise Account net new bookings as a % of total net new bookings 42% 58% 2017 28% 72% 2018 23% 77% 2019 35% 65% 2020 18% 82% 2021 15% 85% 1Q22 * Non-Enterprise Net New Bookings ■ Enterprise Account Net New Bookings *1Q22 net new bookings excludes effect of one time move of certain non-enterprise accounts into enterprise plans

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