BigCommerce Results Presentation Deck

B (as of 6/30/23) 6 Mid market and enterprise focus yielding account growth and opportunities with larger, more complex customers +13% YoY 2.4k Q1 +17% 2.5k Q2 +17% +17% 2.7k 2.6k 1 Q4 2019 +17% 2.8k Q3 Q1 +17% 3.0k Number of enterprise accounts ($k) +21% 3.2k Q2 Q3 2020 +23% 3.4k Q4 +32% +26% 3.9k 3.6k Q1 +51% +38% 5.4k +50% 5.4k +52% 5.0k 4.8k +16% 5.6k Q2 Q3 Q4 Q1 Q2 Q3* 2021 2022 *Note: Q3 2022 marks the 1 year anniversary of the Feedonomics acquisition Note: Enterprise accounts represent any account with at least one BigCommerce enterprise plan. Year-over-year growth rates may not compute due to rounding. +15% 5.8k Q4 +9% +9% 5.8k 5.9k Q1 Q2 2023 34

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