Exhibit 99.1 BigCommerce Announces First Quarter 2024 Financial Results First Quarter Total Revenue of $80.4 Million, an Increase of 12$340.1 Million, an Increase of 7% Versus Prior Year. Enterprise ARR of $248.2 Million, an Increase of 8% Versus Prior Year AUSTIN, Texas – May 9, 2024 – BigCommerce Holdings, Inc. (“BigCommerce”) (Nasdaq: BIGC), an open SaaS, composable ecommerce platform for fast-growing and established B2C and B2B brands and retailers, today announced fina ...