X0306 4 2022-05-05 false 0001626450 BigCommerce Holdings, Inc. BIGC 0001860538 Kaloustian Robert 11305 FOUR POINTS DRIVE BUILDING II, THIRD FLOOR AUSTIN TX 78726 false true false false Chief Services Officer Series 1 Common Stock 2022-05-05 4 S false 1866.00 18.8462 D 50873.00 D Series 1 Common Stock 2022-05-05 4 S false 200.00 19.555 D 50673.00 D This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.5300 to $19.5299, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 2 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.5400 to $20.5399, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 3 to this Form 4. /s /Jeff Mengoli, Attorney-in-Fact for Robert Kaloustian 2022-05-09