X0206 3 2023-06-30 0 0001626450 BigCommerce Holdings, Inc. BIGC 0001981372 Lentz Daniel 11305 FOUR POINT DRIVE BUILDING II, SUITE 100 AUSTIN TX 78726 false true false false Chief Financial Officer Series 1 Common Stock 109276.00 D Non-Qualified Stock Option (Right to Buy) 10.42 2033-03-03 Series 1 Common Stock 40910.00 D Non-Qualified Stock Option (Right to Buy) 20.25 2032-03-08 Series 1 Common Stock 24244.00 D Non-Qualified Stock Option (Right to Buy) 59.56 2031-03-13 Series 1 Common Stock 5082.00 D Non-Qualified Stock Option (Right to Buy) 3.18 2029-02-27 Series 1 Common Stock 31184.00 D The option agreement provides that the option vests 25% at the one year anniversary of the vesting start date, then vests ratably monthly thereafter for a total vesting period of four years. The vesting start date was March 21, 2023. The option agreement provides that the option vests 25% at the one year anniversary of the vesting start date, then vests ratably monthly thereafter for a total vesting period of four years. The vesting start date was March 21, 2022. The option agreement provides that the option vests 25% at the one year anniversary of the vesting start date, then vests ratably monthly thereafter for a total vesting period of four years. The vesting start date was March 1, 2021. These options fully vested on November 19, 2022. /s/ Chuck Cassidy, Attorney-in-Fact for Daniel Lentz 2023-07-05