X0306 4 2021-05-14 false 0001626450 BigCommerce Holdings, Inc. BIGC 0001094792 MCDONALD JOHN T C/O BIGCOMMERCE HOLDINGS INC. 11305 FOUR POINTS DR, BLDG II, 3RD FLOOR AUSTIN TX 78726 true false false false Series 1 Common Stock 2021-05-14 4 A false 158.00 0.00 A 397.00 D Series 1 Common Stock 2021-05-14 4 A false 2455.00 0.00 A 2852.00 D Includes 2,852 Restricted Stock Units which are subject to forfeiture until they vest. /s /Jeff Mengoli, Attorney-in-Fact for John T. McDonald 2021-05-18