X0206 3 2020-08-04 0 0001626450 BigCommerce Holdings, Inc. BIGC 0001617333 Pearson Lisa C/O BIGCOMMERCE HOLDINGS, INC. 11305 FOUR POINTS DR, BLDG II, 3RD FLOOR AUSTIN TX 78726 0 1 0 0 Chief Marketing Officer Series 1 Common Stock 56488 D Incentive Stock Option (Right to Buy) 2.70 2018-09-20 2028-09-20 Series 1 Common Stock 37037 D Non-Qualified Stock Option (Right to Buy) 2.70 2018-09-20 2028-09-20 Series 1 Common Stock 253991 D Non-Qualified Stock Option (Right to Buy) 3.18 2019-02-27 2029-02-27 Series 1 Common Stock 50000 D Represents restricted stock units which vest and settle upon the satisfaction of both a service condition and a liquidity event condition. The liquidity event condition is satisfied upon the occurrence of a qualifying event, defined as the effectiveness of an initial public offering or the consummation of a change of control transaction. The service condition provides that the restricted stock units vest and settle in four equal annual installments beginning May 27, 2021. Option was immediately exercisable on the date of grant. /s/ Jeff Mengoli as Attorney-in-Fact for Lisa Pearson 2020-08-04