Commerce.com, Inc. — Director's Dealing 2021

May 27, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BigCommerce Holdings, Inc. (BIGC)
CIK: 0001626450
Period of Report: 2021-05-26

Reporting Person: Siminoff Ellen F (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-26	Series 1 Common Stock	S	750.00	$54.992	Disposed	68889.00	Direct
2021-05-26	Series 1 Common Stock	S	1750.00	$56.0244	Disposed	67139.00	Direct

Footnotes

F1: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2020.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.60 to $55.5999, 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.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.63 to $56.6299, 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.

F4: Includes 1,306 Restricted Stock Units which are subject to forfeiture until they vest.