X0306 4 2022-03-01 0 0001169652 CHANNELADVISOR CORP ECOM 0001784929 Segovia Elizabeth C/O CHANNELADVISOR CORPORATION 3025 CARRINGTON MILL BLVD., SUITE 500 MORRISVILLE NC 27560 0 1 0 0 Chief Operating Officer Common Stock 2022-03-01 4 A 0 19564 0.00 A 90184 D Common Stock 2022-03-01 4 F 0 2841 17.78 D 87343 D Common Stock 2022-03-02 4 F 0 1384 18.11 D 85959 D Common Stock 2022-03-02 4 A 0 28194 0.00 A 114153 D Common Stock 2022-03-02 4 F 0 4151 18.11 D 110002 D The security represents restricted stock units granted to the reporting person. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. The shares underlying these restricted stock units vest in four equal annual installments beginning on March 1, 2023, subject to the reporting person's continuous service with the issuer as of the applicable vesting date. On November 8, 2021, the reporting person filed a Form 4 reporting the disposition of 8,621 shares. The correct number of shares was 3,506 shares, and the number of shares beneficially owned following that transaction was 70,620 shares. Amounts reported on this Form 4 have been adjusted accordingly. The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the non-reportable vesting and settlement of restricted stock units. Of the shares underlying this restricted stock unit award, one-half vested on March 2, 2022 and the remainder will vest on March 2, 2023, subject to the reporting person's continuous service with the issuer as of the vesting date. The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of the restricted stock unit award reported in footnote (5) herein. /s/ Brian F. Leaf, attorney-in-fact 2022-03-03