X0306 4 2020-09-18 0000819050 Brickell Biotech, Inc. BBI 0001758842 McAvoy David R. C/O BRICKELL BIOTECH, INC. 5777 CENTRAL AVENUE, SUITE 102 BOULDER CO 80301 0 1 0 0 General Counsel and CCO Common Stock 2020-09-18 4 P 0 16526 .8298 A 75883 D Common Stock 2020-09-18 4 P 0 6000 0.8398 A 6000 I By spouse Represents the purchase of 16,526 shares in multiple transactions, ranging in price from $0.8224 to $0.8429 per share, resulting in a weighted average purchase price of $0.8298. The reporting person will provide, upon request by the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each price within the range. /s/ Christine G. Long, Attorney-in-Fact for David R. McAvoy (power of attorney previously filed) 2020-09-21