X0306 4 2019-07-26 0 0001540159 Edesa Biotech, Inc. EDSA 0001778981 MacDonald Sean Arthur C/O EDESA BIOTECH INC. 100 SPY COURT MARKHAM A6 L3R 5H6 ONTARIO, CANADA 1 0 0 0 Common Shares 2019-07-26 4 A 0 786 0 A 14369 D Represents additional common shares of Edesa Biotech, Inc. (formerly known as Stellar Biotechnologies, Inc.) (the "Issuer") issued pursuant to the post-closing adjustment contemplated by that certain Share Exchange Agreement, dated as of March 7, 2019, by and among the Issuer, Edesa Biotech, Inc. ("Edesa"), and the shareholders of Edesa. The closing of the share exchange transaction contemplated by the Share Exchange Agreement occurred on June 7, 2019, at which time the Issuer acquired all the outstanding capital shares of Edesa from the Edesa shareholders. All share numbers reflect the 1-for-6 reverse split of the Issuer's common shares which occurred on June 7, 2019. /s/Sean Arthur MacDonald 2019-07-30