X0306 4 2021-06-09 0 0001703057 AbCellera Biologics Inc. ABCL 0001834411 Booth Andrew C/O ABCELLERA BIOLOGICS INC. 2215 YUKON STREET VANCOUVER A1 V5Y 0A1 BRITISH COLUMBIA, CANADA 0 1 0 0 Chief Financial Officer Common Shares 2021-06-09 4 S 0 1200000 25.50 D 0 D Common Shares 116959 I By spouse On June 9, 2021, the shares were sold in connection with a private sale transaction at a per share price of $25.50. /s/ Tryn Stimart, attorney-in-fact 2021-06-10