X0306 4 2021-05-17 0 0000351834 SunOpta Inc. STKL 0001664397 Barnett Jill SUNOPTA INC., 7301 OHMS LANE EDINA MN 55439 0 1 0 0 Chief Administrative Officer Common Shares 2021-05-17 4 S 0 11570 12.495 D 125497 D Common Shares 2021-05-18 4 S 0 10592 12.6549 D 114905 D Common Shares 2021-05-19 4 S 0 10590 12.3591 D 104315 D Represents the number of shares sold by the reporting person solely to cover the tax withholding obligations in connection with the settlement of the PSUs that vested on April 22, 2021, as previously reported. The transaction was executed in multiple trades at prices ranging from $12.35 to $12.62. The price reported reflects the average sale price. The reporting person undertakes to provide the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. The transaction was executed in multiple trades at prices ranging from $12.52 to $12.79. The price reported reflects the average sale price. The reporting person undertakes to provide the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. The transaction was executed in multiple trades at prices ranging from $12.11 to $12.67. The price reported reflects the average sale price. The reporting person undertakes to provide the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. /s/ Jill Barnett 2021-05-20