X0306 4 2022-05-04 0 0001835256 Duckhorn Portfolio, Inc. NAPA 0001850132 Sullivan Sean B.A. 1201 DOWDELL LANE SAINT HELENA CA 94574 0 1 0 0 See Remarks Common Stock 2022-05-04 4 S 0 15608 20.1306 D 189355 D Common Stock 2022-05-05 4 S 0 4439 20.0134 D 184916 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.25. The Reporting Person undertakes to provide The Duckhorn Portfolio, Inc., any security holder of The Duckhorn Portfolio, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.10. The Reporting Person undertakes to provide The Duckhorn Portfolio, Inc., any security holder of The Duckhorn Portfolio, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Executive Vice President, Chief Administrative Officer and General Counsel. Mr. Sullivan is signing on behalf of the Reporting Person pursuant to a Limited Power of Attorney dated March 18, 2021, which was previously filed with the Securities and Exchange Commission. /s/ Sean Sullivan, as attorney-in-fact 2022-05-05