X0306 4 2022-02-22 0 0001092699 SPS COMMERCE INC SPSC 0001489095 Black Archie C. 333 SOUTH SEVENTH STREET SUITE 1000 MINNEAPOLIS MN 55402 1 1 0 0 CEO Common Stock 2022-02-22 4 S 0 4970 122.8022 D 79919 D Common Stock 2022-02-22 4 S 0 6402 123.6135 D 73517 D Common Stock 2022-02-22 4 S 0 2631 124.7411 D 70886 D Common Stock 2022-02-22 4 S 0 305 125.52 D 70581 D Common Stock 400 I By Son I Common Stock 400 I By Son II Common Stock 400 I By Son III Common Stock 400 I By Son IV Common Stock 345.374 I By 401(k) Plan Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 3, 2021. Reflects the weighted average price of 4,970 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 22, 2022 with sales prices ranging from $122.29 to $123.26 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price. Reflects the weighted average price of 6,402 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 22, 2022 with sales prices ranging from $123.29 to $124.25 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price. Reflects the weighted average price of 2,631 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 22, 2022 with sales prices ranging from $124.29 to $125.25 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price. Reflects the weighted average price of 305 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 22, 2022 with sales prices ranging from $125.50 to $125.55 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price. /s/ Jonathan R. Zimmerman, Attorney-in-Fact for Archie C. Black 2022-02-24