X0508 4 2026-02-20 0 0001092699 SPS COMMERCE INC SPSC 0001489097 Nelson Kimberly K. 333 SOUTH SEVENTH STREET SUITE 1000 MINNEAPOLIS MN 55402 0 1 0 0 EVP & CFO 1 Common Stock 2026-02-20 4 S 0 3700 58.0868 D 148052 D Common Stock 2026-02-20 4 S 0 1200 59.1854 D 146852 D Common Stock 2026-02-20 4 S 0 1400 59.7027 D 145452 D Common Stock 2026-02-20 4 A 0 39689 0 A 185141 D Common Stock 476.375 I By 401(k) Plan Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2025. Reflects the weighted average price of 3,700 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 20, 2026, with sales prices ranging from $57.55 to $58.46 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 1,200 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 20, 2026, with sales prices ranging from $58.55 to $59.51 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 1,400 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on February 20, 2026, with sales prices ranging from $59.55 to $59.91 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. Restricted Stock Unit award that vests as to 25% of the units on each anniversary of the date of the grant. /s/ Jonathan R. Zimmerman, attorney-in-fact for Kimberly K. Nelson 2026-02-24