SPS COMMERCE INC 10-Q

Item 5. Other Information Insider Adoption or Termination of Trading Arrangements During the three months ended March 31, 2026, the following officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted written plans for the sale of our securities that are intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act: Name Title Adoption Date Earliest Sale Date Expiration or Termination Date Aggregate Number of Shares of the Company's Common Stock to be Sold (1) Kimberly Nelson Former Chief Financial Officer February 23, 2026 May 25, 2026 March 15, 2027 19,453 Eduardo Rosini Executive Vice President & Chief Commercial Officer March 13, 2026 December 1, 2026 March 31, 2027 47,595 (1) The number of shares is the maximum number of shares to be sold but the actual activity may be lower. Transaction(s) may be contingent upon future events such as performance factors, tax withholding obligations, and/or future market price(s). There were no other Rule 10b5-1(c) trading arrangements or non-Rule 10b5-1(c) trading arrangements adopted, modified or terminated by the Company's officers and directors during the three months ended March 31, 2026. Item 6. Exhibits Number Description 3.1 Tenth Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed with the SEC on May 16, 2024). 3.2 Amended and Restated Bylaws (incorporated by reference to Exhibit 3.2 to our Form 10-K filed with the SEC on February 21, 2023). 10.1 Form of Performance Stock Unit Agreement under 2010 Equity Incentive Plan, amended as of April 2026 (incorporated by reference to Exhibit 10.1 to our Form 8-K filed with the SEC on April 14, 2026). 31.1 Certification of Principal Executive Officer pursuant to Rules 13a-14(a) under the Securities Exchange Act of 1934, as amended (filed herewith). 31.2 Certification of Principal Financial Officer pursuant to Rules 13a-14(a) under the Securities Exchange Act of 1934, as amended (filed herewith). 32.1 Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith). 101 Interactive Data Files Pursuant to Rule 405 of Regulation S-T (filed herewith). The XBRL instance document does not appear in the Interactive Data File because its tags are embedded within the Inline XBRL document. 104 The cover page from the Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, formatted in Inline XBRL. SPS COMMERCE, INC. 28 Form 10-Q for the Quarterly Period ended March 31, 2026 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Date: April 30, 2026 SPS COMMERCE, INC. /s/ JOSEPH DEL PRETO Joseph Del Preto Executive Vice President and Chief Financial Officer (principal financial and accounting officer) SPS COMMERCE, INC. 29 Form 10-Q for the Quarterly Period ended March 31, 2026