Exhibit 99.1 Contact: Investor Relations The Blueshirt Group Irmina Blaszczyk SPSC@blueshirtgroup.com SPS Commerce Reports First Quarter 2026 Financial Results First quarter 2026 revenue grew 6% and recurring revenue grew 7% from the first quarter of 2025 MINNEAPOLIS, April 30, 2026 (GLOBE NEWSWIRE) -- SPS Commerce, Inc. (NASDAQ: SPSC), the leading intelligent supply chain network, today announced financial results for the first quarter ended March 31, 2026. Financial Highlights First Quarter 2026 Financial ...