NRUC – 424B3 February 4, 2026 In SEC https://www.sec.gov/Archives/edgar/data/70502/000007050226000081/0000070502-26-000081-index.htm #NRUC Northern Trust’s Award-Winning Start to 2026 Gridware Study Finds Active Grid Response Technology, Enabled by Gridscopes, Improves Power Reliability While Mitigating Wildfire Ignitions