0001409375 2026-09-15 2026-09-15 false 0001409375 8-K 2026-09-15 ORION ENERGY SYSTEMS, INC. WI 01-33887 39-1847269 2210 Woodland Drive Manitowoc WI 54220 920 892-9340 false false false false Common stock, no par value OESX NASDAQ false