0000911177 2023-06-01 2023-06-01 0000911177 false 8-K 2023-06-01 Casella Waste Systems, Inc. DE 000-23211 03-0338873 25 Greens Hill Lane, Rutland, VT 05701 802 775-0325 false false false false Class A common stock, $0.01 par value per share CWST NASDAQ false