CWST ▼ -1.1% - Casella Waste Systems, Inc. $CWST - Casella Releases 2026 Sustainability Report Highlighting Growth and Measurable Progress Casella Waste Systems released its 2026 sustainability report, highlighting growth and measurable progress across its operations. The stock declined 1.1% today, though the headline does not specify a particular catalyst within the report that would explain the intraday move. 23-SEP-2026 04:05 PM ET