CLW ▼ -2.5% - Clearwater Paper Corporation $CLW - Clearwater Paper Releases 2026 Sustainability Report Highlighting Progress and Achievements Clearwater Paper fell 2.5% today following the release of its 2026 sustainability report. The stock's decline suggests investors may have found the reported progress or achievements insufficient to offset broader market concerns, or the timing coincided with sector-wide pressure on paper and packaging companies. 08-SEP-2026 04:09 PM ET