---
schema_version: "secwatch.filing_event.v1"
accession: "0000911177-26-000052"
form_type: "8-K"
ticker: "CWST"
cik: "0000911177"
company_name: "CASELLA WASTE SYSTEMS INC"
filed_at: "2026-10-01T12:21:54+00:00"
generated_at: "2026-10-12T14:16:45.052296+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Casella to close NCES Landfill Dec 31, 2026, a year early; Q4 amortization to rise

## Summary
- North Country Environmental Services landfill in Bethlehem, New Hampshire will accept municipal solid waste for the last time on December 31, 2026, versus prior expectation of end-2027.
- Company said it moved up the closure date after evaluating remaining permitted airspace, current and projected fill rates, and other operational factors.
- The earlier Closure Date will result in a higher level of landfill amortization expense in the fourth quarter of 2026 than previously anticipated.
- Casella said that added amortization expense is not expected to materially affect Q4 2026 or fiscal year ending December 31, 2026 financial results.
- Customers, regulators and the Bethlehem host community were notified on October 1, 2026, per the Regulation FD disclosure.

## SEC filing metadata
- accession: 0000911177-26-000052
- form_type: 8-K
- ticker: CWST
- cik: 0000911177
- company_name: CASELLA WASTE SYSTEMS INC
- filed_at: 2026-10-01T12:21:54+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/911177/000091117726000052/0000911177-26-000052-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/911177/000091117726000052/cwst-20261001.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000911177-26-000052
- JSON: https://secwatch.observer/filing/0000911177-26-000052.json
- Plain text: https://secwatch.observer/filing/0000911177-26-000052.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.