---
schema_version: "secwatch.filing_event.v1"
accession: "0000911177-26-000035"
form_type: "8-K"
ticker: "CWST"
cik: "0000911177"
company_name: "CASELLA WASTE SYSTEMS INC"
filed_at: "2026-07-01T12:27:22+00:00"
generated_at: "2026-07-01T12:30:10.402913+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Casella Waste Systems appoints Damian A. Ribar as EVP and COO

## Summary
- Damian A. Ribar appointed EVP and COO effective July 20, 2026; previously Division VP at Waste Connections.
- Base salary $500,000; cash bonus eligible up to 85% of base.
- Annual equity awards: $200K RSU (3-yr vest) and $600K performance PSU (3-yr target).
- One-time option for 25,000 shares vesting over 3 years; relocation assistance with clawback.

## SEC filing metadata
- accession: 0000911177-26-000035
- form_type: 8-K
- ticker: CWST
- cik: 0000911177
- company_name: CASELLA WASTE SYSTEMS INC
- filed_at: 2026-07-01T12:27:22+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/911177/000091117726000035/0000911177-26-000035-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/911177/000091117726000035/cwst-20260626.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000911177-26-000035
- JSON: https://secwatch.observer/filing/0000911177-26-000035.json
- Plain text: https://secwatch.observer/filing/0000911177-26-000035.txt

## Key facts
- Executive change
  Damian A. Ribar was appointed as Executive Vice President and Chief Operating Officer at CASELLA WASTE SYSTEMS INC.
  - Action: appointed
  - Role: Executive Vice President and Chief Operating Officer
  source text: On June 26, 2026, the Board of Directors (the “Board”) of Casella Waste Systems, Inc. (the “Company”) appointed Damian A. Ribar as Executive Vice President and Chief Operating Officer of the Company, effective as of the date of commencement of his employment, which is expected to be July 20, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/911177/000091117726000035/0000911177-26-000035-index.htm

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