Casella Waste Systems Inc
CWST- Exchange
- Nasdaq
- Industry
- Refuse Systems
- SEC CIK
- 0000911177
In the last 90 days, Casella Waste Systems Inc insiders filed 0 open-market purchases and 3 sales; 418 institutions reported holding it in 13F filings for Q2 2026, worth $7.49B in total; no superinvestor holds it.
Holders of 5% or more of CWST
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Casella Waste Systems Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Conestoga Capital Advisors, LLC | 13G/A | 5.51%3.43M shares | – | Jan 10, 20251 filing | Jan 10, 2025 | SEC |
| Wasatch Advisors Inc | 13G | 5.50%3.41M shares | New | Aug 14, 20251 filing | Aug 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Casella Waste Systems Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 202512:43 PM ET | Wasatch Advisors Inc | 13G | 5.50%3.41M shares | New | Jun 30, 2025 | SEC |
| Jan 10, 202511:25 AM ET | Conestoga Capital Advisors, LLC | 13G/A | 5.51%3.43M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Casella Waste Systems Inc shares.
No Form 144 notices for Casella Waste Systems Inc are on file.