Casella Waste Systems Inc
Ownership
Ownership Structure
Who owns Casella Waste Systems Inc (CWST)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.4% of the shares are freely tradable; institutional investors hold 123.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 14.22 | 9,047,272 | -0.1 | 03/31/2026 |
| Wasatch Advisors LP | 5.55 | 3,531,594 | +36.8 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.27 | 3,353,241 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.40 | 2,798,927 | +0.0 | 03/31/2026 |
| State Street Corp | 3.75 | 2,389,197 | +3.6 | 03/31/2026 |
| Conestoga Capital Advisors, LLC | 3.67 | 2,336,156 | -16.7 | 06/30/2026 |
| Capital Research & Mgmt Co - Division 3 | 3.23 | 2,054,399 | +5.2 | 06/30/2026 |
| Capital Research Global Investors | 3.19 | 2,028,646 | -12.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.00 | 3,817,128 | +0.0 | 08/31/2026 |
| American Funds SMALLCAP World A | 4.77 | 3,036,412 | -13.5 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Casella Douglas R | VICE CHAIRMAN, BD OF DIRECTORS | 90,141 | 7,995,507 $ | Aug 14, 2026 | direct |
| Burke Michael K | Director | 13,641 | 1,209,957 $ | Sep 3, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 3, 2026 | Burke Michael K | Director | Sell | 1,100 | 95.26 | 104,786 |
| Aug 26, 2026 | Burke Michael K | Director | Sell | 1,100 | 92.99 | 102,289 |
| Aug 14, 2026 | Casella Douglas R | VICE CHAIRMAN, BD OF DIRECTORS | Sell | 1,343 | 91.12 | 122,374 |
| Aug 13, 2026 | Casella Douglas R | VICE CHAIRMAN, BD OF DIRECTORS | Sell | 13,319 | 91.07 | 1,212,961 |
| Aug 13, 2026 | Casella Douglas R | VICE CHAIRMAN, BD OF DIRECTORS | Sell | 1,838 | 90.89 | 167,056 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.