CWST insider buying and SEC filings, explained
Casella Waste Systems Inc. · CIK 911177
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$5.1M
Planned sales (10b5-1)
$501K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 3, 2026 | Sale | Michael K. Burke (Director) sold 1,100 shares at about $95.26 ($105K). Holdings down 7% to 13,641 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 3, 2026 |
| Aug 26, 2026 | Sale | Michael K. Burke (Director) sold 1,100 shares at about $92.99 ($102K). Holdings down 7% to 14,741 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 26, 2026 |
| Aug 13–14, 2026 | Sale | Douglas R. Casella (Director and Vice Chairman, Bd of Directors) sold 16,500 shares between Aug 13 and Aug 14 at about $91.05 ($1.5M). Holdings down 15% to 90,141 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| May 26, 2026 | Sale | Michael K. Burke (Director) sold 2,305 shares at about $87.56 ($202K). Holdings down 14% to 14,048 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 19, 2026 | Sale | Edmond Coletta (CEO) sold 12,500 shares at about $89.56 ($1.1M). Holdings down 8% to 140,118 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 22, 2026 |
| Mar 12–16, 2026 | Planned (10b5-1) | Sean Steves (President / COO) sold 294 shares between Mar 12 and Mar 16 at about $88.43 ($26K), marked as a 10b5-1 plan trade. Holdings down 3% to 9,375 shares. | SEC filing Filed Mar 16, 2026 |
| Mar 12–16, 2026 | Planned (10b5-1) | Kevin Drohan (VP & Chief Accounting Officer) sold 140 shares between Mar 12 and Mar 16 at about $88.43 ($12K), marked as a 10b5-1 plan trade. Holdings down 2% to 7,873 shares. | SEC filing Filed Mar 16, 2026 |
| Mar 12–16, 2026 | Planned (10b5-1) | Shelley E. Sayward (Senior VP & General Counsel) sold 491 shares between Mar 12 and Mar 16 at about $88.25 ($43K), marked as a 10b5-1 plan trade. Holdings down 2% to 28,369 shares. | SEC filing Filed Mar 16, 2026 |
| Mar 16, 2026 | Planned (10b5-1) | Bradford John Helgeson (CFO) sold 405 shares at $87.73 ($36K), marked as a 10b5-1 plan trade. Holdings down 5% to 7,342 shares. | SEC filing Filed Mar 16, 2026 |
| Mar 12–16, 2026 | Planned (10b5-1) | Edmond Coletta (CEO) sold 1,365 shares between Mar 12 and Mar 16 at about $88.36 ($121K), marked as a 10b5-1 plan trade. Holdings down 1% to 152,618 shares. | SEC filing Filed Mar 16, 2026 |
| Mar 12–16, 2026 | Planned (10b5-1) | John W. Casella (Director) sold 2,707 shares between Mar 12 and Mar 16 at about $88.58 ($240K), marked as a 10b5-1 plan trade. Holdings down 8% to 30,795 shares. | SEC filing Filed Mar 16, 2026 |
| Feb 27, 2026 | Sale | Sean Steves (President / COO) sold 1,199 shares at about $92.89 ($111K). Holdings down 11% to 9,669 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Feb 27, 2026 | Sale | Kevin Drohan (VP & Chief Accounting Officer) sold 675 shares at $92.61 ($63K). Holdings down 8% to 7,462 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Feb 27, 2026 | Sale | Shelley E. Sayward (Senior VP & General Counsel) sold 1,591 shares at $92.91 ($148K). Holdings down 6% to 27,206 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Feb 27, 2026 | Sale | Edmond Coletta (President / COO) sold 3,812 shares at about $93.70 ($357K). Holdings down 3% to 147,091 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Feb 27, 2026 | Sale | John W. Casella (CEO and Director) sold 6,726 shares at about $93.10 ($626K). Holdings down 19% to 27,989 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Dec 8, 2025 | Sale | Edmond Coletta (President / COO) sold 7,000 shares at about $100.07 ($700K). Holdings down 5% to 141,093 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 9, 2025 |
| Nov 7, 2025 | Planned (10b5-1) | Bradford John Helgeson (CFO) sold 262 shares at $87.65 ($23K), marked as a 10b5-1 plan trade. Holdings down 5% to 4,991 shares. | SEC filing Filed Nov 10, 2025 |
| Nov 4, 2025 | Sale | Emily Nagle Green (Director) sold 1,116 shares indirectly at $89.38 ($100K). Indirect holdings down 17% to 5,647 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 6, 2025 |
26 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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