Holder evidence
50
SEC ownership of CASELLA WASTE SYSTEMS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000911177.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Latest evidence
26 May 2026
- CIK
- 0000911177
- Symbol
- CWST on Nasdaq
- Location
- Rutland, VT
- SEC evidence mix
- 13D/G, 13F, and 3/4/5
- Lead holder
- BlackRock, Inc.
- Latest large-stake holder
- BlackRock, Inc.
- Latest evidence date
- 26 May 2026
Issuer identity
Ownership snapshot
Ownership snapshot
Top shareholders of CASELLA WASTE SYSTEMS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Evidence rows
50
Latest as of
26 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 14%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Rank 1 holder
BlackRock, Inc.
13D/G
13F
- Ownership
- 14%
- Position
- $874.48M
Rank 2 holder
VANGUARD GROUP INC
13D/G
- Ownership
- 11%
- Position
- $643.95M
Rank 3 holder
Conestoga Capital Advisors, LLC
13D/G
13F
- Ownership
- 5.5%
- Position
- $396.15M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
Company
|
14%
|
$874,479,914
8,928,731 shares
|
$0 | 31 Dec 2025 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
11%
|
$643,945,020
6,574,893 shares
|
$0 | 31 Dec 2025 |
| Conestoga Capital Advisors, LLC |
13D/G
13F
Conestoga Capital Advisors · Company
|
5.5%
|
$396,150,082
3,432,843 shares
|
$0 | 31 Dec 2024 |
| WASATCH ADVISORS LP |
13F
13D/G
Company
|
4.1%
from 13D/G
|
$204,873,335
2,582,220 shares
|
— | 31 Mar 2026 |
| Edmond R. Coletta |
3/4/5
PRESIDENT & CEO
|
0.22%
|
$12,620,428
140,118 shares
|
-$2,297,809 | 19 May 2026 |
| Shelley E. Sayward |
3/4/5
SENIOR VP & GENERAL COUNSEL
|
0.05%
|
$2,488,812
28,369 shares
|
-$191,151 | 12 Mar 2026 |
| Emily K. Nagle |
3/4/5
Director
|
0.03%
|
$2,026,256
21,356 shares
|
-$99,748 | 05 Nov 2025 |
| Paul Ligon |
3/4/5
SR VP of Sustainable Growth
|
0.03%
|
$1,889,804
18,374 shares
|
-$219,820 | 04 Aug 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$4,147,104.
Buys
$0
Insiders: 0
Sells
$4,147,104
Insiders: 9
Net
-$4,147,104
Shares: -44,588
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 44,588
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 20,207 | $0 | $1,798,999 | -$1,798,999 |
| 3-6 | 0 | 21,003 | $0 | $2,005,572 | -$2,005,572 |
| 6-9 | 0 | 1,378 | $0 | $122,712 | -$122,712 |
| 9-12 | 0 | 2,000 | $0 | $219,820 | -$219,820 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-19 of 19 reporting-owner rows connected to CASELLA WASTE SYSTEMS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
19
Lead holder
Edmond R. Coletta
Net 12M change
-$4,147,104
Latest report
26 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Edmond R. Coletta | President & Ceo | $12,620,428 | -$2,297,809 | -15% | Filing P/S | 19 May 2026 |
| Douglas R. Casella | VICE CHAIRMAN, BD OF DIRECTORS, Director | $10,268,813 | Mixed | 17 Mar 2026 | ||
| Edwin D. Johnson | President & Coo | $9,485,544 | Mixed | 03 Jun 2022 | ||
| James F. Callahan Jr. | Director | $6,398,822 | Mixed | 02 Jun 2021 | ||
| Christopher Heald | Vp & Chief Accounting Officer | $3,024,685 | Mixed | 15 Mar 2022 | ||
| John W. Casella | Director | $2,777,370 | -$865,989 | -24% | Mixed | 12 Mar 2026 |
| Shelley E. Sayward | Senior Vp & General Counsel | $2,488,812 | -$191,151 | -7.1% | Filing P/S | 12 Mar 2026 |
| Emily K. Nagle | Director | $2,026,256 | -$99,748 | -4.7% | Mixed | 05 Nov 2025 |
| Paul Ligon | SR VP of Sustainable Growth | $1,889,804 | -$219,820 | -10% | Mixed | 04 Aug 2025 |
| Joseph Doody | Director | $1,307,179 | Mixed | 05 Jun 2025 | ||
| Michael K. Burke | Director | $1,230,042 | -$201,826 | -14% | Filing P/S | 26 May 2026 |
| Michael Louis Battles | Director | $978,484 | Mixed | 05 Jun 2025 | ||
| Rose M. Kirk | Director | $926,197 | Mixed | 05 Jun 2025 | ||
| Sean Steves | Sr VP & COO of SW Ops | $823,125 | -$137,374 | -14% | Filing P/S | 12 Mar 2026 |
| Gary Sova | Director | $738,354 | Mixed | 05 Jun 2025 | ||
| William P. Hulligan | Director | $733,402 | Mixed | 05 Jun 2025 | ||
| Kevin J. Drohan | Vp & Chief Accounting Officer | $690,698 | -$74,892 | -9.8% | Filing P/S | 12 Mar 2026 |
| Bradford John Helgeson | Executive VP and CFO | $644,113 | -$58,495 | -8.3% | Filing P/S | 12 Mar 2026 |
| Christopher Alan Rains | Sr. VP & Chief Revenue Officer | $91,116 | Mixed | 16 Mar 2026 |
Recent insider transactions for CASELLA WASTE SYSTEMS INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael K. Burke | CWST | Class A Common Stock | Sale | -14.1% | $201,826 | $87.56 | -2,305 | 14,048 | 26 May 2026 | Direct |
| Edmond R. Coletta | CWST | Class A Common Stock | Sale | -8.19% | $1,119,523 | $89.56 | -12,500 | 140,118 | 19 May 2026 | Direct |
| Douglas R. Casella | CWST | Class B Common Stock | Gift | 29.2% | 40,000 | 177,000 | 18 Mar 2026 | By SLAT 2 | ||
| Douglas R. Casella | CWST | Class B Common Stock | Gift | -23.7% | -40,000 | 129,000 | 18 Mar 2026 | Direct | ||
| Douglas R. Casella | CWST | Class B Common Stock | Gift | 25.2% | 33,000 | 164,000 | 17 Mar 2026 | By SLAT | ||
| Douglas R. Casella | CWST | Class B Common Stock | Gift | -57.8% | -33,000 | 24,100 | 17 Mar 2026 | By Spouse | ||
| Christopher Alan Rains | CWST | Class A Common Stock | Award | 989 | 989 | 16 Mar 2026 | Direct | |||
| John W. Casella | CWST | Class A Common Stock | Sale | -5.36% | $153,071 | $87.77 | -1,744 | 30,795 | 16 Mar 2026 | Direct |
| Edmond R. Coletta | CWST | Class A Common Stock | Sale | -0.64% | $86,756 | $87.81 | -988 | 152,618 | 16 Mar 2026 | Direct |
| Kevin J. Drohan | CWST | Class A Common Stock | Sale | -1.07% | $7,457 | $87.73 | -85 | 7,873 | 16 Mar 2026 | Direct |
| Sean Steves | CWST | Class A Common Stock | Sale | -2.06% | $17,297 | $87.80 | -197 | 9,375 | 16 Mar 2026 | Direct |
| Shelley E. Sayward | CWST | Class A Common Stock | Sale | -1.26% | $31,758 | $87.73 | -362 | 28,369 | 16 Mar 2026 | Direct |
| Bradford John Helgeson | CWST | Class A Common Stock | Sale | -5.23% | $35,531 | $87.73 | -405 | 7,342 | 16 Mar 2026 | Direct |
| John W. Casella | CWST | Class A Common Stock | Sale | -2.87% | $86,728 | $90.06 | -963 | 32,539 | 12 Mar 2026 | Direct |
| John W. Casella | CWST | Class A Common Stock | Award | 19.7% | 5,513 | 33,502 | 12 Mar 2026 | Direct | ||
| Edmond R. Coletta | CWST | Class A Common Stock | Sale | -0.24% | $33,855 | $89.80 | -377 | 153,606 | 12 Mar 2026 | Direct |
| Edmond R. Coletta | CWST | Class A Common Stock | Award | 4.69% | 6,892 | 153,983 | 12 Mar 2026 | Direct | ||
| Kevin J. Drohan | CWST | Class A Common Stock | Sale | -0.69% | $4,924 | $89.52 | -55 | 7,958 | 12 Mar 2026 | Direct |
| Kevin J. Drohan | CWST | Class A Common Stock | Award | 7.38% | 551 | 8,013 | 12 Mar 2026 | Direct | ||
| Sean Steves | CWST | Class A Common Stock | Sale | -1% | $8,702 | $89.71 | -97 | 9,572 | 12 Mar 2026 | Direct |
| Shelley E. Sayward | CWST | Class A Common Stock | Sale | -0.45% | $11,573 | $89.71 | -129 | 28,731 | 12 Mar 2026 | Direct |
| Shelley E. Sayward | CWST | Class A Common Stock | Award | 6.08% | 1,654 | 28,860 | 12 Mar 2026 | Direct | ||
| Bradford John Helgeson | CWST | Class A Common Stock | Award | 55.2% | 2,756 | 7,747 | 12 Mar 2026 | Direct | ||
| Sean Steves | CWST | Class A Common Stock | Sale | -11% | $111,375 | $92.89 | -1,199 | 9,669 | 27 Feb 2026 | Direct |
| Kevin J. Drohan | CWST | Class A Common Stock | Sale | -8.3% | $62,512 | $92.61 | -675 | 7,462 | 27 Feb 2026 | Direct |
| Edmond R. Coletta | CWST | Class A Common Stock | Sale | -2.53% | $357,184 | $93.70 | -3,812 | 147,091 | 27 Feb 2026 | Direct |
| John W. Casella | CWST | Class A Common Stock | Sale | -19.4% | $626,191 | $93.10 | -6,726 | 27,989 | 27 Feb 2026 | Direct |
| Shelley E. Sayward | CWST | Class A Common Stock | Sale | -5.52% | $147,820 | $92.91 | -1,591 | 27,206 | 27 Feb 2026 | Direct |
| Sean Steves | CWST | Class A Common Stock | Award | 46.2% | 3,433 | 10,868 | 26 Feb 2026 | Direct | ||
| Kevin J. Drohan | CWST | Class A Common Stock | Award | 43.1% | 2,452 | 8,137 | 26 Feb 2026 | Direct | ||
| Edmond R. Coletta | CWST | Class A Common Stock | Award | 6.95% | 9,810 | 150,903 | 26 Feb 2026 | Direct | ||
| John W. Casella | CWST | Class A Common Stock | Award | 204.1% | 23,299 | 34,715 | 26 Feb 2026 | Direct | ||
| Shelley E. Sayward | CWST | Class A Common Stock | Award | 19% | 4,598 | 28,797 | 26 Feb 2026 | Direct | ||
| Douglas R. Casella | CWST | Class A Common Stock | Gift | -3.59% | -3,900 | 104,848 | 08 Dec 2025 | Direct | ||
| Edmond R. Coletta | CWST | Class A Common Stock | Sale | -4.73% | $700,490 | $100.07 | -7,000 | 141,093 | 08 Dec 2025 | Direct |
| Edmond R. Coletta | CWST | Class A Common Stock | Gift | -1.33% | -2,000 | 148,093 | 08 Dec 2025 | Direct | ||
| Bradford John Helgeson | CWST | Class A Common Stock | Sale | -4.99% | $22,964 | $87.65 | -262 | 4,991 | 07 Nov 2025 | Direct |
| Emily K. Nagle | CWST | Class A Common Stock | Gift | -6.71% | -1,130 | 15,709 | 05 Nov 2025 | Direct | ||
| Emily K. Nagle | CWST | Class A Common Stock | Sale | -16.5% | $99,748 | $89.38 | -1,116 | 5,647 | 04 Nov 2025 | See Footnote |
| Paul Ligon | CWST | Class A Common Stock | Sale | -5.17% | $102,840 | $102.84 | -1,000 | 18,347 | 04 Aug 2025 | Direct |
| William P. Hulligan | CWST | Class A Common Stock | Award | 23.6% | 1,215 | 6,368 | 05 Jun 2025 | Direct | ||
| Joseph Doody | CWST | Class A Common Stock | Award | 17% | 1,649 | 11,350 | 05 Jun 2025 | Direct | ||
| Emily K. Nagle | CWST | Class A Common Stock | Award | 7.78% | 1,215 | 16,839 | 05 Jun 2025 | Direct | ||
| Gary Sova | CWST | Class A Common Stock | Award | 23.4% | 1,215 | 6,411 | 05 Jun 2025 | Direct | ||
| Michael K. Burke | CWST | Class A Common Stock | Award | 8.03% | 1,215 | 16,353 | 05 Jun 2025 | Direct | ||
| Michael L. Battles | CWST | Class A Common Stock | Award | 16.7% | 1,215 | 8,496 | 05 Jun 2025 | Direct | ||
| Rose M. Kirk | CWST | Class A Common Stock | Award | 17.8% | 1,215 | 8,042 | 05 Jun 2025 | Direct | ||
| Paul Ligon | CWST | Class A Common Stock | Sale | -4.91% | $116,980 | $116.98 | -1,000 | 19,347 | 03 Jun 2025 | Direct |
* indicates a reported price that failed the local validity check.