Comparable stake leader
WELLINGTON MANAGEMENT GROUP LLP
SEC ownership of CLEAN HARBORS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000822818.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 Aug 2026
- Public ticker
- CLH on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
WELLINGTON MANAGEMENT GROUP LLP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
WELLINGTON MANAGEMENT GROUP LLP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
14 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000822818
- Issuer location
- Norwell, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of CLEAN HARBORS 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.
Comparable stake leader
WELLINGTON MANAGEMENT GRO...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 Aug 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.8%
13D/G row: WELLINGTON MANAGEMENT GROUP LLP
Showing 1-8 of 50 holder rows.
Quick read
WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 6.8%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.
Comparable ownership
Top 5
WELLINGTON MANAGEMENT GROUP LLP
6.8%
FMR LLC
5.7%
D1 Capital Partners L.P.
2.5%
Alan S. Mckim
4.3%
Michael Louis Battles
0.18%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
6.8%
|
$1,062,090,414
3,576,062 shares
|
-$477,123,372 | 31 Mar 2026 |
| FMR LLC |
13F
13D/G
Company
|
5.7%
from 13D/G
|
$897,042,939
3,002,654 shares
|
— | 30 Jun 2026 |
| D1 Capital Partners L.P. |
13D/G
13F
Company
|
2.5%
|
$397,469,457
1,338,281 shares
|
-$428,749,497 | 31 Mar 2026 |
| Alan S. Mckim |
3/4/5
EXEC CHAIR, CTO., Director
|
4.3%
|
$675,956,456
2,262,615 shares
|
-$57,379,000 | 17 Jul 2026 |
| Michael Louis Battles |
3/4/5
CO-CEO, Director
|
0.18%
|
$28,188,556
94,355 shares
|
— | 01 Jul 2026 |
| Eric W. Gerstenberg |
3/4/5
CO-CEO
|
0.11%
|
$18,249,862
56,793 shares
|
-$1,940,781 | 14 Aug 2026 |
| Brian P. Weber |
3/4/5
EVP (CHESI)
|
0.09%
|
$14,314,307
47,914 shares
|
-$1,373,945 | 01 Jul 2026 |
| George L. Curtis |
3/4/5
EXEC. VICE PRESIDENT (CHESI)
|
0.08%
|
$13,231,936
44,291 shares
|
— | 01 Jul 2026 |
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: -$63,259,865.
Buys
$135,760
Insiders: 1
Sells
$63,395,624
Insiders: 9
Net
-$63,259,865
Shares: -220,316
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 460
Shares: 220,776
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 4,078 | $0 | $1,276,908 | -$1,276,908 |
| 3-6 | 460 | 109,019 | $135,760 | $31,872,313 | -$31,736,553 |
| 6-9 | 0 | 107,679 | $0 | $30,246,403 | -$30,246,403 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 29 reporting-owner rows connected to CLEAN HARBORS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
29
Largest Forms 3/4/5 holder
Alan S. Mckim
Net 12M change
-$63,259,865
Latest report
14 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Alan S. Mckim | EXEC CHAIR, CTO., Director | $675,956,456 | -$57,379,000 | -7.8% | Median | 17 Jul 2026 |
| Michael Louis Battles | CO-CEO, Director | $28,188,556 | Mixed | 01 Jul 2026 | ||
| Eric W. Gerstenberg | Co Ceo | $18,249,862 | -$1,940,781 | -9.6% | Filing P/S | 14 Aug 2026 |
| Brian P. Weber | Evp (Chesi) | $14,314,307 | -$1,373,945 | -8.8% | Median | 01 Jul 2026 |
| George L. Curtis | Exec. Vice President (Chesi) | $13,231,936 | Mixed | 01 Jul 2026 | ||
| Edward G. Galante | Director | $7,300,432 | Mixed | 20 May 2026 | ||
| Sharon M. Gabriel | Evp/Cio (Chesi) | $6,185,917 | -$998,528 | -14% | Median | 01 Jul 2026 |
| Rebecca Underwood | President & Evp Facilities | $5,488,933 | Median | 01 Jul 2026 | ||
| Eric J. Dugas | Evp Chief Financial Officer | $5,263,975 | -$784,292 | -13% | Mixed | 01 Jul 2026 |
| Michael J. Twohig | Evp (Chesi) | $5,147,223 | Mixed | 27 Mar 2023 | ||
| Thomas J. Shields | Director | $5,130,278 | Mixed | 25 May 2022 | ||
| Jeroen Diderich | EVP&President of Sales&Service | $4,631,262 | Mixed | 01 Jun 2026 | ||
| Robert Speights | President, Industrial Services | $3,726,671 | Filing P/S | 27 May 2025 | ||
| Lauren States | Director | $3,250,832 | -$225,804 | -6.5% | Filing P/S | 26 May 2026 |
| Charles H. Geer II | EVP, Industrial Services | $3,226,201 | Median | 01 Jul 2026 | ||
| John R. Welch | Director | $3,122,202 | -$204,803 | -6.2% | Mixed | 20 May 2026 |
| Loan Nguyen Mansy | President Env Sales & Service | $3,061,364 | Mixed | 21 Aug 2023 | ||
| Rod Marlin | Director | $2,930,084 | Mixed | 10 May 2021 | ||
| Robert J. Willett | Director | $2,875,328 | Mixed | 20 May 2026 | ||
| Andrea Robertson | Director | $2,819,495 | -$247,754 | -8.1% | Filing P/S | 03 Aug 2026 |
Recent insider transactions for CLEAN HARBORS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Eric W. Gerstenberg | CLH | Common Stock | Sale | -4.22% | $803,350 | $321.34 | -2,500 | 56,793 | 14 Aug 2026 | Direct |
| Andrea Robertson | CLH | Common Stock | Sale | -8.08% | $247,754 | $314.01 | -789 | 8,979 | 03 Aug 2026 | Direct |
| Alan S. Mckim | CLH | Common Stock | Tax liability | -4.03% | -1,265 | 30,154 | 17 Jul 2026 | Direct | ||
| Eric J. Dugas | CLH | Common Stock | Tax liability | -2.47% | -447 | 17,620 | 01 Jul 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Tax liability | -0.94% | -564 | 59,293 | 01 Jul 2026 | Direct | ||
| Michael Louis Battles | CLH | Common Stock | Tax liability | -1.08% | -1,032 | 94,355 | 01 Jul 2026 | Direct | ||
| George L. Curtis | CLH | Common Stock | Tax liability | -3.82% | -1,757 | 44,291 | 01 Jul 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Tax liability | -1.7% | -359 | 20,706 | 01 Jul 2026 | Direct | ||
| Brian P. Weber | CLH | Common Stock | Tax liability | -1.67% | -814 | 47,914 | 01 Jul 2026 | Direct | ||
| Rebecca Underwood | CLH | Common Stock | Tax liability | -1.66% | -311 | 18,373 | 01 Jul 2026 | Direct | ||
| Alan S. Mckim | CLH | Common Stock | Tax liability | -4.1% | -1,343 | 31,419 | 01 Jul 2026 | Direct | ||
| Charles H. Geer II | CLH | Common Stock | Tax liability | -0.37% | -40 | 10,799 | 01 Jul 2026 | Direct | ||
| Jeroen Diderich | CLH | Common Stock | Tax liability | -9.61% | -1,717 | 16,152 | 01 Jun 2026 | Direct | ||
| Lauren States | CLH | Common Stock | Sale | -6.49% | $225,804 | $286.19 | -789 | 11,359 | 26 May 2026 | Direct |
| Robert Willett | CLH | Common Stock | Award | 6.95% | 652 | 10,028 | 20 May 2026 | Direct | ||
| John R. Welch | CLH | Common Stock | Award | 6.37% | 652 | 10,889 | 20 May 2026 | Direct | ||
| Shelley Stewart Jr. | CLH | Common Stock | Award | 16.8% | 652 | 4,523 | 20 May 2026 | Direct | ||
| Lauren States | CLH | Common Stock | Award | 5.67% | 652 | 12,148 | 20 May 2026 | Direct | ||
| Andrea Robertson | CLH | Common Stock | Award | 7.15% | 652 | 9,768 | 20 May 2026 | Direct | ||
| Marcy L. Reed | CLH | Common Stock | Award | 12.8% | 652 | 5,733 | 20 May 2026 | Direct | ||
| Alison A. Quirk | CLH | Common Stock | Award | 21.9% | 652 | 3,630 | 20 May 2026 | Direct | ||
| John T. Preston | CLH | Common Stock | Award | 10.2% | 652 | 7,044 | 20 May 2026 | Direct | ||
| Edward G. Galante | CLH | Common Stock | Award | 2.63% | 652 | 25,461 | 20 May 2026 | Direct | ||
| Karyn Polito | CLH | Common Stock | Award | 18.8% | 652 | 4,127 | 20 May 2026 | Direct | ||
| Karyn Polito | CLH | Common Stock | Purchase | 15.3% | $135,760 | $295.13 | 460 | 3,475 | 11 May 2026 | Direct |
| Andrea Robertson | CLH | Common Stock | Gift | -3.62% | -342 | 9,116 | 11 May 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Sale | -1.64% | $293,000 | $293.00 | -1,000 | 59,857 | 18 Mar 2026 | Direct |
| Marcy L. Reed | CLH | Common Stock | Sale | -14.1% | $240,718 | $287.94 | -836 | 5,081 | 18 Mar 2026 | Direct |
| Brian P. Weber | CLH | Common Stock | Sale | -8.77% | $1,373,945 | $293.39 | -4,683 | 48,728 | 17 Mar 2026 | Direct |
| Eric J. Dugas | CLH | Common Stock | Disposed to Issuer | -6.83% | -1,324 | 18,067 | 13 Mar 2026 | Direct | ||
| Eric J. Dugas | CLH | Common Stock | Tax liability | -3.15% | -630 | 19,391 | 13 Mar 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Disposed to Issuer | -3.44% | -2,166 | 60,857 | 13 Mar 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Tax liability | -1.53% | -977 | 63,023 | 13 Mar 2026 | Direct | ||
| Brian P. Weber | CLH | Common Stock | Disposed to Issuer | -3.38% | -1,869 | 53,411 | 13 Mar 2026 | Direct | ||
| Brian P. Weber | CLH | Common Stock | Tax liability | -1.71% | -960 | 55,280 | 13 Mar 2026 | Direct | ||
| Rebecca Underwood | CLH | Common Stock | Disposed to Issuer | -6.98% | -1,401 | 18,684 | 13 Mar 2026 | Direct | ||
| Rebecca Underwood | CLH | Common Stock | Tax liability | -0.62% | -125 | 20,085 | 13 Mar 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Disposed to Issuer | -6.24% | -1,401 | 21,065 | 13 Mar 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Tax liability | -3.13% | -727 | 22,466 | 13 Mar 2026 | Direct | ||
| Robert W. Harrison | CLH | Common Stock | Disposed to Issuer | -5.25% | -368 | 6,648 | 13 Mar 2026 | Direct | ||
| Robert W. Harrison | CLH | Common Stock | Tax liability | -0.26% | -18 | 7,016 | 13 Mar 2026 | Direct | ||
| Charles H. Geer II | CLH | Common Stock | Disposed to Issuer | -1.27% | -139 | 10,839 | 13 Mar 2026 | Direct | ||
| George L. Curtis | CLH | Common Stock | Disposed to Issuer | -2.18% | -1,028 | 46,048 | 13 Mar 2026 | Direct | ||
| George L. Curtis | CLH | Common Stock | Tax liability | -0.74% | -350 | 47,065 | 13 Mar 2026 | Direct | ||
| Alan S. Mckim | CLH | Common Stock | Tax liability | -3.72% | -1,265 | 32,762 | 13 Mar 2026 | Direct | ||
| Michael Louis Battles | CLH | Common Stock | Disposed to Issuer | -2.22% | -2,166 | 95,387 | 13 Mar 2026 | Direct | ||
| Michael Louis Battles | CLH | Common Stock | Tax liability | -1.16% | -1,148 | 97,538 | 13 Mar 2026 | Direct | ||
| Alan S. Mckim | CLH | Common Stock | Sale | -4.62% | $29,265,000 | $292.65 | -100,000 | 2,065,368 | 04 Mar 2026 | McKim 2007 Trust |
| Eric W. Gerstenberg | CLH | Common Stock | Sale | -3.76% | $699,650 | $279.86 | -2,500 | 64,000 | 23 Feb 2026 | Direct |
| Eric J. Dugas | CLH | Common Stock | Sale | -12.2% | $784,292 | $281.31 | -2,788 | 20,021 | 20 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.