Quick Takeaways
- CLH - CLEAN HARBORS INC has 29 insiders with reported activity on this page.
- Net insider value flow over the last year: -$87,710,396.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 29 Insiders of CLEAN HARBORS INC
- Symbol
- CLH on NYSE
- Location
- Norwell, MA
What Changed
- Buy value: $467,000; sell value: $88,177,396.
- Net share flow: -330,646.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$87,710,396.
Buys
$467,000
Shares: 2,000
Insiders: 1
Sells
$88,177,396
Shares: 332,646
Insiders: 11
Net
-$87,710,396
Shares: -330,646
Insiders: -10
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 216,097 | $0 | $61,973,936 | -$61,973,936 |
| 3-6 | 0 | 601 | $0 | $144,781 | -$144,781 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 2,000 | 115,948 | $467,000 | $26,058,679 | -$25,591,679 |
CLEAN HARBORS INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Alan S. Mckim | EXEC CHAIR, CTO., Director | $636,119,921 | -$79,825,950 | -11% | Mixed | 13 Mar 2026 |
| Michael Louis Battles | CO-CEO, Director | $26,786,577 | +$467,000 | +1.8% | Mixed | 13 Mar 2026 |
| Brian P. Weber | Evp (Chesi) | $14,296,307 | -$2,063,406 | -13% | Filing P/S | 13 Mar 2026 |
| George L. Curtis | Exec. Vice President (Chesi) | $12,931,199 | Mixed | 13 Mar 2026 | ||
| Eric W. Gerstenberg | Co Ceo | $11,390,961 | -$2,956,388 | -21% | Filing P/S | 18 Mar 2026 |
| Sharon M. Gabriel | Evp/Cio (Chesi) | $5,915,473 | -$998,528 | -14% | Mixed | 13 Mar 2026 |
| Rebecca Underwood | President & Evp Facilities | $5,246,840 | Mixed | 13 Mar 2026 | ||
| Michael J. Twohig | Evp (Chesi) | $5,147,223 | Mixed | 27 Mar 2023 | ||
| Thomas J. Shields | Director | $5,130,278 | Mixed | 25 May 2022 | ||
| Edward G. Galante | Director | $4,814,434 | Mixed | 21 May 2025 | ||
| Jeroen Diderich | EVP&President of Sales&Service | $4,186,640 | Mixed | 01 Feb 2026 | ||
| Eric J. Dugas | Evp Chief Financial Officer | $3,925,582 | -$784,292 | -17% | Mixed | 13 Mar 2026 |
| Robert Speights | President, Industrial Services | $3,726,671 | -$233,517 | -5.9% | Filing P/S | 27 May 2025 |
| Loan Nguyen Mansy | President Env Sales & Service | $3,061,364 | Mixed | 21 Aug 2023 | ||
| Charles H. Geer II | EVP, Industrial Services | $3,043,807 | Mixed | 13 Mar 2026 | ||
| Rod Marlin | Director | $2,930,084 | Mixed | 10 May 2021 | ||
| John R. Welch | Director | $2,795,417 | -$490,440 | -15% | Filing P/S | 19 Feb 2026 |
| Lauren States | Director | $2,669,601 | -$189,078 | -6.6% | Mixed | 13 Nov 2025 |
| Andrea Robertson | Director | $2,219,887 | -$195,323 | -8.1% | Mixed | 05 Aug 2025 |
| Robert W. Harrison | Evp, Ehs | $1,866,891 | Mixed | 13 Mar 2026 | ||
| Robert Willett | Director | $1,819,506 | Mixed | 21 May 2025 | ||
| Melkeya McDuffie | Evp, Human Resources Officer | $1,800,467 | Mixed | 24 May 2023 | ||
| Marcy L. Reed | Director | $1,463,023 | -$240,718 | -14% | Filing P/S | 18 Mar 2026 |
| John T. Preston | Director | $1,240,431 | Mixed | 21 May 2025 | ||
| Eugene G. Banucci | Director | $998,515 | Mixed | 09 Jun 2023 | ||
| Shelley Stewart Jr. | Director | $751,206 | Mixed | 21 May 2025 | ||
| Alison A. Quirk | Director | $666,148 | -$199,755 | -23% | Filing P/S | 05 Jun 2025 |
| Karyn Polito | Director | $585,090 | Mixed | 21 May 2025 | ||
| Jeffrey H. Knapp | Evp Hr (Chesi) | $508,890 | Mixed | 23 Nov 2021 |
Top shareholders of CLEAN HARBORS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
|
Company |
9.7%
|
5,182,538
|
$1,316,779,255 | -$160,298,310 | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
8.6%
|
4,601,386
|
$1,078,932,990 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
8.4%
|
4,489,676
|
$1,052,739,229 | — | 31 Dec 2025 | |
| D1 Capital Partners L.P. |
13D/G
13F
|
Company |
5.2%
|
2,781,882
|
$706,820,579 | $0 | 31 Dec 2025 | |
| Alan S. Mckim |
3/4/5
|
EXEC CHAIR, CTO., Director |
4.2%
|
2,265,223
|
$636,119,921 | -$79,825,950 | 13 Mar 2026 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
4.4%
|
2,376,088
|
$557,145,885 | — | 31 Dec 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
3.5%
|
1,885,730
|
$442,291,801 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.8%
|
1,503,096
|
$352,445,950 | — | 31 Dec 2025 | |
| LONE PINE CAPITAL LLC |
13F
|
Company |
2.6%
|
1,378,125
|
$323,142,750 | — | 31 Dec 2025 | |
| Clearbridge Investments, LLC |
13F
|
Company |
2.5%
|
1,329,426
|
$311,723,872 | — | 31 Dec 2025 | |
| SNYDER CAPITAL MANAGEMENT L P |
13F
|
Company |
2.1%
|
1,150,188
|
$269,696,082 | — | 31 Dec 2025 | |
| NORDEA INVESTMENT MANAGEMENT AB |
13F
|
Company |
1.9%
|
1,040,594
|
$246,724,837 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.7%
|
917,779
|
$215,247,172 | — | 31 Dec 2025 | |
| BESSEMER GROUP INC |
13F
|
Company |
1.7%
|
915,280
|
$214,615,000 | — | 31 Dec 2025 | |
| Select Equity Group, L.P. |
13F
|
Company |
1.6%
|
849,499
|
$199,190,526 | — | 31 Dec 2025 | |
| Durable Capital Partners LP |
13F
|
Company |
1.6%
|
834,763
|
$195,735,228 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
1.3%
|
707,994
|
$166,010,432 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.2%
|
649,075
|
$152,195,106 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.2%
|
619,612
|
$145,297,392 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
1.1%
|
595,465
|
$139,624,634 | — | 31 Dec 2025 | |
| Palestra Capital Management LLC |
13F
|
Company |
1.1%
|
569,991
|
$133,651,490 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1%
|
556,202
|
$130,418,244 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.92%
|
492,786
|
$115,548,461 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.89%
|
477,440
|
$111,950,131 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.85%
|
456,800
|
$107,110,464 | — | 31 Dec 2025 | |
| DAVENPORT & Co LLC |
13F
|
Company |
0.79%
|
423,069
|
$99,905,839 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.77%
|
411,064
|
$96,386,287 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.74%
|
398,460
|
$93,430,973 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.7%
|
372,146
|
$87,260,779 | — | 31 Dec 2025 | |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. |
13F
|
Company |
0.69%
|
370,875
|
$86,962,769 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.67%
|
360,550
|
$84,541,763 | — | 31 Dec 2025 | |
| FIL Ltd |
13F
|
Company |
0.66%
|
352,690
|
$82,698,751 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.63%
|
339,351
|
$79,571,022 | — | 31 Dec 2025 | |
| M.D. Sass, LLC |
13F
|
Company |
0.62%
|
334,198
|
$78,362,747 | — | 31 Dec 2025 | |
| Quantinno Capital Management LP |
13F
|
Company |
0.62%
|
330,243
|
$77,435,475 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.6%
|
321,500
|
$75,385,320 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.49%
|
264,242
|
$61,960,282 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.48%
|
259,459
|
$60,837,946 | — | 31 Dec 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
0.47%
|
250,061
|
$58,634,595 | — | 31 Dec 2025 | |
| WESTFIELD CAPITAL MANAGEMENT CO LP |
13F
|
Company |
0.46%
|
245,594
|
$57,586,881 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.45%
|
238,709
|
$55,972,486 | — | 31 Dec 2025 | |
| 12th Street Asset Management Company, LLC |
13F
|
Company |
0.39%
|
210,239
|
$49,296,835 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.37%
|
199,490
|
$46,776,638 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
0.35%
|
187,401
|
$43,941,786 | — | 31 Dec 2025 | |
| Neuberger Berman Group LLC |
13F
|
Company |
0.33%
|
174,416
|
$40,922,133 | — | 31 Dec 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.31%
|
164,803
|
$38,643,007 | — | 31 Dec 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.3%
|
162,657
|
$38,139,734 | — | 31 Dec 2025 | |
| Deutsche Girozentrale DekaBank |
13F
|
Individual |
0.34%
|
180,000
|
$38,095,000 | — | 31 Dec 2025 | |
| Vontobel Holding Ltd. |
13F
|
Company |
0.3%
|
161,239
|
$37,807,321 | — | 31 Dec 2025 | |
| Swedbank AB |
13F
|
Company |
0.28%
|
150,000
|
$35,172,000 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for CLEAN HARBORS INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Eric W. Gerstenberg | CLH | Common Stock | Sale | -2.51% | $293,000 | $293.00 | -1,000 | 38,877 | 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 |
| 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 | ||
| Eric W. Gerstenberg | CLH | Common Stock | Disposed to Issuer | -5.15% | -2,166 | 39,877 | 13 Mar 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Tax liability | -2.27% | -977 | 42,043 | 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 | ||
| Eric J. Dugas | CLH | Common Stock | Disposed to Issuer | -8.65% | -1,324 | 13,979 | 13 Mar 2026 | Direct | ||
| Eric J. Dugas | CLH | Common Stock | Tax liability | -3.95% | -630 | 15,303 | 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 | -5.49% | $699,650 | $279.86 | -2,500 | 43,020 | 23 Feb 2026 | Direct |
| Sharon M. Gabriel | CLH | Common Stock | Sale | -13.2% | $998,528 | $282.07 | -3,540 | 23,193 | 20 Feb 2026 | Direct |
| Eric J. Dugas | CLH | Common Stock | Sale | -14.9% | $784,292 | $281.31 | -2,788 | 15,933 | 20 Feb 2026 | Direct |
| Alan S. Mckim | CLH | Common Stock | Gift | -0.44% | -10,000 | 2,265,368 | 19 Feb 2026 | McKim 2007 Trust | ||
| Alan S. Mckim | CLH | Common Stock | Sale | -4.21% | $28,114,000 | $281.14 | -100,000 | 2,275,368 | 19 Feb 2026 | McKim 2007 Trust |
| John R. Welch | CLH | Common Stock | Sale | -6.83% | $204,802 | $273.07 | -750 | 10,237 | 19 Feb 2026 | Direct |
| Charles H. Geer II | CLH | Common Stock | Tax liability | -2.24% | -197 | 8,617 | 02 Feb 2026 | Direct | ||
| Jeroen Diderich | CLH | Common Stock | Tax liability | -0.76% | -105 | 13,667 | 02 Feb 2026 | Direct | ||
| Rebecca Underwood | CLH | Common Stock | Tax liability | -2.46% | -425 | 16,859 | 02 Feb 2026 | Direct | ||
| Robert W. Harrison | CLH | Common Stock | Tax liability | -3.18% | -184 | 5,601 | 02 Feb 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Tax liability | -1.86% | -508 | 26,733 | 02 Feb 2026 | Direct | ||
| Eric J. Dugas | CLH | Common Stock | Tax liability | -2.94% | -567 | 18,721 | 02 Feb 2026 | Direct | ||
| Michael Louis Battles | CLH | Common Stock | Tax liability | -6.28% | -5,205 | 77,706 | 02 Feb 2026 | Direct | ||
| Brian P. Weber | CLH | Common Stock | Tax liability | -2.61% | -1,394 | 52,018 | 02 Feb 2026 | Direct | ||
| George L. Curtis | CLH | Common Stock | Tax liability | -0.52% | -249 | 47,415 | 02 Feb 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Tax liability | -9.78% | -4,934 | 45,520 | 02 Feb 2026 | Direct | ||
| Charles H. Geer II | CLH | Common Stock | Award | 27.2% | 2,346 | 10,963 | 01 Feb 2026 | Direct | ||
| Jeroen Diderich | CLH | Common Stock | Award | 30.6% | 4,188 | 17,855 | 01 Feb 2026 | Direct | ||
| Rebecca Underwood | CLH | Common Stock | Award | 19.9% | 3,351 | 20,210 | 01 Feb 2026 | Direct | ||
| Robert W. Harrison | CLH | Common Stock | Award | 25.6% | 1,433 | 7,034 | 01 Feb 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Award | 9.87% | 2,639 | 29,372 | 01 Feb 2026 | Direct | ||
| Eric J. Dugas | CLH | Common Stock | Award | 21.8% | 4,088 | 22,809 | 01 Feb 2026 | Direct | ||
| Michael Louis Battles | CLH | Common Stock | Award | 27% | 20,980 | 98,686 | 01 Feb 2026 | Direct | ||
| Brian P. Weber | CLH | Common Stock | Award | 8.12% | 4,222 | 56,240 | 01 Feb 2026 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Award | 46.1% | 20,980 | 66,500 | 01 Feb 2026 | Direct | ||
| Sharon M. Gabriel | CLH | Common Stock | Tax liability | -1.89% | -525 | 27,241 | 02 Jan 2026 | Direct | ||
| John R. Welch | CLH | Common Stock | Gift | -3.64% | -415 | 10,987 | 17 Dec 2025 | Direct | ||
| Eric W. Gerstenberg | CLH | Common Stock | Sale | -1.18% | $144,781 | $240.90 | -601 | 50,454 | 16 Dec 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.