CLHNYSE · Hazardous Waste Management

CLEAN HARBORS INC

Alert me on CLH

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Sep 9 Sale Rep. April McClain Delaney House

1 week

−1.7%S&P +0.6%

1 month

−1.2%S&P +3.0%

3 months

Result in32 trading days

6 months

Result in95 trading days

Aug 18 Sale GERSTENBERG ERIC W Insider

1 week

−3.4%S&P −0.2%

1 month

−1.2%S&P −0.6%

3 months

Result in16 trading days

6 months

Result in79 trading days

Aug 3 Sale Rep. April McClain Delaney House

1 week

+0.3%S&P −0.1%

1 month

+1.5%S&P −0.8%

3 months

Result in6 trading days

6 months

Result in69 trading days

Aug 3 Sale Robertson Andrea Insider

1 week

−0.3%S&P +2.0%

1 month

+1.4%S&P +0.5%

3 months

Result in5 trading days

6 months

Result in68 trading days

Jun 5 Sale Rep. April McClain Delaney House

1 week

+2.0%S&P +2.1%

1 month

+8.5%S&P +1.9%

3 months

+13.9%S&P +3.9%

6 months

Result in30 trading days

Show all 24

May 27 Sale States Lauren Insider

1 week

+1.4%S&P +0.5%

1 month

+6.7%S&P −2.6%

3 months

+10.9%S&P +2.3%

6 months

Result in22 trading days

May 14 Buy Polito Karyn Insider

1 week

−8.4%S&P −0.7%

1 month

−7.9%S&P +0.9%

3 months

+4.4%S&P +4.0%

6 months

Result in14 trading days

May 6 Sale Rep. April McClain Delaney House

1 week

+9.2%S&P +2.3%

1 month

−1.4%S&P +1.0%

3 months

+9.1%S&P +6.0%

6 months

Result in9 trading days

Mar 19 Sale Reed Marcy L. Insider

1 week

−2.3%S&P −2.0%

1 month

+4.9%S&P +7.7%

3 months

−0.3%S&P +13.8%

6 months

+9.1%S&P +16.3%

Mar 19 Sale GERSTENBERG ERIC W Insider

1 week

−2.3%S&P −2.0%

1 month

+4.9%S&P +7.7%

3 months

−0.3%S&P +13.8%

6 months

+9.1%S&P +16.3%

Mar 17 Sale Weber Brian P Insider

1 week

−1.8%S&P −2.4%

1 month

+2.1%S&P +4.9%

3 months

0.0%S&P +12.2%

6 months

+9.8%S&P +13.0%

Mar 10 Buy Rep. April McClain Delaney House

1 week

+0.5%S&P −2.2%

1 month

+4.4%S&P +0.7%

3 months

−0.3%S&P +7.6%

6 months

+10.8%S&P +12.6%

Mar 5 Sale MCKIM ALAN S Insider

1 week

−0.1%S&P −2.2%

1 month

+3.4%S&P −3.0%

3 months

−1.0%S&P +11.4%

6 months

+10.0%S&P +14.1%

Feb 25 Sale GERSTENBERG ERIC W Insider

1 week

+2.4%S&P −1.2%

1 month

−1.1%S&P −6.7%

3 months

−1.1%S&P +8.6%

6 months

+9.7%S&P +11.1%

Feb 23 Sale MCKIM ALAN S Insider

1 week

+5.8%S&P +0.6%

1 month

+1.6%S&P −4.0%

3 months

+2.2%S&P +9.6%

6 months

+11.7%S&P +12.5%

Feb 20 Sale Gabriel Sharon M. Insider

1 week

+3.0%S&P −0.5%

1 month

+0.5%S&P −4.7%

3 months

−0.7%S&P +8.0%

6 months

+11.0%S&P +11.7%

Feb 20 Sale Dugas Eric J. Insider

1 week

+3.0%S&P −0.5%

1 month

+0.5%S&P −4.7%

3 months

−0.7%S&P +8.0%

6 months

+11.0%S&P +11.7%

Feb 20 Sale Welch John R. Insider

1 week

+3.0%S&P −0.5%

1 month

+0.5%S&P −4.7%

3 months

−0.7%S&P +8.0%

6 months

+11.0%S&P +11.7%

Jan 5 Buy Rep. April McClain Delaney House

1 week

+3.7%S&P +0.3%

1 month

+7.1%S&P −2.1%

3 months

+23.5%S&P −2.0%

6 months

+23.3%S&P +9.2%

Dec 17, 2025 Sale GERSTENBERG ERIC W Insider

1 week

+1.0%S&P +3.1%

1 month

+7.8%S&P +1.2%

3 months

+16.0%S&P −2.8%

6 months

+21.7%S&P +11.8%

Sep 2, 2025 Sale Rep. April McClain Delaney House

1 week

−2.7%S&P +1.3%

1 month

−5.6%S&P +4.2%

3 months

−0.6%S&P +6.2%

6 months

+20.3%S&P +6.4%

Jul 2, 2025 Sale Rep. April McClain Delaney House

1 week

−0.5%S&P −0.3%

1 month

+1.0%S&P +0.9%

3 months

−2.9%S&P +7.3%

6 months

+4.0%S&P +9.9%

Mar 20, 2025 Sale Rep. April McClain Delaney House

1 week

+0.4%S&P −1.5%

1 month

+6.1%S&P −6.5%

3 months

+17.1%S&P +6.7%

6 months

+20.6%S&P +18.9%

Feb 13, 2025 Sale Rep. Rob Bresnahan House

1 week

−7.9%S&P −2.0%

1 month

−15.2%S&P −8.0%

3 months

+1.4%S&P −2.2%

6 months

+5.5%S&P +6.1%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for CLH

102 held · newest 5102 held · newest 2

Loading the filings.

See all 102 filings for CLH

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Jun 30, 2026 Schedule 13G

FMR LLC: 5.7%, 3,002,654 shares

Mar 31, 2026 Schedule 13G, amended

D1 Capital Partners L.P.: 2.5%, 1,338,281 shares

Mar 31, 2026 Schedule 13G, amended

Wellington Management Group LLP: 6.8%, 3,576,062 shares

Mar 13, 2026 Schedule 13G, amended

The Vanguard Group: 0%, 0 shares

Dec 31, 2025 Schedule 13G

D1 Capital Partners L.P.: 5.2%, 2,781,882 shares

Dec 31, 2025 Schedule 13G, amended

Wellington Management Group LLP: 9.7%, 5,182,538 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

$90KQ4 2025

$90KQ1 2026

$90KQ2 2026

$90KQ3 2026

Unchanged from Q2 2026. Reported to the Senate each quarter by the firms it hires.Original report ↗

Read from LDA.gov between Sep 23, 2026 and Oct 8, 2026. Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.