Company · Ownership research

CLEAN HARBORS INC CLH

CIK 0000822818

Form 4 transactions dated Nov 1, 2023 to Nov 10, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 60 rows; the complete set is available through the API.

Insider filings on file run through Nov 3, 2026.

Insider purchases & sales

Purchased: $843.06K
Sold: $152.94M

Nov 1, 2023 – Nov 3, 2026
Available records · partial months are marked ·

Insiders in this window

202410 of 17 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 16, 2024	States Lauren Director	Sale	$75.48K 308 shares sold	2.40% sold Direct holding	▾
Nov 27, 2024	Weber Brian P EVP (CHESI)	Sale	$224.99K 861 shares sold	1.43% sold Direct holding	▾
Nov 15, 2024	States Lauren Director	Sale	$76.93K 308 shares sold	2.34% sold Direct holding	▾
Nov 15, 2024	GERSTENBERG ERIC W CO-CEO	Sale	$1.52M 6,051 shares sold	9.81% sold Direct holding	▾
Nov 5, 2024	Speights Robert PRESIDENT, INDUSTRIAL SERVICES	Sale	$146.49K 610 shares sold	1.53% sold Direct holding	▾
Oct 15, 2024	States Lauren Director	Sale	$80.31K 308 shares sold	2.29% sold Direct holding	▾
Sep 16, 2024	States Lauren Director	Sale	$75.42K 309 shares sold	2.24% sold Direct holding	▾
Sep 16, 2024	Battles Michael Louis CO-CEO	Sale	$2.46M 10,000 shares sold	11.48% sold Direct holding	▾
Aug 1, 2024	Robertson Andrea Director	Sale	$274.26K 1,148 shares sold	9.98% sold Direct holding	▾
Jun 11, 2024	MCKIM ALAN S EXEC CHAIR, CTO. · Director	Sale	$10.78M 50,000 shares sold	1.97% sold Trust holding	▾

Showing 17 / 17 record groups in 2024. The complete set is available through the API.

CLEAN HARBORS INC · CLH

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 17 of 17 purchase / sale groups and 30 of 60 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"CLH","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.