StockCIK 822818

CLEAN HARBORS INC (CLH): Insider Trades and Fund Holdings

In the past 12 months, CLEAN HARBORS INC insiders reported 0 open-market purchases worth $0 and 4 sales worth $2.58M; 0 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$2.58MSold by insiders, 12 months

1Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Aug 18, 2026.

Recent CLH insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Aug 18	Aug 14	Eric W. GerstenbergCEO	CEO	▼ SELL	2,500	321.34	$803K	−4.2%	Form 4 ↗
Aug 14	Feb 20	Eric J. DugasCFO	CFO	▼ SELL	2,788	281.31	$784K	−12%	Form 4 ↗
Aug 14	Feb 23	Eric W. GerstenbergCEO	CEO	▼ SELL	2,500	279.86	$700K	−3.8%	Form 4 ↗
Aug 14	Mar 18	Eric W. GerstenbergCEO	CEO	▼ SELL	1,000	293.00	$293K	−1.6%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

Insider	Role	Buys	Bought	Sells	Sold	Latest
Eric W. Gerstenberg	CEO	0	$0	3	$1.80M	Aug 18, 2026
Eric J. Dugas	CFO	0	$0	1	$784K	Aug 14, 2026

Tracked funds that report CLH

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	82,202	$24.6M	0.03%	▲ New
Lone Pine Capital	Q2 2026	0	$0	0.00%	▼ Sold out

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →