NYSE · CLH

Clean Harbors Inc

Last insider buy price $314.83 Paid by Director Karyn Polito on Oct 29 (Form 4). Not today's price.

Smart money pulse

What insiders and funds are doing

Buying Insiders: as of Nov 12 Funds: as of Jun 30, 2026

group
1 insider bought in the last 30 days. $39.4K in open-market buys, Oct 29.
account_balance
276 funds bought, 265 sold in the quarter ended Jun 30, 2026. 102 were new holders.
info
No real insider sales in 12 months. Planned 10b5-1 sales and tax withholding are left out.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

662 funds report owning CLH, up from 626

Holdings as of Jun 30, 2026

New102

Added174

Held187

Trimmed199

Sold out66

Last quarter

Who bought and who sold

BlackRock, Inc.

+6%

Wellington Management Group LLP

−12%

FMR LLC

+43%

Janus Henderson Group PLC

Sold

Lone Pine Capital LLC

Sold

Jupiter Topco LLC

New

State Street Corp

+3%

Pictet Asset Management Holding SA

−51%

Change in shares held, biggest holdings first. Bars stop at ±100%.

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale

Last 6 months. A wider screen shows 12.

Showing 1 real trade. Hidden: 1 tax withholding, 1 gift. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Oct 29 Karyn Polito Director Open-market buy $39.4K 125 sh at $314.83

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Congress · last 12 months

Members of Congress who traded CLH

All Congress trades

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Sale $50,001 – $100,000 Traded Aug 25, 2026 Reported Sep 9, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Partial sale $1,001 – $15,000 Traded Jul 28, 2026 Reported Aug 3, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Partial sale $1,001 – $15,000 Traded Jul 27, 2026 Reported Aug 3, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Partial sale $1,001 – $15,000 Traded Jul 24, 2026 Reported Aug 3, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Partial sale $1,001 – $15,000 Traded May 1, 2026 Reported Jun 5, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Partial sale $1,001 – $15,000 Traded Apr 30, 2026 Reported May 6, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Purchase $15,001 – $50,000 Traded Feb 23, 2026 Reported Mar 10, 2026

CLH Clean Harbors, Inc. Common Stock April McClain Delaney MD-6 · Child Purchase $1,001 – $15,000 Traded Dec 3, 2025 Reported Jan 5, 2026

Amounts are the ranges members report, not exact amounts. Reports can come up to 45 days after the trade. From House STOCK Act reports. This is data, not advice.

Top holders

Biggest funds in CLH

As of Jun 30, 2026

Fund	Value	Change
BlackRock, Inc.	$1.52B	+6%
Wellington Management Group LLP	$943M	−12%
FMR LLC	$897M	+43%
Vanguard Capital Management LLC	$652M	+1%
Vanguard Portfolio Management LLC	$593M	+1%