Jeffrey Herbert Knapp

CLH

Jeffrey Herbert Knapp serves as EVP - HR (CHESI) at Clean Harbors, Inc. (CLH). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

1 trades

$18.9K

Net Position

Net Seller

$18.9K

Companies Traded

CLH

Active Period

Nov 2021

1 total trades

Most Recent

Sell CLH

Nov 1, 2021 · $18.9K

Jeffrey Herbert Knapp's Insider Trading at Clean Harbors, Inc. (CLH)

Buys

0 · $0.00

Sells

1 · $18.9K

Total Shares Bought

Total Shares Sold

163

CLH Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Nov 1, 2021	Sell	163	$115.69	$18.9K	0

Related Insiders

Marcy L. Reed

director

CLHSell · Mar 19, 2026

GERSTENBERG ERIC W

officer: CO-CEO

CLHSell · Mar 19, 2026

Brian P Weber

officer: EVP (CHESI)

CLHSell · Mar 17, 2026

Sharon M. Gabriel

EVP/CIO (CHESI)

CLHSell · Feb 20, 2026

Eric J. Dugas

EVP CHIEF FINANCIAL OFFICER

CLHSell · Feb 20, 2026

MCKIM ALAN S

EXEC CHAIR, CTO.

CLHSell · Feb 19, 2026

John R. Welch

Director

CLHSell · Feb 19, 2026

CURTIS GEORGE L

EXEC. VICE PRESIDENT (CHESI)

CLHSell · Feb 2, 2026

Explore More Insider Trading Data

CLH Insider Trading Activity

View all insider trades at Clean Harbors, Inc.

Industrials Sector Insider Trades

See insider activity across industrials stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity