GERSTENBERG ERIC W

PrivateCIK: 1211558
Location

KINGSTON, MA

GERSTENBERG ERIC W (Chief Operating Officer(CHESI)) sold 5.5% of their position (2.50K shares) of CLEAN HARBORS INC on the open market

Open‑market sale worth $699.6K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderGERSTENBERG ERIC WCIK 1211558
IssuerCLEAN HARBORS INCCIK 822818
Officer· Chief Operating Officer(CHESI)
Since Jul 2018
-2.50K
Net shares
Net seller
$699.6K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
2.50K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

2.50K

Price / share

$279.86

Trade value

$699.65K

% of position

5.5%
2/23/2026
45.52K43.02K
Total

Net shares

2.50K

Net value

-$699.65K

Derivative Transactions0
No derivative transactions reported
GERSTENBERG ERIC W — Insider Transaction (Form 4) Filed Feb 24, 2026 | Finecho