Clean Harbors Inc.

Last updated September 27, 2026

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Organization details

Legal name: Clean Harbors Inc.
Ownership: Public
Status: Active
Sector (GICS): Industrials
SIC code: 4955 — Hazardous Waste Management
Jurisdiction of incorporation: Massachusetts
Headquarters city: Norwell
Headquarters state / province: Massachusetts
Headquarters country: United States
Fiscal year end: December
Ticker symbol: CLH
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0000822818
EIN: 04-2997780
Wikidata ID: Q5130494

Board of directors

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Alan S. Mckim · Director · EXEC CHAIR, CTO.
Since 2023
Alison A. Quirk · Director
Since 2023
Andrea Robertson · Director
Since 2023
Edward G. Galante · Director
Since 2023
Eugene G. Banucci · Director
Since 2023
John R. Welch · Director
Since 2023
John T. Preston · Director
Since 2023
Karyn Polito · Director
Since 2023
Lauren States · Director
Since 2023
Marcy L. Reed · Director
Since 2023
Michael Louis Battles · Director · CO-CEO
Since 2025
Robert Willett · Director
Since 2023
Shelley Stewart Jr. · Director
Since 2023

Chief executives

Alan S. Mckim · CHRMN.OF BD, PRES. & CEO

Dates unknown

Michael Louis Battles · CO-CEO

Dates unknown

Director election results

Annual meeting of May 20, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

6 of this board's directors also sit on 10 other boards. 2 are in the same sector.

Shared director Other board Same sector

Allegro MicroSystems Inc.
via Robert Willett
Beacon Financial Corporation
via Karyn Polito
Casella Waste Systems Inc. Same sector
via Michael Louis Battles
Celanese Corporation
via Edward G. Galante
Cognex Corporation
via Robert Willett
Edison International
via Marcy L. Reed
Kontoor Brands Inc.
via Shelley Stewart Jr.
Linde plc
via Edward G. Galante
Marathon Petroleum Corporation
via Edward G. Galante
Otis Worldwide Corporation Same sector
via Shelley Stewart Jr.

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $39,354; 1 purchase by 1 insider
Sold, last 12 months: $63,395,624; 13 sales by 9 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 9, 2026	Marcy L. Reed Director	Gift	−350	—	—
Nov 2, 2026	Geer Charles H. II Officer (EVP, Industrial Services)	Shares withheld for tax	−294	$302.12	$88,823
Oct 29, 2026	Karyn Polito Director	Open-market purchase	+125	$314.83	$39,354
Aug 14, 2026	GERSTENBERG ERIC W Officer (CO-CEO)	Open-market sale	−2,500	$321.34	$803,350
Aug 3, 2026	Andrea Robertson Director	Open-market sale	−789	$314.01	$247,754
Jul 17, 2026	Alan S. Mckim Director, Officer (EXEC CHAIR, CTO.)	Shares withheld for tax	−1,265	$310.58	$392,884
Jul 1, 2026	Alan S. Mckim Director, Officer (EXEC CHAIR, CTO.)	Shares withheld for tax	−1,343	$290.74	$390,464
Jul 1, 2026	GERSTENBERG ERIC W Officer (CO-CEO)	Shares withheld for tax	−564	$290.74	$163,977
Jul 1, 2026	Weber Brian P Officer (EVP (CHESI))	Shares withheld for tax	−814	$290.74	$236,662
Jul 1, 2026	Dugas Eric J. Officer (EVP CHIEF FINANCIAL OFFICER)	Shares withheld for tax	−447	$290.74	$129,961
Jul 1, 2026	Gabriel Sharon M. Officer (EVP/CIO (CHESI))	Shares withheld for tax	−359	$290.74	$104,376
Jul 1, 2026	Underwood Rebecca Officer (PRESIDENT & EVP FACILITIES)	Shares withheld for tax	−311	$290.74	$90,420
Jul 1, 2026	Geer Charles H. II Officer (EVP, Industrial Services)	Shares withheld for tax	−40	$290.74	$11,630
Jul 1, 2026	CURTIS GEORGE L Officer (EXEC. VICE PRESIDENT (CHESI))	Shares withheld for tax	−1,757	$290.74	$510,830
Jul 1, 2026	Michael Louis Battles Director, Officer (CO-CEO)	Shares withheld for tax	−1,032	$290.74	$300,044

Peers

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Questions about Clean Harbors Inc.

Who is the CEO of Clean Harbors Inc.?

Alan S. Mckim is Clean Harbors Inc.'s CHRMN.OF BD, PRES. & CEO.

How many directors are on Clean Harbors Inc.'s board?

Clean Harbors Inc.'s board has 13 directors: Alan S. Mckim, Alison A. Quirk, Andrea Robertson, Edward G. Galante, Eugene G. Banucci, John R. Welch, John T. Preston, Karyn Polito, Lauren States, Marcy L. Reed and 3 others.

Are Clean Harbors Inc. insiders buying or selling shares?

Over the last 12 months, Clean Harbors Inc. insiders bought $39,354 of shares in 1 purchase and sold $63.4 million of shares in 13 sales on the open market, as reported to the SEC on Forms 4 and 5.

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