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ClosedPublished 5 Oct 2026

Clean Harbors, Inc. /
EnviroServe Inc.

One Rock exits EnviroServe in $470 million sale to Clean Harbors

Sell side: One Rock Capital Partners
Sell sideOne Rock Capital Partners
One Rock Capital Partners · 5 Oct 2026Source
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Follow Clean Harbors, Inc. Follow EnviroServe Inc.
Sell side: One Rock Capital Partners
Sell sideOne Rock Capital Partners
01 / BuyerClean Harbors, Inc.
02 / SellerOne Rock Capital Partners
03 / TargetEnviroServe Inc.
Source for the buyer, seller and target: One Rock Capital Partners

For the buyer, seller and target.

“One Rock Capital Partners, LLC (together with its affiliates, “One Rock”), a value-oriented, operationally focused private equity firm, today announced that it has completed the previously announced sale of EnviroServe Inc. and its related affiliates (collectively, “EnviroServe” or the “Company”) to Clean Harbors, Inc. (“Clean Harbors”) (NYSE: CLH) for $470 million.”

Published 5 Oct 2026

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01

What happened

Clean Harbors, Inc. now owns EnviroServe Inc. after One Rock Capital Partners closed its sale of the environmental and waste services business for $470 million, One Rock said on October 5, 2026. [01]

One Rock first bought EnviroServe in a carve-out from Savage Companies, then built it out with greenfield locations and add-on acquisitions before handing it to the NYSE-listed buyer. [01]

02

The source

Everything on this page comes from the source below, quoted word for word.

01
Source · One Rock Capital Partners

One Rock exits EnviroServe in $470 million sale to Clean Harbors

This document is the source for the companies, stage, figure and people on this page.

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03

Timeline

Every date the source states, in order, each with the words it comes from. Anything marked ahead is a target the source gives, not something that has happened.

  1. Announced

    “One Rock exits EnviroServe in $470 million sale to Clean Harbors Clean Harbors, Inc. now owns EnviroServe Inc. after One Rock Capital Partners closed its sale of the environmental and waste services business for $470…”

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  2. Published by One Rock Capital Partners

    The source this page is built from.

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Deal Web · 3 firms · 0 peopleHover a name to see how it connects
This dealClean Harbors, Inc. / EnviroServe Inc.Closed · Published 5 Oct 2026
BuyerClean Harbors, Inc.TargetEnviroServe Inc.SellerOne Rock Capital Partners
This dealClean Harbors, Inc. / EnviroServe Inc.

Closed · Clean Harbors, Inc. acquired EnviroServe Inc. from One Rock Capital Partners (Closed, published 5 Oct 2026).

Announced 5 Oct 2026
Timeline
  1. Announced
  2. Published by One Rock Capital Partners
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