CLH Insider Trading

Net Selling · 180d
Open-Market Buys (180d)
$136K
1 insiders
Open-Market Sells (180d)
$62.2M
8 insiders
Net Insider Flow
-$62.1M
open market, 180d
Reporting Insiders
9
11 P/S transactions
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Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 17, 2026McKim Alan SEXEC CHAIR, CTO., DirectorTax withholding(F)1K$310.58$393K
Jul 1, 2026Gerstenberg Eric WCO-CEOTax withholding(F)564$290.74$164K
Jul 1, 2026Geer Charles H. IIEVP, Industrial ServicesTax withholding(F)40$290.74$12K
Jul 1, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERTax withholding(F)447$290.74$130K
Jul 1, 2026Gabriel Sharon M.EVP/CIO (CHESI)Tax withholding(F)359$290.74$104K
Jul 1, 2026Weber Brian PEVP (CHESI)Tax withholding(F)814$290.74$237K
Jul 1, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESTax withholding(F)311$290.74$90K
Jul 1, 2026McKim Alan SEXEC CHAIR, CTO., DirectorTax withholding(F)1K$290.74$390K
Jun 1, 2026Diderich JeroenEVP&President of Sales&ServiceTax withholding(F)2K$281.00$482K
May 26, 2026States LaurenDirectorSell(S)789$286.19$226K
May 20, 2026Galante Edward GDirectorGrant(A)652$0
May 20, 2026Robertson AndreaDirectorGrant(A)652$0
May 20, 2026Willett RobertDirectorGrant(A)652$0
May 20, 2026Stewart Shelley JRDirectorGrant(A)652$0
May 20, 2026Quirk Alison A.DirectorGrant(A)652$0
May 20, 2026Preston John TDirectorGrant(A)652$0
May 20, 2026States LaurenDirectorGrant(A)652$0
May 20, 2026Reed Marcy L.DirectorGrant(A)652$0
May 20, 2026Polito KarynDirectorGrant(A)652$0
May 20, 2026Welch John R.DirectorGrant(A)652$0
May 11, 2026Robertson AndreaDirectorGift(G)342$0
May 11, 2026Polito KarynDirectorBuy(P)460$295.13$136K
Mar 18, 2026Gerstenberg Eric WCO-CEOSell(S)1K$293.00$293K
Mar 18, 2026Reed Marcy L.DirectorSell(S)836$287.94$241K
Mar 17, 2026Weber Brian PEVP (CHESI)Sell(S)5K$293.39$1.4M
Mar 13, 2026McKim Alan SEXEC CHAIR, CTO., DirectorTax withholding(F)1K$288.93$365K
Mar 13, 2026Gerstenberg Eric WCO-CEOTax withholding(F)977$288.93$282K
Mar 13, 2026Gerstenberg Eric WCO-CEODisposed to issuer(D)2K$0
Mar 13, 2026Curtis George LEXEC. VICE PRESIDENT (CHESI)Tax withholding(F)350$288.93$101K
Mar 13, 2026Curtis George LEXEC. VICE PRESIDENT (CHESI)Disposed to issuer(D)1K$0
Mar 13, 2026Weber Brian PEVP (CHESI)Tax withholding(F)960$288.93$277K
Mar 13, 2026Weber Brian PEVP (CHESI)Disposed to issuer(D)2K$0
Mar 13, 2026Battles Michael LouisCO-CEO, DirectorDisposed to issuer(D)2K$0
Mar 13, 2026Battles Michael LouisCO-CEO, DirectorTax withholding(F)1K$288.93$332K
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERDisposed to issuer(D)1K$0
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERTax withholding(F)630$288.93$182K
Mar 13, 2026Gabriel Sharon M.EVP/CIO (CHESI)Disposed to issuer(D)1K$0
Mar 13, 2026Gabriel Sharon M.EVP/CIO (CHESI)Tax withholding(F)727$288.93$210K
Mar 13, 2026Harrison Robert W.EVP, EHSDisposed to issuer(D)368$0
Mar 13, 2026Harrison Robert W.EVP, EHSTax withholding(F)18$288.93$5K
Mar 13, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESTax withholding(F)125$288.93$36K
Mar 13, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESDisposed to issuer(D)1K$0
Mar 13, 2026Geer Charles H. IIEVP, Industrial ServicesDisposed to issuer(D)139$0
Mar 4, 2026McKim Alan SEXEC CHAIR, CTO., DirectorSell(S)100K$292.65$29.3M
Feb 23, 2026Gerstenberg Eric WCO-CEOSell(S)3K$279.86$700K
Feb 20, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERSell(S)3K$281.31$784K
Feb 20, 2026Gabriel Sharon M.EVP/CIO (CHESI)Sell(S)4K$282.07$999K
Feb 19, 2026McKim Alan SEXEC CHAIR, CTO., DirectorGift(G)10K$0
Feb 19, 2026McKim Alan SEXEC CHAIR, CTO., DirectorSell(S)100K$281.14$28.1M
Feb 19, 2026Welch John R.DirectorSell(S)750$273.07$205K
Feb 2, 2026Gerstenberg Eric WCO-CEOTax withholding(F)5K$259.91$1.3M
Feb 2, 2026Curtis George LEXEC. VICE PRESIDENT (CHESI)Tax withholding(F)249$259.91$65K
Feb 2, 2026Weber Brian PEVP (CHESI)Tax withholding(F)1K$259.91$362K
Feb 2, 2026Battles Michael LouisCO-CEO, DirectorTax withholding(F)5K$259.91$1.4M
Feb 2, 2026Diderich JeroenEVP&President of Sales&ServiceTax withholding(F)105$259.91$27K
Feb 2, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERTax withholding(F)567$259.91$147K
Feb 2, 2026Gabriel Sharon M.EVP/CIO (CHESI)Tax withholding(F)508$259.91$132K
Feb 2, 2026Harrison Robert W.EVP, EHSTax withholding(F)184$259.91$48K
Feb 2, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESTax withholding(F)425$259.91$110K
Feb 2, 2026Geer Charles H. IIEVP, Industrial ServicesTax withholding(F)197$259.91$51K
Feb 1, 2026Gerstenberg Eric WCO-CEOGrant(A)11K$0
Feb 1, 2026Gerstenberg Eric WCO-CEOGrant(A)10K$0
Feb 1, 2026Weber Brian PEVP (CHESI)Grant(A)3K$0
Feb 1, 2026Weber Brian PEVP (CHESI)Grant(A)1K$0
Feb 1, 2026Battles Michael LouisCO-CEO, DirectorGrant(A)10K$0
Feb 1, 2026Battles Michael LouisCO-CEO, DirectorGrant(A)11K$0
Feb 1, 2026Diderich JeroenEVP&President of Sales&ServiceGrant(A)3K$0
Feb 1, 2026Diderich JeroenEVP&President of Sales&ServiceGrant(A)1K$0
Feb 1, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERGrant(A)1K$0
Feb 1, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERGrant(A)3K$0
Feb 1, 2026Gabriel Sharon M.EVP/CIO (CHESI)Grant(A)566$0
Feb 1, 2026Gabriel Sharon M.EVP/CIO (CHESI)Grant(A)2K$0
Feb 1, 2026Harrison Robert W.EVP, EHSGrant(A)1K$0
Feb 1, 2026Harrison Robert W.EVP, EHSGrant(A)430$0
Feb 1, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESGrant(A)838$0
Feb 1, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESGrant(A)3K$0
Feb 1, 2026Geer Charles H. IIEVP, Industrial ServicesGrant(A)503$0
Feb 1, 2026Geer Charles H. IIEVP, Industrial ServicesGrant(A)2K$0
Jan 2, 2026Gabriel Sharon M.EVP/CIO (CHESI)Tax withholding(F)525$234.48$123K
Dec 17, 2025Welch John R.DirectorGift(G)415$0
Dec 16, 2025Gerstenberg Eric WCO-CEOSell(S)601$240.90$145K
Dec 15, 2025Harrison Robert W.EVP, EHSTax withholding(F)16$240.71$4K
Dec 15, 2025Underwood RebeccaPRESIDENT & EVP FACILITIESTax withholding(F)51$240.71$12K
Dec 15, 2025Geer Charles H. IIEVP, Industrial ServicesTax withholding(F)28$240.71$7K
Dec 9, 2025Curtis George LEXEC. VICE PRESIDENT (CHESI)Gift(G)1K$0
Dec 1, 2025Harrison Robert W.EVP, EHSTax withholding(F)122$228.54$28K
Nov 13, 2025States LaurenDirectorGift(G)245$0
Nov 1, 2025Geer Charles H. IIEVP, Industrial ServicesTax withholding(F)294$210.51$62K
Sep 16, 2025McKim Alan SEXEC CHAIR, CTO., DirectorGift(G)4K$0
Sep 16, 2025McKim Alan SEXEC CHAIR, CTO., DirectorGift(G)9K$0
Aug 5, 2025Robertson AndreaDirectorGift(G)430$0
Aug 1, 2025Battles Michael LouisCO-CEO, DirectorBuy(P)2K$233.50$467K
Jul 31, 2025Robertson AndreaDirectorSell(S)836$233.64$195K
Jul 1, 2025McKim Alan SEXEC CHAIR, CTO., DirectorTax withholding(F)1K$229.55$308K
Jul 1, 2025Dugas Eric J.EVP CHIEF FINANCIAL OFFICERTax withholding(F)613$229.55$141K
Jul 1, 2025Weber Brian PEVP (CHESI)Tax withholding(F)1K$229.55$261K
Jul 1, 2025Gabriel Sharon M.EVP/CIO (CHESI)Tax withholding(F)525$229.55$121K
Jul 1, 2025Curtis George LEXEC. VICE PRESIDENT (CHESI)Tax withholding(F)399$229.55$92K
Jul 1, 2025Gerstenberg Eric WCO-CEOTax withholding(F)564$229.55$129K
Jul 1, 2025Battles Michael LouisCO-CEO, DirectorTax withholding(F)2K$229.55$352K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-01-042026-07-20. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).