The Filings Report

Clean Harbors, Inc insider trading

CLHfinancial statementsForm 4 filings on EDGAR231 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at Clean Harbors, Inc bought $0 of stock in the open market, and 1 sold $803K. Officers and directors accounted for $0 of purchases and $803K of sales. The last reported transaction was an open-market sale by Gerstenberg Eric W on August 14, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through August 18, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

CLH daily priceSplit-adjusted prices in US dollars

Bought $0Sold $803KAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $310.95 · H $312.07 · L $300.84 · C $302.12Bought $0 (0)Sold $0 (0)
$299$307$315$323$3302026-08-04: open $309.74, high $311.85, low $303.46, close $310.612026-08-05: open $312.63, high $315.26, low $306.13, close $309.242026-08-06: open $311.93, high $315.51, low $307.47, close $307.642026-08-07: open $307.50, high $310.21, low $306.53, close $308.172026-08-10: open $309.07, high $314.40, low $307.22, close $310.002026-08-11: open $310.15, high $314.04, low $309.98, close $311.552026-08-12: open $311.19, high $318.87, low $310.54, close $316.652026-08-13: open $317.35, high $320.69, low $316.69, close $320.242026-08-14: open $321.70, high $323.21, low $319.08, close $321.982026-08-17: open $320.32, high $326.46, low $319.23, close $326.052026-08-18: open $326.05, high $326.90, low $318.06, close $319.502026-08-19: open $320.98, high $326.73, low $318.92, close $325.222026-08-20: open $324.07, high $328.68, low $321.79, close $321.952026-08-21: open $323.48, high $323.48, low $314.52, close $315.982026-08-24: open $316.00, high $316.80, low $310.85, close $313.732026-08-25: open $314.36, high $315.31, low $308.34, close $308.482026-08-26: open $308.00, high $314.80, low $308.00, close $313.672026-08-27: open $312.33, high $313.92, low $308.45, close $311.812026-08-28: open $312.47, high $312.51, low $308.58, close $310.712026-08-31: open $310.97, high $315.63, low $310.00, close $315.252026-09-01: open $316.27, high $318.99, low $313.82, close $315.252026-09-02: open $314.53, high $317.90, low $310.51, close $315.222026-09-03: open $317.26, high $320.26, low $314.57, close $318.652026-09-04: open $315.62, high $318.84, low $314.87, close $317.102026-09-08: open $316.69, high $319.21, low $314.29, close $317.132026-09-09: open $318.81, high $321.03, low $314.09, close $315.702026-09-10: open $316.00, high $323.78, low $314.00, close $320.942026-09-11: open $321.23, high $323.19, low $317.64, close $322.822026-09-14: open $324.63, high $325.92, low $319.74, close $322.992026-09-15: open $323.12, high $323.99, low $317.73, close $318.202026-09-16: open $318.50, high $325.47, low $317.17, close $318.962026-09-17: open $320.94, high $322.27, low $315.22, close $315.552026-09-18: open $317.18, high $317.50, low $311.88, close $315.802026-09-21: open $315.35, high $317.65, low $309.81, close $311.432026-09-22: open $312.54, high $314.56, low $310.65, close $312.852026-09-23: open $313.35, high $315.49, low $310.69, close $313.152026-09-24: open $314.22, high $318.78, low $313.65, close $316.072026-09-25: open $315.51, high $316.63, low $311.11, close $313.042026-09-28: open $313.19, high $315.75, low $312.09, close $313.262026-09-29: open $310.04, high $313.39, low $309.68, close $311.682026-09-30: open $312.49, high $313.29, low $308.47, close $310.232026-10-01: open $310.00, high $313.90, low $308.32, close $312.512026-10-02: open $313.59, high $319.80, low $312.71, close $318.512026-10-05: open $318.51, high $327.46, low $316.34, close $322.372026-10-06: open $322.07, high $323.61, low $316.86, close $318.062026-10-07: open $317.30, high $320.34, low $315.06, close $315.542026-10-08: open $316.99, high $319.36, low $315.16, close $317.342026-10-09: open $323.02, high $323.02, low $316.01, close $316.932026-10-12: open $317.33, high $322.25, low $316.21, close $319.022026-10-13: open $319.66, high $320.61, low $315.71, close $317.382026-10-14: open $317.02, high $321.08, low $316.46, close $319.242026-10-15: open $321.29, high $322.26, low $318.70, close $319.782026-10-16: open $321.19, high $323.21, low $314.74, close $320.062026-10-19: open $319.10, high $321.73, low $316.50, close $316.612026-10-20: open $318.08, high $322.51, low $313.01, close $316.282026-10-21: open $319.12, high $323.96, low $316.69, close $319.262026-10-22: open $320.50, high $322.38, low $315.84, close $320.962026-10-23: open $320.12, high $322.26, low $317.19, close $318.762026-10-26: open $318.76, high $321.42, low $316.36, close $317.092026-10-27: open $315.53, high $316.50, low $310.59, close $312.922026-10-28: open $320.50, high $323.16, low $303.02, close $313.272026-10-29: open $312.84, high $316.29, low $304.23, close $309.332026-10-30: open $310.95, high $312.07, low $300.84, close $302.12Insider purchases / sales · USD$1M$0−$1M2026-08-14: 0 purchases ($0), 1 sales ($803K)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

231 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Aug 14, 2026Gerstenberg Eric WCO-CEOopen-market sale2,500$321.34$803K56,793Aug 18, 2026
Aug 3, 2026Robertson AndreaDirectoropen-market sale789$314.01$248K8,979Aug 3, 2026
Jul 17, 2026Mckim Alan SEXEC CHAIR, CTO., Directortax withholding1,265$310.58$393K30,154Jul 20, 2026
Jul 1, 2026Gerstenberg Eric WCO-CEOtax withholding564$290.74$164K59,293Aug 14, 2026
Jul 1, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERtax withholding447$290.74$130K17,620Aug 14, 2026
Jul 1, 2026Battles Michael LouisCO-CEO, Directortax withholding1,032$290.74$300K94,355Aug 12, 2026
Jul 1, 2026Curtis George LEXEC. VICE PRESIDENT (CHESI)tax withholding1,757$290.74$511K44,291Aug 11, 2026
Jul 1, 2026Gabriel Sharon M.EVP/CIO (CHESI)tax withholding359$290.74$104K20,706Jul 6, 2026
Jul 1, 2026Weber Brian PEVP (CHESI)tax withholding814$290.74$237K47,914Jul 6, 2026
Jul 1, 2026Underwood RebeccaPRESIDENT & EVP FACILITIEStax withholding311$290.74$90K18,373Jul 6, 2026
Jul 1, 2026Mckim Alan SEXEC CHAIR, CTO., Directortax withholding1,343$290.74$390K31,419Jul 6, 2026
Jul 1, 2026Gerstenberg Eric WCO-CEOtax withholding564$290.74$164K38,313Jul 6, 2026
Jul 1, 2026Geer Charles H. IIEVP, Industrial Servicestax withholding40$290.74$12K10,799Jul 6, 2026
Jul 1, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERtax withholding447$290.74$130K13,532Jul 6, 2026
Jun 1, 2026Diderich JeroenEVP&President of Sales&Servicetax withholding1,717$281.00$482K16,152Jun 3, 2026
May 26, 2026States LaurenDirectoropen-market sale789$286.19$226K11,359May 27, 2026
May 20, 2026Willett RobertDirectoraward652$0.00—10,028May 22, 2026
May 20, 2026Welch John R.Directoraward652$0.00—10,889May 22, 2026
May 20, 2026Stewart Shelley JRDirectoraward652$0.00—4,523May 22, 2026
May 20, 2026States LaurenDirectoraward652$0.00—12,148May 22, 2026
May 20, 2026Robertson AndreaDirectoraward652$0.00—9,768May 22, 2026
May 20, 2026Reed Marcy L.Directoraward652$0.00—5,733May 22, 2026
May 20, 2026Quirk Alison A.Directoraward652$0.00—3,630May 22, 2026
May 20, 2026Preston John TDirectoraward652$0.00—7,044May 22, 2026
May 20, 2026Galante Edward GDirectoraward652$0.00—25,461May 22, 2026
May 20, 2026Polito KarynDirectoraward652$0.00—4,127May 22, 2026
May 11, 2026Polito KarynDirectoropen-market buy460$295.13$136K3,475May 14, 2026
May 11, 2026Polito KarynDirectoraward460$295.13$136K3,475May 13, 2026
May 11, 2026Robertson AndreaDirectorgift342$0.00—9,116May 12, 2026
Mar 18, 2026Gerstenberg Eric WCO-CEOopen-market sale1,000$293.00$293K59,857Aug 14, 2026
Mar 18, 2026Gerstenberg Eric WCO-CEOopen-market sale1,000$293.00$293K38,877Mar 19, 2026
Mar 18, 2026Reed Marcy L.Directoropen-market sale836$287.94$241K5,081Mar 19, 2026
Mar 17, 2026Weber Brian PEVP (CHESI)open-market sale4,683$293.39$1M48,728Mar 17, 2026
Mar 13, 2026Gerstenberg Eric WCO-CEOtax withholding977$288.93$282K63,023Aug 14, 2026
Mar 13, 2026Gerstenberg Eric WCO-CEOdisposition to issuer2,166$0.00—60,857Aug 14, 2026
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERtax withholding630$288.93$182K19,391Aug 14, 2026
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERdisposition to issuer1,324$0.00—18,067Aug 14, 2026
Mar 13, 2026Weber Brian PEVP (CHESI)tax withholding960$288.93$277K55,280Mar 17, 2026
Mar 13, 2026Weber Brian PEVP (CHESI)disposition to issuer1,869$0.00—53,411Mar 17, 2026
Mar 13, 2026Underwood RebeccaPRESIDENT & EVP FACILITIEStax withholding125$288.93$36K20,085Mar 17, 2026
Mar 13, 2026Underwood RebeccaPRESIDENT & EVP FACILITIESdisposition to issuer1,401$0.00—18,684Mar 17, 2026
Mar 13, 2026Gabriel Sharon M.EVP/CIO (CHESI)disposition to issuer1,401$0.00—21,065Mar 17, 2026
Mar 13, 2026Gabriel Sharon M.EVP/CIO (CHESI)tax withholding727$288.93$210K22,466Mar 17, 2026
Mar 13, 2026Gerstenberg Eric WCO-CEOtax withholding977$288.93$282K42,043Mar 17, 2026
Mar 13, 2026Gerstenberg Eric WCO-CEOdisposition to issuer2,166$0.00—39,877Mar 17, 2026
Mar 13, 2026Harrison Robert W.EVP, EHSdisposition to issuer368$0.00—6,648Mar 17, 2026
Mar 13, 2026Harrison Robert W.EVP, EHStax withholding18$288.93$5K7,016Mar 17, 2026
Mar 13, 2026Geer Charles H. IIEVP, Industrial Servicesdisposition to issuer139$0.00—10,839Mar 17, 2026
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERdisposition to issuer1,324$0.00—13,979Mar 17, 2026
Mar 13, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERtax withholding630$288.93$182K15,303Mar 17, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Mckim Alan SEXEC CHAIR, CTO., DirectorJul 17, 2026tax withholding30,154—$57M (2)0 of 2
Gerstenberg Eric WCO-CEOAug 14, 2026open-market sale56,793—$3M (6)0 of 6
Dugas Eric J.EVP CHIEF FINANCIAL OFFICERJul 1, 2026tax withholding17,620—$2M (2)0 of 2
Weber Brian PEVP (CHESI)Jul 1, 2026tax withholding47,914—$1M (1)0 of 1
Gabriel Sharon M.EVP/CIO (CHESI)Jul 1, 2026tax withholding20,706—$999K (1)0 of 1
Robertson AndreaDirectorAug 3, 2026open-market sale8,979—$248K (1)0 of 1
Reed Marcy L.DirectorMay 20, 2026award5,733—$241K (1)0 of 1
States LaurenDirectorMay 26, 2026open-market sale11,359—$226K (1)0 of 1
Welch John R.DirectorMay 20, 2026award10,889—$205K (1)0 of 1
Polito KarynDirectorMay 20, 2026award4,127$136K (1)——
Battles Michael LouisCO-CEO, DirectorJul 1, 2026tax withholding94,355———
Underwood RebeccaPRESIDENT & EVP FACILITIESJul 1, 2026tax withholding18,373———
Speights RobertPRESIDENT, INDUSTRIAL SERVICESMay 27, 2025open-market sale16,310———
Curtis George LEXEC. VICE PRESIDENT (CHESI)Jul 1, 2026tax withholding44,291———
Harrison Robert W.EVP, EHSMar 13, 2026disposition to issuer6,648———
Geer Charles H. IIEVP, Industrial ServicesJul 1, 2026tax withholding10,799———
Diderich JeroenEVP&President of Sales&ServiceJun 1, 2026tax withholding16,152———
Quirk Alison A.DirectorMay 20, 2026award3,630———
Willett RobertDirectorMay 20, 2026award10,028———
Stewart Shelley JRDirectorMay 20, 2026award4,523———
Preston John TDirectorMay 20, 2026award7,044———
Galante Edward GDirectorMay 20, 2026award25,461———

Questions

Are Clean Harbors, Inc insiders buying or selling?

Over the twelve months to November 1, 2026, 9 insiders at Clean Harbors, Inc sold $65M of stock in the open market, all by officers and directors, and 1 insider bought $136K, all by officers and directors. Net, insiders sold $65M. Only open-market purchases and sales are counted.

Who sold the most Clean Harbors, Inc stock in the last year?

Mckim Alan S (EXEC CHAIR, CTO., Director) sold $57M in 2 open-market sales over the twelve months to November 1, 2026.

Do Clean Harbors, Inc executives sell under 10b5-1 plans?

0 of the 16 open-market sales in the last twelve months (0%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Clean Harbors, Inc

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.