Insider txns (12m)
92
Stock / equity
CLH CLEAN HARBORS INC
- Company
- CLEAN HARBORS INC
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 21
- Members of Congress
- 1
- Latest trade on record
- August 25, 2026
CLH (CLEAN HARBORS INC) has 92 disclosed insider transactions from 21 insiders in the last 12 months (0 open-market buys, 58 sales, about $72.0M at reported prices) and 8 congressional trades from 1 member of Congress. The most recent disclosure was filed September 9, 2026.
Open-market buys / sales
0 / 58
Congress trades (12m)
8
Distinct filers (12m)
22
Share price
Price and chart by TradingView for CLEAN HARBORS INC. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
CLH in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
8 people account for the disclosed buying and selling in CLH over the last 12 months; the most active is MCKIM ALAN S with $59M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 13 open-market trades in CLH since Dec 16, 2025, at prices from $241 to $321; the most recent was a sale at $321 on Aug 14, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
GERSTENBERG ERIC WMCKIM ALAN S
GERSTENBERG ERIC W reported 56,793 shares held after the latest filing, against 50,454 at the first on record.
Lobbying spend by quarter
How much has CLEAN HARBORS INC reported spending on federal lobbying?
CLEAN HARBORS INC reported $450K in lobbying over the last eight quarters, from filings matched by exact company name.
Insiders trading CLH
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns. Showing 15 of 21.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| GERSTENBERG ERIC W | CO-CEO | 10 | 0 | 8 | — | $3.7M | August 14, 2026 |
| Gabriel Sharon M. | EVP/CIO (CHESI) | 8 | 0 | 6 | — | $1.6M | July 1, 2026 |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | 7 | 0 | 5 | — | $1.2M | July 1, 2026 |
| Geer Charles H. II | EVP, Industrial Services | 7 | 0 | 5 | — | $131K | July 1, 2026 |
| Underwood Rebecca | PRESIDENT & EVP FACILITIES | 7 | 0 | 5 | — | $249K | July 1, 2026 |
| Weber Brian P | EVP (CHESI) | 7 | 0 | 5 | — | $2.3M | July 1, 2026 |
| Harrison Robert W. | EVP, EHS | 7 | 0 | 5 | — | $85K | March 13, 2026 |
| MCKIM ALAN S | EXEC CHAIR, CTO. | 6 | 0 | 5 | — | $58.5M | July 17, 2026 |
| Battles Michael Louis | CO-CEO | 6 | 0 | 4 | — | $2.0M | July 1, 2026 |
| CURTIS GEORGE L | EXEC. VICE PRESIDENT (CHESI) | 5 | 0 | 4 | — | $677K | July 1, 2026 |
| Diderich Jeroen | EVP&President of Sales&Service | 4 | 0 | 2 | — | $510K | June 1, 2026 |
| Robertson Andrea | Director | 3 | 0 | 1 | — | $248K | August 3, 2026 |
| States Lauren | Director | 3 | 0 | 1 | — | $226K | May 26, 2026 |
| Welch John R. | Director | 3 | 0 | 1 | — | $205K | May 20, 2026 |
| Polito Karyn | Director | 2 | 0 | 0 | — | — | May 20, 2026 |
What kind of transactions these are 5 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| F | Shares withheld for tax | 36 | 30,653 | $8.4M |
| A | Grant or award | 29 | 71,207 | $136K |
| S | Open-market sale | 13 | 220,776 | $63.4M |
| D | Sale back to the company | 9 | 11,862 | — |
| G | Gift | 5 | 12,002 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading CLH
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| April McClain Delaney | Representative (MD, District 6), Democrat | 8 | 2 | 6 | $71K–$240K | August 25, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| GERSTENBERG ERIC W | Sell S | August 14, 2026 | August 18, 2026 | 4d | 2,500 | $321 | $803K | Form 4 ↗ | ||
| Battles Michael Louis | Sell F | July 1, 2026 | August 12, 2026 | 42d | 1,032 | $291 | $300K | late | Form 4 ↗ | |
| CURTIS GEORGE L | Sell F | July 1, 2026 | August 11, 2026 | 41d | 1,757 | $291 | $511K | late | Form 4 ↗ | |
| Robertson Andrea | Sell S | August 3, 2026 | August 3, 2026 | 0d | 789 | $314 | $248K | Form 4 ↗ | ||
| MCKIM ALAN S | Sell F | July 17, 2026 | July 20, 2026 | 3d | 1,265 | $311 | $393K | Form 4 ↗ | ||
| Gabriel Sharon M. | Sell F | July 1, 2026 | July 6, 2026 | 5d | 359 | $291 | $104K | late | Form 4 ↗ | |
| Weber Brian P | Sell F | July 1, 2026 | July 6, 2026 | 5d | 814 | $291 | $237K | late | Form 4 ↗ | |
| Underwood Rebecca | Sell F | July 1, 2026 | July 6, 2026 | 5d | 311 | $291 | $90K | late | Form 4 ↗ | |
| MCKIM ALAN S | Sell F | July 1, 2026 | July 6, 2026 | 5d | 1,343 | $291 | $390K | late | Form 4 ↗ | |
| GERSTENBERG ERIC W | Sell F | July 1, 2026 | July 6, 2026 | 5d | 564 | $291 | $164K | late | Form 4 ↗ | |
| Geer Charles H. II | Sell F | July 1, 2026 | July 6, 2026 | 5d | 40 | $291 | $12K | late | Form 4 ↗ | |
| Dugas Eric J. | Sell F | July 1, 2026 | July 6, 2026 | 5d | 447 | $291 | $130K | late | Form 4 ↗ | |
| Diderich Jeroen | Sell F | June 1, 2026 | June 3, 2026 | 2d | 1,717 | $281 | $482K | Form 4 ↗ | ||
| States Lauren | Sell S | May 26, 2026 | May 27, 2026 | 1d | 789 | $286 | $226K | Form 4 ↗ | ||
| Willett Robert | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Welch John R. | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Stewart Shelley JR | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| States Lauren | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Robertson Andrea | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Reed Marcy L. | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Quirk Alison A. | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| PRESTON JOHN T | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| GALANTE EDWARD G | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Polito Karyn | Other A | May 20, 2026 | May 22, 2026 | 2d | 652 | — | — | Form 4 ↗ | ||
| Polito Karyn | Other A | May 11, 2026 | May 13, 2026 | 2d | 460 | $295 | $136K | Form 4 ↗ | ||
| Robertson Andrea | Other G | May 11, 2026 | May 12, 2026 | 1d | 342 | — | — | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Sell S | March 18, 2026 | March 19, 2026 | 1d | 1,000 | $293 | $293K | Form 4 ↗ | ||
| Reed Marcy L. | Sell S | March 18, 2026 | March 19, 2026 | 1d | 836 | $288 | $241K | Form 4 ↗ | ||
| Weber Brian P | Sell S | March 17, 2026 | March 17, 2026 | 0d | 4,683 | $293 | $1.4M | Form 4 ↗ | ||
| Weber Brian P | Sell D | March 13, 2026 | March 17, 2026 | 4d | 1,869 | — | — | Form 4 ↗ | ||
| Weber Brian P | Sell F | March 13, 2026 | March 17, 2026 | 4d | 960 | $289 | $277K | Form 4 ↗ | ||
| Underwood Rebecca | Sell D | March 13, 2026 | March 17, 2026 | 4d | 1,401 | — | — | Form 4 ↗ | ||
| Underwood Rebecca | Sell F | March 13, 2026 | March 17, 2026 | 4d | 125 | $289 | $36K | Form 4 ↗ | ||
| Gabriel Sharon M. | Sell D | March 13, 2026 | March 17, 2026 | 4d | 1,401 | — | — | Form 4 ↗ | ||
| Gabriel Sharon M. | Sell F | March 13, 2026 | March 17, 2026 | 4d | 727 | $289 | $210K | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Sell D | March 13, 2026 | March 17, 2026 | 4d | 2,166 | — | — | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Sell F | March 13, 2026 | March 17, 2026 | 4d | 977 | $289 | $282K | Form 4 ↗ | ||
| Harrison Robert W. | Sell D | March 13, 2026 | March 17, 2026 | 4d | 368 | — | — | Form 4 ↗ | ||
| Harrison Robert W. | Sell F | March 13, 2026 | March 17, 2026 | 4d | 18 | $289 | $5,201 | Form 4 ↗ | ||
| Geer Charles H. II | Sell D | March 13, 2026 | March 17, 2026 | 4d | 139 | — | — | Form 4 ↗ | ||
| Dugas Eric J. | Sell D | March 13, 2026 | March 17, 2026 | 4d | 1,324 | — | — | Form 4 ↗ | ||
| Dugas Eric J. | Sell F | March 13, 2026 | March 17, 2026 | 4d | 630 | $289 | $182K | Form 4 ↗ | ||
| CURTIS GEORGE L | Sell D | March 13, 2026 | March 17, 2026 | 4d | 1,028 | — | — | Form 4 ↗ | ||
| CURTIS GEORGE L | Sell F | March 13, 2026 | March 17, 2026 | 4d | 350 | $289 | $101K | Form 4 ↗ | ||
| MCKIM ALAN S | Sell F | March 13, 2026 | March 17, 2026 | 4d | 1,265 | $289 | $365K | Form 4 ↗ | ||
| Battles Michael Louis | Sell D | March 13, 2026 | March 17, 2026 | 4d | 2,166 | — | — | Form 4 ↗ | ||
| Battles Michael Louis | Sell F | March 13, 2026 | March 17, 2026 | 4d | 1,148 | $289 | $332K | Form 4 ↗ | ||
| MCKIM ALAN S | Sell S | March 4, 2026 | March 5, 2026 | 1d | 100,000 | $293 | $29.3M | indirect | Form 4 ↗ | |
| GERSTENBERG ERIC W | Sell S | February 23, 2026 | February 24, 2026 | 1d | 2,500 | $280 | $700K | Form 4 ↗ | ||
| MCKIM ALAN S | Other G | February 19, 2026 | February 23, 2026 | 4d | 10,000 | — | — | indirect | Form 4 ↗ | |
| MCKIM ALAN S | Sell S | February 19, 2026 | February 23, 2026 | 4d | 100,000 | $281 | $28.1M | indirect | Form 4 ↗ | |
| Gabriel Sharon M. | Sell S | February 20, 2026 | February 20, 2026 | 0d | 3,540 | $282 | $999K | Form 4 ↗ | ||
| Dugas Eric J. | Sell S | February 20, 2026 | February 20, 2026 | 0d | 2,788 | $281 | $784K | Form 4 ↗ | ||
| Welch John R. | Sell S | February 19, 2026 | February 20, 2026 | 1d | 750 | $273 | $205K | Form 4 ↗ | ||
| Battles Michael Louis | Other A | February 1, 2026 | February 3, 2026 | 2d | 10,690 | — | — | Form 4 ↗ | ||
| Battles Michael Louis | Other A | February 1, 2026 | February 3, 2026 | 2d | 10,290 | — | — | Form 4 ↗ | ||
| Battles Michael Louis | Sell F | February 2, 2026 | February 3, 2026 | 1d | 5,205 | $260 | $1.4M | Form 4 ↗ | ||
| Weber Brian P | Other A | February 1, 2026 | February 3, 2026 | 2d | 1,056 | — | — | Form 4 ↗ | ||
| Weber Brian P | Other A | February 1, 2026 | February 3, 2026 | 2d | 3,166 | — | — | Form 4 ↗ | ||
| Weber Brian P | Sell F | February 2, 2026 | February 3, 2026 | 1d | 1,394 | $260 | $362K | Form 4 ↗ | ||
| Underwood Rebecca | Other A | February 1, 2026 | February 3, 2026 | 2d | 838 | — | — | Form 4 ↗ | ||
| Underwood Rebecca | Other A | February 1, 2026 | February 3, 2026 | 2d | 2,513 | — | — | Form 4 ↗ | ||
| Underwood Rebecca | Sell F | February 2, 2026 | February 3, 2026 | 1d | 425 | $260 | $110K | Form 4 ↗ | ||
| Harrison Robert W. | Other A | February 1, 2026 | February 3, 2026 | 2d | 430 | — | — | Form 4 ↗ | ||
| Harrison Robert W. | Other A | February 1, 2026 | February 3, 2026 | 2d | 1,003 | — | — | Form 4 ↗ | ||
| Harrison Robert W. | Sell F | February 2, 2026 | February 3, 2026 | 1d | 184 | $260 | $48K | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Other A | February 1, 2026 | February 3, 2026 | 2d | 10,690 | — | — | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Other A | February 1, 2026 | February 3, 2026 | 2d | 10,290 | — | — | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Sell F | February 2, 2026 | February 3, 2026 | 1d | 4,934 | $260 | $1.3M | Form 4 ↗ | ||
| Geer Charles H. II | Other A | February 1, 2026 | February 3, 2026 | 2d | 503 | — | — | Form 4 ↗ | ||
| Geer Charles H. II | Other A | February 1, 2026 | February 3, 2026 | 2d | 1,843 | — | — | Form 4 ↗ | ||
| Geer Charles H. II | Sell F | February 2, 2026 | February 3, 2026 | 1d | 197 | $260 | $51K | Form 4 ↗ | ||
| Gabriel Sharon M. | Other A | February 1, 2026 | February 3, 2026 | 2d | 566 | — | — | Form 4 ↗ | ||
| Gabriel Sharon M. | Other A | February 1, 2026 | February 3, 2026 | 2d | 2,073 | — | — | Form 4 ↗ | ||
| Gabriel Sharon M. | Sell F | February 2, 2026 | February 3, 2026 | 1d | 508 | $260 | $132K | Form 4 ↗ | ||
| Dugas Eric J. | Other A | February 1, 2026 | February 3, 2026 | 2d | 1,022 | — | — | Form 4 ↗ | ||
| Dugas Eric J. | Other A | February 1, 2026 | February 3, 2026 | 2d | 3,066 | — | — | Form 4 ↗ | ||
| Dugas Eric J. | Sell F | February 2, 2026 | February 3, 2026 | 1d | 567 | $260 | $147K | Form 4 ↗ | ||
| Diderich Jeroen | Other A | February 1, 2026 | February 3, 2026 | 2d | 1,047 | — | — | Form 4 ↗ | ||
| Diderich Jeroen | Other A | February 1, 2026 | February 3, 2026 | 2d | 3,141 | — | — | Form 4 ↗ | ||
| Diderich Jeroen | Sell F | February 2, 2026 | February 3, 2026 | 1d | 105 | $260 | $27K | Form 4 ↗ | ||
| CURTIS GEORGE L | Sell F | February 2, 2026 | February 3, 2026 | 1d | 249 | $260 | $65K | Form 4 ↗ | ||
| Gabriel Sharon M. | Sell F | January 2, 2026 | January 5, 2026 | 3d | 525 | $234 | $123K | Form 4 ↗ | ||
| Welch John R. | Other G | December 17, 2025 | December 29, 2025 | 12d | 415 | — | — | late | Form 4 ↗ | |
| Underwood Rebecca | Sell F | December 15, 2025 | December 17, 2025 | 2d | 51 | $241 | $12K | Form 4 ↗ | ||
| Harrison Robert W. | Sell F | December 15, 2025 | December 17, 2025 | 2d | 16 | $241 | $3,851 | Form 4 ↗ | ||
| Geer Charles H. II | Sell F | December 15, 2025 | December 17, 2025 | 2d | 28 | $241 | $6,740 | Form 4 ↗ | ||
| GERSTENBERG ERIC W | Sell S | December 16, 2025 | December 17, 2025 | 1d | 601 | $241 | $145K | Form 4 ↗ | ||
| CURTIS GEORGE L | Other G | December 9, 2025 | December 11, 2025 | 2d | 1,000 | — | — | Form 4 ↗ | ||
| Harrison Robert W. | Sell F | December 1, 2025 | December 3, 2025 | 2d | 122 | $229 | $28K | Form 4 ↗ | ||
| States Lauren | Other G | November 13, 2025 | November 14, 2025 | 1d | 245 | — | — | Form 4 ↗ | ||
| Geer Charles H. II | Sell F | November 1, 2025 | November 4, 2025 | 3d | 294 | $211 | $62K | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| April McClain Delaney | Sell | August 25, 2026 | September 9, 2026 | 15d | — | — | $50K–$100K | dependent | House PTR ↗ | |
| April McClain Delaney | Sell | July 28, 2026 | August 3, 2026 | 6d | — | — | $1,001–$15K | dependent | House PTR ↗ | |
| April McClain Delaney | Sell | July 27, 2026 | August 3, 2026 | 7d | — | — | $1,001–$15K | dependent | House PTR ↗ | |
| April McClain Delaney | Sell | July 24, 2026 | August 3, 2026 | 10d | — | — | $1,001–$15K | dependent | House PTR ↗ | |
| April McClain Delaney | Sell | May 1, 2026 | June 5, 2026 | 35d | — | — | $1,001–$15K | dependent | House PTR ↗ | |
| April McClain Delaney | Sell | April 30, 2026 | May 6, 2026 | 6d | — | — | $1,001–$15K | dependent | House PTR ↗ | |
| April McClain Delaney | Buy | February 23, 2026 | March 10, 2026 | 15d | — | — | $15K–$50K | dependent | House PTR ↗ | |
| April McClain Delaney | Buy | December 3, 2025 | January 5, 2026 | 33d | — | — | $1,001–$15K | dependent | House PTR ↗ |
Related stocks
Tickers traded by the same people who traded CLH, by number of filers in common. It shows overlap in public filings and nothing else.
- TDG Transdigm Group Incorporated Common Stock 1 filer in common
- MORN Morningstar, Inc. - Common Stock 1 filer in common
- LH Labcorp Holdings Inc. Common Stock 1 filer in common
- IDXX IDEXX Laboratories, Inc. - Common Stock 1 filer in common
- WAB Westinghouse Air Brake Technologies Corporation Common Stock 1 filer in common
- FWONK Liberty Media Corporation - Series C Liberty Formula One Common Stock 1 filer in common
- OTIS Otis Worldwide Corporation Common Stock 1 filer in common
- BWXT BWX Technologies, Inc. Common Stock 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 6 | 8 | January 5, 2026 | September 9, 2026 | House Clerk search |
| SEC EDGAR, Form 4 | 64 | 92 | November 4, 2025 | August 18, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.