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Insider · CIK 0001954916

Robert W. Harrison

officer

Files at CLH (CLEAN HARBORS INC). First filing -, latest -.

Robert W. Harrison files SEC Form 4 as officer at CLH (CLEAN HARBORS INC). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.

A track record needs three past buys with six months of prices behind them; Robert W. Harrison has 0, so none is measured yet.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold

Signals

This insider’s open-market buys and sells, scored.

No scored open-market trades yet.

Transactions

Every row this insider has filed, 12 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Mar 13, 2026CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-18$288.93$5,2017,016Mar 17, 2026
Mar 13, 2026CLH
CLEAN HARBORS INC
DDisposition to issuer
Common Stock
-368$0.00$06,648Mar 17, 2026
Feb 2, 2026CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-184$259.91$48k5,601Feb 3, 2026
Feb 1, 2026CLH
CLEAN HARBORS INC
AGrant or award
Common Stock
+1,003$0.00$06,604Feb 3, 2026
Feb 1, 2026CLH
CLEAN HARBORS INC
AGrant or award
Common Stock
+430$0.00$07,034Feb 3, 2026
Dec 15, 2025CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-16$240.71$3,8515,785Dec 17, 2025
Dec 1, 2025CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-122$228.54$28k5,801Dec 3, 2025
Mar 17, 2025CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-35$192.90$6,7525,923Mar 18, 2025
Feb 1, 2025CLH
CLEAN HARBORS INC
AGrant or award
Common Stock
+443$0.00$04,925Feb 4, 2025
Feb 1, 2025CLH
CLEAN HARBORS INC
AGrant or award
Common Stock
+1,033$0.00$05,958Feb 4, 2025
Dec 15, 2024CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-28$244.28$6,8404,482Dec 17, 2024
Dec 1, 2024CLH
CLEAN HARBORS INC
FTax withholding
Common Stock
-122$260.09$32k4,510Dec 2, 2024

Questions about Robert W. Harrison

Answered from the filings on this page, as of the latest one.

Is Robert W. Harrison buying or selling?

Robert W. Harrison has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.

How did Robert W. Harrison's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Robert W. Harrison has 0.

Where does Robert W. Harrison file Form 4?

Robert W. Harrison has filed Form 4 at CLH (CLEAN HARBORS INC) as EVP, EHS. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Robert W. Harrison: insider trades and track record | InsiderTell