CLEAN HARBORS INCInsider Trading & SEC Form 4 Analysis
Latest CLH SEC Form 4 activity, net insider flow, and the largest recent buyer or seller in one live view.
-$157.3M
Buys minus sales2026.07.01
Latest Form 421
Reporting entitiesPolito Karyn
$135.8KMCKIM ALAN S
$29.3MAutomated_Intelligence_Report :: CLH
Latest CLH insider trading filings show a bearish signal with -$157.3M in net open-market flow across 21 active insiders. The latest Form 4 activity was recorded on 2026.07.01, with Polito Karyn as the largest recent buyer and MCKIM ALAN S as the largest recent seller.
Market dynamics show a negative net capital flow of $157.28M when isolating open-market purchases versus open-market sales. The trading volume is heavily weighted towards open-market executions, providing a clearer signal of insider conviction regarding current valuation levels compared to option-based equity grants.
From a microstructural perspective, the landscape is fragmented. Polito Karyn led the buying pressure, while MCKIM ALAN S registered the largest single offload of shares. Continuous monitoring of these Tier-1 actors is essential, as their liquidity decisions often precede material corporate events or reflect an informed, asymmetric perspective on the future performance of CLH.
$164.67M
USD NOMINAL VALUE21
UNIQUE C-SUITE ENTITIES2026.07.01
ISO_8601 FORMATAutomated_Queries :: Frequently Asked Questions
>Is insider buying outweighing selling at CLH?
Open-market selling volume ($157.42M) currently exceeds buying volume ($0.14M), indicating net liquidation by insiders.
>Who is currently buying CLH stock?
Based on the latest SEC Form 4 filings, Polito Karyn (Officer/Other) has been actively acquiring shares. The total recent insider buying volume stands at $0.14M.
>Are CLH insiders selling their shares?
Yes, we have tracked $157.42M in recent insider liquidations. The most notable recent seller is MCKIM ALAN S, who executed the largest single offload.