Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Robert W. Harrison files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Alan S. McKim - $57.38M of CLH open-market activity in the last 12 months
- Eric W. Gerstenberg - $1.80M of CLH open-market activity in the last 12 months
- Brian P. Weber - $1.37M of CLH open-market activity in the last 12 months
- Sharon M. Gabriel - $999K of CLH open-market activity in the last 12 months
- Eric J. Dugas - $784K of CLH open-market activity in the last 12 months
- Andrea Robertson - $248K of CLH open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Robert W. Harrison?
Robert W. Harrison is a corporate insider, tracked as EVP, EHS of CLEAN HARBORS INC (CLH). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Robert W. Harrison last file a Form 4?
The most recent primary Form 4 on record is dated 17 March 2026, one of 5 filings going back to 2024.
Where can I see all of Robert W. Harrison's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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