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Reporting person on SEC Form 4
John R. Welch
John R. Welch is Director at Clean Harbors. OQRO lists 3 transactions filed with the SEC under this name, the latest on May 22, 2026, each linked to the official Form 4.
Director
Disclosures on record
3
Companies involved
1
Disclosure history
Clean HarborsCLH
3 disclosures · Dec 2025 – May 2026 · 1 sold
May 20, 2026652disclosed May 22
DetailsOfficial recordFeb 19, 2026Sold~$205Kdisclosed Feb 21
DetailsOfficial recordDec 17, 2025415disclosed Dec 30
DetailsOfficial record- All activity in Clean Harbors
