Summary
Updated Aug 31, 2026
Joseph S. Koscinski is Vice President, Chief Administrative Officer, General Counsel and Secretary of Ecovyst Inc. (ECVT). 2 SEC Form 4 filings on record, most recently on 6 March 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Joseph S. Koscinski has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Joseph S. Koscinski 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.
- Susan F. Ward - $126K of ECVT open-market activity in the last 12 months
- Sarah Lorance - $113K of ECVT 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 Joseph S. Koscinski?
Joseph S. Koscinski is a corporate insider, tracked as Vice President, Chief Administrative Officer, General Counsel and Secretary of Ecovyst Inc. (ECVT). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Joseph S. Koscinski last file a Form 4?
The most recent primary Form 4 on record is dated 6 March 2026, one of 2 filings going back to 2026.
Where can I see all of Joseph S. Koscinski'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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