Summary
Updated Aug 31, 2026
Seth L. Kaplan is Sr VP, Gen. Counsel and Secy of GRIFFON CORP (GFF). 4 SEC Form 4 filings on record going back to 2024, most recently on 11 February 2026. Most recent open-market trade: sold $39K of GFF on 11 February 2026. Lifetime open-market sales: $2.48M.
Recent Transactions
11Every recent SEC Form 4 transaction Seth L. Kaplan has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Seth L. Kaplan go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Seth L. Kaplan 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.
- Ronald J. Kramer - $19.73M of GFF open-market activity in the last 12 months
- Robert F. Mehmel - $9.40M of GFF open-market activity in the last 12 months
- Brian G. Harris - $3.02M of GFF open-market activity in the last 12 months
- Louis J. Grabowsky - $1.02M of GFF open-market activity in the last 12 months
- W. Christopher Durborow - $920K of GFF open-market activity in the last 12 months
- Kevin F. Sullivan - $370K of GFF 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 Seth L. Kaplan?
Seth L. Kaplan is a corporate insider, tracked as Sr VP, Gen. Counsel and Secy of GRIFFON CORP (GFF). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Seth L. Kaplan last file a Form 4?
The most recent primary Form 4 on record is dated 11 February 2026, one of 4 filings going back to 2024.
Has Seth L. Kaplan been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($2.48M) across all tracked filings.
Where can I see all of Seth L. Kaplan'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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