Summary
Updated Aug 31, 2026
Henry A. Alpert is Director of GRIFFON CORP (GFF). 3 SEC Form 4 filings on record going back to 2024, most recently on 9 March 2026. Most recent open-market trade: bought $80K of GFF on 9 March 2026. Lifetime open-market purchases: $80K.
Recent Transactions
3Every recent SEC Form 4 transaction Henry A. Alpert 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 Henry A. Alpert 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
- Seth L. Kaplan - $1.43M 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Henry A. Alpert?
Henry A. Alpert is a corporate insider, tracked as Director of GRIFFON CORP (GFF). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Henry A. Alpert last file a Form 4?
The most recent primary Form 4 on record is dated 9 March 2026, one of 3 filings going back to 2024.
Has Henry A. Alpert been buying or selling stock?
Recorded transactions: 1 open-market purchase ($80K) and 0 open-market sales across all tracked filings.
Where can I see all of Henry A. Alpert'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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