Summary
Updated Aug 30, 2026
Irwin Katsof files SEC Form 4 reports at IDT CORP (IDT). 4 SEC Form 4 filings on record going back to 2024, most recently on 15 June 2026. Most recent open-market trade: sold $133K of IDT on 15 June 2026. Lifetime open-market sales: $133K.
Recent Transactions
4Every recent SEC Form 4 transaction Irwin Katsof 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 Irwin Katsof 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.
- Bill Pereira - $2.45M of IDT open-market activity in the last 12 months
- Marcelo Fischer - $2.03M of IDT open-market activity in the last 12 months
- Menachem Ash - $1.53M of IDT open-market activity in the last 12 months
- Joyce J. Mason - $539K of IDT open-market activity in the last 12 months
- Avi Goldin - $175K of GNE open-market activity in the last 12 months
- Eric F. Cosentino - $38K of IDT 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 Irwin Katsof?
Irwin Katsof is a corporate insider of IDT CORP (IDT). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Irwin Katsof submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Irwin Katsof been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($133K) across all tracked filings.
Where can I see all of Irwin Katsof'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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