Summary
Updated Aug 31, 2026
Joseph P. Platt Jr. is Director of GREENLIGHT CAPITAL RE, LTD. (GLRE). 9 SEC Form 4 filings on record going back to 2025, most recently on 7 August 2026. Most recent open-market trade: sold $198K of GLRE on 27 May 2026. Lifetime open-market purchases: $65K. Lifetime open-market sales: $967K.
Recent Transactions
9Every recent SEC Form 4 transaction Joseph P. Platt Jr. has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Joseph P. Platt Jr. go back to 2025: 9 primary Form 4 filings, an average of 4.5 per year. The typical open-market purchase is $65K (1 buy totaling $65K). The largest single buy on record is $65K of GLRE in 2025. Sales side: 5 recorded sales totaling $967K, so the filing history runs sell-heavy by dollar value. 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 Joseph P. Platt Jr. 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.
- Greg Richardson - $637K of GLRE open-market activity in the last 12 months
- Ian Isaacs - $453K of GLRE open-market activity in the last 12 months
- Leonard R. Goldberg - $186K of GLRE open-market activity in the last 12 months
- David Sigmon - $130K of GLRE open-market activity in the last 12 months
- Thomas James Curnock - $125K of GLRE open-market activity in the last 12 months
- Ursuline F. Foley - $65K of GLRE 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 P. Platt Jr.?
Joseph P. Platt Jr. is a corporate insider, tracked as Director of GREENLIGHT CAPITAL RE, LTD. (GLRE). InsiderAlpha holds 9 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Joseph P. Platt Jr. submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Joseph P. Platt Jr. been buying or selling stock?
Recorded transactions: 1 open-market purchase ($65K) and 5 open-market sales ($967K) across all tracked filings.
Where can I see all of Joseph P. Platt Jr.'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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