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.
Ian Isaacs - $722K in GLRE purchases and sales in the last 12 months
Greg Richardson - $637K in GLRE purchases and sales in the last 12 months
Sherry Diaz - $204K in GLRE purchases and sales in the last 12 months
Leonard R. Goldberg - $186K in GLRE purchases and sales in the last 12 months
David Sigmon - $130K in GLRE purchases and sales in the last 12 months
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.
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
9
The latest 9 SEC Form 4 transactions reported by Joseph P. Platt Jr..
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 recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
