Who
Joseph P. Platt Jr.
Director
Company insider
Files Form 4 as: Director, Greenlight Reinsurance; Director, Core Natural Resources; Director, CNX Resources.
In numbers
- Trades disclosed
- 57
- Buys
- 2
- Sells
- 11
- Bought
- $116K
- Sold
- $4.2M
- Companies
- 3
- Companies where not an officer
- 3
- First trade
- 24 May 2007
- Last trade
- 7 Aug 2026
- Last filed
- 7 Aug 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 7 Aug 2026filed 7 Aug 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Code A | —7,992 at $0.00 | filing |
| 7 Aug 2026filed 7 Aug 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Code A | —7,992 at $0.00 | filing |
| 26 May 2026filed 27 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $198K11,747 at $16.87 | filing |
| 26 May 2026filed 27 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $198K11,747 at $16.87 | filing |
| 19 May 2026filed 20 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $425K23,613 at $18.01 | filing |
| 19 May 2026filed 20 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $425K23,613 at $18.01 | filing |
| 14 May 2026filed 18 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $210K12,000 at $17.50 | filing |
| 14 May 2026filed 18 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $210K12,000 at $17.50 | filing |
| 13 May 2026filed 14 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $14K820 at $17.50 | filing |
| 13 May 2026filed 14 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $14K820 at $17.50 | filing |
| 12 May 2026filed 14 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $119K6,820 at $17.50 | filing |
| 12 May 2026filed 14 May 2026 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Sold | $119K6,820 at $17.50 | filing |
| 17 Feb 2026filed 19 Feb 2026 | CNR Core Natural ResourcesCoal | SEC FORM 4 Code A | —1,610 at $0.00 | filing |
| 17 Feb 2026filed 19 Feb 2026 | CNR Core Natural ResourcesCoal | SEC FORM 4 Code A | —1,610 at $0.00 | filing |
| 18 Nov 2025filed 19 Nov 2025 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Bought | $65K5,000 at $12.97 | filing |
| 7 Aug 2025filed 8 Aug 2025 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Code A | —8,046 | filing |
| 18 Feb 2025filed 20 Feb 2025 | CNR Core Natural ResourcesCoal | SEC FORM 4 Code A | —1,674 at $0.00 | filing |
| 18 Feb 2025filed 20 Feb 2025 | CNR Core Natural ResourcesCoal | SEC FORM 4 Code A | —1,674 at $0.00 | filing |
| 9 Aug 2024filed 12 Aug 2024 | GLRE Greenlight ReinsuranceInsurance | SEC FORM 4 Code A | —8,393 at $0.00 | filing |
| 7 May 2024filed 9 May 2024 | CNR Core Natural ResourcesCoal | SEC FORM 4 Code A | —1,733 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.