Michael D. Price is President at PLATINUM UNDERWRITERS HOLDINGS LTD (PTP). They have made 7 open-market trades across 2 companies since 2007, most recently 2025-09-29.
CIK 0001241508
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $2.9M since 2024, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMBC | BUY | 2025-05-14 | 2025-05-14 | $6.49 | $999K | +18.4% | +0.0% | +18.4% |
| AMBC | BUY | 2024-08-07 | 2024-08-08 | $11.20 | $1.9M | +0.1% | -5.2% | +3.5% |
| PTP | SELL | 2013-08-12 | 2013-08-13 | $58.30 | $1.0M | N/A | N/A | N/A |
| PTP | SELL | 2013-07-31 | 2013-07-31 | $57.52 | $3.0M | N/A | N/A | N/A |
| PTP | SELL | 2010-10-22 | 2010-10-26 | $43.14 | $1.4M | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2010-08-25 | 2010-08-26 | $39.91 | $295K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2010-08-23 | 2010-08-25 | $39.92 | $2.3M | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2010-08-18 | 2010-08-19 | $39.93 | $116K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2010-08-09 | 2010-08-11 | $39.90 | $127K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2009-10-07 | 2009-10-08 | $37.01 | $2.0M | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2009-08-21 | 2009-08-24 | $35.02 | $1.5M | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2009-08-14 | 2009-08-17 | $35.00 | $18K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2009-08-13 | 2009-08-14 | $35.00 | $105K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2009-08-12 | 2009-08-14 | $35.00 | $108K | N/A | N/A | N/A |
| PTP | SELL · 10b5-1 | 2008-12-19 | 2008-12-19 | $35.00 | $690K | N/A | N/A | N/A |
| PTP | SELL | 2007-08-31 | 2007-09-04 | $34.63 | $682K | N/A | N/A | N/A |
| PTP | SELL | 2007-05-14 | 2007-05-16 | $34.90 | $5.8M | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.