Gregory T. Schiffman is EVP at DENDREON CORP (DNDN). They have made 6 open-market trades across 3 companies since 2006, most recently 2024-12-02.
CIK 0001239011
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.
1 open-market purchase totalling $200K since 2011, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AYRO | SELL · 10b5-1 | 2023-08-01 | 2023-08-03 | $0.82 | $6K | -22.1% | -40.7% | -74.8% |
| AYRO | SELL · 10b5-1 | 2023-05-03 | 2023-05-05 | $0.49 | $3K | +19.4% | +11.1% | +52.4% |
| AYRO | SELL · 10b5-1 | 2023-01-30 | 2023-02-03 | $0.71 | $3K | -4.5% | -21.1% | -36.8% |
| AYRO | SELL · 10b5-1 | 2022-05-11 | 2022-11-03 | $0.74 | $8K | +3.5% | +3.5% | +32.3% |
| AYRO | SELL · 10b5-1 | 2022-01-05 | 2022-01-07 | $1.64 | $4K | -19.2% | -24.4% | -26.3% |
| AYRO | SELL · 10b5-1 | 2021-10-05 | 2021-10-07 | $3.20 | $8K | -3.3% | +2.0% | -50.8% |
| AYRO | SELL · 10b5-1 | 2021-08-04 | 2021-08-06 | $4.30 | $22K | -7.8% | -3.6% | -24.6% |
| AYRO | SELL | 2021-06-03 | 2021-06-07 | $5.12 | $246K | -6.2% | -22.2% | -30.4% |
| DNDN | BUY | 2011-11-07 | 2011-11-07 | $6.66 | $200K | N/A | N/A | N/A |
| DNDN | SELL | 2010-11-19 | 2010-11-22 | $37.84 | $1.0M | N/A | N/A | N/A |
| DNDN | SELL | 2010-04-30 | 2010-05-03 | $56.20 | $3.0M | N/A | N/A | N/A |
| DNDN | SELL | 2009-04-29 | 2009-05-01 | $23.26 | $2.1M | N/A | N/A | N/A |
| VNUS | SELL | 2008-08-21 | 2008-08-25 | $21.78 | $436K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2006-01-05 | 2006-01-06 | $46.90 | $469K | 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.