Matthew Stanton is CSO at Generation Bio Co. (GBIO). They have made 12 open-market trades across 1 company since 2020, most recently 2024-10-15.
CIK 0001814198
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.
0 open-market purchases, against 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GBIO | 247,811 | $1.3M |
Shares reported on the most recent Form 4, priced at the 2024-10-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GBIO | SELL | 2021-09-14 | 2021-09-16 | $28.07 | $126K | -6.1% | -19.7% | -75.6% |
| GBIO | SELL | 2021-09-10 | 2021-09-14 | $25.97 | $78K | -2.0% | -13.5% | -46.4% |
| GBIO | SELL · 10b5-1 | 2021-08-23 | 2021-08-25 | $25.04 | $38K | +8.3% | +7.4% | -19.7% |
| GBIO | SELL · 10b5-1 | 2021-08-10 | 2021-08-11 | $22.63 | $34K | +10.1% | +16.2% | -6.7% |
| GBIO | SELL · 10b5-1 | 2021-07-12 | 2021-07-14 | $25.03 | $75K | -3.4% | +6.9% | +5.4% |
| GBIO | SELL · 10b5-1 | 2021-06-15 | 2021-06-17 | $28.08 | $42K | +5.3% | -19.3% | +5.6% |
| GBIO | SELL | 2021-06-10 | 2021-06-11 | $27.23 | $163K | -5.9% | -12.5% | -6.4% |
| GBIO | SELL | 2021-05-27 | 2021-05-28 | $34.05 | $102K | -20.4% | -22.0% | -29.6% |
| GBIO | SELL | 2021-05-10 | 2021-05-12 | $30.61 | $276K | -3.5% | -13.9% | -25.7% |
| GBIO | SELL | 2021-04-21 | 2021-04-23 | $32.55 | $98K | -5.2% | -14.3% | -40.6% |
| GBIO | SELL · 10b5-1 | 2021-04-16 | 2021-04-20 | $28.03 | $42K | +21.3% | +2.9% | -32.3% |
| GBIO | SELL | 2021-04-12 | 2021-04-14 | $26.24 | $157K | +40.2% | +18.6% | -14.2% |
| GBIO | SELL | 2021-03-10 | 2021-03-12 | $34.85 | $525K | -14.3% | -25.1% | -21.5% |
| GBIO | SELL | 2021-02-10 | 2021-02-12 | $34.60 | $720K | +2.8% | +4.7% | -7.7% |
| GBIO | SELL | 2021-01-14 | 2021-01-15 | $32.06 | $272K | -19.7% | -0.6% | -15.0% |
| GBIO | SELL | 2021-01-11 | 2021-01-13 | $27.67 | $806K | -5.0% | +10.4% | -15.4% |
| GBIO | SELL | 2020-12-10 | 2020-12-14 | $37.58 | $761K | -4.5% | -19.4% | -2.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.