David Efraim Rosen is 10% Owner at Radius Health, Inc. (RDUS). They have made 8 open-market trades across 4 companies since 2021, most recently 2025-10-15.
CIK 0001898677
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.
7 open-market purchases totalling $41.4M since 2021, against 1 sale. Across 7 scored buys the stock is down 8.9% at ninety days, and 4.3 points behind the S&P over the same stretch.
7 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 29% | 43% | 43% |
| Avg Move | +0.1% | +7.9% | -8.9% |
| Alpha | -1.2% | +7.9% | -4.3% |
| Scored | 7 | 7 | 7 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| HRTX | BUY | 2025-08-08 | 2025-08-12 | $1.50 | $7.2M | -4.8% | -12.9% | -24.5% |
| TLN | SELL | 2024-12-13 | 2024-12-16 | $204.35 | $2.0B | -2.9% | +9.9% | +0.5% |
| TXMD | BUY | 2022-12-07 | 2022-12-09 | $5.66 | $229K | -4.8% | -17.1% | -32.2% |
| TXMD | BUY | 2022-07-29 | 2022-08-01 | $0.82 | $12K | +11.6% | +22.2% | -21.9% |
| TXMD | BUY | 2022-07-29 | 2022-08-01 | $4.72 | $2.7M | +11.6% | +22.2% | -21.9% |
| TXMD | BUY | 2022-07-15 | 2022-07-19 | $5.66 | $935K | -4.7% | +56.3% | +2.1% |
| RDUS | BUY | 2021-12-13 | 2021-12-15 | $6.90 | $6.4M | -2.9% | -8.6% | +12.0% |
| RDUS | BUY | 2021-12-08 | 2021-12-10 | $7.54 | $24.0M | -5.5% | -6.6% | +24.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.