Herm Rosenman is Director at Natera, Inc. (NTRA). They have made 10 open-market trades across 3 companies since 2007, most recently 2026-06-26.
CIK 0001230057
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.
4 open-market purchases totalling $296K since 2018, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NTRA | 5,821 | $2.3M |
| VVUS | 311,671 | $145K |
| OXFD | 4,081 | $90K |
| GPRO | 25,934 | $27K |
| DMTK | 134,576 | $13K |
| Total | $2.6M |
Shares reported on the most recent Form 4, priced at the 2026-06-30 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NTRA | SELL · 10b5-1 | 2026-06-24 | 2026-06-26 | $250.00 | $4.1M | +6.0% | -2.9% | +53.7% |
| NTRA | SELL | 2025-12-12 | 2025-12-16 | $227.42 | $22.0M | +1.5% | +5.5% | -13.2% |
| NTRA | SELL | 2024-02-16 | 2024-02-16 | $69.37 | $13.0M | +25.9% | +31.2% | +57.9% |
| DMTK | BUY | 2022-05-09 | 2022-05-31 | $6.86 | $137K | -23.3% | -17.8% | -19.6% |
| NTRA | SELL | 2021-11-08 | 2021-11-09 | $117.23 | $9.6M | -7.1% | -17.5% | -37.0% |
| NTRA | SELL | 2021-11-08 | 2021-11-09 | $17.13 | $671K | -7.1% | -17.5% | -37.0% |
| VVUS | BUY | 2018-06-01 | 2018-06-05 | $0.77 | $39K | +19.9% | +4.3% | -22.1% |
| VVUS | BUY | 2018-05-29 | 2018-05-31 | $0.79 | $40K | +4.9% | -9.2% | -23.6% |
| VVUS | BUY | 2018-05-21 | 2018-05-23 | $0.81 | $81K | -24.6% | -20.7% | -35.5% |
| NTRA | SELL · 10b5-1 | 2017-04-05 | 2017-04-10 | $8.55 | $15K | +1.9% | +29.6% | +30.1% |
| NTRA | SELL · 10b5-1 | 2017-03-02 | 2017-03-06 | $9.73 | $18K | -7.5% | -9.9% | +10.7% |
| NTRA | SELL · 10b5-1 | 2017-02-02 | 2017-02-06 | $8.95 | $16K | +7.0% | -11.9% | +2.1% |
| NTRA | SELL · 10b5-1 | 2017-01-04 | 2017-01-06 | $11.87 | $22K | -15.0% | -19.9% | -25.7% |
| NTRA | SELL · 10b5-1 | 2016-12-06 | 2016-12-07 | $11.83 | $22K | +2.7% | +0.3% | -13.8% |
| NTRA | SELL · 10b5-1 | 2016-11-03 | 2016-11-04 | $7.98 | $15K | +34.6% | +36.3% | +6.7% |
| NTRA | SELL | 2016-10-06 | 2016-10-07 | $11.53 | $41K | -12.2% | -21.7% | +1.0% |
| NTRA | SELL · 10b5-1 | 2016-09-06 | 2016-09-07 | $10.21 | $19K | -4.3% | +7.2% | +10.8% |
| NTRA | SELL | 2016-08-02 | 2016-08-04 | $12.98 | $24K | -18.2% | -19.5% | -38.7% |
| NTRA | SELL · 10b5-1 | 2016-07-06 | 2016-07-08 | $12.10 | $22K | +3.8% | -8.6% | -8.5% |
| NTRA | SELL · 10b5-1 | 2016-06-02 | 2016-06-03 | $12.04 | $22K | -4.8% | -0.7% | -17.7% |
| GPRO | SELL · 10b5-1 | 2007-08-06 | 2007-08-08 | $65.09 | $3.3M | -16.8% | +6.4% | +6.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.