Steven Leonard Chapman is CEO & President at Natera, Inc. (NTRA). They have made 99 open-market trades across 1 company since 2018, most recently 2026-10-01.
CIK 0001711968
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 99 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NTRA | 96,926 | $38.1M |
Shares reported on the most recent Form 4, priced at the 2026-10-02 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 | 2026-10-01 | 2026-10-02 | $413.31 | $526K | -3.3% | — | — |
| NTRA | SELL · 10b5-1 | 2026-09-01 | 2026-09-03 | $320.99 | $545K | +6.4% | +31.1% | — |
| NTRA | SELL · 10b5-1 | 2026-08-03 | 2026-08-05 | $266.39 | $819K | +16.3% | +21.5% | — |
| NTRA | SELL · 10b5-1 | 2026-07-27 | 2026-07-29 | $256.51 | $1.5M | +26.0% | +29.1% | — |
| NTRA | SELL · 10b5-1 | 2026-06-04 | 2026-06-05 | $221.03 | $9.1M | +4.4% | +30.9% | +50.9% |
| NTRA | SELL · 10b5-1 | 2026-05-01 | 2026-05-05 | $206.16 | $186K | -10.4% | +6.8% | +30.0% |
| NTRA | SELL · 10b5-1 | 2026-04-27 | 2026-04-29 | $204.14 | $1.2M | +1.3% | +13.5% | +28.1% |
| NTRA | SELL | 2026-03-10 | 2026-03-11 | $204.13 | $1.1M | +3.3% | -0.4% | +15.0% |
| NTRA | SELL | 2026-03-02 | 2026-03-03 | $200.02 | $790K | -9.3% | +0.4% | +5.5% |
| NTRA | SELL | 2026-02-02 | 2026-02-04 | $230.72 | $20.8M | +3.3% | -3.1% | +1.1% |
| NTRA | SELL · 10b5-1 | 2026-01-27 | 2026-01-29 | $238.78 | $1.4M | -8.6% | -13.5% | -15.8% |
| NTRA | SELL · 10b5-1 | 2026-01-20 | 2026-01-22 | $234.75 | $17.3M | -6.5% | -14.1% | -14.7% |
| NTRA | SELL | 2026-01-02 | 2026-01-06 | $229.08 | $881K | -8.6% | -22.1% | -19.0% |
| NTRA | SELL · 10b5-1 | 2025-12-01 | 2025-12-03 | $238.07 | $2.1M | -4.5% | -4.3% | -13.4% |
| NTRA | SELL · 10b5-1 | 2025-11-03 | 2025-11-03 | $199.92 | $33.0M | +2.1% | +21.3% | +17.6% |
| NTRA | SELL · 10b5-1 | 2025-10-27 | 2025-10-29 | $191.79 | $2.3M | +6.3% | +22.9% | +23.7% |
| NTRA | SELL · 10b5-1 | 2025-10-21 | 2025-10-22 | $187.95 | $603K | +5.9% | +23.2% | +25.5% |
| NTRA | SELL · 10b5-1 | 2025-09-30 | 2025-10-01 | $160.80 | $7.5M | +7.6% | +22.9% | +42.0% |
| NTRA | SELL · 10b5-1 | 2025-09-02 | 2025-09-05 | $166.75 | $1.4M | +5.5% | +2.5% | +45.6% |
| NTRA | SELL · 10b5-1 | 2025-08-01 | 2025-08-05 | $132.88 | $1.5M | +16.5% | +19.0% | +41.6% |
| NTRA | SELL · 10b5-1 | 2025-07-28 | 2025-07-30 | $139.81 | $1.7M | +11.8% | +19.8% | +35.0% |
| NTRA | SELL · 10b5-1 | 2025-07-21 | 2025-07-22 | $139.29 | $452K | -4.7% | +14.6% | +33.5% |
| NTRA | SELL · 10b5-1 | 2025-07-01 | 2025-07-03 | $166.85 | $1.5M | -7.4% | -14.8% | +0.8% |
| NTRA | SELL · 10b5-1 | 2025-06-02 | 2025-06-04 | $157.11 | $1.9M | +0.6% | -5.1% | +1.3% |
| NTRA | SELL · 10b5-1 | 2025-05-01 | 2025-05-02 | $150.10 | $2.1M | -3.4% | +2.6% | -14.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.