R. Bradley Gray is CEO & President at NanoString Technologies Inc (NSTG). They have made 24 open-market trades across 1 company since 2016, most recently 2026-03-01.
CIK 0001575739
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.
2 open-market purchases totalling $673K since 2022, against 22 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NSTG | BUY | 2023-05-25 | 2023-05-30 | $5.80 | $174K | -9.0% | -34.1% | -54.3% |
| NSTG | BUY | 2022-12-12 | 2022-12-14 | $7.38 | $499K | -20.1% | +18.0% | -5.9% |
| NSTG | SELL | 2022-03-15 | 2022-03-16 | $27.81 | $480K | +1.4% | -33.4% | -59.5% |
| NSTG | SELL | 2022-03-08 | 2022-03-09 | $33.06 | $639K | -3.9% | -0.1% | -53.6% |
| NSTG | SELL | 2021-11-10 | 2021-11-12 | $46.30 | $2.3M | -13.7% | -23.6% | -22.8% |
| NSTG | SELL | 2021-09-08 | 2021-09-10 | $57.92 | $3.8M | -8.7% | -29.3% | -34.1% |
| NSTG | SELL | 2021-05-12 | 2021-05-14 | $52.93 | $3.5M | +6.4% | +24.3% | +17.0% |
| NSTG | SELL | 2021-03-16 | 2021-04-13 | $66.32 | $1.2M | +2.1% | -35.1% | -17.4% |
| NSTG | SELL | 2021-03-16 | 2021-04-13 | $66.00 | $3.2M | +2.1% | -35.1% | -17.4% |
| NSTG | SELL | 2021-03-10 | 2021-03-12 | $61.98 | $4.0M | +0.8% | +8.6% | -5.9% |
| NSTG | SELL | 2021-01-20 | 2021-01-22 | $72.35 | $3.6M | -7.0% | -2.4% | -8.2% |
| NSTG | SELL | 2020-09-09 | 2020-09-11 | $38.82 | $1.7M | +6.8% | -0.5% | +65.6% |
| NSTG | SELL | 2020-07-06 | 2020-07-08 | $37.03 | $1.5M | +0.1% | -5.9% | +16.6% |
| NSTG | SELL | 2020-06-18 | 2020-06-22 | $33.58 | $1.3M | +2.3% | +5.9% | +32.4% |
| NSTG | SELL | 2020-03-09 | 2020-03-11 | $31.61 | $2.6M | -34.1% | -8.9% | +12.7% |
| NSTG | SELL | 2020-02-14 | 2020-02-18 | $33.63 | $673K | +7.5% | -42.5% | -5.2% |
| NSTG | SELL | 2020-02-11 | 2020-02-13 | $31.87 | $637K | +4.6% | -37.7% | -7.8% |
| NSTG | SELL | 2020-01-21 | 2020-01-23 | $29.99 | $600K | -5.7% | +12.0% | -1.0% |
| NSTG | SELL | 2019-08-12 | 2019-08-14 | $24.84 | $2.0M | -10.7% | -17.2% | -12.7% |
| NSTG | SELL | 2019-05-13 | 2019-05-15 | $26.59 | $1.3M | -1.3% | -7.1% | -4.5% |
| NSTG | SELL | 2019-05-13 | 2019-08-14 | $26.59 | $1.3M | -10.7% | -17.2% | -12.7% |
| NSTG | SELL · 10b5-1 | 2019-03-14 | 2019-03-15 | $27.50 | $17K | -10.4% | -7.9% | -6.3% |
| NSTG | SELL | 2019-01-31 | 2019-02-04 | $22.28 | $891K | +2.6% | +21.0% | +21.6% |
| NSTG | SELL | 2019-01-09 | 2019-01-11 | $20.04 | $601K | -6.2% | +5.6% | +24.0% |
| NSTG | SELL · 10b5-1 | 2017-04-03 | 2017-04-05 | $20.58 | $23K | +0.2% | -2.6% | -13.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.