Chad M. Robins is CEO & Chairman at Adaptive Biotechnologies Corp (ADPT). They have made 31 open-market trades across 1 company since 2020, most recently 2026-08-18.
CIK 0001780649
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 31 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ADPT | 2,180,518 | $52.4M |
Shares reported on the most recent Form 4, priced at the 2026-08-19 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 |
|---|---|---|---|---|---|---|---|---|
| ADPT | SELL | 2026-08-17 | 2026-08-19 | $24.80 | $14.9M | -1.7% | +13.0% | — |
| ADPT | SELL · 10b5-1 | 2026-04-06 | 2026-04-08 | $14.65 | $1.8M | -0.8% | -6.1% | +41.7% |
| ADPT | SELL | 2026-03-11 | 2026-03-13 | $13.17 | $6.2M | +5.5% | +5.4% | +39.6% |
| ADPT | SELL | 2026-02-27 | 2026-03-03 | $15.85 | $8.3M | -18.5% | -8.3% | -5.6% |
| ADPT | SELL · 10b5-1 | 2026-02-02 | 2026-02-04 | $18.44 | $2.3M | -8.0% | -13.5% | -19.6% |
| ADPT | SELL · 10b5-1 | 2026-01-05 | 2026-01-07 | $15.59 | $1.9M | +8.2% | -4.5% | -17.0% |
| ADPT | SELL · 10b5-1 | 2025-11-26 | 2025-12-01 | $19.10 | $6.1M | -18.2% | -13.8% | -14.4% |
| ADPT | SELL · 10b5-1 | 2025-11-10 | 2025-11-12 | $14.73 | $2.6M | +44.3% | +8.9% | +10.3% |
| ADPT | SELL | 2025-03-05 | 2025-03-06 | $7.29 | $3.2M | -4.3% | +0.3% | +29.9% |
| ADPT | SELL · 10b5-1 | 2025-02-19 | 2025-02-21 | $8.45 | $4.8M | -2.4% | +5.2% | +7.4% |
| ADPT | SELL · 10b5-1 | 2025-02-13 | 2025-02-18 | $8.47 | $6.2M | +1.5% | -4.8% | +13.0% |
| ADPT | SELL | 2024-03-05 | 2024-03-06 | $3.43 | $314K | -12.6% | -29.1% | -6.9% |
| ADPT | SELL | 2022-03-07 | 2022-03-09 | $11.80 | $1.0M | +2.3% | +0.2% | -43.9% |
| ADPT | SELL | 2022-03-07 | 2022-03-08 | $12.01 | $106K | +5.6% | +8.7% | -43.9% |
| ADPT | SELL | 2021-09-08 | 2021-09-10 | $38.43 | $3.3M | +1.4% | -17.9% | -28.4% |
| ADPT | SELL | 2021-07-12 | 2021-07-14 | $38.24 | $115K | +7.7% | -7.0% | -4.3% |
| ADPT | SELL | 2021-06-15 | 2021-06-17 | $38.57 | $1.5M | +6.6% | -6.5% | -7.5% |
| ADPT | SELL | 2021-04-06 | 2021-04-08 | $41.85 | $751K | -3.8% | -23.1% | -10.4% |
| ADPT | SELL | 2021-03-17 | 2021-03-19 | $42.89 | $975K | -5.9% | -3.4% | -6.9% |
| ADPT | SELL | 2021-02-08 | 2021-02-10 | $62.26 | $3.5M | -10.2% | -34.4% | -47.6% |
| ADPT | SELL | 2021-01-26 | 2021-01-28 | $60.05 | $2.7M | +6.8% | -0.5% | -25.4% |
| ADPT | SELL | 2021-01-19 | 2021-01-21 | $70.43 | $592K | -9.5% | -15.0% | -36.8% |
| ADPT | SELL | 2020-12-28 | 2020-12-30 | $59.82 | $5.7M | +5.4% | -6.4% | -36.6% |
| ADPT | SELL | 2020-11-17 | 2020-11-19 | $46.93 | $4.3M | +2.5% | +34.0% | +33.5% |
| ADPT | SELL | 2020-10-06 | 2020-10-08 | $50.10 | $6.7M | -5.0% | -5.3% | +10.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.