Susan Bobulsky is CCO at Adaptive Biotechnologies Corp (ADPT). They have made 5 open-market trades across 1 company since 2020, most recently 2026-10-06.
CIK 0001820885
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 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ADPT | 389,350 | $9.4M |
Shares reported on the most recent Form 4, priced at the 2026-10-08 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 · 10b5-1 | 2026-10-06 | 2026-10-08 | $30.00 | $193K | — | — | — |
| ADPT | SELL · 10b5-1 | 2026-09-15 | 2026-09-17 | $27.00 | $32K | +0.3% | — | — |
| ADPT | SELL · 10b5-1 | 2026-08-10 | 2026-08-12 | $25.00 | $75K | +0.4% | -5.0% | — |
| ADPT | SELL · 10b5-1 | 2026-07-30 | 2026-08-03 | $24.00 | $31K | +4.6% | +5.3% | — |
| ADPT | SELL · 10b5-1 | 2026-07-16 | 2026-07-20 | $23.00 | $115K | +11.5% | +17.6% | — |
| ADPT | SELL · 10b5-1 | 2026-07-01 | 2026-07-06 | $22.00 | $11K | +2.6% | +14.1% | +38.5% |
| ADPT | SELL · 10b5-1 | 2026-06-25 | 2026-06-29 | $20.50 | $103K | -2.0% | +5.1% | +32.6% |
| ADPT | SELL · 10b5-1 | 2026-06-11 | 2026-06-15 | $19.00 | $95K | +29.6% | +41.8% | +53.5% |
| ADPT | SELL · 10b5-1 | 2026-06-04 | 2026-06-08 | $18.00 | $198K | +2.5% | +17.8% | +42.2% |
| ADPT | SELL | 2026-03-11 | 2026-03-13 | $13.17 | $544K | +5.5% | +5.4% | +39.6% |
| ADPT | SELL | 2025-03-05 | 2025-03-06 | $6.98 | $363K | -4.3% | +0.3% | +29.9% |
| ADPT | SELL | 2024-03-05 | 2024-03-06 | $3.44 | $45K | -12.6% | -29.1% | -6.9% |
| ADPT | SELL | 2020-12-10 | 2020-12-11 | $55.00 | $1.4M | +14.7% | +10.0% | -24.1% |
| ADPT | SELL | 2020-09-29 | 2020-10-01 | $50.00 | $500K | +9.7% | -5.4% | +22.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.