Form4insider filings, from the source

Company · CIK 0001478320 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

Adaptive Biotechnologies Corp · ADPT

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $3.3M · 2net −$3.3M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 SForm 4 →Sep 18, 8:17 pm EDTFrancis LoChief People Officer115,406$28.06$3,238,004220,867−34.3%10b5-1
Sep 16, 2026 MForm 4 →Sep 18, 8:17 pm EDTFrancis LoChief People Officer105,560$9.57$1,010,581336,273—10b5-1
Sep 15, 2026 SForm 4 →Sep 17, 6:50 pm EDTSusan BobulskyChief Commercial Officer, MRD1,195$27.00$32,265395,794−0.30%10b5-1
Aug 31, 2026 GForm 4 →Sep 2, 7:12 pm EDTKatey Einterz OwenDirector12,539——66,100—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 MForm 4 →Sep 18, 8:17 pm EDTFrancis LoChief People Officer105,560——103,142—10b5-1