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Insider activity — ADPTAdaptive Biotechnologies Corp

22 Form 4 filings for ADPT between 2026-07-17 and 2026-11-03, from 8 filers. 22 discretionary (11 sales, 10 purchases). 21 of 22 carry a dollar total (17 stated, 4 computed as shares × price), summing to $35,196,591; a multi-transaction filing without a stated total contributes only its largest transaction, so the sum is a floor and the true figure is higher. Prices ran $7 to $30.

Filings 22 Filers 8 Discretionary 22 Routine 0 Structured 15/22

Filers
▸RUBINSTEIN JULIEPresident and COO 2026-11-03 · acquired (option exercise) 11,881 @ $12.14 for $928,891 TOTAL BOUGHT ≥ $7,483,31110b5-1 ×88 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-11-03 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $928,891 8 RECEIPT ↗
2026-10-29 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $998,097 8 RECEIPT ↗
2026-10-26 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $897,457 9 RECEIPT ↗
2026-10-21 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $879,088 8 RECEIPT ↗
2026-10-16 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $897,356 8 RECEIPT ↗
2026-10-13 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $919,870 7 RECEIPT ↗
2026-10-08 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $948,223 9 RECEIPT ↗
2026-10-05 acquired (option exercise) 10b5-1 PLAN 11,881 $12.14 $1,014,329 8 RECEIPT ↗
▸BOBULSKY SUSANChief Commercial Officer, MRD 2026-10-08 · sold 6,444 @ $30.00 for $193,320 TOTAL SOLD ≥ $225,58510b5-1 ×55 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-10-08 sold 10b5-1 PLAN 6,444 $30.00 $193,320 1 RECEIPT ↗
2026-09-17 sold 10b5-1 PLAN 1,195 $27.00 $32,265 1 RECEIPT ↗
2026-08-12 sold 10b5-1 PLAN 3,000 $25.00 $75,000 — RECEIPT ↗
2026-08-03 sold 10b5-1 PLAN 1,299 $24.00 $31,176 — RECEIPT ↗
2026-07-20 sold 10b5-1 PLAN 5,000 $23.00 $115,000 — RECEIPT ↗
▸LO FRANCISChief People Officer 2026-10-05 · sold 18,698 @ $28.61 for $757,697 TOTAL SOLD ≥ $6,384,86510b5-1 ×33 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-10-05 sold 10b5-1 PLAN 18,698 $28.61 $757,697 5 RECEIPT ↗
2026-09-18 sold 10b5-1 PLAN 107,537 $28.02 $3,238,004 6 RECEIPT ↗
2026-07-17 sold 10b5-1 PLAN 105,762 $22.59 $2,389,164 4 RECEIPT ↗
▸OWEN KATEY EINTERZrole unstated 2026-09-02 · gifted 12,539 TOTAL SOLD ≥ $249,9902 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-09-02 gifted 12,539 — — 1 RECEIPT ↗
2026-08-28 sold 9,615 $26.00 $249,990 1 RECEIPT ↗
▸HERSHBERG ROBERTrole unstated 2026-08-20 · sold 15,664 @ $24.41 for $748,208 TOTAL SOLD ≥ $748,2081 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-08-20 sold 15,664 $24.41 $748,208 3 RECEIPT ↗
▸ROBINS CHAD Mrole unstated 2026-08-19 · acquired 321,324 @ $6.55 for $14,882,166 TOTAL BOUGHT ≥ $14,882,1661 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-08-19 acquired 321,324 $6.55 $14,882,166 6 RECEIPT ↗
▸NEUPERT PETER Mrole unstated 2026-08-19 · sold 69,690 @ $25.16 for $3,135,850 TOTAL SOLD ≥ $3,135,8501 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-08-19 sold 69,690 $25.16 $3,135,850 4 RECEIPT ↗
▸ROBINS HARLAN Srole unstated 2026-07-23 · acquired 284,800 @ $6.55 10b5-1 ×11 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-07-23 acquired 10b5-1 PLAN 284,800 $6.55 ≥ $1,865,440 3 RECEIPT ↗

8 filers · 22 filings · disclosed filing totals sum to $35,196,591 (17/22 state one, 4 computed; totals are proceeds with a floor, never profit — a Form 4 states what was traded, not what it cost the filer)

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