Insider tradingForm 4

Adaptive Biotechnologies Corp (ADPT) Insider Trading

27 open-market trades reported since Aug 19, 2026: 0 purchases worth $0 and 27 sales worth $28.8M.

By insider

Insider	Role	Bought	Sells	Sold	Latest
Julie Rubinstein	COO	$0	18	$5.56M	Oct 26, 2026
Susan Bobulsky	Chief Commercial Officer, MRD	$0	2	$226K	Oct 8, 2026
Francis Lo	Chief People Officer	$0	2	$4.00M	Oct 5, 2026
Katey Einterz Owen	Director	$0	1	$250K	Aug 28, 2026
Robert Hershberg	Director	$0	1	$748K	Aug 20, 2026
Chad M. Robins	CEO	$0	2	$14.9M	Aug 19, 2026
Peter M. Neupert	Director	$0	1	$3.14M	Aug 19, 2026

All trades

ADPT insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 26	Oct 26	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	26.04	$309K	−3.0%	Form 4 ↗
Oct 26	Oct 23	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	24.98	$297K	−3.0%	Form 4 ↗
Oct 26	Oct 22	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	24.51	$291K	−3.0%	Form 4 ↗
Oct 21	Oct 21	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.41	$302K	−3.0%	Form 4 ↗
Oct 21	Oct 20	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	24.53	$291K	−3.0%	Form 4 ↗
Oct 21	Oct 19	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	24.05	$286K	−3.0%	Form 4 ↗
Oct 16	Oct 14	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.68	$305K	−3.0%	Form 4 ↗
Oct 16	Oct 15	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.61	$304K	−3.0%	Form 4 ↗
Oct 16	Oct 16	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	24.24	$288K	−3.0%	Form 4 ↗
Oct 13	Oct 9	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	26.41	$314K	−3.0%	Form 4 ↗
Oct 13	Oct 12	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.51	$303K	−3.0%	Form 4 ↗
Oct 13	Oct 13	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.50	$303K	−3.0%	Form 4 ↗
Oct 8	Oct 6	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	27.75	$330K	−3.0%	Form 4 ↗
Oct 8	Oct 7	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	26.40	$314K	−3.0%	Form 4 ↗
Oct 8	Oct 8	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	25.66	$305K	−3.0%	Form 4 ↗
Oct 8	Oct 6	Susan BobulskyChief Commercial Officer, MRD	Chief Commercial Officer, MRD	▼ SELL10b5-1	6,444	30.00	$193K	−1.6%	Form 4 ↗
Oct 5	Oct 1	Francis LoChief People Officer	Chief People Officer	▼ SELL10b5-1	26,792	28.28	$758K	−11%	Form 4 ↗
Oct 5	Oct 5	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	29.19	$347K	−3.0%	Form 4 ↗
Oct 5	Oct 2	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	28.13	$334K	−3.0%	Form 4 ↗
Oct 5	Oct 1	Julie RubinsteinCOO	COO	▼ SELL10b5-1	11,881	28.05	$333K	−3.0%	Form 4 ↗
Sep 18	Sep 16	Francis LoChief People Officer	Chief People Officer	▼ SELL10b5-1	115,406	28.06	$3.24M	−34%	Form 4 ↗
Sep 17	Sep 15	Susan BobulskyChief Commercial Officer, MRD	Chief Commercial Officer, MRD	▼ SELL10b5-1	1,195	27.00	$32K	−0.3%	Form 4 ↗
Aug 28	Aug 26	Katey Einterz OwenDirector	Director	▼ SELL	9,615	26.00	$250K	−11%	Form 4 ↗
Aug 20	Aug 18	Robert HershbergDirector	Director	▼ SELL	30,664	24.40	$748K	−40%	Form 4 ↗
Aug 19	Aug 17	Chad M. RobinsCEO	CEO	▼ SELL	321,324	25.08	$8.06M	−13%	Form 4 ↗
Aug 19	Aug 18	Chad M. RobinsCEO	CEO	▼ SELL	278,676	24.48	$6.82M	−11%	Form 4 ↗
Aug 19	Aug 17	Peter M. NeupertDirector	Director	▼ SELL	124,690	25.15	$3.14M	−49%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings