RUBINSTEIN JULIE (President) sold 13.7% of their position (69.06K shares) of ADAPTIVE BIOTECHNOLOGIES CORP on the open market

Open‑market sale worth $990.5K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales

RUBINSTEIN JULIE

Filed: 4/8/2026ACC: 0001780664-26-000022

InsiderRUBINSTEIN JULIECIK 1780664

→

IssuerADAPTIVE BIOTECHNOLOGIES CORPCIK 1478320

Officer· President

Since Jun 2019

-69.06K

Net shares

Net seller

$990.5K

Total sold

Open market trades

0B · 4S

Total transactions

56.05K acquired · 125.11K disposed

Non-Derivative Transactions8

Common Stock

Direct

M · Option Exercise

+14.72K

Price / share

$7.27

Trade value

$107.03K

% of position

3.3%

4/6/2026

447.20K→461.92K

Common Stock

Direct

S · Sale

−19.06K

Price / share

$14.33

Trade value

$273.13K

% of position

4.1%

4/6/2026

461.92K→442.86K

Common Stock

Direct

M · Option Exercise

+14.72K

Price / share

$7.27

Trade value

$107.03K

% of position

3.3%

4/7/2026

442.86K→457.59K

Common Stock

Direct

S · Sale

−19.06K

Price / share

$13.56

Trade value

$258.45K

% of position

4.2%

4/7/2026

457.59K→438.53K

Common Stock

Direct

M · Option Exercise

+14.72K

Price / share

$7.27

Trade value

$107.03K

% of position

3.4%

4/8/2026

438.53K→453.25K

Common Stock

Direct

M · Option Exercise

+11.88K

Price / share

$12.14

Trade value

$144.24K

% of position

2.6%

4/8/2026

453.25K→465.13K

Common Stock

Direct

S · Sale

−30.84K

Price / share

$14.83

Trade value

$457.37K

% of position

6.6%

4/8/2026

465.13K→434.29K

Common Stock

Direct

S · Sale

−100.00

Price / share

$15.48

Trade value

$1.55K

% of position

0.0%

4/8/2026

434.29K→434.19K

Total

Net shares

−13.01K

Net value

-$525.18K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	4/6/2026	M · Option Exercise	+14.72K	$7.27	$107.03K	3.3%	447.20K	461.92K
Common Stock Direct	4/6/2026	S · Sale	−19.06K	$14.33	$273.13K	4.1%	461.92K	442.86K
Common Stock Direct	4/7/2026	M · Option Exercise	+14.72K	$7.27	$107.03K	3.3%	442.86K	457.59K
Common Stock Direct	4/7/2026	S · Sale	−19.06K	$13.56	$258.45K	4.2%	457.59K	438.53K
Common Stock Direct	4/8/2026	M · Option Exercise	+14.72K	$7.27	$107.03K	3.4%	438.53K	453.25K
Common Stock Direct	4/8/2026	M · Option Exercise	+11.88K	$12.14	$144.24K	2.6%	453.25K	465.13K
Common Stock Direct	4/8/2026	S · Sale	−30.84K	$14.83	$457.37K	6.6%	465.13K	434.29K
Common Stock Direct	4/8/2026	S · Sale	−100.00	$15.48	$1.55K	0.0%	434.29K	434.19K
Total			−13.01K		-$525.18K

Derivative Transactions4

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

14.72K shares

−14.72K

Strike price

7.27

Held after

67K

Exercisable

—

4/6/2026

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

14.72K shares

−14.72K

Strike price

7.27

Held after

52.27K

Exercisable

—

4/7/2026

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

14.72K shares

−14.72K

Strike price

7.27

Held after

37.55K

Exercisable

—

4/8/2026

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

11.88K shares

−11.88K

Strike price

12.14

Held after

391.66K

Exercisable

—

4/8/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (right to buy) Direct	Common Stock14.72K shares	4/6/2026	M · Option Exercise	−14.72K	7.27	—	67K
Stock Option (right to buy) Direct	Common Stock14.72K shares	4/7/2026	M · Option Exercise	−14.72K	7.27	—	52.27K
Stock Option (right to buy) Direct	Common Stock14.72K shares	4/8/2026	M · Option Exercise	−14.72K	7.27	—	37.55K
Stock Option (right to buy) Direct	Common Stock11.88K shares	4/8/2026	M · Option Exercise	−11.88K	12.14	—	391.66K