Adaptive Biotechnologies Corp — Director's Dealing 2020

May 29, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Adaptive Biotechnologies Corp (ADPT)
CIK: 0001478320
Period of Report: 2020-05-26

Reporting Person: Taylor Stacy L (SVP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-05-26	Common Stock	M	1109	$7.80	Acquired	2409	Direct
2020-05-26	Common Stock	M	1771	$6.55	Acquired	4180	Direct
2020-05-26	Common Stock	S	2880	$42.00	Disposed	1300	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-26	Stock Option (Right to Buy)	$7.80	M	1109	Disposed	2029-04-23	Common Stock (1109)	Direct
2020-05-26	Stock Option (Right to Buy)	$6.55	M	1771	Disposed	2028-04-24	Common Stock (1771)	Direct

Footnotes

F1: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 22, 2019.

F2: The options vested with respect to 1/4 of such shares on April 23, 2020, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.

F3: The options vested with respect to 1/4 of such shares on March 12, 2019, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.