Jyoti Palaniappan - 18 May 2021 Form 4 Insider Report for Adaptive Biotechnologies Corp (ADPT)

Role: SVP, Diagnostics, T-Detect
Signature: /s/ Jyoti Palaniappan by Eric Billings as attorney-in-fact
Issuer symbol: ADPT
Transactions as of: 18 May 2021
Net transactions value: -$8,105
Form type: 4
Filing time: 19 May 2021, 20:00:15 UTC
Next filing: 21 Jun 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADPT	Common Stock	Options Exercise	$14,680	+651	+7.1%	$22.55	9,809	18 May 2021	Direct	F1
transaction	ADPT	Common Stock	Sale	$22,785	-651	-6.6%	$35.00^*	9,158	18 May 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ADPT	Stock Option (Right to Buy)	Options Exercise	$0	-651	-0.6%	$0.000000	106,996	18 May 2021	Common Stock	651	$22.55	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 16, 2020.
F2	The options vested with respect to 1/4 of such shares on March 18, 2021, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.