R. Mark Adams - Oct 7, 2021 Form 4 Insider Report for Adaptive Biotechnologies Corp (ADPT)

Role: Chief Operating Officer
Signature: /s/ R. Mark Adams by Eric Billings, attorney-in-fact
Stock symbol: ADPT
Transactions as of: Oct 7, 2021
Transactions value $: -$103,630
Form type: 4
Date filed: 10/8/2021, 07:00 PM
Previous filing: Jul 8, 2021
Next filing: Jan 10, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADPT	Common Stock	Sale	-$43K	-1.32K	-2.41%	$32.47^*	53.7K	Oct 7, 2021	Direct	F1
transaction	ADPT	Common Stock	Sale	-$60.6K	-1.8K	-3.36%	$33.67^*	51.9K	Oct 8, 2021	Direct	F2

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

Explanation of Responses:

Id	Content
F1	This transaction represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.
F2	The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2021.

Content

This transaction represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2021.