Adaptive Biotechnologies Corp — Director's Dealing 2024

Mar 7, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Adaptive Biotechnologies Corp (ADPT)
CIK: 0001478320
Period of Report: 2024-03-04

Reporting Person: LO FRANCIS (Chief People Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-03-04	Common Stock	A	99976	—	Acquired	268445	Direct
2024-03-05	Common Stock	S	12887	$3.43	Disposed	255558	Direct
2024-03-05	Common Stock	S	1813	$3.44	Disposed	253745	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-03-04	Stock Option (right to buy)	$3.99	A	150024	Acquired	2034-03-04	Common Stock (150024)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2500	Indirect

Footnotes

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 options vest with respect to 1/4 of such shares on March 4, 2025, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.