Chad M. Robins - 04 Mar 2026 Form 4 Insider Report for Adaptive Biotechnologies Corp (ADPT)

Role: CEO and Chairman, Director
Signature: /s/ Chad M Robins by Kyle Piskel, Attorney-in-Fact
Issuer symbol: ADPT
Transactions as of: 04 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Mar 2026, 19:05:10 UTC
Previous filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ROBINS CHAD M	CEO and Chairman, Director	C/O ADAPTIVE BIOTECHNOLOGIES CORPORATION, 1165 EASTLAKE AVENUE EAST, SEATTLE	/s/ Chad M Robins by Kyle Piskel, Attorney-in-Fact	06 Mar 2026	0001780649

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADPT	Common Stock	Award		+127,813	+6.6%	$0.000000^*	2,062,060	04 Mar 2026	Direct
transaction	ADPT	Common Stock	Award		+709,220	+34%	$0.000000^*	2,771,280	06 Mar 2026	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Each performance share unit represents a contingent right to receive one share of the issuer's common stock. The performance share units were granted on March 6, 2023, with respect to the three-year period ending on March 6, 2026. The issuer certified the achievement of the performance goals on March 6, 2026. The performance share units vested on March 6, 2026.