Michelle Renee Griffin - 11 Mar 2026 Form 4 Insider Report for Adaptive Biotechnologies Corp (ADPT)

Role: Director
Signature: /s/ Michelle Renee Griffin by Kyle Piskel, Attorney-in-Fact
Issuer symbol: ADPT
Transactions as of: 11 Mar 2026
Net transactions value: -$214,131
Form type: 4
Filing time: 13 Mar 2026, 21:05:15 UTC
Previous filing: 06 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GRIFFIN MICHELLE RENEE	Director	C/O ADAPTIVE BIOTECHNOLOGIES CORPORATION, 1165 EASTLAKE AVENUE EAST, SEATTLE	/s/ Michelle Renee Griffin by Kyle Piskel, Attorney-in-Fact	13 Mar 2026	0001229765

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADPT	Common Stock	Sale	$214,131	-15,394	-50%	$13.91	15,625	11 Mar 2026	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The price reported for this transaction is a weighted-average price. The shares were sold in multiple transactions ranging from $13.84 to $13.96, inclusive. The reporting person undertakes to provide to Adaptive Biotechnologies Corporation, any security holder of Adaptive Biotechnologies Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in any footnotes to this Form 4.

Content

The price reported for this transaction is a weighted-average price. The shares were sold in multiple transactions ranging from $13.84 to $13.96, inclusive. The reporting person undertakes to provide to Adaptive Biotechnologies Corporation, any security holder of Adaptive Biotechnologies Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in any footnotes to this Form 4.