Adaptive Biotechnologies Corp 4

Director Katey Einterz Owen made a bona fide gift of 12,539 shares of Adaptive Biotechnologies Corp common stock, reducing her direct holdings to 66,100 shares.

On August 31, 2026, Director Katey Einterz Owen reported a disposition of 12,539 shares of Adaptive Biotechnologies Corp common stock characterized as a bona fide gift (transaction code G), with no sale price applicable. Following this gift, her direct beneficial ownership decreased to 66,100 shares of common stock. As the transaction is a non-cash, charitable-style transfer rather than an open-market sale or purchase, it is generally viewed as routine estate or philanthropic activity with limited direct signaling about her view of the company’s valuation.

Filing Facts

CIK

1478320

Ticker

ADPT

Form

4

Source Type

fda

Accession

0001852578-26-000007

Alert Tier

5