4processed

Form 4 — Insider Transaction

Gossamer Bio, Inc.(GOSS)

Filing Date

June 4, 2026

Accepted

June 4, 2026

Accession No.

0002015114-26-000001

CIK

0001728117

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Nathan Steven DOther115.0K$0115.0KStock Option (Right to Buy)Jun 4, 2026