InsiderTrades

Form 4 for GOSS Gossamer Bio, Inc.

Accepted 2025-10-02 00:00:00 ET · period of report 2025-10-01 · accession 0001867872-25-000003 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2025-10-02 2025-10-01 GOSS Aranda Richard Chief Medical Off A - Grant $0.00 +162.5K 369.4K +79% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-10-01 A A 162,500 $0.00 369,356 D — — (F1) Represents performance stock unit award, which will vest in full upon the earlier of (i) the approval of a new drug application for seralutinib or (ii) a change in control, in either case on or prior to the fourth anniversary of the grant date, and subject to the Reporting Person's continuous service to the Issuer.