Gossamer Bio (GOSS) Director John D. Quisel Receives 10,000-Share Option Grant

What Happened John D. Quisel, a member of the board of directors of Gossamer Bio, Inc. (GOSS), was granted a derivative award representing 10,000 shares on 2026-09-23. The reported acquisition price is $0.00 (total reported value $0). The filing (Accession 0001628280-26-063606) was submitted on 2026-09-25. This transaction is an award/grant of a derivative security (an option-type award), not an open-market purchase or sale.

Key Details

• Transaction date: 2026-09-23; Filing date: 2026-09-25 (appears filed within the typical 2-business-day Form 4 window).
• Instrument: Derivative award reported as 10,000 shares acquired at $0.00.
• Shares owned after transaction: Not specified in the provided excerpt.
• Footnote: The entire option becomes fully vested and exercisable on the first anniversary of the grant date, subject to continued service on the board.
• Transaction code: A (Grant, award or other acquisition).

Context This was a derivative grant that vests on the first anniversary of the grant date, meaning Quisel does not immediately receive free, tradable shares—the award becomes exercisable only if he remains on the board through the vesting date. Such grants are commonly used for director compensation or retention and differ from open-market purchases or sales, which can more directly signal an insider's personal trading decision.