Gossamer Bio closes private placement, files Series A-1 preferred stock designation

Gossamer Bio, Inc.

On Aug 24, 2026, Gossamer Bio filed a Certificate of Designation for Series A-1 Convertible Preferred Stock with Delaware.
Filing made in connection with closing of previously announced private placement; terms incorporated by reference from Aug 21, 2026 8-K.
Certificate of Designation filed as Exhibit 3.1; no new financial details disclosed in this filing.
Company amended its amended and restated certificate of incorporation to effect the designation.

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