8-K current report · filed Aug 26, 2026

Gossamer Bio, Inc. (GOSS) 8-K Current Report: August 26, 2026

Item 5.03GOSS overview

Short answer

Gossamer Bio, Inc. (GOSS) filed an 8-K current report with the SEC on August 26, 2026 reporting Item 5.03 (Amendments to Articles of Incorporation or Bylaws). Series A-1 convertible preferred stock formally established through a Delaware Certificate of Designation filing.

Gossamer Bio, Inc. 8-K event analysis

AI summary of each reported item and its exhibits

Item 5.03 · Amendments to Articles of Incorporation or Bylaws

  • Series A-1 convertible preferred stock formally established through a Delaware Certificate of Designation filing
  • Amendment completed August 24, 2026, alongside the previously announced private placement
  • Preferred-stock terms may affect common shareholders through conversion rights and seniority over common equity

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