Gossamer Bio, Inc. 8-K

What Happened
Gossamer Bio, Inc. announced on March 17, 2026 that it issued a press release reporting its financial results for the quarter and fiscal year ended December 31, 2025. The company furnished the press release as Exhibit 99.1 to its Form 8-K. The report was signed by Bryan Giraudo, Chief Operating Officer and Chief Financial Officer.

Key Details

• Filing date: March 17, 2026.
• Period covered: quarter and fiscal year ended December 31, 2025.
• Press release attached as Exhibit 99.1 to the Form 8-K (the press release contains the detailed earnings information).
• The 8-K notes, per Form 8‑K General Instruction B.2, that the furnished press release is not “filed” under Section 18 of the Exchange Act and is not automatically incorporated by reference into other filings.

Why It Matters
This 8-K signals that Gossamer has publicly reported its latest quarterly and full-year earnings—key information for investors tracking revenue, expenses, cash position, guidance or milestones. Because the press release is furnished (not filed), investors should review Exhibit 99.1 for the specific financial figures and any management commentary, and consider that the furnishing carries different legal implications than a filed disclosure.