SEPTInvestingStart Free
Stocks/GOSS/SEC Filings/8-K Nov 10, 2026

GOSS 8-K: SEC filing

Gossamer Bio

Filed with the SEC on Nov 10, 2026 · accession 0001728117-26-000116

GOSS filed a 8-K (current report) with the SEC on Nov 10, 2026. A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The stock moved +6.0% by the first close after the filing.

Summary of the filing

Gossamer Bio issued a press release reporting its financial results for the quarter ended September 30, 2026, furnished as Exhibit 99.1 to this Form 8-K.

For details, click here →How to read a 8-K →

Key details

RegistrantGossamer Bio, Inc.
Chief financial officer and chief operating officerBryan Giraudo

How GOSS stock reacted

Close before

$10.64

Nov 9, 2026

First close after

+5.97%

$11.28

5 trading days

—

Since filing

—

✦ Ask GOAX AI about this filing — what it means for GOSS, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for GOSS?

Click here

Frequently asked questions

What did GOSS file with the SEC on Nov 10, 2026?

GOSS filed a 8-K (SEC filing). Gossamer Bio issued a press release reporting its financial results for the quarter ended September 30, 2026, furnished as Exhibit 99.1 to this Form 8-K.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did GOSS stock react to this filing?

GOSS closed at $10.64 before the filing and $11.28 on Nov 10, 2026 (+5.97%).

Other GOSS SEC filings

  • 10-Q · SEC filingNov 10, 2026
  • SCHEDULE 13G/A · SEC filingNov 6, 2026
  • SCHEDULE 13G · SEC filingNov 6, 2026
  • SCHEDULE 13D/A · Insider sale plannedOct 29, 2026
  • 8-K · SEC filingOct 28, 2026
  • SCHEDULE 13D/A · Insider sale plannedOct 8, 2026
  • 8-K · Delisting noticeSep 28, 2026
  • SCHEDULE 13D/A · Insider sale plannedSep 28, 2026
  • 8-K · Fda approvalSep 23, 2026
  • 8-K · Board changeSep 16, 2026

Get alerts when GOSS files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days
GOSS overviewGOSS analysisGOSS newsLatest SEC filings
Source: SEC EDGAR filing 0001728117-26-000116. The summary and key details are extracted by SEPT from the filing and may contain errors. Price reaction uses daily closing prices. Not financial advice.