Gossamer Bio, Inc. SEC filings GOSS
Gossamer Bio, Inc. has 484 filings in SEC EDGAR's recent list, going back to Jan 19, 2018. Its latest annual report, Form ARS, was filed on Apr 24, 2026 for the period ended Apr 24, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (shareholder vote results). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| POS AM | Filing | Mar 17, 2026 | — |
| S-3ASR | Automatic shelf registration | Jan 28, 2026 | — |
| S-8 | Employee stock plan registration | Mar 13, 2025 | — |
| S-8 | Employee stock plan registration | Mar 5, 2024 | — |
| 424B3 | Prospectus | Aug 28, 2023 | — |
| S-3 | Shelf registration | Aug 18, 2023 | — |
| S-3ASR | Automatic shelf registration | Aug 17, 2023 | — |
| S-3ASR | Automatic shelf registration | Aug 9, 2022 | — |
| S-8 | Employee stock plan registration | Mar 3, 2022 | — |
| S-3ASR | Automatic shelf registration | Mar 3, 2022 | — |
| 424B5 | Prospectus supplement | May 19, 2020 | — |
| 424B5 | Prospectus supplement | May 19, 2020 | — |
| FWP | Free writing prospectus | May 19, 2020 | — |
| FWP | Free writing prospectus | May 18, 2020 | — |
| 424B5 | Prospectus supplement | May 18, 2020 | — |
| 424B5 | Prospectus supplement | May 18, 2020 | — |
| S-3ASR | Automatic shelf registration | Apr 10, 2020 | — |
| S-8 | Employee stock plan registration | Feb 8, 2019 | — |
| 424B4 | Prospectus | Feb 8, 2019 | — |
| S-1MEF | Filing | Feb 7, 2019 | — |
| FWP | Free writing prospectus | Jan 30, 2019 | — |
| S-1/A | Amended registration statement | Jan 30, 2019 | — |
| FWP | Free writing prospectus | Jan 24, 2019 | — |
| S-1/A | Amended registration statement | Jan 23, 2019 | — |
| S-1 | Registration statement | Dec 21, 2018 | — |
Showing 25 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- GOSS (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Diego, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1728117
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.