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 |
|---|---|---|---|
| DEF 14A | Proxy statement | Sep 16, 2026 | Oct 27, 2026 |
| PRE 14A | Preliminary proxy statement | Sep 3, 2026 | Sep 3, 2026 |
| DEF 14A | Proxy statement | Jun 9, 2026 | Jul 14, 2026 |
| PRE 14A | Preliminary proxy statement | May 18, 2026 | May 18, 2026 |
| DEFA14A | Additional proxy material | May 18, 2026 | — |
| DEFA14A | Additional proxy material | Apr 24, 2026 | — |
| DEF 14A | Proxy statement | Apr 24, 2026 | Apr 24, 2026 |
| DEFA14A | Additional proxy material | Apr 29, 2025 | — |
| DEF 14A | Proxy statement | Apr 29, 2025 | Apr 28, 2025 |
| DEFA14A | Additional proxy material | Apr 24, 2024 | — |
| DEF 14A | Proxy statement | Apr 24, 2024 | Apr 16, 2024 |
| DEFA14A | Additional proxy material | May 9, 2023 | — |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | — |
| PRE 14A | Preliminary proxy statement | Apr 17, 2023 | — |
| DEFA14A | Additional proxy material | Apr 27, 2022 | — |
| DEF 14A | Proxy statement | Apr 27, 2022 | Jun 9, 2022 |
| DEFA14A | Additional proxy material | Apr 27, 2021 | — |
| DEF 14A | Proxy statement | Apr 27, 2021 | Jun 9, 2021 |
| DEFA14A | Additional proxy material | Apr 27, 2020 | — |
| DEF 14A | Proxy statement | Apr 27, 2020 | Jun 17, 2020 |
| DEFA14A | Additional proxy material | Apr 30, 2019 | — |
| DEF 14A | Proxy statement | Apr 30, 2019 | Jun 10, 2019 |
Showing 23 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.