Company · CIK 1728117 # Gossamer Bio, Inc. | CIK | [1728117](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001728117) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2834 — Pharmaceutical Preparations | | Incorporated in | DE | | Business address | CA | | Listed | GOSS (Nasdaq) | | First annual or quarterly report | 2019-03-22 | ## Offerings 7 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-293009 | Shelf Effective | 2026-01-28 | 2026-03-18 | 2 | | 333-274056 | Shelf Effective | 2023-08-18 | 2023-08-28 | 2 | | 333-274045 | Shelf Withdrawn | 2023-08-17 | 2023-08-18 | 2 | | 333-266701 | Shelf Effective | 2022-08-09 | 2022-08-09 | 1 | | 333-263259 | Shelf Effective | 2022-03-03 | 2022-03-03 | 1 | | 333-237639 | Shelf Effective | 2020-04-10 | 2020-05-19 | 5 | | 333-228984 | IPO Final prospectus | 2018-12-21 | 2019-02-08 | 5 | ## Filings 19 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-03-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1728117/999999999526000860/9999999995-26-000860-index.htm) Declared effective | 333-293009 | 9999999995-26-000860 | | 2026-01-28 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1728117/000172811726000002/0001728117-26-000002-index.htm) Shelf registered | 333-293009 | 0001728117-26-000002 | | 2023-08-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1728117/999999999523002516/9999999995-23-002516-index.htm) Declared effective | 333-274056 | 9999999995-23-002516 | | 2023-08-18 | [S-3](https://www.sec.gov/Archives/edgar/data/1728117/000172811723000116/0001728117-23-000116-index.htm) Shelf registered | 333-274056 | 0001728117-23-000116 | | 2023-08-18 | [RW](https://www.sec.gov/Archives/edgar/data/1728117/000172811723000114/0001728117-23-000114-index.htm) Withdrawn | 333-274045 | 0001728117-23-000114 | | 2023-08-17 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1728117/000172811723000112/0001728117-23-000112-index.htm) Shelf registered | 333-274045 | 0001728117-23-000112 | | 2022-08-09 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1728117/000172811722000086/0001728117-22-000086-index.htm) Shelf registered | 333-266701 | 0001728117-22-000086 | | 2022-03-03 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1728117/000172811722000020/0001728117-22-000020-index.htm) Shelf registered | 333-263259 | 0001728117-22-000020 | | 2020-05-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1728117/000156459020026207/0001564590-20-026207-index.htm) Shelf takedown | 333-237639 | 0001564590-20-026207 | | 2020-05-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1728117/000156459020026204/0001564590-20-026204-index.htm) Shelf takedown | 333-237639 | 0001564590-20-026204 | | 2020-05-18 | [424B5](https://www.sec.gov/Archives/edgar/data/1728117/000156459020026003/0001564590-20-026003-index.htm) Shelf takedown | 333-237639 | 0001564590-20-026003 | | 2020-05-18 | [424B5](https://www.sec.gov/Archives/edgar/data/1728117/000156459020026001/0001564590-20-026001-index.htm) Shelf takedown | 333-237639 | 0001564590-20-026001 | | 2020-04-10 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1728117/000156459020016262/0001564590-20-016262-index.htm) Shelf registered | 333-237639 | 0001564590-20-016262 | | 2019-02-08 | [424B4](https://www.sec.gov/Archives/edgar/data/1728117/000119312519032320/0001193125-19-032320-index.htm) Final prospectus | 333-228984 | 0001193125-19-032320 | | 2019-02-07 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1728117/999999999519000123/9999999995-19-000123-index.htm) Declared effective | 333-228984 | 9999999995-19-000123 | | 2019-01-30 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1728117/000119312519022653/0001193125-19-022653-index.htm) Amendment | 333-228984 | 0001193125-19-022653 | | 2019-01-23 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1728117/000119312519014857/0001193125-19-014857-index.htm) Amendment | 333-228984 | 0001193125-19-014857 | | 2018-12-21 | [S-1](https://www.sec.gov/Archives/edgar/data/1728117/000119312518356444/0001193125-18-356444-index.htm) Registration filed | 333-228984 | 0001193125-18-356444 | | 2018-10-11 | [DRS](https://www.sec.gov/Archives/edgar/data/1728117/000095012318009836/0000950123-18-009836-index.htm) Draft made public | 377-02311 | 0000950123-18-009836 | [All filings of this company](https://equitycapital.markets/filings?cik=1728117) · [CSV](https://equitycapital.markets/filings.csv?cik=1728117) --- Source page: https://equitycapital.markets/company/1728117 · Data: U.S. SEC EDGAR · CC BY 4.0