Protagonist Therapeutics, Inc SEC filings PTGX
Protagonist Therapeutics, Inc has 706 filings in SEC EDGAR's recent list, going back to Sep 28, 2006. Its latest annual report, Form ARS, was filed on Apr 28, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 5, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| EFFECT | Filing | Aug 16, 2022 | — |
| CORRESP | Letter to the SEC | Aug 12, 2022 | — |
| UPLOAD | Letter from the SEC | Aug 9, 2022 | — |
| EFFECT | Filing | Nov 22, 2019 | — |
| UPLOAD | Letter from the SEC | Nov 21, 2019 | — |
| CORRESP | Letter to the SEC | Nov 20, 2019 | — |
| EFFECT | Filing | Sep 21, 2018 | — |
| CORRESP | Letter to the SEC | Sep 20, 2018 | — |
| UPLOAD | Letter from the SEC | Sep 18, 2018 | — |
| EFFECT | Filing | Oct 5, 2017 | — |
| CORRESP | Letter to the SEC | Oct 3, 2017 | — |
| CORRESP | Letter to the SEC | Sep 27, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 21, 2017 | — |
| CT ORDER | Filing | Sep 1, 2017 | — |
| CT ORDER | Filing | Aug 11, 2016 | — |
| EFFECT | Filing | Aug 10, 2016 | — |
| CERTNAS | Auto-generated paper document | Aug 9, 2016 | — |
| 8-A12B/A | Filing | Aug 9, 2016 | — |
| CORRESP | Letter to the SEC | Aug 8, 2016 | — |
| CORRESP | Letter to the SEC | Aug 8, 2016 | — |
| 8-A12B | Form 8-a12b | Aug 5, 2016 | — |
| CORRESP | Letter to the SEC | Jul 26, 2016 | — |
| UPLOAD | Letter from the SEC | Jul 5, 2016 | — |
| DRSLTR | Filing | Jun 22, 2016 | — |
| DRS/A | Filing | Jun 22, 2016 | — |
| UPLOAD | Letter from the SEC | May 27, 2016 | — |
| DRS | Filing | May 3, 2016 | — |
| D | Filing | Jul 24, 2015 | — |
| D | Filing | Jun 11, 2013 | — |
| REGDEX | Auto-generated paper document | Sep 28, 2006 | — |
Showing 30 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
- PTGX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Newark, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1377121
- Former names
- Protagonist Therapeutics Inc (until Jun 11, 2013); Protagonist Inc (until Sep 28, 2006)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.