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 |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 POS | Filing | Aug 5, 2026 | — |
| S-8 | Employee stock plan registration | Aug 5, 2026 | — |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 18, 2026 | Jun 17, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| ARS | Annual report to shareholders | Apr 28, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 28, 2026 | — |
| DEF 14A | Proxy statement | Apr 28, 2026 | Jun 17, 2026 |
| S-8 | Employee stock plan registration | Feb 25, 2026 | — |
| 10-K | Annual report | Feb 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| S-3ASR | Automatic shelf registration | Aug 6, 2025 | — |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2025 | Aug 6, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 26, 2025 | Jun 20, 2025 |
| 10-Q | Quarterly report | May 6, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 6, 2025 | May 6, 2025 |
| ARS | Annual report to shareholders | Apr 29, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 29, 2025 | — |
| DEF 14A | Proxy statement | Apr 29, 2025 | Jun 20, 2025 |
| 8-K |
Current report
Other events
|
Mar 20, 2025 | Mar 17, 2025 |
| 8-K/A |
Amended current report
Other events
|
Mar 11, 2025 | Mar 8, 2025 |
| 8-K |
Current report
Other events
|
Mar 10, 2025 | Mar 8, 2025 |
| 8-K |
Current report
Other events
|
Mar 3, 2025 | Mar 3, 2025 |
| S-8 | Employee stock plan registration | Feb 21, 2025 | — |
| 10-K | Annual report | Feb 21, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2025 | Feb 21, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 6, 2025 | Jan 1, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 18, 2024 | Nov 13, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K |
Current report
Officer or director change
|
Sep 20, 2024 | Sep 17, 2024 |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2024 | Aug 6, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 26, 2024 | Jun 20, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 7, 2024 | May 7, 2024 |
| ARS | Annual report to shareholders | Apr 26, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 26, 2024 | — |
| DEF 14A | Proxy statement | Apr 26, 2024 | Jun 20, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 12, 2024 | Jun 20, 2024 |
| S-8 | Employee stock plan registration | Feb 27, 2024 | — |
| 10-K | Annual report | Feb 27, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2024 | Feb 27, 2024 |
| 8-K |
Current report
Material agreement
|
Jan 31, 2024 | Jan 31, 2024 |
| 8-K |
Current report
Other events
|
Jan 16, 2024 | Jan 9, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 8, 2024 | Jan 8, 2024 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Officer or director change
|
Oct 30, 2023 | Oct 26, 2023 |
| 424B5 | Prospectus supplement | Aug 11, 2023 | — |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Other events
|
Jul 5, 2023 | Jul 4, 2023 |
| 8-K |
Current report
Listing notice
|
Jul 3, 2023 | Jun 27, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2023 | May 25, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 12, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 12, 2023 | — |
| DEF 14A | Proxy statement | Apr 12, 2023 | May 25, 2023 |
| 8-K |
Current report
Other events
|
Apr 10, 2023 | Apr 4, 2023 |
| 424B5 | Prospectus supplement | Apr 6, 2023 | — |
| 424B5 | Prospectus supplement | Apr 4, 2023 | — |
| S-8 | Employee stock plan registration | Mar 15, 2023 | — |
| 10-K | Annual report | Mar 15, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 15, 2023 | Mar 15, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 10, 2023 | Mar 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 6, 2023 | Jan 1, 2023 |
| 10-Q | Quarterly report | Nov 8, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2022 | Nov 8, 2022 |
| EFFECT | Filing | Aug 16, 2022 | — |
| CORRESP | Letter to the SEC | Aug 12, 2022 | — |
| UPLOAD | Letter from the SEC | Aug 9, 2022 | — |
| S-3 | Shelf registration | Aug 5, 2022 | — |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 2, 2022 | May 26, 2022 |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 4, 2022 | May 4, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 26, 2022 | Apr 25, 2022 |
| DEFA14A | Additional proxy material | Apr 13, 2022 | — |
| DEF 14A | Proxy statement | Apr 13, 2022 | May 26, 2022 |
| 8-K |
Current report
Other events
|
Apr 13, 2022 | Apr 13, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 31, 2022 | Mar 25, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 23, 2022 | Mar 17, 2022 |
| S-8 | Employee stock plan registration | Feb 28, 2022 | — |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2022 | Feb 28, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2022 | Feb 15, 2022 |
| 10-Q | Quarterly report | Nov 3, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2021 | Nov 3, 2021 |
| 8-K |
Current report
Other events
|
Sep 17, 2021 | Sep 17, 2021 |
| 8-K |
Current report
Material agreement
|
Aug 10, 2021 | Aug 4, 2021 |
| 10-Q | Quarterly report | Aug 4, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2021 | Aug 4, 2021 |
| 8-K |
Current report
Material agreement
|
Jul 28, 2021 | Jul 27, 2021 |
| 8-K |
Current report
Other events
|
Jun 17, 2021 | Jun 15, 2021 |
| 424B5 | Prospectus supplement | Jun 17, 2021 | — |
| 424B5 | Prospectus supplement | Jun 14, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 14, 2021 | Jun 14, 2021 |
| 8-K |
Current report
Shareholder vote results
|
May 28, 2021 | May 27, 2021 |
| 10-Q | Quarterly report | May 4, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 4, 2021 | May 4, 2021 |
| DEFA14A | Additional proxy material | Apr 14, 2021 | — |
| DEF 14A | Proxy statement | Apr 14, 2021 | May 27, 2021 |
| S-8 | Employee stock plan registration | Mar 10, 2021 | — |
| 10-K | Annual report | Mar 10, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2021 | Mar 10, 2021 |
| 424B5 | Prospectus supplement | Dec 14, 2020 | — |
| 8-K |
Current report
Other events
|
Dec 11, 2020 | Dec 10, 2020 |
| 424B5 | Prospectus supplement | Dec 10, 2020 | — |
| S-3ASR | Automatic shelf registration | Dec 10, 2020 | — |
| 10-Q | Quarterly report | Nov 4, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 4, 2020 | Nov 4, 2020 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 2, 2020 | Aug 11, 2020 |
| 8-K |
Current report
Other events
|
Sep 11, 2020 | Sep 11, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 13, 2020 | Aug 11, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2020 | May 28, 2020 |
| 424B5 | Prospectus supplement | May 13, 2020 | — |
| 8-K |
Current report
Other events
|
May 12, 2020 | May 11, 2020 |
| 424B5 | Prospectus supplement | May 11, 2020 | — |
| 10-Q | Quarterly report | May 7, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
May 7, 2020 | May 7, 2020 |
| DEFA14A | Additional proxy material | Apr 16, 2020 | — |
| DEF 14A | Proxy statement | Apr 16, 2020 | May 28, 2020 |
| 8-K |
Current report
Auditor change
|
Mar 18, 2020 | Mar 13, 2020 |
| S-8 | Employee stock plan registration | Mar 10, 2020 | — |
| 10-K | Annual report | Mar 10, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2020 | Mar 10, 2020 |
| 8-K |
Current report
Officer or director change
|
Feb 24, 2020 | Feb 18, 2020 |
| 8-K |
Current report
Other events
|
Dec 3, 2019 | Dec 3, 2019 |
| 8-K |
Current report
Material agreement
|
Nov 27, 2019 | Nov 27, 2019 |
| 424B5 | Prospectus supplement | Nov 27, 2019 | — |
| EFFECT | Filing | Nov 22, 2019 | — |
| UPLOAD | Letter from the SEC | Nov 21, 2019 | — |
| CORRESP | Letter to the SEC | Nov 20, 2019 | — |
| 10-Q | Quarterly report | Nov 6, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2019 | Nov 6, 2019 |
| S-3 | Shelf registration | Oct 31, 2019 | — |
| 8-K |
Current report
Material agreement, New debt, Change to shareholder rights
|
Oct 31, 2019 | Oct 30, 2019 |
| 10-Q | Quarterly report | Aug 7, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2019 | Aug 7, 2019 |
| 8-K |
Current report
Shareholder vote results
|
Jun 13, 2019 | Jun 7, 2019 |
| 8-K |
Current report
Officer or director change
|
May 29, 2019 | May 28, 2019 |
| 8-K |
Current report
Officer or director change
|
May 13, 2019 | May 7, 2019 |
| 10-Q | Quarterly report | May 8, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 8, 2019 | May 8, 2019 |
| 8-K |
Current report
Material agreement
|
May 8, 2019 | May 7, 2019 |
| DEFA14A | Additional proxy material | Apr 26, 2019 | — |
| DEF 14A | Proxy statement | Apr 26, 2019 | Jun 7, 2019 |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2019 | Mar 19, 2019 |
| S-8 | Employee stock plan registration | Mar 12, 2019 | — |
| 10-K | Annual report | Mar 12, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2019 | Mar 12, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change
|
Dec 31, 2018 | Dec 21, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 27, 2018 | Nov 27, 2018 |
| 10-Q | Quarterly report | Nov 6, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2018 | Nov 6, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 22, 2018 | Oct 22, 2018 |
| 424B3 | Prospectus | Sep 26, 2018 | — |
| EFFECT | Filing | Sep 21, 2018 | — |
| CORRESP | Letter to the SEC | Sep 20, 2018 | — |
| UPLOAD | Letter from the SEC | Sep 18, 2018 | — |
| S-3 | Shelf registration | Sep 7, 2018 | — |
| 10-Q | Quarterly report | Aug 7, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2018 | Aug 7, 2018 |
| 424B5 | Prospectus supplement | Aug 7, 2018 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Aug 7, 2018 | Aug 6, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 6, 2018 | Aug 6, 2018 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 31, 2018 | May 29, 2018 |
| S-8 | Employee stock plan registration | May 30, 2018 | — |
| DEFA14A | Additional proxy material | May 16, 2018 | — |
| 8-K |
Current report
Officer or director change
|
May 16, 2018 | May 15, 2018 |
| 10-Q | Quarterly report | May 9, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 9, 2018 | May 9, 2018 |
| DEFA14A | Additional proxy material | Apr 18, 2018 | — |
| DEF 14A | Proxy statement | Apr 18, 2018 | May 29, 2018 |
| 8-K |
Current report
Other events
|
Mar 26, 2018 | Mar 26, 2018 |
| S-8 | Employee stock plan registration | Mar 7, 2018 | — |
| 10-K | Annual report | Mar 7, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2018 | Mar 7, 2018 |
Showing 200 filings, the most recent 200. 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)
Other Pharmaceutical Preparations companies
- ELI LILLY & Co LLY
- Johnson & Johnson JNJ
- AbbVie Inc. ABBV
- Merck & Co., Inc. MRK
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- Astrazeneca PLC AZN
- Abbott Laboratories ABT
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.