Protagonist Therapeutics SEC Filings
NASDAQ: PTGXHealth CareBiotechnology: Pharmaceutical PreparationsUSD
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At close: Oct 9, 4:00 PM ET · Delayed 15 min
Protagonist Therapeutics filing overview
This page lists 60 recent SEC filings by Protagonist Therapeutics (PTGX), including 35 4, 8 SCHEDULE 13G/A, 6 8-K, 5 SCHEDULE 13G. The latest annual report (10-K) was filed on Feb 25, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 5, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Aug 5, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
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PTGX SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Oct 2, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Sep 10, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Sep 8, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Aug 13, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 12, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Aug 7, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Aug 5, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Aug 5, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Jun 25, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jun 18, 2026 | 8-K | Departure or Appointment of Directors or Officers; Compensatory Arrangements; Submission of Matters to a Vote of Security Holders | View on EDGAR |
| Jun 11, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jun 1, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| May 14, 2026 | 4/A | OWNERSHIP DOCUMENT | View on EDGAR |
| May 12, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| May 12, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| May 11, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| May 5, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| May 5, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Apr 30, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Apr 29, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Apr 28, 2026 | DEF 14A | FORM- DEF 14A | View on EDGAR |
| Apr 24, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Apr 21, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Mar 27, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Mar 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Mar 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Mar 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Mar 25, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Feb 25, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Feb 25, 2026 | 10-K | Annual report | View on EDGAR |
| Feb 18, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Feb 17, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Feb 10, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Feb 6, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Feb 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 30, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Jan 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 27, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 21, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 21, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 21, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 13, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 12, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jan 6, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Nov 24, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Nov 19, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Nov 14, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Nov 14, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Nov 6, 2025 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Nov 6, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Oct 17, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Oct 14, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |