Quick Takeaways
- RTW INVESTMENTS, LP filed SCHEDULE 13G/A for Protagonist Therapeutics, Inc Common Stock, $0.00001 par value (PTGX).
- Disclosed ownership: 8.1%.
- Date of event: 31 Dec 2025.
RTW INVESTMENTS, LP - 31 Dec 2025 SCHEDULE 13G/A Report for Protagonist Therapeutics, Inc Common Stock, $0.00001 par value (PTGX)
- Filing Manager
- RTW INVESTMENTS, LP
- Reporting Manager
- RTW Investments, LP
- Symbol
- PTGX
- Shares outstanding
- 62,457,444 shares
- Disclosed Ownership
- 5,059,053 shares
- Ownership
- 8.1%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 08:41:45 UTC
- Date of event
- 31 Dec 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"RTW INVESTMENTS, LP disclosed 8.1% ownership in Protagonist Therapeutics, Inc Common Stock, $0.00001 par value (PTGX) on 31 Dec 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 17 Feb 2026, 08:41.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| RTW Investments, LP | 8.1% | 5,059,053 | 0 | 5,059,053 | /s/ Roderick Wong, M.D. | Roderick Wong, M.D., Managing Partner | |
| Roderick Wong | 8.1% | 5,059,053 | 0 | 5,059,053 | s/ Roderick Wong, M.D. | Roderick Wong, M.D. |