Protagonist Therapeutics, Inc (PTGX) SEC filings and CIK.
PTGX’s SEC Central Index Key (CIK) is 0001377121, or 1377121 without leading zeros. The SEC’s ticker file lists it as Protagonist Therapeutics, Inc.
- Ticker
- PTGX
- CIK
- 0001377121
- Other tickers
- None
- Insider transactions, Q3 2026
- 11
Insider trading
In Q3 2026, insiders at Protagonist Therapeutics, Inc reported 11 non-derivative transactions on 3 Forms 3, 4 and 5, including 0 open-market purchases and 5 sales. See every PTGX insider transaction →
Recent filings we observed
| Filed | Form | Accession |
|---|---|---|
| 2026-11-06 | 10-Q | 0001104659-26-123620 |
Get PTGX SEC data through the API
curl "https://sec-api.dev/api/v1/filings?cik=1377121&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/companies/1377121" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/facts/1377121?taxonomy=us-gaap&concept=Revenues&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"Ticker to CIK API · SEC filings API · Protagonist Therapeutics, Inc on SEC.gov
Questions
What is PTGX’s CIK number?
PTGX’s SEC Central Index Key (CIK) is 0001377121, or 1377121 without leading zeros. The SEC’s ticker file lists it as Protagonist Therapeutics, Inc.
How do I find Protagonist Therapeutics, Inc’s 10-K?
Request /api/v1/filings?cik=1377121&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.
Plain-text version for agents and LLMs: /companies/ptgx.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.