Company · BOLD · CIK 1782303

Boundless Bio, Inc. (BOLD) SEC filings and CIK.

BOLD’s SEC Central Index Key (CIK) is 0001782303, or 1782303 without leading zeros. The SEC’s ticker file lists it as Boundless Bio, Inc..

Ticker: BOLD
CIK: 0001782303
Other tickers: None
Insider transactions, Q3 2026: 21

Insider trading

In Q3 2026, insiders at Boundless Bio, Inc. reported 21 non-derivative transactions on 8 Forms 3, 4 and 5, including 16 open-market purchases and 3 sales. See every BOLD insider transaction →

Recent filings we observed

No filings for this CIK appear in our current observation window. The full history is available from the filings endpoint below and on SEC.gov.

Get BOLD SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=1782303&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/1782303" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/1782303?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Boundless Bio, Inc. on SEC.gov

Questions

What is BOLD’s CIK number?

BOLD’s SEC Central Index Key (CIK) is 0001782303, or 1782303 without leading zeros. The SEC’s ticker file lists it as Boundless Bio, Inc..

How do I find Boundless Bio, Inc.’s 10-K?

Request /api/v1/filings?cik=1782303&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/bold.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.