Company · ARQQ · CIK 1859690

Arqit Quantum Inc. (ARQQ) SEC filings and CIK.

ARQQ’s SEC Central Index Key (CIK) is 0001859690, or 1859690 without leading zeros. The SEC’s ticker file lists it as Arqit Quantum Inc..

Ticker: ARQQ
CIK: 0001859690
Other tickers: None
Insider transactions, Q3 2026: 35

Insider trading

In Q3 2026, insiders at Arqit Quantum Inc. reported 35 non-derivative transactions on 19 Forms 3, 4 and 5, including 0 open-market purchases and 8 sales. See every ARQQ 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 ARQQ SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=1859690&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/1859690" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/1859690?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Arqit Quantum Inc. on SEC.gov

Questions

What is ARQQ’s CIK number?

ARQQ’s SEC Central Index Key (CIK) is 0001859690, or 1859690 without leading zeros. The SEC’s ticker file lists it as Arqit Quantum Inc..

How do I find Arqit Quantum Inc.’s 10-K?

Request /api/v1/filings?cik=1859690&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/arqq.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.