Company · CIEN · CIK 936395

Ciena Corp (CIEN) SEC filings and CIK.

CIEN’s SEC Central Index Key (CIK) is 0000936395, or 936395 without leading zeros. The SEC’s ticker file lists it as CIENA CORP.

Ticker: CIEN
CIK: 0000936395
Other tickers: None
Insider transactions, Q3 2026: 60

Insider trading

In Q3 2026, insiders at Ciena Corp reported 60 non-derivative transactions on 31 Forms 3, 4 and 5, including 0 open-market purchases and 23 sales. See every CIEN 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 CIEN SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=936395&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/936395" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/936395?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Ciena Corp on SEC.gov

Questions

What is CIEN’s CIK number?

CIEN’s SEC Central Index Key (CIK) is 0000936395, or 936395 without leading zeros. The SEC’s ticker file lists it as CIENA CORP.

How do I find Ciena Corp’s 10-K?

Request /api/v1/filings?cik=936395&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/cien.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.