What is COMCAST CORP's SEC CIK number?

COMCAST CORP (CMCSA) has SEC CIK number 0001166691. The CIK (Central Index Key) is the permanent identifier the SEC assigns to COMCAST CORP in the EDGAR filing system; it is often written without leading zeros as 1166691.

SEC CENTRAL INDEX KEY

COMCAST CORP CIK Number

The SEC Central Index Key (CIK) for COMCAST CORP (CMCSA).

CIK (CENTRAL INDEX KEY)

0001166691

Also written as 1166691 (without leading zeros).

Company: COMCAST CORP
Ticker: CMCSA

Download CMCSA filings (PDF) →View on SEC EDGAR

What is a CIK number?

A CIK (Central Index Key) is the unique, permanent identifier the U.S. Securities and Exchange Commission assigns to every filer — companies, funds, and individuals — in its EDGAR system. Unlike a stock ticker, a CIK never changes: even if COMCAST CORP changed its ticker or name, its CIK (0001166691) would stay the same.

That stability is why the CIK is the most reliable way to pull a company's filings programmatically. Every 10-K, 10-Q, 8-K, and Form 4 for COMCAST CORP is indexed under CIK 0001166691.

CIK vs ticker — what is the difference?

Ticker (CMCSA) — exchange trading symbol; can change or be reused.
CIK (0001166691) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
Leading zeros are optional: 0001166691 and 1166691 refer to the same filer.

How to use COMCAST CORP's CIK

Paste CIK 0001166691 into EDGAR full-text search to see every filing, or skip the friction and download CMCSA filings as clean PDFs here. To look up any other company's CIK, use the CIK lookup directory.

Source: SEC EDGAR company index (sec.gov). CIK data is public.