SEC CENTRAL INDEX KEY

REALTY INCOME CORP CIK Number

The SEC Central Index Key (CIK) for REALTY INCOME CORP (O).

CIK (CENTRAL INDEX KEY)
0000726728
Also written as 726728 (without leading zeros).
Company
REALTY INCOME CORP
Ticker
O
Download O 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 REALTY INCOME CORP changed its ticker or name, its CIK (0000726728) 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 REALTY INCOME CORP is indexed under CIK 0000726728.

CIK vs ticker — what is the difference?

  • Ticker (O) — exchange trading symbol; can change or be reused.
  • CIK (0000726728) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
  • Leading zeros are optional: 0000726728 and 726728 refer to the same filer.

How to use REALTY INCOME CORP's CIK

Paste CIK 0000726728 into EDGAR full-text search to see every filing, or skip the friction and download O 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.