What is Workday, Inc.'s SEC CIK number?

Workday, Inc. (WDAY) has SEC CIK number 0001327811. The CIK (Central Index Key) is the permanent identifier the SEC assigns to Workday, Inc. in the EDGAR filing system; it is often written without leading zeros as 1327811.

SEC CENTRAL INDEX KEY

Workday, Inc. CIK Number

The SEC Central Index Key (CIK) for Workday, Inc. (WDAY).

CIK (CENTRAL INDEX KEY)

0001327811

Also written as 1327811 (without leading zeros).

Company: Workday, Inc.
Ticker: WDAY

Download WDAY 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 Workday, Inc. changed its ticker or name, its CIK (0001327811) 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 Workday, Inc. is indexed under CIK 0001327811.

CIK vs ticker — what is the difference?

Ticker (WDAY) — exchange trading symbol; can change or be reused.
CIK (0001327811) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
Leading zeros are optional: 0001327811 and 1327811 refer to the same filer.

How to use Workday, Inc.'s CIK

Paste CIK 0001327811 into EDGAR full-text search to see every filing, or skip the friction and download WDAY 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.