SEC CENTRAL INDEX KEY

AUTOMATIC DATA PROCESSING INC CIK Number

The SEC Central Index Key (CIK) for AUTOMATIC DATA PROCESSING INC (ADP).

CIK (CENTRAL INDEX KEY)
0000008670
Also written as 8670 (without leading zeros).
Company
AUTOMATIC DATA PROCESSING INC
Ticker
ADP
Download ADP 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 AUTOMATIC DATA PROCESSING INC changed its ticker or name, its CIK (0000008670) 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 AUTOMATIC DATA PROCESSING INC is indexed under CIK 0000008670.

CIK vs ticker — what is the difference?

  • Ticker (ADP) — exchange trading symbol; can change or be reused.
  • CIK (0000008670) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
  • Leading zeros are optional: 0000008670 and 8670 refer to the same filer.

How to use AUTOMATIC DATA PROCESSING INC's CIK

Paste CIK 0000008670 into EDGAR full-text search to see every filing, or skip the friction and download ADP 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.