SEC CENTRAL INDEX KEY

CATERPILLAR INC CIK Number

The SEC Central Index Key (CIK) for CATERPILLAR INC (CAT).

CIK (CENTRAL INDEX KEY)
0000018230
Also written as 18230 (without leading zeros).
Company
CATERPILLAR INC
Ticker
CAT
Download CAT 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 CATERPILLAR INC changed its ticker or name, its CIK (0000018230) 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 CATERPILLAR INC is indexed under CIK 0000018230.

CIK vs ticker — what is the difference?

  • Ticker (CAT) — exchange trading symbol; can change or be reused.
  • CIK (0000018230) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
  • Leading zeros are optional: 0000018230 and 18230 refer to the same filer.

How to use CATERPILLAR INC's CIK

Paste CIK 0000018230 into EDGAR full-text search to see every filing, or skip the friction and download CAT 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.