What is FASTENAL CO's SEC CIK number?

FASTENAL CO (FAST) has SEC CIK number 0000815556. The CIK (Central Index Key) is the permanent identifier the SEC assigns to FASTENAL CO in the EDGAR filing system; it is often written without leading zeros as 815556.

SEC CENTRAL INDEX KEY

FASTENAL CO CIK Number

The SEC Central Index Key (CIK) for FASTENAL CO (FAST).

CIK (CENTRAL INDEX KEY)

0000815556

Also written as 815556 (without leading zeros).

Company: FASTENAL CO
Ticker: FAST

Download FAST 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 FASTENAL CO changed its ticker or name, its CIK (0000815556) 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 FASTENAL CO is indexed under CIK 0000815556.

CIK vs ticker — what is the difference?

Ticker (FAST) — exchange trading symbol; can change or be reused.
CIK (0000815556) — SEC filer ID; permanent, one per filer, used across all EDGAR filings.
Leading zeros are optional: 0000815556 and 815556 refer to the same filer.

How to use FASTENAL CO's CIK

Paste CIK 0000815556 into EDGAR full-text search to see every filing, or skip the friction and download FAST 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.