Free EDGAR tools / CIK lookup
CIK Lookup — find any company's SEC CIK number
A CIK (Central Index Key) is the unique identifier the U.S. Securities and Exchange Commission assigns to every entity that files with EDGAR — public companies, funds, institutional investors, and corporate insiders. A CIK is up to ten digits and is often written zero-padded to ten digits: Apple Inc.'s CIK is 320193, or 0000320193. Unlike a ticker symbol, a CIK is permanent — it never changes when a company rebrands, relists, or delists. Use the lookup below to convert a ticker or company name to its CIK, or paste a CIK to find the filer it belongs to. Results come live from SEC EDGAR data — free, no login required.
Searches SEC-registered companies and other corporate filers by ticker, name, or CIK.
| Company | Ticker | Exchange | CIK |
|---|---|---|---|
| Apple Inc. | AAPL | Nasdaq | 0000320193 |
How do I find a company's CIK number?
Type the company's name or ticker symbol into the lookup above — results come live from SEC EDGAR data. Alternatively, use the SEC's own company search at sec.gov, or open the company's page on edgar.tools, which lists its CIK alongside filings and financials.
How do I convert a ticker symbol to a CIK?
Enter the ticker (for example AAPL or MSFT) in the lookup above. For programmatic use, call the free JSON endpoint: /tools/cik-lookup.json?q=AAPL returns the CIK, company name, and exchange — no API key required.
Is a CIK the same as a ticker symbol?
No. A ticker is an exchange-assigned trading symbol that can change or be reused — Meta's ticker changed from FB to META in 2022, but its CIK (1326801) stayed the same. A CIK is the SEC's permanent identifier and never changes, even if a company rebrands, relists, or goes private.
How many digits is a CIK number?
A CIK is up to ten digits. EDGAR URLs and APIs usually zero-pad it to exactly ten — Apple's CIK 320193 becomes 0000320193. Leading zeros are optional in most SEC search interfaces.
Do people and funds have CIK numbers too?
Yes. Every entity that files with EDGAR gets a CIK: public companies, mutual funds and ETFs, institutional investment managers filing 13F holdings, and corporate insiders filing Form 3, 4, and 5 each have their own CIK. This lookup covers companies and other corporate registrants; to find funds or people, use the Funds and Persons directories on edgar.tools.
Popular company CIK numbers
CIKs for some of the most-searched SEC registrants. Each links to the company's profile with live filings and financials.
| Company | Ticker | CIK |
|---|---|---|
| Apple Inc. | AAPL | 0000320193 |
| Microsoft Corp. | MSFT | 0000789019 |
| NVIDIA Corp. | NVDA | 0001045810 |
| Amazon.com Inc. | AMZN | 0001018724 |
| Alphabet Inc. | GOOGL | 0001652044 |
| Meta Platforms Inc. | META | 0001326801 |
| Tesla Inc. | TSLA | 0001318605 |
| Berkshire Hathaway Inc. | BRK-B | 0001067983 |
| JPMorgan Chase & Co. | JPM | 0000019617 |
| Netflix Inc. | NFLX | 0001065280 |
| Delta Air Lines Inc. | DAL | 0000027904 |
| CAVA Group Inc. | CAVA | 0001639438 |
CIK lookup API for developers and agents
The lookup is also a free JSON endpoint — no API key, no login. Pass a ticker, company name, or CIK as q:
GET https://app.edgar.tools/tools/cik-lookup.json?q=AAPL
{
"query": "AAPL",
"count": 1,
"results": [
{
"cik": 320193,
"cik_padded": "0000320193",
"name": "Apple Inc.",
"ticker": "AAPL",
"exchange": "NASDAQ",
"company_url": "https://app.edgar.tools/companies/AAPL"
}
]
}For richer programmatic access — filings, financial statements, ownership — see the API docs or connect via the MCP server.