Company Lookup API Reference

Overview

Company Lookup works by aggregating official SEC EDGAR company filings data. The database includes ~10,000 US public companies with their metadata, SIC codes, contact information, and former names. Data is refreshed daily from SEC submissions.

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

GEThttps://api.apiverve.com/v1/companylookup

1
2

curl "https://api.apiverve.com/v1/companylookup?ticker=AAPL" \
  -H "x-api-key: your_api_key_here"

const res = await fetch('https://api.apiverve.com/v1/companylookup?ticker=AAPL', {
  headers: { 'x-api-key': 'your_api_key_here' },
});

if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);

const { data } = await res.json();
console.log(data);

import requests

res = requests.get(
    "https://api.apiverve.com/v1/companylookup?ticker=AAPL",
    headers={"x-api-key": "your_api_key_here"},
    timeout=15,
)
res.raise_for_status()

print(res.json()["data"])

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/companylookup?ticker=AAPL", nil)
	req.Header.Set("x-api-key", "your_api_key_here")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	out, _ := io.ReadAll(res.Body)
	fmt.Println(string(out))
}

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Parameters

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.

Parameter	Type	Description
`ticker`Required	string	Stock ticker symbol (e.g. AAPL, MSFT, GOOGL) length 1–5

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "count": 1,
    "companies": [
      {
        "ticker": "AAPL",
        "cik": "0000320193",
        "name": "Apple Inc.",
        "tickers": [
          "AAPL"
        ],
        "exchanges": [
          "Nasdaq"
        ],
        "entityType": "operating",
        "sic": "3571",
        "sicDescription": "Electronic Computers",
        "sector": "Manufacturing",
        "category": "Large accelerated filer",
        "stateOfIncorporation": "CA",
        "fiscalYearEnd": "0926",
        "ein": "942404110",
        "phone": "(408) 996-1010",
        "addresses": {
          "mailing": {
            "street1": "ONE APPLE PARK WAY",
            "street2": null,
            "city": "CUPERTINO",
            "stateOrCountry": "CA",
            "zipCode": "95014",
            "stateOrCountryDescription": "CA",
            "isForeignLocation": 0,
            "foreignStateTerritory": null,
            "country": null,
            "countryCode": null
          },
          "business": {
            "street1": "ONE APPLE PARK WAY",
            "street2": null,
            "city": "CUPERTINO",
            "stateOrCountry": "CA",
            "zipCode": "95014",
            "stateOrCountryDescription": "CA",
            "isForeignLocation": null,
            "foreignStateTerritory": null,
            "country": null,
            "countryCode": null
          }
        },
        "formerNames": [
          {
            "name": "APPLE INC",
            "from": "2007-01-10T05:00:00.000Z",
            "to": "2019-08-05T04:00:00.000Z"
          },
          {
            "name": "APPLE COMPUTER INC",
            "from": "1994-01-26T05:00:00.000Z",
            "to": "2007-01-04T05:00:00.000Z"
          },
          {
            "name": "APPLE COMPUTER INC/ FA",
            "from": "1997-07-28T04:00:00.000Z",
            "to": "1997-07-28T04:00:00.000Z"
          }
        ]
      }
    ]
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`count`	number	`1`	Number of companies returned
`companies`	array[1]
`ticker`	string	`"AAPL"`	Stock ticker symbol for the company
`cik`	string	`"0000320193"`	SEC Central Index Key identifier number
`name`	string	`"Apple Inc."`	Legal company name registered with SEC
`tickers`	array	`[AAPL]`	All ticker symbols associated with company
`exchanges`	array	`[Nasdaq]`	Stock exchanges where company trades
`entityType`	string	`"operating"`	Company entity type classification
`sic`	string	`"3571"`	Standard Industrial Classification code
`sicDescription`Premium	string	`"Electronic Computers"`	Human-readable SIC code description
`sector`Premium	string	`"Manufacturing"`	High-level industry sector classification
`category`	string	`"Large accelerated filer"`	SEC filer category designation
`stateOfIncorporation`	string	`"CA"`	State where company is incorporated
`fiscalYearEnd`	string	`"0926"`	Fiscal year end month and day
`ein`	string	`"942404110"`	Employer Identification Number for tax purposes
`phone`	string	`"(408) 996-1010"`	Primary phone number from SEC filings
`addresses`	object	`{...}`
`mailing`	object	`{...}`
`street1`	string	`"ONE APPLE PARK WAY"`	Mailing address street line
`street2`	object	`null`	Mailing address second street line (suite, floor, etc.), null when not applicable
`city`	string	`"CUPERTINO"`	Mailing address city name
`stateOrCountry`	string	`"CA"`	Mailing address state or country code
`zipCode`	string	`"95014"`	Mailing address postal code
`stateOrCountryDescription`	string	`"CA"`	Human-readable name of the mailing address state or country
`isForeignLocation`	number	`0`	Whether the mailing address is outside the United States
`foreignStateTerritory`	object	`null`	Foreign state or territory name for the mailing address, null for US addresses
`country`	object	`null`	Mailing address country name, null for US addresses
`countryCode`	object	`null`	Mailing address ISO country code, null for US addresses
`business`	object	`{...}`
`street1`	string	`"ONE APPLE PARK WAY"`	Business address street line
`street2`	object	`null`	Business address second street line (suite, floor, etc.), null when not applicable
`city`	string	`"CUPERTINO"`	Business address city name
`stateOrCountry`	string	`"CA"`	Business address state or country code
`zipCode`	string	`"95014"`	Business address postal code
`stateOrCountryDescription`	string	`"CA"`	Human-readable name of the business address state or country
`isForeignLocation`	object	`null`	Whether the business address is outside the United States
`foreignStateTerritory`	object	`null`	Foreign state or territory name for the business address, null for US addresses
`country`	object	`null`	Business address country name, null for US addresses
`countryCode`	object	`null`	Business address ISO country code, null for US addresses
`formerNames`Premium	array[3]		List of all previously used company names
`name`Premium	string	`"APPLE INC"`	A previously used legal name for the company
`from`Premium	string	`"2007-01-10T05:00:00.000Z"`	ISO 8601 timestamp when the company began using this former name
`to`Premium	string	`"2019-08-05T04:00:00.000Z"`	ISO 8601 timestamp when the company stopped using this former name

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted	A key restriction or IP allow-list; see key scoping.
`429`	Rate limited, or out of credits	Read `error` to tell them apart; see rate limits.

Other ways to use Company Lookup

Set up Company Lookup on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.VerveKit →Reference →

Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →

Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →

Company Lookup