FASTENAL CO (FAST) Insider Transactions API

• cURL
• Python
• JavaScript

curl "https://financialdata.net/api/v1/insider-transactions?identifier=FAST&key=API_KEY"

import requests

                                                url = 'https://financialdata.net/api/v1/insider-transactions?identifier=FAST&key=API_KEY'    
                                                response = requests.get(url)

                                                print(response.json())
                                            

const url = 'https://financialdata.net/api/v1/insider-transactions?identifier=FAST&key=API_KEY';
                                            
                                                const response = await fetch(url);
                                                const data = await response.json();

                                                console.log(data);
                                            

[
  {
    "trading_symbol": "FAST",
    "central_index_key": "0000815556",
    "registrant_name": "FASTENAL CO",
    "insider_name": "Ancius Michael J",
    "insider_central_index_key": "0001454708",
    "relationship_to_issuer": "Director",
    "is_derivatives_transaction": false,
    "title_of_security": "Common  Stock",
    "transaction_date": "2026-08-13",
    "transaction_code": "G",
    "transaction_description": "Bona fide gift",
    "amount_of_securities": 400,
    "price_per_security": 0.0,
    "acquired_or_disposed": "D",
    "title_of_underlying_security": null,
    "amount_of_underlying_securities": null,
    "securities_owned_following_transaction": 58290,
    "ownership_form": "D",
    "nature_of_indirect_ownership": null
  },
  ...
]

Federal securities laws require insiders, including officials, directors, and those holding more than 10% of a company's securities, to report their purchases, sales, and holdings. The API endpoint gives comprehensive information about each of the transactions. The data is available for a few thousand US companies. There is a limit of 50 records per API call.