GET

/filing/{accession}

1 cr

A single SEC Form 4 filing: the reporting insider, issuer, and every transaction in it (non-derivative + derivative) with net open-market flow and a link to the original SEC document. The full-filing follow-up when another endpoint hands you an accession_number.

Request#

bash

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/filing/0001943929-26-000010"

Parameters#

Parameter	In	Type	Description
`accession`req	path	string	SEC accession, e.g. 0001943929-26-000010

Example response#

json

{
  "data": {
    "accession_number": "0001943929-26-000010",
    "insider": "Cook Timothy D",
    "issuer": { "ticker": "AAPL", "name": "APPLE INC" },
    "transactions": [
      { "code": "S", "shares": "511000", "price": 224.51, "transaction_date": "2026-06-03" }
    ],
    "net_open_market_usd": -114724610,
    "source_url": "https://www.sec.gov/Archives/edgar/data/..."
  }
}

MCP equivalent: insider.filing. The full agent surface lives on the MCP server.

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