`sec_13d_search`

Pack: sec-beneficial-ownership · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/sec_13d_search for the schema, then POST the same URL with its arguments for the data.

Search new Schedule 13D/13G filings across all issuers by date: subject company, filers, % held, purpose.

Tool description as the model sees it

MARKET-WIDE search of Schedule 13D / 13G beneficial-ownership filings by FILING DATE — no ticker needed. AUTHORITATIVE for “which activist investors filed new 13Ds this month and which companies did they target”, “who disclosed a 5%+ stake in anything last week”, “new 13G filings since Monday”. Returns, per filing: the SUBJECT company (the issuer targeted, with ticker and CIK), the FILERS (investors / reporting persons, with CIK), form, filing date, and whether it is an amendment. By default only NEW filings (amendments excluded; set include_amendments true to add 13D/A and 13G/A). For the first enrich structured filings (post-2024 XML rule, default 5, max 10) it also reads the filing itself and adds the reporting owners’ percent of class and shares owned, the event date, and — for 13D — the Item 4 “Purpose of Transaction” text (the activist signal). Rows beyond enrich carry the index fields only; pass their accession to sec_13d_filing for the full parse. total_matches is the true count for the window, scanned how many were read (at most 300), and truncated says honestly when the window held more than was scanned — narrow the date range rather than assuming completeness. Default window: the last 30 days.

Parameters

Name	Type	Required	Description
`form_family`	string	no	”13D” (default; active / activist stakes), “13G” (passive 5%+ holders) or “all”.
`start_date`	string	no	First filing date, YYYY-MM-DD. Default: 30 days before end_date.
`end_date`	string	no	Last filing date, YYYY-MM-DD. Default: today.
`include_amendments`	boolean	no	Include 13D/A and 13G/A amendments. Default false (new filings only).
`limit`	number	no	Max filings to return (1-100, default 25), newest first.
`enrich`	number	no	How many of the returned structured filings to read in full for percent of class and Item 4 purpose (0-10, default 5). Each is one SEC document fetch.

Example call

Arguments

{
  "form_family": "13D",
  "start_date": "2026-10-01",
  "end_date": "2026-10-22",
  "limit": 5,
  "enrich": 2
}

curl

curl -X POST https://gateway.pipeworx.io/sec-beneficial-ownership/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"sec_13d_search","arguments":{"form_family":"13D","start_date":"2026-10-01","end_date":"2026-10-22","limit":5,"enrich":2}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('sec_13d_search', {
  "form_family": "13D",
  "start_date": "2026-10-01",
  "end_date": "2026-10-22",
  "limit": 5,
  "enrich": 2
});

Response shape

Field	Type	Description
`form_family`	string
`date_range`	object
`include_amendments`	boolean
`total_matches`	number
`scanned`	number
`matched_after_filter`	number
`truncated`	boolean
`returned`	number
`results`	array
`note`	string \| null
`source`	string
`data_as_of`	string

Full JSON Schema

{
  "type": "object",
  "additionalProperties": true,
  "properties": {
    "form_family": {
      "type": "string"
    },
    "date_range": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "start": {
          "type": "string"
        },
        "end": {
          "type": "string"
        }
      }
    },
    "include_amendments": {
      "type": "boolean"
    },
    "total_matches": {
      "type": "number"
    },
    "scanned": {
      "type": "number"
    },
    "matched_after_filter": {
      "type": "number"
    },
    "truncated": {
      "type": "boolean"
    },
    "returned": {
      "type": "number"
    },
    "results": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true,
        "properties": {
          "accession_number": {
            "type": "string"
          },
          "form": {
            "type": "string"
          },
          "is_amendment": {
            "type": "boolean"
          },
          "filing_date": {
            "type": "string"
          },
          "subject_company": {
            "type": "object",
            "additionalProperties": true,
            "properties": {
              "name": {
                "type": "string"
              },
              "ticker": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "cik": {
                "type": "string"
              }
            }
          },
          "filers": {
            "type": "array",
            "items": {
              "type": "object",
              "additionalProperties": true,
              "properties": {
                "name": {
                  "type": "string"
                },
                "ticker": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "cik": {
                  "type": "string"
                }
              }
            }
          },
          "subject_basis": {
            "type": "string"
          },
          "structured": {
            "type": "boolean"
          },
          "detail": {
            "type": [
              "object",
              "null"
            ],
            "additionalProperties": true
          },
          "filing_index_url": {
            "type": "string"
          }
        }
      }
    },
    "note": {
      "type": [
        "string",
        "null"
      ]
    },
    "source": {
      "type": "string"
    },
    "data_as_of": {
      "type": "string"
    }
  }
}

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the sec-beneficial-ownership pack

{
  "mcpServers": {
    "sec-beneficial-ownership": {
      "url": "https://gateway.pipeworx.io/sec-beneficial-ownership/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

sec_13d_search