`sec_13d_amendment_diff`

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_amendment_diff for the schema, then POST the same URL with its arguments for the data.

Diff a 13D/A or 13G/A amendment against the same reporting group’s prior filing.

Tool description as the model sees it

Given one 13D/A or 13G/A amendment (issuer + accession_number), find the SAME reporting group’s prior filing in the chain and diff what changed: percent of class, aggregate shares owned, sole/shared voting & dispositive power (per reporting owner, matched by CIK or name), and — for 13D — whether the Item 4 purpose text changed. Walks back through the issuer’s filing history (bounded, never a bulk crawl) matching on reporting-owner identity, since EDGAR does not carry an explicit “previous accession” link for this form family. Reports prior_filing_found: false honestly if no matching prior filing turns up within the scan bound, or if the chain predates the structured-XML rule (diffing free text is not meaningful).

Parameters

Name	Type	Required	Description
`ticker_or_cik`	string	no	Ticker, company name, or CIK of the ISSUER.
`ticker`	string	no	Alias for ticker_or_cik.
`cik`	string	no	Alias for ticker_or_cik.
`accession_number`	string	yes	Accession number of the AMENDMENT (13D/A or 13G/A) to diff against its predecessor. Also accepts an original 13D/13G, in which case there is by definition no prior filing.

Example call

Arguments

{
  "ticker_or_cik": "IMXI",
  "accession_number": "0000921895-25-002808"
}

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_amendment_diff","arguments":{"ticker_or_cik":"IMXI","accession_number":"0000921895-25-002808"}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('sec_13d_amendment_diff', {
  "ticker_or_cik": "IMXI",
  "accession_number": "0000921895-25-002808"
});

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_amendment_diff