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SEC Form 144 Insider Intent-to-Sell Notices by Ticker
SEC Form 144 Insider Intent-to-Sell Notices by Ticker is a paid API for AI agents from agents.x402stock.xyz, paid per call via MPP, $0.02/call, status unknown (last checked 2026-09-10).
Returns SEC Form 144 filings (insider intent-to-sell notices) for a US-listed company, showing proposed insider sales before they are executed and reported on Form 4.
Price / call$0.02
Success—
StatusUnknown
How this service works
Insider intent-to-sell notices (SEC Form 144) for one US-listed company — the leading indicator that front-runs the Form 4. Per notice: the insider and relationship, shares to be sold, aggregate market value, approximate sale date, broker, shares outstanding, and any sales in the past 3 months. A PROPOSED sale, not an executed trade. `?limit=` max 25. From SEC EDGAR. From x402stock
Output
A JSON object containing a list of Form 144 notices for the requested ticker, each with: insider name and relationship to company, security name, number of shares proposed for sale, aggregate market value, approximate sale date, broker, shares outstanding, exchange, notice and filing dates, acquisition history for those shares, and a record of any shares sold by that insider in the prior 3 months. Also includes total count of parsed filings and source/as-of metadata.
Example use cases
Tracking executive selling signals before earnings
“Check if any insiders at Tesla have filed Form 144 intent-to-sell notices recently — I want to know who, how many shares they plan to sell, and when the sale is expected.”
Monitoring new insider sale proposals at a biotech
“Pull the last 15 Form 144 filings for MRNA from SEC EDGAR — I want to see the insiders, their relationship to the company, share amounts, market value, and any prior sales in the last 3 months.”
Screening for insider distribution ahead of a short thesis
“Get me the SEC Form 144 notices for Palantir — up to 25 — so I can see if executives or directors are lining up significant proposed share sales and which brokers they're using.”
Technical details
Endpoint
GEThttps://agents.x402stock.xyz/api/v1/form-144/{ticker}When to prefer
Use this endpoint when you need a leading indicator of insider selling activity before Form 4 (executed trade) is filed. Ideal for monitoring proposed insider dispositions, screening for unusual insider selling ahead of price moves, or building an insider activity dashboard. Prefer this over Form 4 endpoints when you want to catch planned sales before execution. Best suited for US-listed tickers on major exchanges with SEC EDGAR filing obligations.
Side effects
- Invalid or unknown ticker returns empty data or error
- Ticker not in SEC EDGAR system (e.g. OTC-only) may return no filings
- limit parameter exceeding 25 is rejected
- No recent Form 144 filings for the ticker results in empty notices array
- Unstructured filings may have null values across most fields (structured=false)
- Network or upstream SEC EDGAR unavailability causes timeout or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | |
| tickerrequired | string | US-listed ticker symbol (uppercase), e.g. AAPL. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | |
| as_ofrequired | — | |
| sourcerequired | string | |
| tickerrequired | string |
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