Form 144 API: notices of proposed insider sales as JSON

Form 144 notices of proposed sales of restricted and control securities: seller, relationship, shares, market value, broker and recent sales.

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2,556filings parsed

2026parsed since

2026-10-09latest filing

curl -H "Authorization: Bearer $SECFEED_KEY" \
  "https://secfeedapi.com/v1/form-144?fields=flat&size=2"

import os, requests

r = requests.get(
    "https://secfeedapi.com/v1/form-144",
    params={'fields': 'flat', 'size': '2'},
    headers={"Authorization": f"Bearer {os.environ['SECFEED_KEY']}"},
)
print(r.json())

Overview

Before an affiliate sells restricted or control stock under Rule 144, they file Form 144 with the planned sale. It often comes before the Form 4 that reports the actual trade, which makes it an early look at insider selling.

SecFeed parses each notice into flat fields: issuer, seller, relationship to the issuer, class, shares to sell, aggregate market value, broker, approximate sale date, how the shares were acquired, and every sale in the past three months.

What you get

Built for developers who would rather not parse EDGAR.

Flat, filterable fields

Filter on any field, for example flat.aggregateMarketValue__gte=1000000.

Past three months of sales

Each prior sale with seller, date, shares and gross proceeds.

Acquisition details

When and how the shares were acquired and from whom.

Updated every 30 minutes

New notices are parsed on each weekday ingest cycle.

Endpoints

Authenticate with Authorization: Bearer YOUR_KEY. Responses are JSON.

GET/v1/form-144Docs →

Proposed sales of restricted and control securities: flat fields (seller, relationship, shares, market value, broker, sale date, past 3 months of sales).

Parameters: cik, startDate, endDate, flat.<field>=value, fields=flat

Response fields

The main fields in every result. The raw filing data is always one level down.

Field	Meaning
`flat.issuerName, flat.issuerCik`	The company whose shares will be sold.
`flat.seller, flat.relationship`	Who is selling and their role (officer, director, 10% stockholder).
`flat.sharesToSell, flat.aggregateMarketValue`	Size of the planned sale.
`flat.broker, flat.approxSaleDate, flat.exchange`	Where and when the sale is planned.
`flat.salesPast3Months`	Recent sales with date, shares and gross proceeds.

Use cases

Early warning of large planned insider sales
Pair Form 144 notices with later Form 4 trades
Track 10b5-1 selling programs

Datasets behind this API

The SEC forms this API reads, with live filing counts.

Form 144Restricted sales

Form 144 notices of proposed sales of restricted and control securities, electronic since 2023, with seller, shares, market value and broker as JSON.

Form 4Insider trading

Every Form 4 statement of changes in beneficial ownership since 2003, parsed into transactions with insider, role, code, shares and price.

Tutorials

Ownership & fund analysisFind large Form 144 proposed insider sales

Query Form 144 notices of proposed sales of restricted and control stock by market value, with seller, relationship, broker and 10b5-1 plan dates.

FAQ

Is a Form 144 sale guaranteed to happen?

No. Form 144 is a notice of a proposed sale. The executed trade, if any, is reported on Form 4.

When is Form 144 filed?

On or before the day the sell order is placed, when the sale exceeds 5,000 shares or $50,000 in a three month period.

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