SEC Form 144 Tracker — Insider Pre-Sale Notices + Form 4

Form 144 is the insider's heads-up that a sale is coming — and this tracker captures every one of them on SEC EDGAR, then tells you whether the sale actually happened. For each Notice of Proposed Sale of Restricted Securities it returns the filer, relationship, shares to sell, intended dollar value, broker, and intended sale date — plus a subsequent-Form-4 check that confirms whether the insider followed through. Filter by ticker, minimum value, and look-back window to surface only the meaningful pre-sale signals.

Why the Form 4 follow-through matters

Form 144 is the notice of INTENT to sell (filed when placing the order); Form 4 is the disclosure of the EXECUTED sale (filed within 2 business days). Not every Form 144 results in a Form 4 — sometimes the intended sale is cancelled, delayed, or never executed. The subsequent_form_4_filed flag (60-day look-ahead against the issuer's submissions feed) closes the loop, separating noticed-but-not-executed plans from real sales. That linkage is a genuinely rare capability competitors don't offer.

What you get

• Every Form 144 filing on EDGAR in a customisable look-back window (default 30 days, max 365)
• Filer identity + relationship — officer / director / 10%-owner / affiliate, straight from the filing
• Pre-trade economics — shares to sell, intended sale value (USD), shares outstanding, implied percent of float
• Intended sale date — the registrant's own approxSaleDate, parsed to ISO
• Broker + exchange — the executing broker and whether the sale is market or private
• Subsequent Form 4 boolean + date + accession — auto-joined against data.sec.gov submissions to detect execution
• Acquisition origin — when/how the restricted shares were acquired and payment nature
• Issuer enrichment — name, CIK, ticker, exchange, SIC, business/incorporation state
• Source URL on every row — the actual primary_doc.xml link plus the filing index folder

Direct from SEC EDGAR. No editorial layer, no curation, no proprietary scoring.

Use cases

• Anticipate selling pressure — see insider sales days before they hit the tape.
• Intent vs execution — distinguish noticed-but-not-executed plans from real sales via the Form 4 follow-through flag.
• Compliance / IR monitoring — track affiliate sales under Rule 144 at watched issuers.
• Supply-overhang sizing — size the overhang from large proposed sales (% of shares outstanding).
• Research datasets — pair intent (144) with execution (4) for sale-completion studies.

Sample input

{
  "ticker_filter": "",
  "min_intended_value": 1000000,
  "days_back": 30,
  "max_filings": 100
}

Targeted ticker watch

{
  "ticker_filter": "RKLB",
  "min_intended_value": 0,
  "days_back": 90,
  "max_filings": 200
}

Sample output

One row per Form 144:

{
  "form_type": "144",
  "company": "NETSCOUT SYSTEMS INC",
  "cik": "1078075",
  "ticker": "NTCT",
  "exchange": "Nasdaq",
  "sic": "7372",
  "sic_description": "Services-Prepackaged Software",
  "biz_state": "MA",
  "inc_state": "DE",
  "biz_location": "Westford, MA",
  "sec_file_number": "001-33147",
  "accession_number": "0002090999-26-000005",
  "filer_cik": "2090999",
  "filer_name": "Anil K. Singhal",
  "filer_relationship": "Officer; Director",
  "filing_date": "2026-05-29",
  "intended_sale_date": "2026-06-02",
  "shares_to_sell": 50000,
  "intended_sale_value_usd": 1245000.00,
  "shares_outstanding": 71500000,
  "percent_of_shares_outstanding": 0.0699,
  "security_class": "Common Stock",
  "broker": "Morgan Stanley Smith Barney LLC",
  "securities_exchange_name": "NASDAQ",
  "market_or_private": "NASDAQ",
  "acquired_date": "2018-08-15",
  "nature_of_acquisition": "Stock Option Exercise",
  "is_gift_transaction": false,
  "nature_of_payment": "Cash",
  "signature": "Anil K. Singhal",
  "notice_date": "2026-05-29",
  "subsequent_form_4_filed": true,
  "subsequent_form_4_date": "2026-05-30",
  "subsequent_form_4_accession": "0001127602-26-019847",
  "filing_url": "https://www.sec.gov/Archives/edgar/data/2090999/000209099926000005/primary_doc.xml",
  "filing_index_url": "https://www.sec.gov/Archives/edgar/data/2090999/000209099926000005/",
  "source": "SEC EDGAR — efts.sec.gov + data.sec.gov submissions"
}

Input parameters

Parameter	Default	Description
ticker_filter	""	Optional ticker (e.g. AAPL); blank = all issuers in the window.
min_intended_value	1000000	Minimum proposed-sale dollar value; 0 = return everything.
days_back	30	Look-back window in days (max 365).
max_filings	100	Cap on filings returned (1–2000).

How to use

Python (apify-client)

from apify_client import ApifyClient

client = ApifyClient("YOUR_APIFY_TOKEN")
run = client.actor("nexgendata/sec-form-144-restricted-stock-sales-tracker").call(run_input={
    "ticker_filter": "",
    "min_intended_value": 1000000,
    "days_back": 30,
    "max_filings": 100,
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item["company"], item["filer_name"], item["intended_sale_value_usd"], item["subsequent_form_4_filed"])

cURL

curl -X POST "https://api.apify.com/v2/acts/nexgendata~sec-form-144-restricted-stock-sales-tracker/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"ticker_filter":"","min_intended_value":1000000,"days_back":30,"max_filings":100}'

FAQ

Q: What is SEC Form 144?

A: The Notice of Proposed Sale of restricted/control securities under Rule 144, filed by affiliates intending to sell.

Q: Does a Form 144 mean the insider sold?

A: Not necessarily — it's a notice (valid ~90 days). This tracker's subsequent_form_4_filed flag tells you if the sale was actually executed.

Q: How do I track planned insider sales?

A: Run this on a watchlist; it returns proposed sales with shares, intended value, and intended date.

Q: What's the difference between Form 144 and Form 4?

A: 144 = intent to sell (before); Form 4 = the executed transaction (after). This actor links the two.

Q: Where does Form 144 data come from?

A: SEC EDGAR full-text search plus each filing's primary XML; no third-party feed.

Legal & data-source notes

• Public records only. Form 144 is filed under SEC Rule 144 and published for programmatic access via EDGAR, as is the data.sec.gov submissions API.
• Polite SEC client with a compliant User-Agent per the SEC fair-access policy, throttled well under EDGAR's rate cap.
• Subsequent Form 4 detection matches at the issuer level against the submissions feed; because the feed lags 1–2 days, a very recent Form 4 may briefly read false — re-run the next day to confirm.
• Coverage horizon is mid-2023 onward, when electronic Form 144 filing became mandatory.
• NexGenData is not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission.

Related actors

• SEC Form 4 Insider Trading Scraper
• SEC Form 4 Insider Tracker
• SEC Form 4 Insider Monitor
• Insider Cluster Buy Detector
• SEC Form 3 New Insider Tracker

Browse the full catalog of 200+ buyer-intent actors at https://apify.com/nexgendata?fpr=2ayu9b.