Form 144 proposed sales API

What is in it

• ·Form 144 filings, filterable by issuer
• ·The issuer index
• ·Per-filing detail with proposed acquisitions and the three months of prior sales

Endpoints

3 endpoints on https://api.3spread.com. Full parameters and response schemas are in the API reference.

Query it

Every dataset is available on the free Community tier. Sign up, provision a key, and query it. No credit card.

curl "https://api.3spread.com/v1/proposed-sales?limit=10" \
  -H "apikey: $THREESPREAD_API_KEY"

from py3spread import Client

client = Client()  # reads THREESPREAD_API_KEY
page = client.proposed_sales.list(limit=10)

for row in page["data"]:
    print(row)

What people build with it

• ·See intended insider selling ahead of the Form 4 that confirms it
• ·Pair Form 144 intent with Form 4 execution to measure follow-through
• ·Monitor control-person selling in a single name

The other datasets

All of them are included, free, on the same key.