SEC insider transactions API (Forms 3, 4 and 5)

What is in it

• ·A cross-filing transaction stream, filterable by issuer, reporting owner, transaction code, and date
• ·Reporting-owner profiles and biographies, so you can follow a person across every company they file at
• ·Per-filing detail with all reporting owners, holdings, and transactions
• ·A derived buy/sell ratio endpoint, so you do not have to compute it yourself

Endpoints

7 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/insiders?limit=10" \
  -H "apikey: $THREESPREAD_API_KEY"

from py3spread import Client

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

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

What people build with it

• ·Screen for clusters of insider buying before earnings
• ·Track a single executive or director across every issuer they report at
• ·Backtest insider activity as a signal, with the full history rather than a sample

Guides using this dataset

• Build an insider trading screener in Python

  Pull every Form 4 insider transaction for a ticker, measure buy/sell sentiment, and rank the largest trades. About 30 lines of Python against a free API key.

The other datasets

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