NexusForm4

A live API that turns SEC Form 4 insider trading filings into structured, queryable signals for public market research.

What we worked on

API Development · Data Infrastructure · Backend Systems

Background

Insider trading disclosures are public record but locked in a format that's slow to parse and hard to act on. We built a pipeline that ingests, structures, and serves this data as a clean, developer-ready API.

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Challenges

Reliable ingestion at scale — filings needed to be pulled, parsed, and backfilled continuously without gaps, then served with the uptime a paid API demands.

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Outcome

A production API live on RapidAPI with tens of thousands of trade records ingested and a full historical backfill, now serving paying subscribers researching insider activity across US public markets.

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