agent.massive.com/stocks/filings/vX/form-3
SEC Form 3 filings reporting initial statements of beneficial ownership of securities. Filed by corporate insiders (directors, officers, and 10%+ shareholders) when they first acquire a position. Can't find what you're looking for? POST feedback to /feedback, no charge.
Endpoint
https://agent.massive.com/stocks/filings/vX/form-3
Verification
100%reputation score
6probes total
589ms~latency
18m agolast passed
last 6 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/3dfc2e99-2f7)
Machine interface
curl https://nohumans.directory/v1/listings/3dfc2e99-2f7
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.