SEC filings, distilled into structured events.

Tributary watches the EDGAR current-events feed and pulls every 8-K (plus NT-10K, NT-10Q, and Form 4) for a curated universe of tickers. For each filing it extracts the disclosed Items — 1.03 bankruptcy, 4.02 restatements, 5.02 officer departures, 2.05 restructurings, 7.01 disclosures — and assigns a salience and materiality grade per item. The output is a JSON event stream, not a news feed.

The hard part is not fetching filings; it's deciding which Item is signal. A 9.01 cover-page exhibit is boilerplate. A 4.02 restatement is a position-killer. The same Item number can be either depending on what the filing actually says. Tributary classifies at the item level — what was disclosed, what's implied, what's structured enough to act on — and emits one brief per material filing into Stalker.

A nightly risk-gate pass also writes flags into Stalker for late filings (NT-10K, NT-10Q), restatements, auditor changes, and bankruptcy disclosures, so the screener can suppress positions in flagged tickers before the next trading session opens.

Sister project to Headwater (your private newsletter digest) and Estuary (cross-source consensus from a curated public corpus). Same pipeline shape, different question. Headwater synthesizes opinion. Estuary attributes opinion. Tributary surfaces fact.

Currently in private use. If you'd like to talk, write to hello@tributary.one.