Legal insider trading is the buying or selling of a company's stock by its own directors, officers, and 10%+ owners, openly disclosed on SEC Form 4 — distinct from illegal trading on material non-public information.
There are two very different things called "insider trading." The legal kind is routine: insiders are allowed to trade their own company's stock and simply must report it on Form 4 within two business days. The illegal kind is trading on material non-public information in breach of a duty — that is securities fraud.
Because disclosed insider trades are public and timely, they are a widely studied signal. Open-market purchases by multiple insiders ("cluster buying") have historically been the most informative subset.
Three directors each buying shares on the open market in the same week is legal, disclosed insider buying — a watched bullish signal.
Arkolith's insider stream surfaces exactly this legal, disclosed activity — the open-market P/S transactions that carry the signal.
Arkolith turns this into live, sourced data your agent can query — SEC filings, insider activity, and market data behind one key, every datapoint traceable to its origin.