Free until September 1. After that, it's paid — because I want you to see the track record first.
InsideStox scans every SEC Form 4 filing daily and flags the rare cases where a high-level executive suddenly puts serious money into their own stock — when that's not normal behavior for them.
Congress has 45 days to tell you. Executives have 2.
Trackers that follow congressional trading — Nancy Pelosi, other members of Congress — are working with a stale signal by design. Under the STOCK Act, lawmakers have up to 45 days to disclose a trade. By the time it's public, the stock has often already made its move.
Corporate insiders operate under a much tighter clock. SEC rules require an officer or director to report an open-market purchase of their own company's stock within 2 business days — no grace period, no exceptions. InsideStox scans those filings every day, so a signal usually reaches you within a day or two of the actual trade, not a month and a half later.
Same underlying idea — someone with real information putting real money behind it — but only one version of that signal is still actionable by the time you see it.
Most insider-buying trackers are noise
A 10b5-1 sale gets mislabeled as a buy. An RSU grant gets counted as conviction. A hedge fund quietly accumulating a stake gets treated the same as a CEO writing a personal check.
InsideStox filters all of that out and keeps only the signals that matter: first-time buyers, buys that are dramatically larger than a person's own history, and cluster buys where multiple executives move together. Every entry shows the filing date, the price paid, and the price today — so you can see for yourself whether the signal held up.
It's free through September 1, 2026 — create an account and every live signal is unlocked. After that, access requires a subscription, so if you want to see exactly what it's calling before you'd have to pay for it, now's the time.
The signals we hunt
First-time buyers
An executive who has never bought a share on the open market suddenly writes a six- or seven-figure personal check. Behavioral reversals like this are among the strongest insider signals on record.
Cluster buys
Three insiders at the same company buying in the same window rarely happens by coincidence. When the CFO and General Counsel join in, the signal quality multiplies.
Conviction size
We ignore token purchases and 10b5-1 plan noise. Every signal is a real open-market buy of $50K or more — scored higher when it's a step-up from the insider's usual behavior.
From filing to signal in three steps
Scan
Every trading day we pull the freshest Form 4 filings from SEC EDGAR — the legally required disclosure insiders file within two business days of a trade.
Filter & score
Sales, option exercises, grants, and fund accumulation are stripped out. What survives is scored 0–100 on size, rarity, cluster breadth, and whether the move has already been priced in.
Track
Each signal is tracked daily against the insider's buy price — wins and losses alike stay public on the scoreboard. Signals retire to the archive after 30 days and age out after 90.
The scan runs six days a week. See what it found.
Free through September 1, 2026 — no card, nothing to cancel. After that it's $9.99/month or $99/year.