AI on every filing · Conviction scores · Insider track records
Every insider buy,
with a thesis attached.
Other tools dump SEC Form 4 data. Form 4 Insider reads it for you — every insider buy or sell gets a structured AI thesis with conviction score, key factors, and risks. Decide in 30 seconds whether a trade matters.
The signal is in the noise.
On any given day, 200 to 600 SEC Form 4 filings hit EDGAR. The vast majority are noise — automatic option grants, mechanical 10b5-1 sales, performance vesting. Reading them in raw XML is impossible.
The handful of filings that actually carry information — a CEO's first open-market buy in three years, a cluster of officers loading up the same week, a CFO doubling their personal stake into bad earnings — are buried in the rest. Free tools dump the data; institutional terminals charge $24,000 a year to interpret it.
Form 4 Insider closes that gap. Every filing gets an AI-generated thesis grounded in the insider's track record, the trade's size, and the surrounding context — calibrated to call out a 90-conviction cluster buy and stay quiet on a 35-conviction noise filing.
Live, right now
The five most recent filings the engine has scored. Same data the paid feed sees — paywalled thesis snippets here as a teaser.
- May 3, 2026·Buy·$1K
F4SYNTH — Form4 Synthetic Sentinel Inc.
Synthetic Sentinel · Synthetic Officer
A single officer at Form4 Synthetic Sentinel Inc. (F4SYNTH) filed an open-market purchase of 100 shares at $10.00/share on 2026-05-03, for a total outlay of $1,000. While the transaction code (P) is directionally the most bullish signal ava…
12conviction - May 3, 2026·Buy·$1K
F4SYNTH — Form4 Synthetic Sentinel Inc.
Synthetic Sentinel · Synthetic Officer
A single officer at Form4 Synthetic Sentinel Inc. (F4SYNTH) filed a non-derivative open-market purchase of 100 shares at $10.00/share on 2026-05-03, representing a total outlay of $1,000. While the transaction code (P) is directionally the …
8conviction - May 3, 2026·Buy·$1K
F4SYNTH — Form4 Synthetic Sentinel Inc.
Synthetic Sentinel · Synthetic Officer
Synthetic Sentinel, a Synthetic Officer at Form4 Synthetic Sentinel Inc. (F4SYNTH), filed a Form 4 on 2026-05-03 disclosing a single open-market purchase of 100 shares at $10.00/share for a total outlay of $1,000. While the transaction code…
8conviction - May 3, 2026·Buy·$1K
F4SYNTH — Form4 Synthetic Sentinel Inc.
Synthetic Sentinel · Synthetic Officer
Synthetic Sentinel, a Synthetic Officer at Form4 Synthetic Sentinel Inc. (F4SYNTH), filed a single open-market purchase of 100 shares at $10.00/share on 2026-05-03, representing a total outlay of $1,000. While the transaction code (P) is th…
8conviction - May 3, 2026·Buy·$1K
F4SYNTH — Form4 Synthetic Sentinel Inc.
Synthetic Sentinel · Synthetic Officer
Synthetic Sentinel, a Synthetic Officer at Form4 Synthetic Sentinel Inc. (F4SYNTH), filed a Form 4 on 2026-05-03 disclosing a single open-market purchase of 100 shares at $10.00/share for a total outlay of $1,000. While the transaction code…
8conviction
What you get that other tools don't have.
AI thesis on every filing
Not raw data — a structured, calibrated paragraph per filing covering size, role, context, and historical edge. Sonnet 4.6 by default; Opus 4.7 on flagged buys for Premium subscribers.
Insider track records
Every insider's 90d / 1y / 3y forward edge vs SPY computed from their own historical buys. A CEO who has beaten the market 3 of last 4 personal trades is a different signal than a board member's first-ever buy.
Cluster-buy detection
Three or more insiders buying the same ticker in a 7-day window is the highest-signal pattern in academic literature. We detect it, score it, and ping you on SMS the moment the third filing lands.
Conviction-thresholded alerts
Watch a ticker, set a conviction floor (e.g. 70+), and get email alerts only when a filing on that ticker actually clears your bar. No 4 a.m. pings on automatic option grants.
Vs the rest of the field.
We compare honestly. Free tools are great for raw data; expensive terminals are great if you have $24k. We win on the interpretation layer at a price retail can absorb.
| Feature | Form 4 Insider | Open Insider | Quiver | WhaleWisdom | Bloomberg |
|---|---|---|---|---|---|
| Real-time Form 4 feed | ✓ | ✓ | ✓ | ✓ | ✓ |
| AI thesis on every filing | ✓ | — | — | — | — |
| Conviction score (0–100) | ✓ | — | — | — | — |
| Per-insider track record vs SPY | ✓ | — | Partial | Partial | ✓ |
| Cluster-buy detection | ✓ | — | — | — | Manual |
| Conviction-thresholded SMS alerts | ✓ | — | — | — | — |
| Price | $15/mo | Free | $10–30/mo | $45+/mo | $24k/yr |
Comparisons reflect public-tier feature sets as of early 2026 to the best of our knowledge. We're not affiliated with any of the listed services.
How it works.
End-to-end, EDGAR to your inbox in under 60 seconds.
EDGAR drops a Form 4
Our poller hits SEC EDGAR every 120 seconds and queues every new Form 4 / 4-A within 30 seconds of publication.
Worker parses the XML
Pull every transaction line: open-market buys, sells, option grants, gifts, 10b5-1 sales. Tag direction, size, ownership delta.
AI writes the thesis
Sonnet 4.6 (Opus 4.7 for high-conviction setups) generates a calibrated paragraph: size in context, insider's historical edge, key factors, risks.
Score, route, alert
Conviction score on the 0–100 distribution. Cluster detector fires if ≥3 insiders pile into the same ticker in 7 days. Subscribers on watchlist get pinged.
Pricing.
Free tier is a real product, not a teaser. Upgrade when the alerts pay for themselves.
Free
Browse the last 30 days of insider filings. Weekly digest by email.
- ✓Last 30 days of filings (list view)
- ✓Conviction score badge on each filing
- ✓Insider profiles & edge scores
- ✓Weekly Top-5 email digest
Pro
AI thesis on every filing + watchlist email alerts.
- ✓Full AI thesis on every Form 4 (Sonnet 4.6)
- ✓Full filing history (no 30-day cap)
- ✓Unlimited ticker watchlists
- ✓Conviction-thresholded email alerts
- ✓Historical insider edge scores
Premium
Opus 4.7 deep theses + SMS alerts + cluster-buy detection.
- ✓Everything in Pro
- ✓Opus-grade thesis on flagged buys
- ✓SMS alerts for highest-conviction filings
- ✓Cluster-buy alerts (≥3 insiders, same ticker, 7d)
- ✓Watchlist by insider CIK + min trade size
Common questions.
Aren't Form 4 filings public anyway?+
Yes — that's the point. The data is free; reading 200–600 of them per day in raw XML is impossible. We're paying for the interpretation layer, not the data.
How accurate are the AI theses?+
The thesis paragraph is grounded in four hard inputs: trade size, insider role, the insider's own historical edge vs SPY, and surrounding filings (cluster detection). The model is calibrated to underplay low-information filings — a 35-conviction grant disclosure gets a flat write-up, not a bullish narrative.
What's a 'good' conviction score?+
On our distribution, 70+ is the threshold for the daily auto-publish queue. 80+ means a clean single-officer buy with at least one supporting feature. 90+ is rare — typically a senior cluster buy by officers with positive historical edge into a beaten-down stock.
Is this investment advice?+
No. This is journalism — pattern-recognition over public regulatory filings. Every page carries a 'not investment advice' line. Past insider performance doesn't guarantee anything; insider-buy backtests are notoriously path-dependent.
Free tier limits?+
Last 30 days of filings (list view), conviction-score badges, the weekly Top-5 digest by email, and the public insider/issuer pages. The AI thesis paragraph itself is gated to Pro.
Can I cancel anytime?+
Yes. Stripe-managed billing, one-click cancel from /dashboard/billing. Subscription stays active through the end of the period you've paid for.
Stop guessing whether an insider buy matters.
The free tier is real. Browse, read the conviction badges, see whether the calls feel right. Upgrade only when the alerts have already saved you a trade.