Form 4インサイダー買いアラート
Form 4インサイダー買いアラート：リアルタイム・クラスタ買いレーダー
Form 4でスマートマネーを追跡。ノイズを除外し、EDGAR到着時に公開市場のクラスタ買いを強調します。
Signal vs noise
| Transaction | Code | Interpretive weight |
|---|---|---|
| Open-market buy | P | High — cash at risk |
| Open-market sell | S | Context-dependent |
| Option/RSU exercise | M / A | Often low (compensation) |
| Gift / transfer | G | Usually non-informative |
Cluster buys
Multiple insiders buying in a short window — especially officers/directors with no concurrent ATM/convertible noise — can mark informed accumulation. Stock Catalyst AI’s Insider Transaction Radar prioritizes open-market clusters and suppresses exercise noise.
Combining Form 4 with 8-K context
A cluster buy into a non-dilutive 8-K is a different setup than buying ahead of a known ATM. Always cross-check recent 8-K Items 3.02 / financing exhibits.
Live examples from our archive
Recent high-impact signals matching this guide — delayed public archive (live stream is VIP-only):
- $ROL · AI +6.5/10 · 2026-11-02 — Rollins Insider Buying: 10% Owner LOR Inc Acquires ~$50M in Common Stock
- $ROL · AI +6.8/10 · 2026-11-02 — Rollins 10% Owner Purchases $50M in Common Stock
- $BBTX · AI +6.8/10 · 2026-11-02 — Bambusa Therapeutics Insider Purchases 375k Shares for $6.0M
- $BBTX · AI +6.5/10 · 2026-11-02 — Bambusa Therapeutics: 10% Owner Salvia Purchases $6M in Common Stock
- $ASPE · AI +6.5/10 · 2026-11-02 — Aspen Neuroscience Insider ARCH Venture Purchases $20M in Stock
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