Insider Selling Signals
Insider selling is useful only after filtering out noise. InsiderAlpha separates voluntary Code S sales from tax withholding, grants, option exercises, and plan-based liquidity to show where real selling pressure is concentrated.
- Measures
- Open-market sales
- Strong pattern
- Large discretionary sale that meaningfully reduces ownership
- Weak pattern
- 10b5-1 sale, tax withholding, or small diversification trade
Live Insider Selling Board
Revalidates hourlyNVIDIA CORP
Top insider: STEVENS MARK A
$314.6M
-$314.6M
AVAGO TECHNOLOGIES LTD
Top insider: SAMUELI HENRY
$250.0M
-$250.0M
DELL INC
Top insider: Silver Lake Partners IV, L.P.
$242.2M
-$242.2M
APPLE INC
Top insider: COOK TIMOTHY D
$91.0M
-$91.0M
SANDISK CORP
Top insider: Goeckeler David
$54.3M
-$54.3M
MICRON TECHNOLOGY INC
Top insider: RAY MICHAEL CHARLES
$5.9M
-$5.9M
MICROSOFT CORP
Top insider: Hood Amy
$4.0M
-$4.0M
QUALCOMM INC
Top insider: AMON CRISTIANO R
$4.0M
-$4.0M
ORACLE CORP
Top insider: Sicilia Michael D.
$3.8M
-$335K
MARVELL TECHNOLOGY GROU
Top insider: Koopmans Chris
$2.9M
-$2.9M
AMAZON COM INC
Top insider: Herrington Douglas J
$251.5K
-$252K
GOOGL
Top insider: ARNOLD FRANCES
$28.3K
-$28K
How to read the signal
- Start with the Form 4 transaction code, then separate voluntary trades from compensation mechanics.
- Compare buy volume against sell volume to determine whether capital is entering or leaving the stock.
- Weight executive rank, transaction size, active insider count, and remaining ownership before drawing conclusions.
- Use footnotes to identify 10b5-1 plans, tax withholding, gifts, trusts, or non-market transfers.
Related concepts
Insider Selling Signals — Frequently Asked Questions
>Is insider selling bearish?
Not always. Planned 10b5-1 sales, tax withholding, and small diversification sales are weaker signals than large discretionary open-market sales.
>What Form 4 code means insider selling?
Code S usually identifies an open-market sale. Analysts should still read footnotes to check whether the sale was planned under Rule 10b5-1.
>What makes an insider selling signal strong?
The signal is stronger when a senior executive sells a large percentage of remaining ownership, when multiple executives sell, and when selling exceeds buying volume.