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 hourlyORACLE CORP
Top insider: CATZ SAFRA
$960.2M
-$960.1M
NVIDIA CORP
Top insider: STEVENS MARK A
$580.2M
-$580.2M
AVAGO TECHNOLOGIES LTD
Top insider: SAMUELI HENRY
$542.1M
-$541.7M
APPLE INC
Top insider: LEVINSON ARTHUR D
$420.3M
-$420.3M
NETFLIX INC
Top insider: HASTINGS REED
$221.3M
-$221.3M
ADVANCED MICRO DEVICES
Top insider: Papermaster Mark D
$185.5M
-$185.5M
GENERAL MTRS CO
Top insider: Barra Mary T
$177.1M
-$177.1M
VISA INC
Top insider: Fabara Paul D
$169.7M
-$169.7M
CLEAN HARBORS INC
Top insider: MCKIM ALAN S
$157.4M
-$157.3M
MICROSOFT CORP
Top insider: Nadella Satya
$140.0M
-$138.0M
TESLA MTRS INC
Top insider: Musk Kimbal
$112.1M
+$364.1M
MICRON TECHNOLOGY INC
Top insider: MEHROTRA SANJAY
$89.1M
-$89.1M
CORNING INC
Top insider: WEEKS WENDELL P
$84.5M
-$84.5M
DELL INC
Top insider: DORMAN DAVID W
$76.5M
-$76.5M
AMAZON COM INC
Top insider: Jassy Andrew R
$65.4M
-$65.4M
MARVELL TECHNOLOGY GROU
Top insider: Bharathi Sandeep
$38.3M
-$38.3M
SMCI
Top insider: Liu Liang Chiu-Chu Sara
$31.4M
-$31.4M
BANK OF AMERICA CORP
Top insider: Athanasia Dean C
$31.1M
-$31.1M
CME GROUP INC
Top insider: DUFFY TERRENCE A
$27.1M
-$26.5M
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.