Form 4 Code P / Accumulation

Insider Buying Signals

Insider buying is the cleanest bullish signal when executives use personal capital to buy shares in the open market. InsiderAlpha isolates Code P transactions, compares them against selling pressure, and ranks tickers by live buy volume.

Signal_Model
Measures
Open-market purchases
Strong pattern
CEO/CFO open-market purchase with positive net flow
Weak pattern
Small director buy or option-related activity

Live Insider Buying Board

Revalidates hourly
#01TSLA

TESLA MTRS INC

Top insider: Musk Elon

Buy Volume

$476.2M

NET

+$364.1M

6 insiders
2026.06.16
StrongAnalyze
#02MSFT

MICROSOFT CORP

Top insider: STANTON JOHN W

Buy Volume

$2.0M

NET

-$138.0M

13 insiders
2026.06.15
ModerateAnalyze
#03CRM

SALESFORCE COM INC

Top insider: Kirk David Blair

Buy Volume

$1.0M

NET

+$71K

17 insiders
2026.06.22
ModerateAnalyze
#04INTC

INTEL CORP

Top insider: GELSINGER PATRICK P

Buy Volume

$877.3K

NET

-$7.2M

9 insiders
2026.06.01
WatchAnalyze
#05CAG

CONAGRA FOODS INC

Top insider: LENNY RICHARD H

Buy Volume

$796.1K

NET

-$639K

13 insiders
2026.06.01
WatchAnalyze
#06IBM

INTL BUSINESS MACHINES

Top insider: FARR DAVID N

Buy Volume

$716.0K

NET

-$6.0M

10 insiders
2026.07.01
WatchAnalyze
#07CME

CME GROUP INC

Top insider: SHEPARD WILLIAM R

Buy Volume

$661.0K

NET

-$26.5M

30 insiders
2026.06.25
WatchAnalyze
#08AVGO

AVAGO TECHNOLOGIES LTD

Top insider: You Harry L.

Buy Volume

$373.6K

NET

-$541.7M

12 insiders
2026.06.29
WatchAnalyze
#09CLH

CLEAN HARBORS INC

Top insider: Polito Karyn

Buy Volume

$135.8K

NET

-$157.3M

21 insiders
2026.07.01
WatchAnalyze
#10ORCL

ORACLE CORP

Top insider: Fairhead Rona Alison

Buy Volume

$112.3K

NET

-$960.1M

14 insiders
2026.06.24
WatchAnalyze

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.

Insider Buying Signals — Frequently Asked Questions

>Is insider buying bullish?

Open-market insider buying is usually bullish because the insider is voluntarily putting personal capital at risk. The signal is strongest when the buyer is a senior executive and net flow is positive.

>What Form 4 code means insider buying?

Code P on Form 4 usually identifies an open-market purchase. It should be separated from option exercises, grants, and other compensation mechanics.

>What makes an insider buying signal strong?

Large dollar value, multiple active insiders, C-suite participation, and positive net capital flow all make the signal stronger.