Insider trading, decoded
Who is buying and who is selling their own company, straight from Forms 4 filed with the SEC. Open-market trades only: grants, vestings and tax withholding are decoded out, because counting them as selling is how headlines get it wrong.
Twenty years of insider sentiment
Unique insiders buying vs selling each month, every US filer since 2006. Selling is chronic because pay arrives in stock; it is the buying spikes that marked the bottoms of 2008 and 2020.
Cluster buys, last 90 days
Three or more insiders buying within two weeks of each other. Academically the strongest simple insider signal; still just a fact, not advice.
| Company | Window | Insiders | Value |
|---|---|---|---|
BSX Boston Scientific
|
2026-07-31 → 2026-08-04 | 3 | $9.3M |
TKO TKO Group Holdings
|
2026-05-13 → 2026-05-14 | 4 | $5.5M |
| NCLH Norwegian Cruise Line Holdings | 2026-05-11 → 2026-05-22 | 4 | $3.5M |
FISV Fiserv
|
2026-06-16 → 2026-06-17 | 6 | $1.7M |
ADSK Autodesk
|
2026-06-15 → 2026-06-23 | 3 | $1.4M |
ZTS Zoetis
|
2026-05-11 → 2026-05-13 | 3 | $886K |
GEHC GE HealthCare
|
2026-05-08 → 2026-05-22 | 3 | $805K |
TSCO Tractor Supply
|
2026-08-03 → 2026-08-04 | 3 | $652K |
|
BSX Boston Scientific
|
2026-05-19 → 2026-05-20 | 3 | $554K |
| SPG Simon Property Group | 2026-06-30 → 2026-06-30 | 11 | $533K |
Largest open-market buys, 90 days
| Company | Insider | Date | Value |
|---|---|---|---|
RSG Republic Services
|
GATES WILLIAM H III (10% owner) | 2026-05-13 | $35.1M |
|
RSG Republic Services
|
CASCADE INVESTMENT, L.L.C. (10% owner) | 2026-05-13 | $35.1M |
|
RSG Republic Services
|
GATES WILLIAM H III (10% owner) | 2026-05-14 | $31.4M |
|
RSG Republic Services
|
CASCADE INVESTMENT, L.L.C. (10% owner) | 2026-05-14 | $31.4M |
|
RSG Republic Services
|
GATES WILLIAM H III (10% owner) | 2026-05-14 | $20.2M |
|
RSG Republic Services
|
CASCADE INVESTMENT, L.L.C. (10% owner) | 2026-05-14 | $20.2M |
HOOD Robinhood Markets
|
Malka Meyer (Director) | 2026-06-05 | $20.2M |
|
HOOD Robinhood Markets
|
Malka Meyer (Director) | 2026-05-28 | $20M |
IFF International Flavors & Fragrances
|
FRIBOURG PAUL J (Director) | 2026-06-01 | $19.3M |
|
RSG Republic Services
|
GATES WILLIAM H III (10% owner) | 2026-05-13 | $17.8M |
Largest discretionary sales, 90 days
Sales executed under prearranged 10b5-1 plans are excluded here; they answer a schedule, not a view.
| Company | Insider | Date | Value |
|---|---|---|---|
| FANG Diamondback Energy | Greth Lyndal (10% owner) | 2026-06-04 | $2B |
| FANG Diamondback Energy | SGF FANG Holdings, LP (10% owner) | 2026-06-04 | $2B |
CARR Carrier Global
|
Viessmann Maximilian (Director) | 2026-05-20 | $750M |
WMT Walmart
|
Walton Family Holdings Trust (10% owner) | 2026-06-16 | $467M |
DLTR Dollar Tree
|
Hilal Paul C (Director) | 2026-06-24 | $248.3M |
|
DLTR Dollar Tree
|
Mantle Ridge LP (Other) | 2026-06-24 | $248.3M |
|
DLTR Dollar Tree
|
MR Cobalt Advisor LLC (Other) | 2026-06-24 | $248.3M |
CVS CVS Health
|
ROBBINS LARRY (Director) | 2026-05-19 | $187.3M |
|
WMT Walmart
|
Walton Family Holdings Trust (10% owner) | 2026-06-02 | $184.4M |
NVDA Nvidia
|
STEVENS MARK A (Director) | 2026-06-18 | $119M |
Sales on autopilot
Share of the last year's sale value executed under prearranged 10b5-1 plans. High means scheduled and mechanical; low means discretionary timing.
Longest without an insider buy
Covered companies where no insider has bought a single share on the open market for the longest time.
| Company | Last insider buy |
|---|---|
| CL Colgate-Palmolive | 2007-08-01 |
| EXPD Expeditors International | 2008-02-13 |
| PPL PPL Corporation | 2008-12-16 |
| ISRG Intuitive Surgical | 2010-11-19 |
| CMCSA Comcast | 2011-05-09 |
| OMC Omnicom Group | 2011-08-08 |
| PTC PTC Inc. | 2011-08-16 |
| PG Procter & Gamble | 2012-10-26 |
| RVTY Revvity | 2012-11-26 |
| PEP PepsiCo | 2013-02-27 |
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.