Why does most insider selling not mean anything?

Because much of it is not a discretionary trade. Of the 300 transactions reviewed here, 72 were grants, 67 were option exercises and 17 were shares automatically withheld to pay tax on vesting. Only the 129 open-market sales reflect a decision to sell, and even those are commonly driven by liquidity, diversification or a pre-set plan rather than a view on the stock.

Why are insider purchases treated as more informative than sales?

Insiders receive stock as compensation, so selling has many explanations unrelated to their view of the business. Buying on the open market costs them their own money and has far fewer innocent explanations, which is why a cluster of purchases in one name draws more attention than a much larger sale.

Is this data verified against SEC filings?

No. It comes from Finnhub aggregation and has not been cross-checked against the primary Form 4 documents on SEC EDGAR. This piece includes one row whose transaction code and share direction contradict each other, which is a direct illustration of why the distinction matters.

Insider Watch · July 28, 2026 · NEWS

One clean insider buy in fifteen big-cap tapes

The useful number in insider data is not how much got sold. Most disposals are automatic and mean nothing. It is how rarely anybody buys.

RadarPulse Markets Team 2 min read Published July 28, 2026

Fifteen large-cap tapes. Three hundred recorded insider transactions between March 20 and July 20, 2026. One hundred and twenty-nine of them are open-market sales. Two carry an open-market purchase code, and only one of those two survives a look.

Sales 129 · Grants 72 · Exercises 67 · Tax withhold 17 · Gifts 13 · Purchases 2. Only one of the two purchase-coded rows is a clean open-market buy.

Most insider selling is not a decision

The reason insider data gets misread is that the word "sold" covers several unrelated events, and only one of them is a choice. Of the 300 transactions, 72 are grants, 67 are option exercises and 17 are shares withheld to cover tax on vesting. That last category is the most misleading: it appears as a disposal, it is automatic, and it happens because stock vested rather than because anyone formed a view. On June 17 four Nvidia officers had shares withheld at $207.41 on the same day, which is a payroll event wearing the costume of a trade.

Strip those out and 129 discretionary sales remain, concentrated in a few hands. One Nvidia director, Mark A. Stevens, accounts for the four largest in the set, the biggest being 565,615 shares at $210.4372 on June 18, about $119.0m. Apple's Arthur D. Levinson sold roughly $71.2m across two lines on May 6.

The buy side is one line long

Against all of that, the entire basket produced a single unambiguous open-market purchase: Boeing director Bradley D. Tilden, 1,370 shares at $218.50 on May 20, about $299,000. That is not a rounding error against $119m, it is a different order of magnitude entirely, and it is the whole buy side of fifteen of the largest companies in the market over four months.

This is normal, and it is why the ratio matters more than the totals. Insiders receive stock as pay and sell it for liquidity, diversification and tax. Buying is the only side that costs them something, so a purchase carries information a sale usually does not.

The row that disagrees with itself

The second purchase-coded row is a PayPal entry dated June 15: code P, price $41.53, and a share change of negative 6,129. A purchase that reduces the position is not a purchase. Either the code is wrong or the sign is, and from the aggregated feed alone there is no way to tell which.

We are flagging it rather than quietly dropping it, because it is the sourcing caveat at the top of this page made concrete. The primary Form 4 would settle it in one look. That document is what this lane does not currently have.

What to watch

Watch the buy side, because it is short enough to read in full. A cluster of open-market purchases in a single name, especially by more than one officer, is one of the few insider signals that has historically been worth anything. Nothing in this basket qualifies. One director bought $299,000 of Boeing in May, and that is the entire list.