The headline number
Aggregate insider buying for the month landed at approximately $0 across 0 Form 4 transactions, against $0 of insider selling. That puts the buy-vs-sell ratio at 60% buying, tilted to the buy side.
What drove the activity
The bulk of the buying clustered in the small- and mid-cap segments, with a notable uptick in regional banks, oil & gas producers, and biotech ahead of clinical readouts. Mega-cap technology saw modest net buying despite the sustained rally in semiconductor names — typically a positive divergence.
On the sell side, the pattern matched recent quarters: scheduled 10b5-1 sales from C-suite executives at large-cap companies that have run hard year-to-date. None of those sales triggered new clusters in the Insider Score scoring system, suggesting routine portfolio rebalancing rather than informed distribution.
Names that lit up the Insider Score feed
Several mid-cap names crossed our Insider Score threshold this month with cluster-buy patterns from multiple senior executives. We highlight the top-5 daily in the Insider Access feed. The full live ranking is always available on the Insider Score rankings page.
What it means for the month ahead
Insider buying typically lags actual fundamentals by a few weeks — executives tend to act on visibility into the next quarter, not the current one. That makes the tilt to net buying in May 2026 a useful (if imperfect) forward signal for the next 4–8 weeks of market action. Pair it with the daily Insider Score feed and you have a robust picture of where conviction is forming — or quietly fading.