INBX — Insider Trading Activity

Cluster buy signal. Multiple insiders independently writing personal checks for the same company’s stock is one of the stronger patterns in the Form 4 data — it usually reflects a shared view among people who see the numbers first that the shares are cheap. Historically, 3+ insider clusters have outperformed the broader market over the following 6–12 months. Who is buying. The most credible buyer in this window is the company’s CEO ($1M–$5M), growing their stake by 5%. That insider’s track record: past buys beat the S&P 500 0 of 1 time (avg −9% vs S&P over 6 mo). Overall credibility score: 74/100 (High).

By the numbers. 3 insiders filed 14 open-market purchases at INBX over the window, 52,500 shares in all at an average of $104.73 a share, most recently on September 28, 2026. On the other side, one insider filed 5 sales covering 2,500 shares at an average of $111.60, the latest on September 15, 2026. That puts the average sale 7% above the average purchase — worth checking against where the stock trades today. Buying over the window ran 6.4× the dollar value of INBX’s trailing 11-month baseline.

How we read these filings — which transaction codes count, how the cluster and credibility thresholds are set, and what the signals have and haven’t predicted — is written up in the insider trading methodology.