ADC — 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 ($500K–$1M), growing their stake by 1%. That insider’s track record: past buys beat the S&P 500 3 of 4 times (avg +4% vs S&P over 6 mo). Overall credibility score: 68/100 (Medium).

By the numbers. 3 insiders filed 6 open-market purchases at ADC over the window, 58,496 shares in all at an average of $70.82 a share, most recently on September 21, 2026. No insider sold ADC stock on the open market in that period.

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.