CHCO — 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 a Director (< $100K). That insider’s track record: past buys beat the S&P 500 6 of 10 times (avg −1% vs S&P over 6 mo). Overall credibility score: 16/100 (Low).

By the numbers. 4 insiders filed 4 open-market purchases at CHCO over the window, 480 shares in all at an average of $142.13 a share, most recently on October 23, 2026. On the other side, one insider filed 1 sale covering 400 shares at an average of $143.96, the latest on August 26, 2026.

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.