FUL — 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 ($500K–$1M), growing their stake by 769%. Overall credibility score: 46/100 (Medium).

By the numbers. 3 insiders filed 3 open-market purchases at FUL over the window, 12,465 shares in all at an average of $49.92 a share, most recently on October 7, 2026. On the other side, one insider filed 1 sale covering 9,561 shares at an average of $62.06, the latest on August 11, 2026. That puts the average sale 24% above the average purchase — worth checking against where the stock trades today. Buying over the window ran 19.3× the dollar value of FUL’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.