The fact that there have been no Adbri insider transactions recently certainly doesn't bother us. But insiders have shown more of an appetite for the stock, over the last year. While we have no worries about the insider transactions, we'd be more comfortable if they owned more Adbri stock. So while it's helpful to know what insiders are doing in terms of buying or selling, it's also helpful to know the risks that a particular company is facing. At Simply Wall St, we found 2 warning signs for Adbri that deserve your attention before buying any shares.