A 10% owner made an unscheduled sale of $800,000 after the stock gained almost 60%. The last time this insider sold, the stock fell over 40% in the following three months, making this a strong bearish signal.

A 10% owner sold $800,000 of stock after a nearly 60% run-up. The insider's only previous sale was followed by a 40% drop in the stock, representing a strong bearish signal.