Is this a sign that this company has reached its maturation? Wal...

Is this a sign that this company has reached its maturation? Wal Pisciotta selling 10% of his company is a big sell down. I noticed that months ago there were quite a bit of shorts on CRZ but obviously they have been burnt. CRZ currently does not make the top ten shorted companied on the ASX but it seems to be building up. I have read that one of the golden rules of shorting is never short a excellent business that is only overpriced. Quality businesses always have a way of growing earnings but I am very tempted to dabble in a short trade.