Questions about Crocs (Nasdaq:CROX)

Asensio is not impressed with Crocs (Nasdaq:CROC). They claim that of the recent IPO of 11.4 million shares 6.4 million shares where sold by insiders. The insiders had recently purchased shares for about $0.11. The IPO was priced at $21.00. The intervening time frame is insanely small. There seems to be many questions about how Crocs will deal with hyper competition from cheap brands. Also management claims about proprietary technology are being closely questioned.