I traded it from 6 to 9 a few months back but only recently got back in thinking it was at the bottom of the range before the next leg higher - yes very frustrating. Hopefully not insiders selling as you mentioned easrlier.
Anything can happen though - sometimes they get pushed down just prior to a takeover! It's in a growth industry and no debt that I can see so maybe just a short term hiccup.
GRB Price at posting:
7.6¢ Sentiment: Hold Disclosure: Held