I've been asking myself that very same question. All I can put it down to, is QMN are most likely under confidentiality agreements relating to JV dealings, and staff are aware of JV proceedings (and numbers) which going from announcements have being going on for quiet some time. Thus making them unable to purchase on market as because they are aware of significant information not known to the market.
Sound plausible to anyone else?
QMN Price at posting:
4.5¢ Sentiment: Buy Disclosure: Held