As much as I would like to know what goes on inside the minds of others, I can't answer that question. I believe one of them did make a reasonable size purchase on market late last year. Perhaps they all have a sufficient amount of shares and see themselves being rewarded from their current holding. Perhaps they are fully committed financially elsewhere. There could be many reasons, none of them sinister.
LON Price at posting:
21.0¢ Sentiment: Buy Disclosure: Held