This part of Dazza's post is interesting.

They can then be regarded as insiders and prohibited from talking about what they know and cannot trade the stock.

When I was at the AGM I was talking to a young lady that was contracted to do some legal accounting of some sort. I asked her if she had shares in SLI and her reply was " No I don't . I'm not allowed to buy stocks because I contract to them"

Thats a shame. There would be an awful lot of people that are perfectly aware of SLI but cannot buy. Then again I'm sure they'de be creative enough to find a friend.