The patent was transferred from Clive to NMS, so don't worry on that score.
Maybe sellling his shares in NMS wouldn't make sense if he was a share trader on HC, but he's not - he's an engineer who can use $5m to do something else, more profitable than being tied up in shares.
For all the exciting tales of our daring investments, many people find actually getting off their ar se and doing something in the physical world more rewarding in both personal satisfaction and profit. Clive is likely to be one of them.
NMS Price at posting:
0.0¢ Sentiment: Buy Disclosure: Held