Good news - I sent off an email enquiry to CNM and 5 mins later...

Good news - I sent off an email enquiry to CNM and 5 mins later Grant Mooney (non executive director) called me back.

He understands that the directive from ASX will be that these shares (because REH will own over 20% of CNM) must be held in escrow for 12 months. Apparently this is standard for the ASX but the determination is only made when the shares vest. he also assured ma that REH is not interested in selling their cornerstone investment in CNM and CETO technology.

So, looks like there will be no dumping from REH as soon as the shares vest and we have 12 months of clear air to make significant gains as (hopefully) the commercial demonstration is realised and CETO takes off.