Well, to state the obvious, it is the CO2 group, and many...

Well, to state the obvious, it is the CO2 group, and many investors have bought into the company on the assumption that this would be the focus of the company.

The company is going through a process of transformation: the departure of the CEO confirms it is not the company that it used to be, and many investors will want to sell off so they can think it over with a clear & unbiased mind.

And the new focus on Aquaculture is not without risk, as any long term investor in Clean Seas Tuna would know.

Apart from that, on a more practical level Grant owns several million shares in the company, and you would have to assume he would want to sell them off at some stage.