"Now to me, usually when a share purchase agreement is mentioned, that means either the stock will be taken up to a certain price to allow the merger to take place at a price equitable to both parties, or shares will be purchased by the merging company. Both take the stock up. "
I agree with this part of your post. Here is a google on Define Share purchase agreement
Legal document that outlines the terms and conditions for acquiring a company's outstanding stock shares
If your right I would think this would not begin until after the entire deal is papered by the law firms and signed by all parties Again if your right when this begins it would be sudden and change things fast