LOL Why don't you read the rules regarding the purchase and disposal of significant assets of public traded companies.  These rules don't just apply to buyouts of entire companies but also to their assets.  Misinformed as usual sibiu.  Here I will provide the rules for you here if you're to lazy to look it up:

Asset Purchase In the context of public company transactions, asset purchases will attract additional regulation when the assets at issue are material to the target or acquirer. An acquisition or disposition of assets may constitute a “material change” for a reporting issuer requiring additional disclosure and filings under applicable securities laws. If the asset is a significant business, a reporting issuer that is an acquirer may also need to file a business acquisition report with its principal regulator. Where the assets sold are “all or substantially all” of the assets of a corporation, the corporate statutes require 662/3% approval of the transaction based on shares voted at a meeting of the shareholders. Additional TSX compliance may be required for listed issuers and continued listing rules will apply to TSX listed entities that have disposed of significant assets.

Quote from the article "Public Mergers and Acquisitions in Canada" by Bennett Jones law firm.  

If an offer of $500M were made for CUU's 25% interest in SC then that would certainly qualify as a significant asset of CUU and would fall under these rules.