These are Canadian legal forms.
The term takeover is generally used to refer to an acquisition where the company being acquired is resisting the takeover, otherwise known as a 'hostile takeover'. This is accomplished by bypassing the board of directors and making a tender offer directly to the shareholders. If the offer to purchase their shares is 'sweet' enough, a majority of the shareholders may decide to approve the takeover, notwithstanding that the directors and management oppose it.
Many companies have employed defenses against corporate takeover, such as instituting a shareholders' rights plan which allows shareholders to purchase additional stock at a reduced price, resulting in a higher number of shareholders. However, these strategies can have the negative effect of lowering the stock price and diluting the shares.