A non-gated corporate website is intended for the general public and would be subject to the consumer federal regulations, not the PAAB code (assuming that you are not somehow linking HCP advertising to particular pages of the corporate site other than the home page). The PAAB offers an opinion service for DTC pieces including institutional messages. The Health Canada document "The Distinction Between Advertising and Other Activities" is used as the basis of this assessment.
A consumer facing institutional message is a communication which provides information about a pharmaceutical manufacturer concerning topics such as its philosophy, activities, and product range. There must be no emphasis on one or more products. The central purpose must clearly be to inform broadly about the institution rather than its products.
If the corporate message is directed at Healthcare professionals, PAAB Code section 7.4 should be applied.