Can the articles of my Ontario corporation restrict who shares can be sold to?

Yes, and in fact most private Ontario corporations do include share transfer restrictions in their articles. The most common restriction prevents shareholders from transferring shares to outsiders without first offering them to existing shareholders — this is called a right of first refusal. Another common restriction requires board of directors approval before any share transfer can take place.

These restrictions serve important purposes in a closely held business. They prevent unwanted third parties from becoming shareholders, help maintain the private nature of the corporation (which allows it to qualify as a private corporation under securities law), and give existing shareholders some control over who their co-owners will be.

Transfer restrictions must be set out in the articles of incorporation, not just in a shareholders' agreement (though the shareholders' agreement often provides additional detail). If you want to add restrictions to an existing corporation that does not have them, you would need to amend the articles through a shareholder special resolution and file articles of amendment. Conversely, if you plan to raise capital by issuing shares to investors, overly tight restrictions could make your shares unattractive — legal advice helps find the right balance.