Not really, they are part of the charter granted by government and they bind the company in its legal capacities.

Companies are de jure entities, they exist not de facto, but by registration with the state. For many reasons, you or others cannot go to courts and claim different things about a company as a separate entity from its owners without previously having declared to the state and courts that such a company exists and what the rules of the company were.

The mission of a company are thus part of the rules defined for a company at creation, such that if an owner made its riches in oil prospecting, but also had a company whose mission was software development, then other partners of the second company, or creditors in case of bankruptcy, would have no claim to riches that came from oil prospecting. For example.