The directors of a company may have a discretionary power to refuse to register transfers of shares. But, that is a power that must be exercised in accordance with the core duties of the directors: to exercise the power for a proper purpose and to act in good faith in what they consider would be most likely to promote the success of the company. Thus, if it can be shown that the directors have acted capriciously, or from an improper motive, or with a collateral purpose, in refusing to register a transfer, the court will order the transfer to be registered.