When is it permissible to sell shares of Etihad Etisalat Company, while ensuring not to fall into any Sharia-prohibited matters?

It is permissible to sell a company's shares once it commences commercial activity, because by doing so, it acquires assets and properties that increase its value. However, before that, it is not permissible to sell them for more than their value, because they are still considered monetary assets, and thus fall under the ruling of usury (riba).