Shares represent a shareholder's ownership interest in a company. There are two main types of shares - ordinary shares and preference shares. Ordinary shares carry voting rights while preference shares have priority over ordinary shares in the payment of dividends and repayment of capital. A share certificate is no longer mandatory under the Companies Act 2016 but still serves as evidence of share ownership. Shares can be transferred through a duly executed instrument of transfer, but companies can impose restrictions on transfers. Forgeries are considered void and the true owner's name must be restored on the register of members.